From 8eba77522e8be660188fc438a16618928291a7b6 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Thu, 27 Jul 2023 20:40:54 +0000 Subject: [PATCH] Bump google.golang.org/grpc from 1.38.0 to 1.57.0 Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.38.0 to 1.57.0. - [Release notes](https://github.com/grpc/grpc-go/releases) - [Commits](https://github.com/grpc/grpc-go/compare/v1.38.0...v1.57.0) --- updated-dependencies: - dependency-name: google.golang.org/grpc dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] --- go.mod | 10 +- go.sum | 18 +- .../golang/protobuf/jsonpb/decode.go | 530 ++++++ .../golang/protobuf/jsonpb/encode.go | 559 +++++++ .../github.com/golang/protobuf/jsonpb/json.go | 69 + vendor/golang.org/x/net/http2/pipe.go | 6 +- vendor/golang.org/x/net/http2/server.go | 7 +- vendor/golang.org/x/net/http2/transport.go | 11 +- .../x/text/unicode/norm/forminfo.go | 2 +- .../genproto/{ => googleapis/rpc}/LICENSE | 0 .../googleapis/rpc/status/status.pb.go | 27 +- vendor/google.golang.org/grpc/.travis.yml | 42 - vendor/google.golang.org/grpc/CONTRIBUTING.md | 32 +- vendor/google.golang.org/grpc/MAINTAINERS.md | 5 +- vendor/google.golang.org/grpc/Makefile | 2 - vendor/google.golang.org/grpc/NOTICE.txt | 13 + vendor/google.golang.org/grpc/README.md | 2 +- .../grpc/attributes/attributes.go | 121 +- vendor/google.golang.org/grpc/backoff.go | 2 +- .../grpc/balancer/balancer.go | 142 +- .../grpc/balancer/base/balancer.go | 88 +- .../grpc/balancer/conn_state_evaluator.go | 74 + .../grpc/balancer/grpclb/state/state.go | 2 +- .../grpc/balancer/roundrobin/roundrobin.go | 20 +- .../grpc/balancer_conn_wrappers.go | 471 ++++-- .../grpc_binarylog_v1/binarylog.pb.go | 22 +- vendor/google.golang.org/grpc/call.go | 5 + .../grpc/channelz/channelz.go | 36 + vendor/google.golang.org/grpc/clientconn.go | 1421 +++++++++++------ .../grpc/codes/code_string.go | 51 +- .../grpc/connectivity/connectivity.go | 35 +- .../grpc/credentials/credentials.go | 45 +- .../grpc/credentials/go12.go | 30 - .../grpc/credentials/insecure/insecure.go | 98 ++ .../google.golang.org/grpc/credentials/tls.go | 9 +- vendor/google.golang.org/grpc/dialoptions.go | 235 ++- .../grpc/encoding/encoding.go | 9 +- .../grpc/grpclog/loggerv2.go | 103 +- vendor/google.golang.org/grpc/idle.go | 287 ++++ vendor/google.golang.org/grpc/install_gae.sh | 6 - vendor/google.golang.org/grpc/interceptor.go | 9 +- .../balancer/gracefulswitch/gracefulswitch.go | 384 +++++ .../grpc/internal/binarylog/binarylog.go | 118 +- .../grpc/internal/binarylog/env_config.go | 26 +- .../grpc/internal/binarylog/method_logger.go | 161 +- .../grpc/internal/binarylog/sink.go | 53 +- .../grpc/internal/buffer/unbounded.go | 26 +- .../grpc/internal/channelz/funcs.go | 240 +-- .../grpc/internal/channelz/id.go | 75 + .../grpc/internal/channelz/logging.go | 91 +- .../grpc/internal/channelz/types.go | 39 +- .../grpc/internal/channelz/types_linux.go | 2 - .../grpc/internal/channelz/types_nonlinux.go | 5 +- .../grpc/internal/channelz/util_linux.go | 2 - .../grpc/internal/channelz/util_nonlinux.go | 3 +- .../grpc/internal/credentials/spiffe.go | 2 - .../grpc/internal/credentials/syscallconn.go | 2 - .../grpc/internal/credentials/util.go | 4 +- .../grpc/internal/envconfig/envconfig.go | 49 +- .../grpc/internal/envconfig/observability.go | 42 + .../grpc/internal/envconfig/xds.go | 95 ++ .../grpc/internal/grpclog/grpclog.go | 10 +- .../grpc/internal/grpclog/prefixLogger.go | 12 + .../grpc/internal/grpcrand/grpcrand.go | 57 +- .../internal/grpcsync/callback_serializer.go | 119 ++ .../oncefunc.go} | 19 +- .../grpc/internal/grpcsync/pubsub.go | 136 ++ .../grpc/internal/grpcutil/compressor.go | 47 + .../grpcutil.go} | 16 +- .../grpc/internal/grpcutil/method.go | 6 +- .../dns/go113.go => grpcutil/regex.go} | 22 +- .../grpc/internal/grpcutil/target.go | 89 -- .../grpc/internal/internal.go | 114 +- .../grpc/internal/metadata/metadata.go | 88 +- .../grpc/internal/pretty/pretty.go | 82 + .../grpc/internal/resolver/config_selector.go | 9 +- .../internal/resolver/dns/dns_resolver.go | 87 +- .../resolver/passthrough/passthrough.go | 11 +- .../grpc/internal/resolver/unix/unix.go | 21 +- .../grpc/internal/serviceconfig/duration.go | 130 ++ .../internal/serviceconfig/serviceconfig.go | 12 +- .../grpc/internal/status/status.go | 24 +- .../grpc/internal/syscall/syscall_linux.go | 2 - .../grpc/internal/syscall/syscall_nonlinux.go | 21 +- .../grpc/internal/transport/controlbuf.go | 169 +- .../grpc/internal/transport/defaults.go | 6 + .../grpc/internal/transport/flowcontrol.go | 4 +- .../grpc/internal/transport/handler_server.go | 81 +- .../grpc/internal/transport/http2_client.go | 638 +++++--- .../grpc/internal/transport/http2_server.go | 571 ++++--- .../grpc/internal/transport/http_util.go | 284 +--- .../grpc/internal/transport/logging.go | 40 + .../transport/networktype/networktype.go | 4 +- .../grpc/internal/transport/proxy.go | 4 +- .../grpc/internal/transport/transport.go | 68 +- .../grpc/internal/xds_handshake_cluster.go | 2 +- .../grpc/metadata/metadata.go | 150 +- .../google.golang.org/grpc/picker_wrapper.go | 77 +- vendor/google.golang.org/grpc/pickfirst.go | 181 ++- vendor/google.golang.org/grpc/preloader.go | 2 +- vendor/google.golang.org/grpc/regenerate.sh | 44 +- vendor/google.golang.org/grpc/resolver/map.go | 138 ++ .../grpc/resolver/resolver.go | 112 +- .../grpc/resolver_conn_wrapper.go | 226 ++- vendor/google.golang.org/grpc/rpc_util.go | 177 +- vendor/google.golang.org/grpc/server.go | 639 +++++--- .../google.golang.org/grpc/service_config.go | 95 +- .../grpc/serviceconfig/serviceconfig.go | 2 +- .../grpc/shared_buffer_pool.go | 154 ++ vendor/google.golang.org/grpc/stats/stats.go | 33 +- .../google.golang.org/grpc/status/status.go | 83 +- vendor/google.golang.org/grpc/stream.go | 616 ++++--- vendor/google.golang.org/grpc/tap/tap.go | 2 +- vendor/google.golang.org/grpc/version.go | 2 +- vendor/google.golang.org/grpc/vet.sh | 75 +- .../protobuf/encoding/protojson/decode.go | 665 ++++++++ .../protobuf/encoding/protojson/doc.go | 11 + .../protobuf/encoding/protojson/encode.go | 349 ++++ .../encoding/protojson/well_known_types.go | 895 +++++++++++ .../protobuf/internal/encoding/json/decode.go | 340 ++++ .../internal/encoding/json/decode_number.go | 254 +++ .../internal/encoding/json/decode_string.go | 91 ++ .../internal/encoding/json/decode_token.go | 192 +++ .../protobuf/internal/encoding/json/encode.go | 278 ++++ vendor/modules.txt | 21 +- 125 files changed, 11706 insertions(+), 3278 deletions(-) create mode 100644 vendor/github.com/golang/protobuf/jsonpb/decode.go create mode 100644 vendor/github.com/golang/protobuf/jsonpb/encode.go create mode 100644 vendor/github.com/golang/protobuf/jsonpb/json.go rename vendor/google.golang.org/genproto/{ => googleapis/rpc}/LICENSE (100%) delete mode 100644 vendor/google.golang.org/grpc/.travis.yml create mode 100644 vendor/google.golang.org/grpc/NOTICE.txt create mode 100644 vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go create mode 100644 vendor/google.golang.org/grpc/channelz/channelz.go delete mode 100644 vendor/google.golang.org/grpc/credentials/go12.go create mode 100644 vendor/google.golang.org/grpc/credentials/insecure/insecure.go create mode 100644 vendor/google.golang.org/grpc/idle.go delete mode 100644 vendor/google.golang.org/grpc/install_gae.sh create mode 100644 vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go create mode 100644 vendor/google.golang.org/grpc/internal/channelz/id.go create mode 100644 vendor/google.golang.org/grpc/internal/envconfig/observability.go create mode 100644 vendor/google.golang.org/grpc/internal/envconfig/xds.go create mode 100644 vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go rename vendor/google.golang.org/grpc/internal/{credentials/spiffe_appengine.go => grpcsync/oncefunc.go} (67%) create mode 100644 vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go create mode 100644 vendor/google.golang.org/grpc/internal/grpcutil/compressor.go rename vendor/google.golang.org/grpc/internal/{credentials/syscallconn_appengine.go => grpcutil/grpcutil.go} (72%) rename vendor/google.golang.org/grpc/internal/{resolver/dns/go113.go => grpcutil/regex.go} (63%) delete mode 100644 vendor/google.golang.org/grpc/internal/grpcutil/target.go create mode 100644 vendor/google.golang.org/grpc/internal/pretty/pretty.go create mode 100644 vendor/google.golang.org/grpc/internal/serviceconfig/duration.go create mode 100644 vendor/google.golang.org/grpc/internal/transport/logging.go create mode 100644 vendor/google.golang.org/grpc/resolver/map.go create mode 100644 vendor/google.golang.org/grpc/shared_buffer_pool.go create mode 100644 vendor/google.golang.org/protobuf/encoding/protojson/decode.go create mode 100644 vendor/google.golang.org/protobuf/encoding/protojson/doc.go create mode 100644 vendor/google.golang.org/protobuf/encoding/protojson/encode.go create mode 100644 vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go create mode 100644 vendor/google.golang.org/protobuf/internal/encoding/json/decode.go create mode 100644 vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go create mode 100644 vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go create mode 100644 vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go create mode 100644 vendor/google.golang.org/protobuf/internal/encoding/json/encode.go diff --git a/go.mod b/go.mod index 98b6d5b1..5e9613cd 100644 --- a/go.mod +++ b/go.mod @@ -12,7 +12,7 @@ require ( github.com/spf13/pflag v1.0.5 github.com/stretchr/testify v1.8.4 golang.org/x/sys v0.10.0 - google.golang.org/grpc v1.38.0 + google.golang.org/grpc v1.57.0 google.golang.org/protobuf v1.31.0 k8s.io/gengo v0.0.0-00010101000000-000000000000 k8s.io/klog/v2 v2.100.1 @@ -21,13 +21,13 @@ require ( require ( github.com/davecgh/go-spew v1.1.1 // indirect github.com/go-logr/logr v1.2.0 // indirect - github.com/golang/protobuf v1.5.0 // indirect + github.com/golang/protobuf v1.5.3 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect golang.org/x/mod v0.8.0 // indirect - golang.org/x/net v0.7.0 // indirect - golang.org/x/text v0.7.0 // indirect + golang.org/x/net v0.9.0 // indirect + golang.org/x/text v0.9.0 // indirect golang.org/x/tools v0.6.0 // indirect - google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect k8s.io/klog v1.0.0 // indirect ) diff --git a/go.sum b/go.sum index bf6366a3..b82b53fb 100644 --- a/go.sum +++ b/go.sum @@ -28,8 +28,9 @@ github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvq github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8= github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= -github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4= github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= +github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg= +github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= @@ -77,8 +78,8 @@ golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73r golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= -golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g= -golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs= +golang.org/x/net v0.9.0 h1:aWJ/m6xSmxWBx+V0XRHTlrYrPG56jKsLdTFmsSsCzOM= +golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns= golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= @@ -91,8 +92,8 @@ golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7w golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA= golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= -golang.org/x/text v0.7.0 h1:4BRB4x83lYWy72KwLD/qYDuTu7q9PjSagHvijDw7cLo= -golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= +golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE= +golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8= golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY= golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= @@ -104,14 +105,16 @@ google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= -google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY= google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo= +google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 h1:0nDDozoAU19Qb2HwhXadU8OcsiO/09cnTqhUtq2MEOM= +google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19/go.mod h1:66JfowdXAEgad5O9NnYcsNPLCPZJD++2L9X0PCMODrA= google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg= google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY= google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk= -google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0= google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= +google.golang.org/grpc v1.57.0 h1:kfzNeI/klCGD2YPMUlaGNT3pxvYfga7smW3Vth8Zsiw= +google.golang.org/grpc v1.57.0/go.mod h1:Sd+9RMTACXwmub0zcNY2c4arhtrbBYD1AUHI/dt16Mo= google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM= @@ -122,6 +125,7 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw= +google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8= google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= diff --git a/vendor/github.com/golang/protobuf/jsonpb/decode.go b/vendor/github.com/golang/protobuf/jsonpb/decode.go new file mode 100644 index 00000000..6c16c255 --- /dev/null +++ b/vendor/github.com/golang/protobuf/jsonpb/decode.go @@ -0,0 +1,530 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package jsonpb + +import ( + "encoding/json" + "errors" + "fmt" + "io" + "math" + "reflect" + "strconv" + "strings" + "time" + + "github.com/golang/protobuf/proto" + "google.golang.org/protobuf/encoding/protojson" + protoV2 "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +const wrapJSONUnmarshalV2 = false + +// UnmarshalNext unmarshals the next JSON object from d into m. +func UnmarshalNext(d *json.Decoder, m proto.Message) error { + return new(Unmarshaler).UnmarshalNext(d, m) +} + +// Unmarshal unmarshals a JSON object from r into m. +func Unmarshal(r io.Reader, m proto.Message) error { + return new(Unmarshaler).Unmarshal(r, m) +} + +// UnmarshalString unmarshals a JSON object from s into m. +func UnmarshalString(s string, m proto.Message) error { + return new(Unmarshaler).Unmarshal(strings.NewReader(s), m) +} + +// Unmarshaler is a configurable object for converting from a JSON +// representation to a protocol buffer object. +type Unmarshaler struct { + // AllowUnknownFields specifies whether to allow messages to contain + // unknown JSON fields, as opposed to failing to unmarshal. + AllowUnknownFields bool + + // AnyResolver is used to resolve the google.protobuf.Any well-known type. + // If unset, the global registry is used by default. + AnyResolver AnyResolver +} + +// JSONPBUnmarshaler is implemented by protobuf messages that customize the way +// they are unmarshaled from JSON. Messages that implement this should also +// implement JSONPBMarshaler so that the custom format can be produced. +// +// The JSON unmarshaling must follow the JSON to proto specification: +// https://developers.google.com/protocol-buffers/docs/proto3#json +// +// Deprecated: Custom types should implement protobuf reflection instead. +type JSONPBUnmarshaler interface { + UnmarshalJSONPB(*Unmarshaler, []byte) error +} + +// Unmarshal unmarshals a JSON object from r into m. +func (u *Unmarshaler) Unmarshal(r io.Reader, m proto.Message) error { + return u.UnmarshalNext(json.NewDecoder(r), m) +} + +// UnmarshalNext unmarshals the next JSON object from d into m. +func (u *Unmarshaler) UnmarshalNext(d *json.Decoder, m proto.Message) error { + if m == nil { + return errors.New("invalid nil message") + } + + // Parse the next JSON object from the stream. + raw := json.RawMessage{} + if err := d.Decode(&raw); err != nil { + return err + } + + // Check for custom unmarshalers first since they may not properly + // implement protobuf reflection that the logic below relies on. + if jsu, ok := m.(JSONPBUnmarshaler); ok { + return jsu.UnmarshalJSONPB(u, raw) + } + + mr := proto.MessageReflect(m) + + // NOTE: For historical reasons, a top-level null is treated as a noop. + // This is incorrect, but kept for compatibility. + if string(raw) == "null" && mr.Descriptor().FullName() != "google.protobuf.Value" { + return nil + } + + if wrapJSONUnmarshalV2 { + // NOTE: If input message is non-empty, we need to preserve merge semantics + // of the old jsonpb implementation. These semantics are not supported by + // the protobuf JSON specification. + isEmpty := true + mr.Range(func(protoreflect.FieldDescriptor, protoreflect.Value) bool { + isEmpty = false // at least one iteration implies non-empty + return false + }) + if !isEmpty { + // Perform unmarshaling into a newly allocated, empty message. + mr = mr.New() + + // Use a defer to copy all unmarshaled fields into the original message. + dst := proto.MessageReflect(m) + defer mr.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool { + dst.Set(fd, v) + return true + }) + } + + // Unmarshal using the v2 JSON unmarshaler. + opts := protojson.UnmarshalOptions{ + DiscardUnknown: u.AllowUnknownFields, + } + if u.AnyResolver != nil { + opts.Resolver = anyResolver{u.AnyResolver} + } + return opts.Unmarshal(raw, mr.Interface()) + } else { + if err := u.unmarshalMessage(mr, raw); err != nil { + return err + } + return protoV2.CheckInitialized(mr.Interface()) + } +} + +func (u *Unmarshaler) unmarshalMessage(m protoreflect.Message, in []byte) error { + md := m.Descriptor() + fds := md.Fields() + + if jsu, ok := proto.MessageV1(m.Interface()).(JSONPBUnmarshaler); ok { + return jsu.UnmarshalJSONPB(u, in) + } + + if string(in) == "null" && md.FullName() != "google.protobuf.Value" { + return nil + } + + switch wellKnownType(md.FullName()) { + case "Any": + var jsonObject map[string]json.RawMessage + if err := json.Unmarshal(in, &jsonObject); err != nil { + return err + } + + rawTypeURL, ok := jsonObject["@type"] + if !ok { + return errors.New("Any JSON doesn't have '@type'") + } + typeURL, err := unquoteString(string(rawTypeURL)) + if err != nil { + return fmt.Errorf("can't unmarshal Any's '@type': %q", rawTypeURL) + } + m.Set(fds.ByNumber(1), protoreflect.ValueOfString(typeURL)) + + var m2 protoreflect.Message + if u.AnyResolver != nil { + mi, err := u.AnyResolver.Resolve(typeURL) + if err != nil { + return err + } + m2 = proto.MessageReflect(mi) + } else { + mt, err := protoregistry.GlobalTypes.FindMessageByURL(typeURL) + if err != nil { + if err == protoregistry.NotFound { + return fmt.Errorf("could not resolve Any message type: %v", typeURL) + } + return err + } + m2 = mt.New() + } + + if wellKnownType(m2.Descriptor().FullName()) != "" { + rawValue, ok := jsonObject["value"] + if !ok { + return errors.New("Any JSON doesn't have 'value'") + } + if err := u.unmarshalMessage(m2, rawValue); err != nil { + return fmt.Errorf("can't unmarshal Any nested proto %v: %v", typeURL, err) + } + } else { + delete(jsonObject, "@type") + rawJSON, err := json.Marshal(jsonObject) + if err != nil { + return fmt.Errorf("can't generate JSON for Any's nested proto to be unmarshaled: %v", err) + } + if err = u.unmarshalMessage(m2, rawJSON); err != nil { + return fmt.Errorf("can't unmarshal Any nested proto %v: %v", typeURL, err) + } + } + + rawWire, err := protoV2.Marshal(m2.Interface()) + if err != nil { + return fmt.Errorf("can't marshal proto %v into Any.Value: %v", typeURL, err) + } + m.Set(fds.ByNumber(2), protoreflect.ValueOfBytes(rawWire)) + return nil + case "BoolValue", "BytesValue", "StringValue", + "Int32Value", "UInt32Value", "FloatValue", + "Int64Value", "UInt64Value", "DoubleValue": + fd := fds.ByNumber(1) + v, err := u.unmarshalValue(m.NewField(fd), in, fd) + if err != nil { + return err + } + m.Set(fd, v) + return nil + case "Duration": + v, err := unquoteString(string(in)) + if err != nil { + return err + } + d, err := time.ParseDuration(v) + if err != nil { + return fmt.Errorf("bad Duration: %v", err) + } + + sec := d.Nanoseconds() / 1e9 + nsec := d.Nanoseconds() % 1e9 + m.Set(fds.ByNumber(1), protoreflect.ValueOfInt64(int64(sec))) + m.Set(fds.ByNumber(2), protoreflect.ValueOfInt32(int32(nsec))) + return nil + case "Timestamp": + v, err := unquoteString(string(in)) + if err != nil { + return err + } + t, err := time.Parse(time.RFC3339Nano, v) + if err != nil { + return fmt.Errorf("bad Timestamp: %v", err) + } + + sec := t.Unix() + nsec := t.Nanosecond() + m.Set(fds.ByNumber(1), protoreflect.ValueOfInt64(int64(sec))) + m.Set(fds.ByNumber(2), protoreflect.ValueOfInt32(int32(nsec))) + return nil + case "Value": + switch { + case string(in) == "null": + m.Set(fds.ByNumber(1), protoreflect.ValueOfEnum(0)) + case string(in) == "true": + m.Set(fds.ByNumber(4), protoreflect.ValueOfBool(true)) + case string(in) == "false": + m.Set(fds.ByNumber(4), protoreflect.ValueOfBool(false)) + case hasPrefixAndSuffix('"', in, '"'): + s, err := unquoteString(string(in)) + if err != nil { + return fmt.Errorf("unrecognized type for Value %q", in) + } + m.Set(fds.ByNumber(3), protoreflect.ValueOfString(s)) + case hasPrefixAndSuffix('[', in, ']'): + v := m.Mutable(fds.ByNumber(6)) + return u.unmarshalMessage(v.Message(), in) + case hasPrefixAndSuffix('{', in, '}'): + v := m.Mutable(fds.ByNumber(5)) + return u.unmarshalMessage(v.Message(), in) + default: + f, err := strconv.ParseFloat(string(in), 0) + if err != nil { + return fmt.Errorf("unrecognized type for Value %q", in) + } + m.Set(fds.ByNumber(2), protoreflect.ValueOfFloat64(f)) + } + return nil + case "ListValue": + var jsonArray []json.RawMessage + if err := json.Unmarshal(in, &jsonArray); err != nil { + return fmt.Errorf("bad ListValue: %v", err) + } + + lv := m.Mutable(fds.ByNumber(1)).List() + for _, raw := range jsonArray { + ve := lv.NewElement() + if err := u.unmarshalMessage(ve.Message(), raw); err != nil { + return err + } + lv.Append(ve) + } + return nil + case "Struct": + var jsonObject map[string]json.RawMessage + if err := json.Unmarshal(in, &jsonObject); err != nil { + return fmt.Errorf("bad StructValue: %v", err) + } + + mv := m.Mutable(fds.ByNumber(1)).Map() + for key, raw := range jsonObject { + kv := protoreflect.ValueOf(key).MapKey() + vv := mv.NewValue() + if err := u.unmarshalMessage(vv.Message(), raw); err != nil { + return fmt.Errorf("bad value in StructValue for key %q: %v", key, err) + } + mv.Set(kv, vv) + } + return nil + } + + var jsonObject map[string]json.RawMessage + if err := json.Unmarshal(in, &jsonObject); err != nil { + return err + } + + // Handle known fields. + for i := 0; i < fds.Len(); i++ { + fd := fds.Get(i) + if fd.IsWeak() && fd.Message().IsPlaceholder() { + continue // weak reference is not linked in + } + + // Search for any raw JSON value associated with this field. + var raw json.RawMessage + name := string(fd.Name()) + if fd.Kind() == protoreflect.GroupKind { + name = string(fd.Message().Name()) + } + if v, ok := jsonObject[name]; ok { + delete(jsonObject, name) + raw = v + } + name = string(fd.JSONName()) + if v, ok := jsonObject[name]; ok { + delete(jsonObject, name) + raw = v + } + + field := m.NewField(fd) + // Unmarshal the field value. + if raw == nil || (string(raw) == "null" && !isSingularWellKnownValue(fd) && !isSingularJSONPBUnmarshaler(field, fd)) { + continue + } + v, err := u.unmarshalValue(field, raw, fd) + if err != nil { + return err + } + m.Set(fd, v) + } + + // Handle extension fields. + for name, raw := range jsonObject { + if !strings.HasPrefix(name, "[") || !strings.HasSuffix(name, "]") { + continue + } + + // Resolve the extension field by name. + xname := protoreflect.FullName(name[len("[") : len(name)-len("]")]) + xt, _ := protoregistry.GlobalTypes.FindExtensionByName(xname) + if xt == nil && isMessageSet(md) { + xt, _ = protoregistry.GlobalTypes.FindExtensionByName(xname.Append("message_set_extension")) + } + if xt == nil { + continue + } + delete(jsonObject, name) + fd := xt.TypeDescriptor() + if fd.ContainingMessage().FullName() != m.Descriptor().FullName() { + return fmt.Errorf("extension field %q does not extend message %q", xname, m.Descriptor().FullName()) + } + + field := m.NewField(fd) + // Unmarshal the field value. + if raw == nil || (string(raw) == "null" && !isSingularWellKnownValue(fd) && !isSingularJSONPBUnmarshaler(field, fd)) { + continue + } + v, err := u.unmarshalValue(field, raw, fd) + if err != nil { + return err + } + m.Set(fd, v) + } + + if !u.AllowUnknownFields && len(jsonObject) > 0 { + for name := range jsonObject { + return fmt.Errorf("unknown field %q in %v", name, md.FullName()) + } + } + return nil +} + +func isSingularWellKnownValue(fd protoreflect.FieldDescriptor) bool { + if fd.Cardinality() == protoreflect.Repeated { + return false + } + if md := fd.Message(); md != nil { + return md.FullName() == "google.protobuf.Value" + } + if ed := fd.Enum(); ed != nil { + return ed.FullName() == "google.protobuf.NullValue" + } + return false +} + +func isSingularJSONPBUnmarshaler(v protoreflect.Value, fd protoreflect.FieldDescriptor) bool { + if fd.Message() != nil && fd.Cardinality() != protoreflect.Repeated { + _, ok := proto.MessageV1(v.Interface()).(JSONPBUnmarshaler) + return ok + } + return false +} + +func (u *Unmarshaler) unmarshalValue(v protoreflect.Value, in []byte, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) { + switch { + case fd.IsList(): + var jsonArray []json.RawMessage + if err := json.Unmarshal(in, &jsonArray); err != nil { + return v, err + } + lv := v.List() + for _, raw := range jsonArray { + ve, err := u.unmarshalSingularValue(lv.NewElement(), raw, fd) + if err != nil { + return v, err + } + lv.Append(ve) + } + return v, nil + case fd.IsMap(): + var jsonObject map[string]json.RawMessage + if err := json.Unmarshal(in, &jsonObject); err != nil { + return v, err + } + kfd := fd.MapKey() + vfd := fd.MapValue() + mv := v.Map() + for key, raw := range jsonObject { + var kv protoreflect.MapKey + if kfd.Kind() == protoreflect.StringKind { + kv = protoreflect.ValueOf(key).MapKey() + } else { + v, err := u.unmarshalSingularValue(kfd.Default(), []byte(key), kfd) + if err != nil { + return v, err + } + kv = v.MapKey() + } + + vv, err := u.unmarshalSingularValue(mv.NewValue(), raw, vfd) + if err != nil { + return v, err + } + mv.Set(kv, vv) + } + return v, nil + default: + return u.unmarshalSingularValue(v, in, fd) + } +} + +var nonFinite = map[string]float64{ + `"NaN"`: math.NaN(), + `"Infinity"`: math.Inf(+1), + `"-Infinity"`: math.Inf(-1), +} + +func (u *Unmarshaler) unmarshalSingularValue(v protoreflect.Value, in []byte, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) { + switch fd.Kind() { + case protoreflect.BoolKind: + return unmarshalValue(in, new(bool)) + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + return unmarshalValue(trimQuote(in), new(int32)) + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + return unmarshalValue(trimQuote(in), new(int64)) + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + return unmarshalValue(trimQuote(in), new(uint32)) + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + return unmarshalValue(trimQuote(in), new(uint64)) + case protoreflect.FloatKind: + if f, ok := nonFinite[string(in)]; ok { + return protoreflect.ValueOfFloat32(float32(f)), nil + } + return unmarshalValue(trimQuote(in), new(float32)) + case protoreflect.DoubleKind: + if f, ok := nonFinite[string(in)]; ok { + return protoreflect.ValueOfFloat64(float64(f)), nil + } + return unmarshalValue(trimQuote(in), new(float64)) + case protoreflect.StringKind: + return unmarshalValue(in, new(string)) + case protoreflect.BytesKind: + return unmarshalValue(in, new([]byte)) + case protoreflect.EnumKind: + if hasPrefixAndSuffix('"', in, '"') { + vd := fd.Enum().Values().ByName(protoreflect.Name(trimQuote(in))) + if vd == nil { + return v, fmt.Errorf("unknown value %q for enum %s", in, fd.Enum().FullName()) + } + return protoreflect.ValueOfEnum(vd.Number()), nil + } + return unmarshalValue(in, new(protoreflect.EnumNumber)) + case protoreflect.MessageKind, protoreflect.GroupKind: + err := u.unmarshalMessage(v.Message(), in) + return v, err + default: + panic(fmt.Sprintf("invalid kind %v", fd.Kind())) + } +} + +func unmarshalValue(in []byte, v interface{}) (protoreflect.Value, error) { + err := json.Unmarshal(in, v) + return protoreflect.ValueOf(reflect.ValueOf(v).Elem().Interface()), err +} + +func unquoteString(in string) (out string, err error) { + err = json.Unmarshal([]byte(in), &out) + return out, err +} + +func hasPrefixAndSuffix(prefix byte, in []byte, suffix byte) bool { + if len(in) >= 2 && in[0] == prefix && in[len(in)-1] == suffix { + return true + } + return false +} + +// trimQuote is like unquoteString but simply strips surrounding quotes. +// This is incorrect, but is behavior done by the legacy implementation. +func trimQuote(in []byte) []byte { + if len(in) >= 2 && in[0] == '"' && in[len(in)-1] == '"' { + in = in[1 : len(in)-1] + } + return in +} diff --git a/vendor/github.com/golang/protobuf/jsonpb/encode.go b/vendor/github.com/golang/protobuf/jsonpb/encode.go new file mode 100644 index 00000000..685c80a6 --- /dev/null +++ b/vendor/github.com/golang/protobuf/jsonpb/encode.go @@ -0,0 +1,559 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package jsonpb + +import ( + "encoding/json" + "errors" + "fmt" + "io" + "math" + "reflect" + "sort" + "strconv" + "strings" + "time" + + "github.com/golang/protobuf/proto" + "google.golang.org/protobuf/encoding/protojson" + protoV2 "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +const wrapJSONMarshalV2 = false + +// Marshaler is a configurable object for marshaling protocol buffer messages +// to the specified JSON representation. +type Marshaler struct { + // OrigName specifies whether to use the original protobuf name for fields. + OrigName bool + + // EnumsAsInts specifies whether to render enum values as integers, + // as opposed to string values. + EnumsAsInts bool + + // EmitDefaults specifies whether to render fields with zero values. + EmitDefaults bool + + // Indent controls whether the output is compact or not. + // If empty, the output is compact JSON. Otherwise, every JSON object + // entry and JSON array value will be on its own line. + // Each line will be preceded by repeated copies of Indent, where the + // number of copies is the current indentation depth. + Indent string + + // AnyResolver is used to resolve the google.protobuf.Any well-known type. + // If unset, the global registry is used by default. + AnyResolver AnyResolver +} + +// JSONPBMarshaler is implemented by protobuf messages that customize the +// way they are marshaled to JSON. Messages that implement this should also +// implement JSONPBUnmarshaler so that the custom format can be parsed. +// +// The JSON marshaling must follow the proto to JSON specification: +// https://developers.google.com/protocol-buffers/docs/proto3#json +// +// Deprecated: Custom types should implement protobuf reflection instead. +type JSONPBMarshaler interface { + MarshalJSONPB(*Marshaler) ([]byte, error) +} + +// Marshal serializes a protobuf message as JSON into w. +func (jm *Marshaler) Marshal(w io.Writer, m proto.Message) error { + b, err := jm.marshal(m) + if len(b) > 0 { + if _, err := w.Write(b); err != nil { + return err + } + } + return err +} + +// MarshalToString serializes a protobuf message as JSON in string form. +func (jm *Marshaler) MarshalToString(m proto.Message) (string, error) { + b, err := jm.marshal(m) + if err != nil { + return "", err + } + return string(b), nil +} + +func (jm *Marshaler) marshal(m proto.Message) ([]byte, error) { + v := reflect.ValueOf(m) + if m == nil || (v.Kind() == reflect.Ptr && v.IsNil()) { + return nil, errors.New("Marshal called with nil") + } + + // Check for custom marshalers first since they may not properly + // implement protobuf reflection that the logic below relies on. + if jsm, ok := m.(JSONPBMarshaler); ok { + return jsm.MarshalJSONPB(jm) + } + + if wrapJSONMarshalV2 { + opts := protojson.MarshalOptions{ + UseProtoNames: jm.OrigName, + UseEnumNumbers: jm.EnumsAsInts, + EmitUnpopulated: jm.EmitDefaults, + Indent: jm.Indent, + } + if jm.AnyResolver != nil { + opts.Resolver = anyResolver{jm.AnyResolver} + } + return opts.Marshal(proto.MessageReflect(m).Interface()) + } else { + // Check for unpopulated required fields first. + m2 := proto.MessageReflect(m) + if err := protoV2.CheckInitialized(m2.Interface()); err != nil { + return nil, err + } + + w := jsonWriter{Marshaler: jm} + err := w.marshalMessage(m2, "", "") + return w.buf, err + } +} + +type jsonWriter struct { + *Marshaler + buf []byte +} + +func (w *jsonWriter) write(s string) { + w.buf = append(w.buf, s...) +} + +func (w *jsonWriter) marshalMessage(m protoreflect.Message, indent, typeURL string) error { + if jsm, ok := proto.MessageV1(m.Interface()).(JSONPBMarshaler); ok { + b, err := jsm.MarshalJSONPB(w.Marshaler) + if err != nil { + return err + } + if typeURL != "" { + // we are marshaling this object to an Any type + var js map[string]*json.RawMessage + if err = json.Unmarshal(b, &js); err != nil { + return fmt.Errorf("type %T produced invalid JSON: %v", m.Interface(), err) + } + turl, err := json.Marshal(typeURL) + if err != nil { + return fmt.Errorf("failed to marshal type URL %q to JSON: %v", typeURL, err) + } + js["@type"] = (*json.RawMessage)(&turl) + if b, err = json.Marshal(js); err != nil { + return err + } + } + w.write(string(b)) + return nil + } + + md := m.Descriptor() + fds := md.Fields() + + // Handle well-known types. + const secondInNanos = int64(time.Second / time.Nanosecond) + switch wellKnownType(md.FullName()) { + case "Any": + return w.marshalAny(m, indent) + case "BoolValue", "BytesValue", "StringValue", + "Int32Value", "UInt32Value", "FloatValue", + "Int64Value", "UInt64Value", "DoubleValue": + fd := fds.ByNumber(1) + return w.marshalValue(fd, m.Get(fd), indent) + case "Duration": + const maxSecondsInDuration = 315576000000 + // "Generated output always contains 0, 3, 6, or 9 fractional digits, + // depending on required precision." + s := m.Get(fds.ByNumber(1)).Int() + ns := m.Get(fds.ByNumber(2)).Int() + if s < -maxSecondsInDuration || s > maxSecondsInDuration { + return fmt.Errorf("seconds out of range %v", s) + } + if ns <= -secondInNanos || ns >= secondInNanos { + return fmt.Errorf("ns out of range (%v, %v)", -secondInNanos, secondInNanos) + } + if (s > 0 && ns < 0) || (s < 0 && ns > 0) { + return errors.New("signs of seconds and nanos do not match") + } + var sign string + if s < 0 || ns < 0 { + sign, s, ns = "-", -1*s, -1*ns + } + x := fmt.Sprintf("%s%d.%09d", sign, s, ns) + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, ".000") + w.write(fmt.Sprintf(`"%vs"`, x)) + return nil + case "Timestamp": + // "RFC 3339, where generated output will always be Z-normalized + // and uses 0, 3, 6 or 9 fractional digits." + s := m.Get(fds.ByNumber(1)).Int() + ns := m.Get(fds.ByNumber(2)).Int() + if ns < 0 || ns >= secondInNanos { + return fmt.Errorf("ns out of range [0, %v)", secondInNanos) + } + t := time.Unix(s, ns).UTC() + // time.RFC3339Nano isn't exactly right (we need to get 3/6/9 fractional digits). + x := t.Format("2006-01-02T15:04:05.000000000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, ".000") + w.write(fmt.Sprintf(`"%vZ"`, x)) + return nil + case "Value": + // JSON value; which is a null, number, string, bool, object, or array. + od := md.Oneofs().Get(0) + fd := m.WhichOneof(od) + if fd == nil { + return errors.New("nil Value") + } + return w.marshalValue(fd, m.Get(fd), indent) + case "Struct", "ListValue": + // JSON object or array. + fd := fds.ByNumber(1) + return w.marshalValue(fd, m.Get(fd), indent) + } + + w.write("{") + if w.Indent != "" { + w.write("\n") + } + + firstField := true + if typeURL != "" { + if err := w.marshalTypeURL(indent, typeURL); err != nil { + return err + } + firstField = false + } + + for i := 0; i < fds.Len(); { + fd := fds.Get(i) + if od := fd.ContainingOneof(); od != nil { + fd = m.WhichOneof(od) + i += od.Fields().Len() + if fd == nil { + continue + } + } else { + i++ + } + + v := m.Get(fd) + + if !m.Has(fd) { + if !w.EmitDefaults || fd.ContainingOneof() != nil { + continue + } + if fd.Cardinality() != protoreflect.Repeated && (fd.Message() != nil || fd.Syntax() == protoreflect.Proto2) { + v = protoreflect.Value{} // use "null" for singular messages or proto2 scalars + } + } + + if !firstField { + w.writeComma() + } + if err := w.marshalField(fd, v, indent); err != nil { + return err + } + firstField = false + } + + // Handle proto2 extensions. + if md.ExtensionRanges().Len() > 0 { + // Collect a sorted list of all extension descriptor and values. + type ext struct { + desc protoreflect.FieldDescriptor + val protoreflect.Value + } + var exts []ext + m.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool { + if fd.IsExtension() { + exts = append(exts, ext{fd, v}) + } + return true + }) + sort.Slice(exts, func(i, j int) bool { + return exts[i].desc.Number() < exts[j].desc.Number() + }) + + for _, ext := range exts { + if !firstField { + w.writeComma() + } + if err := w.marshalField(ext.desc, ext.val, indent); err != nil { + return err + } + firstField = false + } + } + + if w.Indent != "" { + w.write("\n") + w.write(indent) + } + w.write("}") + return nil +} + +func (w *jsonWriter) writeComma() { + if w.Indent != "" { + w.write(",\n") + } else { + w.write(",") + } +} + +func (w *jsonWriter) marshalAny(m protoreflect.Message, indent string) error { + // "If the Any contains a value that has a special JSON mapping, + // it will be converted as follows: {"@type": xxx, "value": yyy}. + // Otherwise, the value will be converted into a JSON object, + // and the "@type" field will be inserted to indicate the actual data type." + md := m.Descriptor() + typeURL := m.Get(md.Fields().ByNumber(1)).String() + rawVal := m.Get(md.Fields().ByNumber(2)).Bytes() + + var m2 protoreflect.Message + if w.AnyResolver != nil { + mi, err := w.AnyResolver.Resolve(typeURL) + if err != nil { + return err + } + m2 = proto.MessageReflect(mi) + } else { + mt, err := protoregistry.GlobalTypes.FindMessageByURL(typeURL) + if err != nil { + return err + } + m2 = mt.New() + } + + if err := protoV2.Unmarshal(rawVal, m2.Interface()); err != nil { + return err + } + + if wellKnownType(m2.Descriptor().FullName()) == "" { + return w.marshalMessage(m2, indent, typeURL) + } + + w.write("{") + if w.Indent != "" { + w.write("\n") + } + if err := w.marshalTypeURL(indent, typeURL); err != nil { + return err + } + w.writeComma() + if w.Indent != "" { + w.write(indent) + w.write(w.Indent) + w.write(`"value": `) + } else { + w.write(`"value":`) + } + if err := w.marshalMessage(m2, indent+w.Indent, ""); err != nil { + return err + } + if w.Indent != "" { + w.write("\n") + w.write(indent) + } + w.write("}") + return nil +} + +func (w *jsonWriter) marshalTypeURL(indent, typeURL string) error { + if w.Indent != "" { + w.write(indent) + w.write(w.Indent) + } + w.write(`"@type":`) + if w.Indent != "" { + w.write(" ") + } + b, err := json.Marshal(typeURL) + if err != nil { + return err + } + w.write(string(b)) + return nil +} + +// marshalField writes field description and value to the Writer. +func (w *jsonWriter) marshalField(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error { + if w.Indent != "" { + w.write(indent) + w.write(w.Indent) + } + w.write(`"`) + switch { + case fd.IsExtension(): + // For message set, use the fname of the message as the extension name. + name := string(fd.FullName()) + if isMessageSet(fd.ContainingMessage()) { + name = strings.TrimSuffix(name, ".message_set_extension") + } + + w.write("[" + name + "]") + case w.OrigName: + name := string(fd.Name()) + if fd.Kind() == protoreflect.GroupKind { + name = string(fd.Message().Name()) + } + w.write(name) + default: + w.write(string(fd.JSONName())) + } + w.write(`":`) + if w.Indent != "" { + w.write(" ") + } + return w.marshalValue(fd, v, indent) +} + +func (w *jsonWriter) marshalValue(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error { + switch { + case fd.IsList(): + w.write("[") + comma := "" + lv := v.List() + for i := 0; i < lv.Len(); i++ { + w.write(comma) + if w.Indent != "" { + w.write("\n") + w.write(indent) + w.write(w.Indent) + w.write(w.Indent) + } + if err := w.marshalSingularValue(fd, lv.Get(i), indent+w.Indent); err != nil { + return err + } + comma = "," + } + if w.Indent != "" { + w.write("\n") + w.write(indent) + w.write(w.Indent) + } + w.write("]") + return nil + case fd.IsMap(): + kfd := fd.MapKey() + vfd := fd.MapValue() + mv := v.Map() + + // Collect a sorted list of all map keys and values. + type entry struct{ key, val protoreflect.Value } + var entries []entry + mv.Range(func(k protoreflect.MapKey, v protoreflect.Value) bool { + entries = append(entries, entry{k.Value(), v}) + return true + }) + sort.Slice(entries, func(i, j int) bool { + switch kfd.Kind() { + case protoreflect.BoolKind: + return !entries[i].key.Bool() && entries[j].key.Bool() + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind, protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + return entries[i].key.Int() < entries[j].key.Int() + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind, protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + return entries[i].key.Uint() < entries[j].key.Uint() + case protoreflect.StringKind: + return entries[i].key.String() < entries[j].key.String() + default: + panic("invalid kind") + } + }) + + w.write(`{`) + comma := "" + for _, entry := range entries { + w.write(comma) + if w.Indent != "" { + w.write("\n") + w.write(indent) + w.write(w.Indent) + w.write(w.Indent) + } + + s := fmt.Sprint(entry.key.Interface()) + b, err := json.Marshal(s) + if err != nil { + return err + } + w.write(string(b)) + + w.write(`:`) + if w.Indent != "" { + w.write(` `) + } + + if err := w.marshalSingularValue(vfd, entry.val, indent+w.Indent); err != nil { + return err + } + comma = "," + } + if w.Indent != "" { + w.write("\n") + w.write(indent) + w.write(w.Indent) + } + w.write(`}`) + return nil + default: + return w.marshalSingularValue(fd, v, indent) + } +} + +func (w *jsonWriter) marshalSingularValue(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error { + switch { + case !v.IsValid(): + w.write("null") + return nil + case fd.Message() != nil: + return w.marshalMessage(v.Message(), indent+w.Indent, "") + case fd.Enum() != nil: + if fd.Enum().FullName() == "google.protobuf.NullValue" { + w.write("null") + return nil + } + + vd := fd.Enum().Values().ByNumber(v.Enum()) + if vd == nil || w.EnumsAsInts { + w.write(strconv.Itoa(int(v.Enum()))) + } else { + w.write(`"` + string(vd.Name()) + `"`) + } + return nil + default: + switch v.Interface().(type) { + case float32, float64: + switch { + case math.IsInf(v.Float(), +1): + w.write(`"Infinity"`) + return nil + case math.IsInf(v.Float(), -1): + w.write(`"-Infinity"`) + return nil + case math.IsNaN(v.Float()): + w.write(`"NaN"`) + return nil + } + case int64, uint64: + w.write(fmt.Sprintf(`"%d"`, v.Interface())) + return nil + } + + b, err := json.Marshal(v.Interface()) + if err != nil { + return err + } + w.write(string(b)) + return nil + } +} diff --git a/vendor/github.com/golang/protobuf/jsonpb/json.go b/vendor/github.com/golang/protobuf/jsonpb/json.go new file mode 100644 index 00000000..480e2448 --- /dev/null +++ b/vendor/github.com/golang/protobuf/jsonpb/json.go @@ -0,0 +1,69 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package jsonpb provides functionality to marshal and unmarshal between a +// protocol buffer message and JSON. It follows the specification at +// https://developers.google.com/protocol-buffers/docs/proto3#json. +// +// Do not rely on the default behavior of the standard encoding/json package +// when called on generated message types as it does not operate correctly. +// +// Deprecated: Use the "google.golang.org/protobuf/encoding/protojson" +// package instead. +package jsonpb + +import ( + "github.com/golang/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" + "google.golang.org/protobuf/runtime/protoimpl" +) + +// AnyResolver takes a type URL, present in an Any message, +// and resolves it into an instance of the associated message. +type AnyResolver interface { + Resolve(typeURL string) (proto.Message, error) +} + +type anyResolver struct{ AnyResolver } + +func (r anyResolver) FindMessageByName(message protoreflect.FullName) (protoreflect.MessageType, error) { + return r.FindMessageByURL(string(message)) +} + +func (r anyResolver) FindMessageByURL(url string) (protoreflect.MessageType, error) { + m, err := r.Resolve(url) + if err != nil { + return nil, err + } + return protoimpl.X.MessageTypeOf(m), nil +} + +func (r anyResolver) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) { + return protoregistry.GlobalTypes.FindExtensionByName(field) +} + +func (r anyResolver) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) { + return protoregistry.GlobalTypes.FindExtensionByNumber(message, field) +} + +func wellKnownType(s protoreflect.FullName) string { + if s.Parent() == "google.protobuf" { + switch s.Name() { + case "Empty", "Any", + "BoolValue", "BytesValue", "StringValue", + "Int32Value", "UInt32Value", "FloatValue", + "Int64Value", "UInt64Value", "DoubleValue", + "Duration", "Timestamp", + "NullValue", "Struct", "Value", "ListValue": + return string(s.Name()) + } + } + return "" +} + +func isMessageSet(md protoreflect.MessageDescriptor) bool { + ms, ok := md.(interface{ IsMessageSet() bool }) + return ok && ms.IsMessageSet() +} diff --git a/vendor/golang.org/x/net/http2/pipe.go b/vendor/golang.org/x/net/http2/pipe.go index c15b8a77..684d984f 100644 --- a/vendor/golang.org/x/net/http2/pipe.go +++ b/vendor/golang.org/x/net/http2/pipe.go @@ -88,13 +88,9 @@ func (p *pipe) Write(d []byte) (n int, err error) { p.c.L = &p.mu } defer p.c.Signal() - if p.err != nil { + if p.err != nil || p.breakErr != nil { return 0, errClosedPipeWrite } - if p.breakErr != nil { - p.unread += len(d) - return len(d), nil // discard when there is no reader - } return p.b.Write(d) } diff --git a/vendor/golang.org/x/net/http2/server.go b/vendor/golang.org/x/net/http2/server.go index 8cb14f3c..cd057f39 100644 --- a/vendor/golang.org/x/net/http2/server.go +++ b/vendor/golang.org/x/net/http2/server.go @@ -1822,15 +1822,18 @@ func (sc *serverConn) processData(f *DataFrame) error { } if len(data) > 0 { + st.bodyBytes += int64(len(data)) wrote, err := st.body.Write(data) if err != nil { + // The handler has closed the request body. + // Return the connection-level flow control for the discarded data, + // but not the stream-level flow control. sc.sendWindowUpdate(nil, int(f.Length)-wrote) - return sc.countError("body_write_err", streamError(id, ErrCodeStreamClosed)) + return nil } if wrote != len(data) { panic("internal error: bad Writer") } - st.bodyBytes += int64(len(data)) } // Return any padded flow control now, since we won't diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go index 05ba23d3..f965579f 100644 --- a/vendor/golang.org/x/net/http2/transport.go +++ b/vendor/golang.org/x/net/http2/transport.go @@ -560,10 +560,11 @@ func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Res traceGotConn(req, cc, reused) res, err := cc.RoundTrip(req) if err != nil && retry <= 6 { + roundTripErr := err if req, err = shouldRetryRequest(req, err); err == nil { // After the first retry, do exponential backoff with 10% jitter. if retry == 0 { - t.vlogf("RoundTrip retrying after failure: %v", err) + t.vlogf("RoundTrip retrying after failure: %v", roundTripErr) continue } backoff := float64(uint(1) << (uint(retry) - 1)) @@ -572,7 +573,7 @@ func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Res timer := backoffNewTimer(d) select { case <-timer.C: - t.vlogf("RoundTrip retrying after failure: %v", err) + t.vlogf("RoundTrip retrying after failure: %v", roundTripErr) continue case <-req.Context().Done(): timer.Stop() @@ -2555,6 +2556,9 @@ func (b transportResponseBody) Close() error { cs := b.cs cc := cs.cc + cs.bufPipe.BreakWithError(errClosedResponseBody) + cs.abortStream(errClosedResponseBody) + unread := cs.bufPipe.Len() if unread > 0 { cc.mu.Lock() @@ -2573,9 +2577,6 @@ func (b transportResponseBody) Close() error { cc.wmu.Unlock() } - cs.bufPipe.BreakWithError(errClosedResponseBody) - cs.abortStream(errClosedResponseBody) - select { case <-cs.donec: case <-cs.ctx.Done(): diff --git a/vendor/golang.org/x/text/unicode/norm/forminfo.go b/vendor/golang.org/x/text/unicode/norm/forminfo.go index d69ccb4f..487335d1 100644 --- a/vendor/golang.org/x/text/unicode/norm/forminfo.go +++ b/vendor/golang.org/x/text/unicode/norm/forminfo.go @@ -13,7 +13,7 @@ import "encoding/binary" // a rune to a uint16. The values take two forms. For v >= 0x8000: // bits // 15: 1 (inverse of NFD_QC bit of qcInfo) -// 13..7: qcInfo (see below). isYesD is always true (no decompostion). +// 13..7: qcInfo (see below). isYesD is always true (no decomposition). // 6..0: ccc (compressed CCC value). // For v < 0x8000, the respective rune has a decomposition and v is an index // into a byte array of UTF-8 decomposition sequences and additional info and diff --git a/vendor/google.golang.org/genproto/LICENSE b/vendor/google.golang.org/genproto/googleapis/rpc/LICENSE similarity index 100% rename from vendor/google.golang.org/genproto/LICENSE rename to vendor/google.golang.org/genproto/googleapis/rpc/LICENSE diff --git a/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go index 063d724c..a6b50818 100644 --- a/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go +++ b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go @@ -1,4 +1,4 @@ -// Copyright 2020 Google LLC +// Copyright 2022 Google LLC // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. @@ -14,8 +14,8 @@ // Code generated by protoc-gen-go. DO NOT EDIT. // versions: -// protoc-gen-go v1.22.0 -// protoc v3.11.2 +// protoc-gen-go v1.26.0 +// protoc v3.21.9 // source: google/rpc/status.proto package status @@ -24,10 +24,9 @@ import ( reflect "reflect" sync "sync" - proto "github.com/golang/protobuf/proto" - any "github.com/golang/protobuf/ptypes/any" protoreflect "google.golang.org/protobuf/reflect/protoreflect" protoimpl "google.golang.org/protobuf/runtime/protoimpl" + anypb "google.golang.org/protobuf/types/known/anypb" ) const ( @@ -37,10 +36,6 @@ const ( _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) ) -// This is a compile-time assertion that a sufficiently up-to-date version -// of the legacy proto package is being used. -const _ = proto.ProtoPackageIsVersion4 - // The `Status` type defines a logical error model that is suitable for // different programming environments, including REST APIs and RPC APIs. It is // used by [gRPC](https://github.com/grpc). Each `Status` message contains @@ -53,15 +48,17 @@ type Status struct { sizeCache protoimpl.SizeCache unknownFields protoimpl.UnknownFields - // The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code]. + // The status code, which should be an enum value of + // [google.rpc.Code][google.rpc.Code]. Code int32 `protobuf:"varint,1,opt,name=code,proto3" json:"code,omitempty"` // A developer-facing error message, which should be in English. Any // user-facing error message should be localized and sent in the - // [google.rpc.Status.details][google.rpc.Status.details] field, or localized by the client. + // [google.rpc.Status.details][google.rpc.Status.details] field, or localized + // by the client. Message string `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"` // A list of messages that carry the error details. There is a common set of // message types for APIs to use. - Details []*any.Any `protobuf:"bytes,3,rep,name=details,proto3" json:"details,omitempty"` + Details []*anypb.Any `protobuf:"bytes,3,rep,name=details,proto3" json:"details,omitempty"` } func (x *Status) Reset() { @@ -110,7 +107,7 @@ func (x *Status) GetMessage() string { return "" } -func (x *Status) GetDetails() []*any.Any { +func (x *Status) GetDetails() []*anypb.Any { if x != nil { return x.Details } @@ -154,8 +151,8 @@ func file_google_rpc_status_proto_rawDescGZIP() []byte { var file_google_rpc_status_proto_msgTypes = make([]protoimpl.MessageInfo, 1) var file_google_rpc_status_proto_goTypes = []interface{}{ - (*Status)(nil), // 0: google.rpc.Status - (*any.Any)(nil), // 1: google.protobuf.Any + (*Status)(nil), // 0: google.rpc.Status + (*anypb.Any)(nil), // 1: google.protobuf.Any } var file_google_rpc_status_proto_depIdxs = []int32{ 1, // 0: google.rpc.Status.details:type_name -> google.protobuf.Any diff --git a/vendor/google.golang.org/grpc/.travis.yml b/vendor/google.golang.org/grpc/.travis.yml deleted file mode 100644 index 5847d94e..00000000 --- a/vendor/google.golang.org/grpc/.travis.yml +++ /dev/null @@ -1,42 +0,0 @@ -language: go - -matrix: - include: - - go: 1.14.x - env: VET=1 GO111MODULE=on - - go: 1.14.x - env: RACE=1 GO111MODULE=on - - go: 1.14.x - env: RUN386=1 - - go: 1.14.x - env: GRPC_GO_RETRY=on - - go: 1.14.x - env: TESTEXTRAS=1 - - go: 1.13.x - env: GO111MODULE=on - - go: 1.12.x - env: GO111MODULE=on - - go: 1.11.x # Keep until interop tests no longer require Go1.11 - env: GO111MODULE=on - -go_import_path: google.golang.org/grpc - -before_install: - - if [[ "${GO111MODULE}" = "on" ]]; then mkdir "${HOME}/go"; export GOPATH="${HOME}/go"; fi - - if [[ -n "${RUN386}" ]]; then export GOARCH=386; fi - - if [[ "${TRAVIS_EVENT_TYPE}" = "cron" && -z "${RUN386}" ]]; then RACE=1; fi - - if [[ "${TRAVIS_EVENT_TYPE}" != "cron" ]]; then export VET_SKIP_PROTO=1; fi - -install: - - try3() { eval "$*" || eval "$*" || eval "$*"; } - - try3 'if [[ "${GO111MODULE}" = "on" ]]; then go mod download; else make testdeps; fi' - - if [[ -n "${GAE}" ]]; then source ./install_gae.sh; make testappenginedeps; fi - - if [[ -n "${VET}" ]]; then ./vet.sh -install; fi - -script: - - set -e - - if [[ -n "${TESTEXTRAS}" ]]; then examples/examples_test.sh; security/advancedtls/examples/examples_test.sh; interop/interop_test.sh; make testsubmodule; exit 0; fi - - if [[ -n "${VET}" ]]; then ./vet.sh; fi - - if [[ -n "${GAE}" ]]; then make testappengine; exit 0; fi - - if [[ -n "${RACE}" ]]; then make testrace; exit 0; fi - - make test diff --git a/vendor/google.golang.org/grpc/CONTRIBUTING.md b/vendor/google.golang.org/grpc/CONTRIBUTING.md index cd03f8c7..608aa6e1 100644 --- a/vendor/google.golang.org/grpc/CONTRIBUTING.md +++ b/vendor/google.golang.org/grpc/CONTRIBUTING.md @@ -20,6 +20,15 @@ How to get your contributions merged smoothly and quickly. both author's & review's time is wasted. Create more PRs to address different concerns and everyone will be happy. +- If you are searching for features to work on, issues labeled [Status: Help + Wanted](https://github.com/grpc/grpc-go/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3A%22Status%3A+Help+Wanted%22) + is a great place to start. These issues are well-documented and usually can be + resolved with a single pull request. + +- If you are adding a new file, make sure it has the copyright message template + at the top as a comment. You can copy over the message from an existing file + and update the year. + - The grpc package should only depend on standard Go packages and a small number of exceptions. If your contribution introduces new dependencies which are NOT in the [list](https://godoc.org/google.golang.org/grpc?imports), you need a @@ -32,14 +41,18 @@ How to get your contributions merged smoothly and quickly. - Provide a good **PR description** as a record of **what** change is being made and **why** it was made. Link to a github issue if it exists. -- Don't fix code style and formatting unless you are already changing that line - to address an issue. PRs with irrelevant changes won't be merged. If you do - want to fix formatting or style, do that in a separate PR. +- If you want to fix formatting or style, consider whether your changes are an + obvious improvement or might be considered a personal preference. If a style + change is based on preference, it likely will not be accepted. If it corrects + widely agreed-upon anti-patterns, then please do create a PR and explain the + benefits of the change. - Unless your PR is trivial, you should expect there will be reviewer comments - that you'll need to address before merging. We expect you to be reasonably - responsive to those comments, otherwise the PR will be closed after 2-3 weeks - of inactivity. + that you'll need to address before merging. We'll mark it as `Status: Requires + Reporter Clarification` if we expect you to respond to these comments in a + timely manner. If the PR remains inactive for 6 days, it will be marked as + `stale` and automatically close 7 days after that if we don't hear back from + you. - Maintain **clean commit history** and use **meaningful commit messages**. PRs with messy commit history are difficult to review and won't be merged. Use @@ -53,9 +66,8 @@ How to get your contributions merged smoothly and quickly. - **All tests need to be passing** before your change can be merged. We recommend you **run tests locally** before creating your PR to catch breakages early on. - - `make all` to test everything, OR - - `make vet` to catch vet errors - - `make test` to run the tests - - `make testrace` to run tests in race mode + - `VET_SKIP_PROTO=1 ./vet.sh` to catch vet errors + - `go test -cpu 1,4 -timeout 7m ./...` to run the tests + - `go test -race -cpu 1,4 -timeout 7m ./...` to run tests in race mode - Exceptions to the rules can be made if there's a compelling reason for doing so. diff --git a/vendor/google.golang.org/grpc/MAINTAINERS.md b/vendor/google.golang.org/grpc/MAINTAINERS.md index 093c82b3..c6672c0a 100644 --- a/vendor/google.golang.org/grpc/MAINTAINERS.md +++ b/vendor/google.golang.org/grpc/MAINTAINERS.md @@ -8,17 +8,18 @@ See [CONTRIBUTING.md](https://github.com/grpc/grpc-community/blob/master/CONTRIB for general contribution guidelines. ## Maintainers (in alphabetical order) -- [canguler](https://github.com/canguler), Google LLC + - [cesarghali](https://github.com/cesarghali), Google LLC - [dfawley](https://github.com/dfawley), Google LLC - [easwars](https://github.com/easwars), Google LLC -- [jadekler](https://github.com/jadekler), Google LLC - [menghanl](https://github.com/menghanl), Google LLC - [srini100](https://github.com/srini100), Google LLC ## Emeritus Maintainers (in alphabetical order) - [adelez](https://github.com/adelez), Google LLC +- [canguler](https://github.com/canguler), Google LLC - [iamqizhao](https://github.com/iamqizhao), Google LLC +- [jadekler](https://github.com/jadekler), Google LLC - [jtattermusch](https://github.com/jtattermusch), Google LLC - [lyuxuan](https://github.com/lyuxuan), Google LLC - [makmukhi](https://github.com/makmukhi), Google LLC diff --git a/vendor/google.golang.org/grpc/Makefile b/vendor/google.golang.org/grpc/Makefile index 1f0722f1..1f896092 100644 --- a/vendor/google.golang.org/grpc/Makefile +++ b/vendor/google.golang.org/grpc/Makefile @@ -41,8 +41,6 @@ vetdeps: clean \ proto \ test \ - testappengine \ - testappenginedeps \ testrace \ vet \ vetdeps diff --git a/vendor/google.golang.org/grpc/NOTICE.txt b/vendor/google.golang.org/grpc/NOTICE.txt new file mode 100644 index 00000000..53019774 --- /dev/null +++ b/vendor/google.golang.org/grpc/NOTICE.txt @@ -0,0 +1,13 @@ +Copyright 2014 gRPC authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/vendor/google.golang.org/grpc/README.md b/vendor/google.golang.org/grpc/README.md index 3949a683..0e6ae69a 100644 --- a/vendor/google.golang.org/grpc/README.md +++ b/vendor/google.golang.org/grpc/README.md @@ -136,6 +136,6 @@ errors. [Go module]: https://github.com/golang/go/wiki/Modules [gRPC]: https://grpc.io [Go gRPC docs]: https://grpc.io/docs/languages/go -[Performance benchmark]: https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5652536396611584&widget=490377658&container=1286539696 +[Performance benchmark]: https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5180705743044608 [quick start]: https://grpc.io/docs/languages/go/quickstart [go-releases]: https://golang.org/doc/devel/release.html diff --git a/vendor/google.golang.org/grpc/attributes/attributes.go b/vendor/google.golang.org/grpc/attributes/attributes.go index 3220d87b..49712aca 100644 --- a/vendor/google.golang.org/grpc/attributes/attributes.go +++ b/vendor/google.golang.org/grpc/attributes/attributes.go @@ -19,61 +19,124 @@ // Package attributes defines a generic key/value store used in various gRPC // components. // -// Experimental +// # Experimental // // Notice: This package is EXPERIMENTAL and may be changed or removed in a // later release. package attributes -import "fmt" +import ( + "fmt" + "strings" +) // Attributes is an immutable struct for storing and retrieving generic // key/value pairs. Keys must be hashable, and users should define their own -// types for keys. +// types for keys. Values should not be modified after they are added to an +// Attributes or if they were received from one. If values implement 'Equal(o +// interface{}) bool', it will be called by (*Attributes).Equal to determine +// whether two values with the same key should be considered equal. type Attributes struct { m map[interface{}]interface{} } -// New returns a new Attributes containing all key/value pairs in kvs. If the -// same key appears multiple times, the last value overwrites all previous -// values for that key. Panics if len(kvs) is not even. -func New(kvs ...interface{}) *Attributes { - if len(kvs)%2 != 0 { - panic(fmt.Sprintf("attributes.New called with unexpected input: len(kvs) = %v", len(kvs))) - } - a := &Attributes{m: make(map[interface{}]interface{}, len(kvs)/2)} - for i := 0; i < len(kvs)/2; i++ { - a.m[kvs[i*2]] = kvs[i*2+1] - } - return a +// New returns a new Attributes containing the key/value pair. +func New(key, value interface{}) *Attributes { + return &Attributes{m: map[interface{}]interface{}{key: value}} } -// WithValues returns a new Attributes containing all key/value pairs in a and -// kvs. Panics if len(kvs) is not even. If the same key appears multiple -// times, the last value overwrites all previous values for that key. To -// remove an existing key, use a nil value. -func (a *Attributes) WithValues(kvs ...interface{}) *Attributes { +// WithValue returns a new Attributes containing the previous keys and values +// and the new key/value pair. If the same key appears multiple times, the +// last value overwrites all previous values for that key. To remove an +// existing key, use a nil value. value should not be modified later. +func (a *Attributes) WithValue(key, value interface{}) *Attributes { if a == nil { - return New(kvs...) - } - if len(kvs)%2 != 0 { - panic(fmt.Sprintf("attributes.New called with unexpected input: len(kvs) = %v", len(kvs))) + return New(key, value) } - n := &Attributes{m: make(map[interface{}]interface{}, len(a.m)+len(kvs)/2)} + n := &Attributes{m: make(map[interface{}]interface{}, len(a.m)+1)} for k, v := range a.m { n.m[k] = v } - for i := 0; i < len(kvs)/2; i++ { - n.m[kvs[i*2]] = kvs[i*2+1] - } + n.m[key] = value return n } // Value returns the value associated with these attributes for key, or nil if -// no value is associated with key. +// no value is associated with key. The returned value should not be modified. func (a *Attributes) Value(key interface{}) interface{} { if a == nil { return nil } return a.m[key] } + +// Equal returns whether a and o are equivalent. If 'Equal(o interface{}) +// bool' is implemented for a value in the attributes, it is called to +// determine if the value matches the one stored in the other attributes. If +// Equal is not implemented, standard equality is used to determine if the two +// values are equal. Note that some types (e.g. maps) aren't comparable by +// default, so they must be wrapped in a struct, or in an alias type, with Equal +// defined. +func (a *Attributes) Equal(o *Attributes) bool { + if a == nil && o == nil { + return true + } + if a == nil || o == nil { + return false + } + if len(a.m) != len(o.m) { + return false + } + for k, v := range a.m { + ov, ok := o.m[k] + if !ok { + // o missing element of a + return false + } + if eq, ok := v.(interface{ Equal(o interface{}) bool }); ok { + if !eq.Equal(ov) { + return false + } + } else if v != ov { + // Fallback to a standard equality check if Value is unimplemented. + return false + } + } + return true +} + +// String prints the attribute map. If any key or values throughout the map +// implement fmt.Stringer, it calls that method and appends. +func (a *Attributes) String() string { + var sb strings.Builder + sb.WriteString("{") + first := true + for k, v := range a.m { + if !first { + sb.WriteString(", ") + } + sb.WriteString(fmt.Sprintf("%q: %q ", str(k), str(v))) + first = false + } + sb.WriteString("}") + return sb.String() +} + +func str(x interface{}) string { + if v, ok := x.(fmt.Stringer); ok { + return v.String() + } else if v, ok := x.(string); ok { + return v + } + return fmt.Sprintf("<%p>", x) +} + +// MarshalJSON helps implement the json.Marshaler interface, thereby rendering +// the Attributes correctly when printing (via pretty.JSON) structs containing +// Attributes as fields. +// +// Is it impossible to unmarshal attributes from a JSON representation and this +// method is meant only for debugging purposes. +func (a *Attributes) MarshalJSON() ([]byte, error) { + return []byte(a.String()), nil +} diff --git a/vendor/google.golang.org/grpc/backoff.go b/vendor/google.golang.org/grpc/backoff.go index 542594f5..29475e31 100644 --- a/vendor/google.golang.org/grpc/backoff.go +++ b/vendor/google.golang.org/grpc/backoff.go @@ -48,7 +48,7 @@ type BackoffConfig struct { // here for more details: // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. diff --git a/vendor/google.golang.org/grpc/balancer/balancer.go b/vendor/google.golang.org/grpc/balancer/balancer.go index ab531f4c..8f00523c 100644 --- a/vendor/google.golang.org/grpc/balancer/balancer.go +++ b/vendor/google.golang.org/grpc/balancer/balancer.go @@ -27,6 +27,7 @@ import ( "net" "strings" + "google.golang.org/grpc/channelz" "google.golang.org/grpc/connectivity" "google.golang.org/grpc/credentials" "google.golang.org/grpc/internal" @@ -75,24 +76,26 @@ func Get(name string) Builder { return nil } -// SubConn represents a gRPC sub connection. -// Each sub connection contains a list of addresses. gRPC will -// try to connect to them (in sequence), and stop trying the -// remainder once one connection is successful. +// A SubConn represents a single connection to a gRPC backend service. // -// The reconnect backoff will be applied on the list, not a single address. -// For example, try_on_all_addresses -> backoff -> try_on_all_addresses. +// Each SubConn contains a list of addresses. // -// All SubConns start in IDLE, and will not try to connect. To trigger -// the connecting, Balancers must call Connect. -// When the connection encounters an error, it will reconnect immediately. -// When the connection becomes IDLE, it will not reconnect unless Connect is -// called. +// All SubConns start in IDLE, and will not try to connect. To trigger the +// connecting, Balancers must call Connect. If a connection re-enters IDLE, +// Balancers must call Connect again to trigger a new connection attempt. // -// This interface is to be implemented by gRPC. Users should not need a -// brand new implementation of this interface. For the situations like -// testing, the new implementation should embed this interface. This allows -// gRPC to add new methods to this interface. +// gRPC will try to connect to the addresses in sequence, and stop trying the +// remainder once the first connection is successful. If an attempt to connect +// to all addresses encounters an error, the SubConn will enter +// TRANSIENT_FAILURE for a backoff period, and then transition to IDLE. +// +// Once established, if a connection is lost, the SubConn will transition +// directly to IDLE. +// +// This interface is to be implemented by gRPC. Users should not need their own +// implementation of this interface. For situations like testing, any +// implementations should embed this interface. This allows gRPC to add new +// methods to this interface. type SubConn interface { // UpdateAddresses updates the addresses used in this SubConn. // gRPC checks if currently-connected address is still in the new list. @@ -107,6 +110,11 @@ type SubConn interface { UpdateAddresses([]resolver.Address) // Connect starts the connecting for this SubConn. Connect() + // GetOrBuildProducer returns a reference to the existing Producer for this + // ProducerBuilder in this SubConn, or, if one does not currently exist, + // creates a new one and returns it. Returns a close function which must + // be called when the Producer is no longer needed. + GetOrBuildProducer(ProducerBuilder) (p Producer, close func()) } // NewSubConnOptions contains options to create new SubConn. @@ -172,25 +180,32 @@ type ClientConn interface { // BuildOptions contains additional information for Build. type BuildOptions struct { - // DialCreds is the transport credential the Balancer implementation can - // use to dial to a remote load balancer server. The Balancer implementations - // can ignore this if it does not need to talk to another party securely. + // DialCreds is the transport credentials to use when communicating with a + // remote load balancer server. Balancer implementations which do not + // communicate with a remote load balancer server can ignore this field. DialCreds credentials.TransportCredentials - // CredsBundle is the credentials bundle that the Balancer can use. + // CredsBundle is the credentials bundle to use when communicating with a + // remote load balancer server. Balancer implementations which do not + // communicate with a remote load balancer server can ignore this field. CredsBundle credentials.Bundle - // Dialer is the custom dialer the Balancer implementation can use to dial - // to a remote load balancer server. The Balancer implementations - // can ignore this if it doesn't need to talk to remote balancer. + // Dialer is the custom dialer to use when communicating with a remote load + // balancer server. Balancer implementations which do not communicate with a + // remote load balancer server can ignore this field. Dialer func(context.Context, string) (net.Conn, error) - // ChannelzParentID is the entity parent's channelz unique identification number. - ChannelzParentID int64 + // Authority is the server name to use as part of the authentication + // handshake when communicating with a remote load balancer server. Balancer + // implementations which do not communicate with a remote load balancer + // server can ignore this field. + Authority string + // ChannelzParentID is the parent ClientConn's channelz ID. + ChannelzParentID *channelz.Identifier // CustomUserAgent is the custom user agent set on the parent ClientConn. // The balancer should set the same custom user agent if it creates a // ClientConn. CustomUserAgent string - // Target contains the parsed address info of the dial target. It is the same resolver.Target as - // passed to the resolver. - // See the documentation for the resolver.Target type for details about what it contains. + // Target contains the parsed address info of the dial target. It is the + // same resolver.Target as passed to the resolver. See the documentation for + // the resolver.Target type for details about what it contains. Target resolver.Target } @@ -234,7 +249,7 @@ type DoneInfo struct { // ServerLoad is the load received from server. It's usually sent as part of // trailing metadata. // - // The only supported type now is *orca_v1.LoadReport. + // The only supported type now is *orca_v3.LoadReport. ServerLoad interface{} } @@ -264,6 +279,14 @@ type PickResult struct { // type, Done may not be called. May be nil if the balancer does not wish // to be notified when the RPC completes. Done func(DoneInfo) + + // Metadata provides a way for LB policies to inject arbitrary per-call + // metadata. Any metadata returned here will be merged with existing + // metadata added by the client application. + // + // LB policies with child policies are responsible for propagating metadata + // injected by their children to the ClientConn, as part of Pick(). + Metadata metadata.MD } // TransientFailureError returns e. It exists for backward compatibility and @@ -326,6 +349,20 @@ type Balancer interface { Close() } +// ExitIdler is an optional interface for balancers to implement. If +// implemented, ExitIdle will be called when ClientConn.Connect is called, if +// the ClientConn is idle. If unimplemented, ClientConn.Connect will cause +// all SubConns to connect. +// +// Notice: it will be required for all balancers to implement this in a future +// release. +type ExitIdler interface { + // ExitIdle instructs the LB policy to reconnect to backends / exit the + // IDLE state, if appropriate and possible. Note that SubConns that enter + // the IDLE state will not reconnect until SubConn.Connect is called. + ExitIdle() +} + // SubConnState describes the state of a SubConn. type SubConnState struct { // ConnectivityState is the connectivity state of the SubConn. @@ -348,41 +385,20 @@ type ClientConnState struct { // problem with the provided name resolver data. var ErrBadResolverState = errors.New("bad resolver state") -// ConnectivityStateEvaluator takes the connectivity states of multiple SubConns -// and returns one aggregated connectivity state. -// -// It's not thread safe. -type ConnectivityStateEvaluator struct { - numReady uint64 // Number of addrConns in ready state. - numConnecting uint64 // Number of addrConns in connecting state. +// A ProducerBuilder is a simple constructor for a Producer. It is used by the +// SubConn to create producers when needed. +type ProducerBuilder interface { + // Build creates a Producer. The first parameter is always a + // grpc.ClientConnInterface (a type to allow creating RPCs/streams on the + // associated SubConn), but is declared as interface{} to avoid a + // dependency cycle. Should also return a close function that will be + // called when all references to the Producer have been given up. + Build(grpcClientConnInterface interface{}) (p Producer, close func()) } -// RecordTransition records state change happening in subConn and based on that -// it evaluates what aggregated state should be. -// -// - If at least one SubConn in Ready, the aggregated state is Ready; -// - Else if at least one SubConn in Connecting, the aggregated state is Connecting; -// - Else the aggregated state is TransientFailure. -// -// Idle and Shutdown are not considered. -func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State { - // Update counters. - for idx, state := range []connectivity.State{oldState, newState} { - updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new. - switch state { - case connectivity.Ready: - cse.numReady += updateVal - case connectivity.Connecting: - cse.numConnecting += updateVal - } - } - - // Evaluate. - if cse.numReady > 0 { - return connectivity.Ready - } - if cse.numConnecting > 0 { - return connectivity.Connecting - } - return connectivity.TransientFailure +// A Producer is a type shared among potentially many consumers. It is +// associated with a SubConn, and an implementation will typically contain +// other methods to provide additional functionality, e.g. configuration or +// subscription registration. +type Producer interface { } diff --git a/vendor/google.golang.org/grpc/balancer/base/balancer.go b/vendor/google.golang.org/grpc/balancer/base/balancer.go index c883efa0..3929c26d 100644 --- a/vendor/google.golang.org/grpc/balancer/base/balancer.go +++ b/vendor/google.golang.org/grpc/balancer/base/balancer.go @@ -22,7 +22,6 @@ import ( "errors" "fmt" - "google.golang.org/grpc/attributes" "google.golang.org/grpc/balancer" "google.golang.org/grpc/connectivity" "google.golang.org/grpc/grpclog" @@ -42,10 +41,11 @@ func (bb *baseBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) cc: cc, pickerBuilder: bb.pickerBuilder, - subConns: make(map[resolver.Address]subConnInfo), + subConns: resolver.NewAddressMap(), scStates: make(map[balancer.SubConn]connectivity.State), csEvltr: &balancer.ConnectivityStateEvaluator{}, config: bb.config, + state: connectivity.Connecting, } // Initialize picker to a picker that always returns // ErrNoSubConnAvailable, because when state of a SubConn changes, we @@ -58,11 +58,6 @@ func (bb *baseBuilder) Name() string { return bb.name } -type subConnInfo struct { - subConn balancer.SubConn - attrs *attributes.Attributes -} - type baseBalancer struct { cc balancer.ClientConn pickerBuilder PickerBuilder @@ -70,7 +65,7 @@ type baseBalancer struct { csEvltr *balancer.ConnectivityStateEvaluator state connectivity.State - subConns map[resolver.Address]subConnInfo // `attributes` is stripped from the keys of this map (the addresses) + subConns *resolver.AddressMap scStates map[balancer.SubConn]connectivity.State picker balancer.Picker config Config @@ -81,7 +76,7 @@ type baseBalancer struct { func (b *baseBalancer) ResolverError(err error) { b.resolverErr = err - if len(b.subConns) == 0 { + if b.subConns.Len() == 0 { b.state = connectivity.TransientFailure } @@ -105,52 +100,29 @@ func (b *baseBalancer) UpdateClientConnState(s balancer.ClientConnState) error { // Successful resolution; clear resolver error and ensure we return nil. b.resolverErr = nil // addrsSet is the set converted from addrs, it's used for quick lookup of an address. - addrsSet := make(map[resolver.Address]struct{}) + addrsSet := resolver.NewAddressMap() for _, a := range s.ResolverState.Addresses { - // Strip attributes from addresses before using them as map keys. So - // that when two addresses only differ in attributes pointers (but with - // the same attribute content), they are considered the same address. - // - // Note that this doesn't handle the case where the attribute content is - // different. So if users want to set different attributes to create - // duplicate connections to the same backend, it doesn't work. This is - // fine for now, because duplicate is done by setting Metadata today. - // - // TODO: read attributes to handle duplicate connections. - aNoAttrs := a - aNoAttrs.Attributes = nil - addrsSet[aNoAttrs] = struct{}{} - if scInfo, ok := b.subConns[aNoAttrs]; !ok { + addrsSet.Set(a, nil) + if _, ok := b.subConns.Get(a); !ok { // a is a new address (not existing in b.subConns). - // - // When creating SubConn, the original address with attributes is - // passed through. So that connection configurations in attributes - // (like creds) will be used. sc, err := b.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{HealthCheckEnabled: b.config.HealthCheck}) if err != nil { logger.Warningf("base.baseBalancer: failed to create new SubConn: %v", err) continue } - b.subConns[aNoAttrs] = subConnInfo{subConn: sc, attrs: a.Attributes} + b.subConns.Set(a, sc) b.scStates[sc] = connectivity.Idle + b.csEvltr.RecordTransition(connectivity.Shutdown, connectivity.Idle) sc.Connect() - } else { - // Always update the subconn's address in case the attributes - // changed. - // - // The SubConn does a reflect.DeepEqual of the new and old - // addresses. So this is a noop if the current address is the same - // as the old one (including attributes). - scInfo.attrs = a.Attributes - b.subConns[aNoAttrs] = scInfo - b.cc.UpdateAddresses(scInfo.subConn, []resolver.Address{a}) } } - for a, scInfo := range b.subConns { + for _, a := range b.subConns.Keys() { + sci, _ := b.subConns.Get(a) + sc := sci.(balancer.SubConn) // a was removed by resolver. - if _, ok := addrsSet[a]; !ok { - b.cc.RemoveSubConn(scInfo.subConn) - delete(b.subConns, a) + if _, ok := addrsSet.Get(a); !ok { + b.cc.RemoveSubConn(sc) + b.subConns.Delete(a) // Keep the state of this sc in b.scStates until sc's state becomes Shutdown. // The entry will be deleted in UpdateSubConnState. } @@ -163,6 +135,9 @@ func (b *baseBalancer) UpdateClientConnState(s balancer.ClientConnState) error { b.ResolverError(errors.New("produced zero addresses")) return balancer.ErrBadResolverState } + + b.regeneratePicker() + b.cc.UpdateState(balancer.State{ConnectivityState: b.state, Picker: b.picker}) return nil } @@ -182,8 +157,8 @@ func (b *baseBalancer) mergeErrors() error { // regeneratePicker takes a snapshot of the balancer, and generates a picker // from it. The picker is -// - errPicker if the balancer is in TransientFailure, -// - built by the pickerBuilder with all READY SubConns otherwise. +// - errPicker if the balancer is in TransientFailure, +// - built by the pickerBuilder with all READY SubConns otherwise. func (b *baseBalancer) regeneratePicker() { if b.state == connectivity.TransientFailure { b.picker = NewErrPicker(b.mergeErrors()) @@ -192,10 +167,11 @@ func (b *baseBalancer) regeneratePicker() { readySCs := make(map[balancer.SubConn]SubConnInfo) // Filter out all ready SCs from full subConn map. - for addr, scInfo := range b.subConns { - if st, ok := b.scStates[scInfo.subConn]; ok && st == connectivity.Ready { - addr.Attributes = scInfo.attrs - readySCs[scInfo.subConn] = SubConnInfo{Address: addr} + for _, addr := range b.subConns.Keys() { + sci, _ := b.subConns.Get(addr) + sc := sci.(balancer.SubConn) + if st, ok := b.scStates[sc]; ok && st == connectivity.Ready { + readySCs[sc] = SubConnInfo{Address: addr} } } b.picker = b.pickerBuilder.Build(PickerBuildInfo{ReadySCs: readySCs}) @@ -213,10 +189,14 @@ func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.Su } return } - if oldS == connectivity.TransientFailure && s == connectivity.Connecting { - // Once a subconn enters TRANSIENT_FAILURE, ignore subsequent + if oldS == connectivity.TransientFailure && + (s == connectivity.Connecting || s == connectivity.Idle) { + // Once a subconn enters TRANSIENT_FAILURE, ignore subsequent IDLE or // CONNECTING transitions to prevent the aggregated state from being // always CONNECTING when many backends exist but are all down. + if s == connectivity.Idle { + sc.Connect() + } return } b.scStates[sc] = s @@ -242,7 +222,6 @@ func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.Su b.state == connectivity.TransientFailure { b.regeneratePicker() } - b.cc.UpdateState(balancer.State{ConnectivityState: b.state, Picker: b.picker}) } @@ -251,6 +230,11 @@ func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.Su func (b *baseBalancer) Close() { } +// ExitIdle is a nop because the base balancer attempts to stay connected to +// all SubConns at all times. +func (b *baseBalancer) ExitIdle() { +} + // NewErrPicker returns a Picker that always returns err on Pick(). func NewErrPicker(err error) balancer.Picker { return &errPicker{err: err} diff --git a/vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go b/vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go new file mode 100644 index 00000000..c3341358 --- /dev/null +++ b/vendor/google.golang.org/grpc/balancer/conn_state_evaluator.go @@ -0,0 +1,74 @@ +/* + * + * Copyright 2022 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package balancer + +import "google.golang.org/grpc/connectivity" + +// ConnectivityStateEvaluator takes the connectivity states of multiple SubConns +// and returns one aggregated connectivity state. +// +// It's not thread safe. +type ConnectivityStateEvaluator struct { + numReady uint64 // Number of addrConns in ready state. + numConnecting uint64 // Number of addrConns in connecting state. + numTransientFailure uint64 // Number of addrConns in transient failure state. + numIdle uint64 // Number of addrConns in idle state. +} + +// RecordTransition records state change happening in subConn and based on that +// it evaluates what aggregated state should be. +// +// - If at least one SubConn in Ready, the aggregated state is Ready; +// - Else if at least one SubConn in Connecting, the aggregated state is Connecting; +// - Else if at least one SubConn is Idle, the aggregated state is Idle; +// - Else if at least one SubConn is TransientFailure (or there are no SubConns), the aggregated state is Transient Failure. +// +// Shutdown is not considered. +func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State { + // Update counters. + for idx, state := range []connectivity.State{oldState, newState} { + updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new. + switch state { + case connectivity.Ready: + cse.numReady += updateVal + case connectivity.Connecting: + cse.numConnecting += updateVal + case connectivity.TransientFailure: + cse.numTransientFailure += updateVal + case connectivity.Idle: + cse.numIdle += updateVal + } + } + return cse.CurrentState() +} + +// CurrentState returns the current aggregate conn state by evaluating the counters +func (cse *ConnectivityStateEvaluator) CurrentState() connectivity.State { + // Evaluate. + if cse.numReady > 0 { + return connectivity.Ready + } + if cse.numConnecting > 0 { + return connectivity.Connecting + } + if cse.numIdle > 0 { + return connectivity.Idle + } + return connectivity.TransientFailure +} diff --git a/vendor/google.golang.org/grpc/balancer/grpclb/state/state.go b/vendor/google.golang.org/grpc/balancer/grpclb/state/state.go index a24264a3..4ecfa1c2 100644 --- a/vendor/google.golang.org/grpc/balancer/grpclb/state/state.go +++ b/vendor/google.golang.org/grpc/balancer/grpclb/state/state.go @@ -39,7 +39,7 @@ type State struct { // Set returns a copy of the provided state with attributes containing s. s's // data should not be mutated after calling Set. func Set(state resolver.State, s *State) resolver.State { - state.Attributes = state.Attributes.WithValues(key, s) + state.Attributes = state.Attributes.WithValue(key, s) return state } diff --git a/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go b/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go index 43c2a153..f7031ad2 100644 --- a/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go +++ b/vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go @@ -22,7 +22,7 @@ package roundrobin import ( - "sync" + "sync/atomic" "google.golang.org/grpc/balancer" "google.golang.org/grpc/balancer/base" @@ -47,11 +47,11 @@ func init() { type rrPickerBuilder struct{} func (*rrPickerBuilder) Build(info base.PickerBuildInfo) balancer.Picker { - logger.Infof("roundrobinPicker: newPicker called with info: %v", info) + logger.Infof("roundrobinPicker: Build called with info: %v", info) if len(info.ReadySCs) == 0 { return base.NewErrPicker(balancer.ErrNoSubConnAvailable) } - var scs []balancer.SubConn + scs := make([]balancer.SubConn, 0, len(info.ReadySCs)) for sc := range info.ReadySCs { scs = append(scs, sc) } @@ -60,7 +60,7 @@ func (*rrPickerBuilder) Build(info base.PickerBuildInfo) balancer.Picker { // Start at a random index, as the same RR balancer rebuilds a new // picker when SubConn states change, and we don't want to apply excess // load to the first server in the list. - next: grpcrand.Intn(len(scs)), + next: uint32(grpcrand.Intn(len(scs))), } } @@ -69,15 +69,13 @@ type rrPicker struct { // created. The slice is immutable. Each Get() will do a round robin // selection from it and return the selected SubConn. subConns []balancer.SubConn - - mu sync.Mutex - next int + next uint32 } func (p *rrPicker) Pick(balancer.PickInfo) (balancer.PickResult, error) { - p.mu.Lock() - sc := p.subConns[p.next] - p.next = (p.next + 1) % len(p.subConns) - p.mu.Unlock() + subConnsLen := uint32(len(p.subConns)) + nextIndex := atomic.AddUint32(&p.next, 1) + + sc := p.subConns[nextIndex%subConnsLen] return balancer.PickResult{SubConn: sc}, nil } diff --git a/vendor/google.golang.org/grpc/balancer_conn_wrappers.go b/vendor/google.golang.org/grpc/balancer_conn_wrappers.go index 4cc7f915..04b9ad41 100644 --- a/vendor/google.golang.org/grpc/balancer_conn_wrappers.go +++ b/vendor/google.golang.org/grpc/balancer_conn_wrappers.go @@ -19,151 +19,331 @@ package grpc import ( + "context" "fmt" + "strings" "sync" "google.golang.org/grpc/balancer" "google.golang.org/grpc/connectivity" - "google.golang.org/grpc/internal/buffer" + "google.golang.org/grpc/internal/balancer/gracefulswitch" "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/internal/grpcsync" "google.golang.org/grpc/resolver" ) -// scStateUpdate contains the subConn and the new state it changed to. -type scStateUpdate struct { - sc balancer.SubConn - state connectivity.State - err error -} +type ccbMode int + +const ( + ccbModeActive = iota + ccbModeIdle + ccbModeClosed + ccbModeExitingIdle +) -// ccBalancerWrapper is a wrapper on top of cc for balancers. -// It implements balancer.ClientConn interface. +// ccBalancerWrapper sits between the ClientConn and the Balancer. +// +// ccBalancerWrapper implements methods corresponding to the ones on the +// balancer.Balancer interface. The ClientConn is free to call these methods +// concurrently and the ccBalancerWrapper ensures that calls from the ClientConn +// to the Balancer happen synchronously and in order. +// +// ccBalancerWrapper also implements the balancer.ClientConn interface and is +// passed to the Balancer implementations. It invokes unexported methods on the +// ClientConn to handle these calls from the Balancer. +// +// It uses the gracefulswitch.Balancer internally to ensure that balancer +// switches happen in a graceful manner. type ccBalancerWrapper struct { - cc *ClientConn - balancerMu sync.Mutex // synchronizes calls to the balancer - balancer balancer.Balancer - scBuffer *buffer.Unbounded - done *grpcsync.Event + // The following fields are initialized when the wrapper is created and are + // read-only afterwards, and therefore can be accessed without a mutex. + cc *ClientConn + opts balancer.BuildOptions + + // Outgoing (gRPC --> balancer) calls are guaranteed to execute in a + // mutually exclusive manner as they are scheduled in the serializer. Fields + // accessed *only* in these serializer callbacks, can therefore be accessed + // without a mutex. + balancer *gracefulswitch.Balancer + curBalancerName string - mu sync.Mutex - subConns map[*acBalancerWrapper]struct{} + // mu guards access to the below fields. Access to the serializer and its + // cancel function needs to be mutex protected because they are overwritten + // when the wrapper exits idle mode. + mu sync.Mutex + serializer *grpcsync.CallbackSerializer // To serialize all outoing calls. + serializerCancel context.CancelFunc // To close the seralizer at close/enterIdle time. + mode ccbMode // Tracks the current mode of the wrapper. } -func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.BuildOptions) *ccBalancerWrapper { +// newCCBalancerWrapper creates a new balancer wrapper. The underlying balancer +// is not created until the switchTo() method is invoked. +func newCCBalancerWrapper(cc *ClientConn, bopts balancer.BuildOptions) *ccBalancerWrapper { + ctx, cancel := context.WithCancel(context.Background()) ccb := &ccBalancerWrapper{ - cc: cc, - scBuffer: buffer.NewUnbounded(), - done: grpcsync.NewEvent(), - subConns: make(map[*acBalancerWrapper]struct{}), + cc: cc, + opts: bopts, + serializer: grpcsync.NewCallbackSerializer(ctx), + serializerCancel: cancel, } - go ccb.watcher() - ccb.balancer = b.Build(ccb, bopts) + ccb.balancer = gracefulswitch.NewBalancer(ccb, bopts) return ccb } -// watcher balancer functions sequentially, so the balancer can be implemented -// lock-free. -func (ccb *ccBalancerWrapper) watcher() { - for { - select { - case t := <-ccb.scBuffer.Get(): - ccb.scBuffer.Load() - if ccb.done.HasFired() { - break +// updateClientConnState is invoked by grpc to push a ClientConnState update to +// the underlying balancer. +func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) error { + ccb.mu.Lock() + errCh := make(chan error, 1) + // Here and everywhere else where Schedule() is called, it is done with the + // lock held. But the lock guards only the scheduling part. The actual + // callback is called asynchronously without the lock being held. + ok := ccb.serializer.Schedule(func(_ context.Context) { + // If the addresses specified in the update contain addresses of type + // "grpclb" and the selected LB policy is not "grpclb", these addresses + // will be filtered out and ccs will be modified with the updated + // address list. + if ccb.curBalancerName != grpclbName { + var addrs []resolver.Address + for _, addr := range ccs.ResolverState.Addresses { + if addr.Type == resolver.GRPCLB { + continue + } + addrs = append(addrs, addr) } - ccb.balancerMu.Lock() - su := t.(*scStateUpdate) - ccb.balancer.UpdateSubConnState(su.sc, balancer.SubConnState{ConnectivityState: su.state, ConnectionError: su.err}) - ccb.balancerMu.Unlock() - case <-ccb.done.Done(): + ccs.ResolverState.Addresses = addrs } + errCh <- ccb.balancer.UpdateClientConnState(*ccs) + }) + if !ok { + // If we are unable to schedule a function with the serializer, it + // indicates that it has been closed. A serializer is only closed when + // the wrapper is closed or is in idle. + ccb.mu.Unlock() + return fmt.Errorf("grpc: cannot send state update to a closed or idle balancer") + } + ccb.mu.Unlock() - if ccb.done.HasFired() { - ccb.balancer.Close() - ccb.mu.Lock() - scs := ccb.subConns - ccb.subConns = nil - ccb.mu.Unlock() - for acbw := range scs { - ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain) - } - ccb.UpdateState(balancer.State{ConnectivityState: connectivity.Connecting, Picker: nil}) + // We get here only if the above call to Schedule succeeds, in which case it + // is guaranteed that the scheduled function will run. Therefore it is safe + // to block on this channel. + err := <-errCh + if logger.V(2) && err != nil { + logger.Infof("error from balancer.UpdateClientConnState: %v", err) + } + return err +} + +// updateSubConnState is invoked by grpc to push a subConn state update to the +// underlying balancer. +func (ccb *ccBalancerWrapper) updateSubConnState(sc balancer.SubConn, s connectivity.State, err error) { + ccb.mu.Lock() + ccb.serializer.Schedule(func(_ context.Context) { + ccb.balancer.UpdateSubConnState(sc, balancer.SubConnState{ConnectivityState: s, ConnectionError: err}) + }) + ccb.mu.Unlock() +} + +func (ccb *ccBalancerWrapper) resolverError(err error) { + ccb.mu.Lock() + ccb.serializer.Schedule(func(_ context.Context) { + ccb.balancer.ResolverError(err) + }) + ccb.mu.Unlock() +} + +// switchTo is invoked by grpc to instruct the balancer wrapper to switch to the +// LB policy identified by name. +// +// ClientConn calls newCCBalancerWrapper() at creation time. Upon receipt of the +// first good update from the name resolver, it determines the LB policy to use +// and invokes the switchTo() method. Upon receipt of every subsequent update +// from the name resolver, it invokes this method. +// +// the ccBalancerWrapper keeps track of the current LB policy name, and skips +// the graceful balancer switching process if the name does not change. +func (ccb *ccBalancerWrapper) switchTo(name string) { + ccb.mu.Lock() + ccb.serializer.Schedule(func(_ context.Context) { + // TODO: Other languages use case-sensitive balancer registries. We should + // switch as well. See: https://github.com/grpc/grpc-go/issues/5288. + if strings.EqualFold(ccb.curBalancerName, name) { return } + ccb.buildLoadBalancingPolicy(name) + }) + ccb.mu.Unlock() +} + +// buildLoadBalancingPolicy performs the following: +// - retrieve a balancer builder for the given name. Use the default LB +// policy, pick_first, if no LB policy with name is found in the registry. +// - instruct the gracefulswitch balancer to switch to the above builder. This +// will actually build the new balancer. +// - update the `curBalancerName` field +// +// Must be called from a serializer callback. +func (ccb *ccBalancerWrapper) buildLoadBalancingPolicy(name string) { + builder := balancer.Get(name) + if builder == nil { + channelz.Warningf(logger, ccb.cc.channelzID, "Channel switches to new LB policy %q, since the specified LB policy %q was not registered", PickFirstBalancerName, name) + builder = newPickfirstBuilder() + } else { + channelz.Infof(logger, ccb.cc.channelzID, "Channel switches to new LB policy %q", name) } + + if err := ccb.balancer.SwitchTo(builder); err != nil { + channelz.Errorf(logger, ccb.cc.channelzID, "Channel failed to build new LB policy %q: %v", name, err) + return + } + ccb.curBalancerName = builder.Name() } func (ccb *ccBalancerWrapper) close() { - ccb.done.Fire() -} - -func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State, err error) { - // When updating addresses for a SubConn, if the address in use is not in - // the new addresses, the old ac will be tearDown() and a new ac will be - // created. tearDown() generates a state change with Shutdown state, we - // don't want the balancer to receive this state change. So before - // tearDown() on the old ac, ac.acbw (acWrapper) will be set to nil, and - // this function will be called with (nil, Shutdown). We don't need to call - // balancer method in this case. - if sc == nil { + channelz.Info(logger, ccb.cc.channelzID, "ccBalancerWrapper: closing") + ccb.closeBalancer(ccbModeClosed) +} + +// enterIdleMode is invoked by grpc when the channel enters idle mode upon +// expiry of idle_timeout. This call blocks until the balancer is closed. +func (ccb *ccBalancerWrapper) enterIdleMode() { + channelz.Info(logger, ccb.cc.channelzID, "ccBalancerWrapper: entering idle mode") + ccb.closeBalancer(ccbModeIdle) +} + +// closeBalancer is invoked when the channel is being closed or when it enters +// idle mode upon expiry of idle_timeout. +func (ccb *ccBalancerWrapper) closeBalancer(m ccbMode) { + ccb.mu.Lock() + if ccb.mode == ccbModeClosed || ccb.mode == ccbModeIdle { + ccb.mu.Unlock() return } - ccb.scBuffer.Put(&scStateUpdate{ - sc: sc, - state: s, - err: err, + + ccb.mode = m + done := ccb.serializer.Done + b := ccb.balancer + ok := ccb.serializer.Schedule(func(_ context.Context) { + // Close the serializer to ensure that no more calls from gRPC are sent + // to the balancer. + ccb.serializerCancel() + // Empty the current balancer name because we don't have a balancer + // anymore and also so that we act on the next call to switchTo by + // creating a new balancer specified by the new resolver. + ccb.curBalancerName = "" }) + if !ok { + ccb.mu.Unlock() + return + } + ccb.mu.Unlock() + + // Give enqueued callbacks a chance to finish. + <-done + // Spawn a goroutine to close the balancer (since it may block trying to + // cleanup all allocated resources) and return early. + go b.Close() } -func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) error { - ccb.balancerMu.Lock() - defer ccb.balancerMu.Unlock() - return ccb.balancer.UpdateClientConnState(*ccs) +// exitIdleMode is invoked by grpc when the channel exits idle mode either +// because of an RPC or because of an invocation of the Connect() API. This +// recreates the balancer that was closed previously when entering idle mode. +// +// If the channel is not in idle mode, we know for a fact that we are here as a +// result of the user calling the Connect() method on the ClientConn. In this +// case, we can simply forward the call to the underlying balancer, instructing +// it to reconnect to the backends. +func (ccb *ccBalancerWrapper) exitIdleMode() { + ccb.mu.Lock() + if ccb.mode == ccbModeClosed { + // Request to exit idle is a no-op when wrapper is already closed. + ccb.mu.Unlock() + return + } + + if ccb.mode == ccbModeIdle { + // Recreate the serializer which was closed when we entered idle. + ctx, cancel := context.WithCancel(context.Background()) + ccb.serializer = grpcsync.NewCallbackSerializer(ctx) + ccb.serializerCancel = cancel + } + + // The ClientConn guarantees that mutual exclusion between close() and + // exitIdleMode(), and since we just created a new serializer, we can be + // sure that the below function will be scheduled. + done := make(chan struct{}) + ccb.serializer.Schedule(func(_ context.Context) { + defer close(done) + + ccb.mu.Lock() + defer ccb.mu.Unlock() + + if ccb.mode != ccbModeIdle { + ccb.balancer.ExitIdle() + return + } + + // Gracefulswitch balancer does not support a switchTo operation after + // being closed. Hence we need to create a new one here. + ccb.balancer = gracefulswitch.NewBalancer(ccb, ccb.opts) + ccb.mode = ccbModeActive + channelz.Info(logger, ccb.cc.channelzID, "ccBalancerWrapper: exiting idle mode") + + }) + ccb.mu.Unlock() + + <-done } -func (ccb *ccBalancerWrapper) resolverError(err error) { - ccb.balancerMu.Lock() - ccb.balancer.ResolverError(err) - ccb.balancerMu.Unlock() +func (ccb *ccBalancerWrapper) isIdleOrClosed() bool { + ccb.mu.Lock() + defer ccb.mu.Unlock() + return ccb.mode == ccbModeIdle || ccb.mode == ccbModeClosed } func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) { - if len(addrs) <= 0 { - return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list") + if ccb.isIdleOrClosed() { + return nil, fmt.Errorf("grpc: cannot create SubConn when balancer is closed or idle") } - ccb.mu.Lock() - defer ccb.mu.Unlock() - if ccb.subConns == nil { - return nil, fmt.Errorf("grpc: ClientConn balancer wrapper was closed") + + if len(addrs) == 0 { + return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list") } ac, err := ccb.cc.newAddrConn(addrs, opts) if err != nil { + channelz.Warningf(logger, ccb.cc.channelzID, "acBalancerWrapper: NewSubConn: failed to newAddrConn: %v", err) return nil, err } - acbw := &acBalancerWrapper{ac: ac} - acbw.ac.mu.Lock() + acbw := &acBalancerWrapper{ac: ac, producers: make(map[balancer.ProducerBuilder]*refCountedProducer)} ac.acbw = acbw - acbw.ac.mu.Unlock() - ccb.subConns[acbw] = struct{}{} return acbw, nil } func (ccb *ccBalancerWrapper) RemoveSubConn(sc balancer.SubConn) { - acbw, ok := sc.(*acBalancerWrapper) - if !ok { + if ccb.isIdleOrClosed() { + // It it safe to ignore this call when the balancer is closed or in idle + // because the ClientConn takes care of closing the connections. + // + // Not returning early from here when the balancer is closed or in idle + // leads to a deadlock though, because of the following sequence of + // calls when holding cc.mu: + // cc.exitIdleMode --> ccb.enterIdleMode --> gsw.Close --> + // ccb.RemoveAddrConn --> cc.removeAddrConn return } - ccb.mu.Lock() - defer ccb.mu.Unlock() - if ccb.subConns == nil { + + acbw, ok := sc.(*acBalancerWrapper) + if !ok { return } - delete(ccb.subConns, acbw) - ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain) + ccb.cc.removeAddrConn(acbw.ac, errConnDrain) } func (ccb *ccBalancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver.Address) { + if ccb.isIdleOrClosed() { + return + } + acbw, ok := sc.(*acBalancerWrapper) if !ok { return @@ -172,11 +352,10 @@ func (ccb *ccBalancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resol } func (ccb *ccBalancerWrapper) UpdateState(s balancer.State) { - ccb.mu.Lock() - defer ccb.mu.Unlock() - if ccb.subConns == nil { + if ccb.isIdleOrClosed() { return } + // Update picker before updating state. Even though the ordering here does // not matter, it can lead to multiple calls of Pick in the common start-up // case where we wait for ready and then perform an RPC. If the picker is @@ -187,6 +366,10 @@ func (ccb *ccBalancerWrapper) UpdateState(s balancer.State) { } func (ccb *ccBalancerWrapper) ResolveNow(o resolver.ResolveNowOptions) { + if ccb.isIdleOrClosed() { + return + } + ccb.cc.resolveNow(o) } @@ -197,58 +380,80 @@ func (ccb *ccBalancerWrapper) Target() string { // acBalancerWrapper is a wrapper on top of ac for balancers. // It implements balancer.SubConn interface. type acBalancerWrapper struct { - mu sync.Mutex - ac *addrConn + ac *addrConn // read-only + + mu sync.Mutex + producers map[balancer.ProducerBuilder]*refCountedProducer +} + +func (acbw *acBalancerWrapper) String() string { + return fmt.Sprintf("SubConn(id:%d)", acbw.ac.channelzID.Int()) } func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) { - acbw.mu.Lock() - defer acbw.mu.Unlock() - if len(addrs) <= 0 { - acbw.ac.cc.removeAddrConn(acbw.ac, errConnDrain) - return + acbw.ac.updateAddrs(addrs) +} + +func (acbw *acBalancerWrapper) Connect() { + go acbw.ac.connect() +} + +// NewStream begins a streaming RPC on the addrConn. If the addrConn is not +// ready, blocks until it is or ctx expires. Returns an error when the context +// expires or the addrConn is shut down. +func (acbw *acBalancerWrapper) NewStream(ctx context.Context, desc *StreamDesc, method string, opts ...CallOption) (ClientStream, error) { + transport, err := acbw.ac.getTransport(ctx) + if err != nil { + return nil, err } - if !acbw.ac.tryUpdateAddrs(addrs) { - cc := acbw.ac.cc - opts := acbw.ac.scopts - acbw.ac.mu.Lock() - // Set old ac.acbw to nil so the Shutdown state update will be ignored - // by balancer. - // - // TODO(bar) the state transition could be wrong when tearDown() old ac - // and creating new ac, fix the transition. - acbw.ac.acbw = nil - acbw.ac.mu.Unlock() - acState := acbw.ac.getState() - acbw.ac.cc.removeAddrConn(acbw.ac, errConnDrain) - - if acState == connectivity.Shutdown { - return - } + return newNonRetryClientStream(ctx, desc, method, transport, acbw.ac, opts...) +} - ac, err := cc.newAddrConn(addrs, opts) - if err != nil { - channelz.Warningf(logger, acbw.ac.channelzID, "acBalancerWrapper: UpdateAddresses: failed to newAddrConn: %v", err) - return - } - acbw.ac = ac - ac.mu.Lock() - ac.acbw = acbw - ac.mu.Unlock() - if acState != connectivity.Idle { - ac.connect() - } +// Invoke performs a unary RPC. If the addrConn is not ready, returns +// errSubConnNotReady. +func (acbw *acBalancerWrapper) Invoke(ctx context.Context, method string, args interface{}, reply interface{}, opts ...CallOption) error { + cs, err := acbw.NewStream(ctx, unaryStreamDesc, method, opts...) + if err != nil { + return err } + if err := cs.SendMsg(args); err != nil { + return err + } + return cs.RecvMsg(reply) } -func (acbw *acBalancerWrapper) Connect() { - acbw.mu.Lock() - defer acbw.mu.Unlock() - acbw.ac.connect() +type refCountedProducer struct { + producer balancer.Producer + refs int // number of current refs to the producer + close func() // underlying producer's close function } -func (acbw *acBalancerWrapper) getAddrConn() *addrConn { +func (acbw *acBalancerWrapper) GetOrBuildProducer(pb balancer.ProducerBuilder) (balancer.Producer, func()) { acbw.mu.Lock() defer acbw.mu.Unlock() - return acbw.ac + + // Look up existing producer from this builder. + pData := acbw.producers[pb] + if pData == nil { + // Not found; create a new one and add it to the producers map. + p, close := pb.Build(acbw) + pData = &refCountedProducer{producer: p, close: close} + acbw.producers[pb] = pData + } + // Account for this new reference. + pData.refs++ + + // Return a cleanup function wrapped in a OnceFunc to remove this reference + // and delete the refCountedProducer from the map if the total reference + // count goes to zero. + unref := func() { + acbw.mu.Lock() + pData.refs-- + if pData.refs == 0 { + defer pData.close() // Run outside the acbw mutex + delete(acbw.producers, pb) + } + acbw.mu.Unlock() + } + return pData.producer, grpcsync.OnceFunc(unref) } diff --git a/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go b/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go index ed75290c..ec2c2fa1 100644 --- a/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go +++ b/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go @@ -18,14 +18,13 @@ // Code generated by protoc-gen-go. DO NOT EDIT. // versions: -// protoc-gen-go v1.25.0 -// protoc v3.14.0 +// protoc-gen-go v1.30.0 +// protoc v4.22.0 // source: grpc/binlog/v1/binarylog.proto package grpc_binarylog_v1 import ( - proto "github.com/golang/protobuf/proto" protoreflect "google.golang.org/protobuf/reflect/protoreflect" protoimpl "google.golang.org/protobuf/runtime/protoimpl" durationpb "google.golang.org/protobuf/types/known/durationpb" @@ -41,10 +40,6 @@ const ( _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) ) -// This is a compile-time assertion that a sufficiently up-to-date version -// of the legacy proto package is being used. -const _ = proto.ProtoPackageIsVersion4 - // Enumerates the type of event // Note the terminology is different from the RPC semantics // definition, but the same meaning is expressed here. @@ -261,6 +256,7 @@ type GrpcLogEntry struct { // according to the type of the log entry. // // Types that are assignable to Payload: + // // *GrpcLogEntry_ClientHeader // *GrpcLogEntry_ServerHeader // *GrpcLogEntry_Message @@ -694,12 +690,12 @@ func (x *Message) GetData() []byte { // Header keys added by gRPC are omitted. To be more specific, // implementations will not log the following entries, and this is // not to be treated as a truncation: -// - entries handled by grpc that are not user visible, such as those -// that begin with 'grpc-' (with exception of grpc-trace-bin) -// or keys like 'lb-token' -// - transport specific entries, including but not limited to: -// ':path', ':authority', 'content-encoding', 'user-agent', 'te', etc -// - entries added for call credentials +// - entries handled by grpc that are not user visible, such as those +// that begin with 'grpc-' (with exception of grpc-trace-bin) +// or keys like 'lb-token' +// - transport specific entries, including but not limited to: +// ':path', ':authority', 'content-encoding', 'user-agent', 'te', etc +// - entries added for call credentials // // Implementations must always log grpc-trace-bin if it is present. // Practically speaking it will only be visible on server side because diff --git a/vendor/google.golang.org/grpc/call.go b/vendor/google.golang.org/grpc/call.go index 9e20e4d3..e6a1dc5d 100644 --- a/vendor/google.golang.org/grpc/call.go +++ b/vendor/google.golang.org/grpc/call.go @@ -27,6 +27,11 @@ import ( // // All errors returned by Invoke are compatible with the status package. func (cc *ClientConn) Invoke(ctx context.Context, method string, args, reply interface{}, opts ...CallOption) error { + if err := cc.idlenessMgr.onCallBegin(); err != nil { + return err + } + defer cc.idlenessMgr.onCallEnd() + // allow interceptor to see all applicable call options, which means those // configured as defaults from dial option as well as per-call options opts = combine(cc.dopts.callOptions, opts) diff --git a/vendor/google.golang.org/grpc/channelz/channelz.go b/vendor/google.golang.org/grpc/channelz/channelz.go new file mode 100644 index 00000000..32b7fa57 --- /dev/null +++ b/vendor/google.golang.org/grpc/channelz/channelz.go @@ -0,0 +1,36 @@ +/* + * + * Copyright 2020 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package channelz exports internals of the channelz implementation as required +// by other gRPC packages. +// +// The implementation of the channelz spec as defined in +// https://github.com/grpc/proposal/blob/master/A14-channelz.md, is provided by +// the `internal/channelz` package. +// +// # Experimental +// +// Notice: All APIs in this package are experimental and may be removed in a +// later release. +package channelz + +import "google.golang.org/grpc/internal/channelz" + +// Identifier is an opaque identifier which uniquely identifies an entity in the +// channelz database. +type Identifier = channelz.Identifier diff --git a/vendor/google.golang.org/grpc/clientconn.go b/vendor/google.golang.org/grpc/clientconn.go index 24109264..bfd7555a 100644 --- a/vendor/google.golang.org/grpc/clientconn.go +++ b/vendor/google.golang.org/grpc/clientconn.go @@ -23,7 +23,7 @@ import ( "errors" "fmt" "math" - "reflect" + "net/url" "strings" "sync" "sync/atomic" @@ -37,7 +37,7 @@ import ( "google.golang.org/grpc/internal/backoff" "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/internal/grpcsync" - "google.golang.org/grpc/internal/grpcutil" + "google.golang.org/grpc/internal/pretty" iresolver "google.golang.org/grpc/internal/resolver" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/keepalive" @@ -69,6 +69,9 @@ var ( errConnDrain = errors.New("grpc: the connection is drained") // errConnClosing indicates that the connection is closing. errConnClosing = errors.New("grpc: the connection is closing") + // errConnIdling indicates the the connection is being closed as the channel + // is moving to an idle mode due to inactivity. + errConnIdling = errors.New("grpc: the connection is closing due to channel idleness") // invalidDefaultServiceConfigErrPrefix is used to prefix the json parsing error for the default // service config. invalidDefaultServiceConfigErrPrefix = "grpc: the provided default service config is invalid" @@ -79,17 +82,17 @@ var ( // errNoTransportSecurity indicates that there is no transport security // being set for ClientConn. Users should either set one or explicitly // call WithInsecure DialOption to disable security. - errNoTransportSecurity = errors.New("grpc: no transport security set (use grpc.WithInsecure() explicitly or set credentials)") + errNoTransportSecurity = errors.New("grpc: no transport security set (use grpc.WithTransportCredentials(insecure.NewCredentials()) explicitly or set credentials)") // errTransportCredsAndBundle indicates that creds bundle is used together // with other individual Transport Credentials. errTransportCredsAndBundle = errors.New("grpc: credentials.Bundle may not be used with individual TransportCredentials") - // errTransportCredentialsMissing indicates that users want to transmit security - // information (e.g., OAuth2 token) which requires secure connection on an insecure - // connection. + // errNoTransportCredsInBundle indicated that the configured creds bundle + // returned a transport credentials which was nil. + errNoTransportCredsInBundle = errors.New("grpc: credentials.Bundle must return non-nil transport credentials") + // errTransportCredentialsMissing indicates that users want to transmit + // security information (e.g., OAuth2 token) which requires secure + // connection on an insecure connection. errTransportCredentialsMissing = errors.New("grpc: the credentials require transport level security (use grpc.WithTransportCredentials() to set)") - // errCredentialsConflict indicates that grpc.WithTransportCredentials() - // and grpc.WithInsecure() are both called for a connection. - errCredentialsConflict = errors.New("grpc: transport credentials are set for an insecure connection (grpc.WithTransportCredentials() and grpc.WithInsecure() are both called)") ) const ( @@ -134,17 +137,43 @@ func (dcs *defaultConfigSelector) SelectConfig(rpcInfo iresolver.RPCInfo) (*ires // e.g. to use dns resolver, a "dns:///" prefix should be applied to the target. func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *ClientConn, err error) { cc := &ClientConn{ - target: target, - csMgr: &connectivityStateManager{}, - conns: make(map[*addrConn]struct{}), - dopts: defaultDialOptions(), - blockingpicker: newPickerWrapper(), - czData: new(channelzData), - firstResolveEvent: grpcsync.NewEvent(), - } + target: target, + csMgr: &connectivityStateManager{}, + conns: make(map[*addrConn]struct{}), + dopts: defaultDialOptions(), + czData: new(channelzData), + } + + // We start the channel off in idle mode, but kick it out of idle at the end + // of this method, instead of waiting for the first RPC. Other gRPC + // implementations do wait for the first RPC to kick the channel out of + // idle. But doing so would be a major behavior change for our users who are + // used to seeing the channel active after Dial. + // + // Taking this approach of kicking it out of idle at the end of this method + // allows us to share the code between channel creation and exiting idle + // mode. This will also make it easy for us to switch to starting the + // channel off in idle, if at all we ever get to do that. + cc.idlenessState = ccIdlenessStateIdle + cc.retryThrottler.Store((*retryThrottler)(nil)) cc.safeConfigSelector.UpdateConfigSelector(&defaultConfigSelector{nil}) cc.ctx, cc.cancel = context.WithCancel(context.Background()) + cc.exitIdleCond = sync.NewCond(&cc.mu) + + disableGlobalOpts := false + for _, opt := range opts { + if _, ok := opt.(*disableGlobalDialOptions); ok { + disableGlobalOpts = true + break + } + } + + if !disableGlobalOpts { + for _, opt := range globalDialOptions { + opt.apply(&cc.dopts) + } + } for _, opt := range opts { opt.apply(&cc.dopts) @@ -159,40 +188,11 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * } }() - if channelz.IsOn() { - if cc.dopts.channelzParentID != 0 { - cc.channelzID = channelz.RegisterChannel(&channelzChannel{cc}, cc.dopts.channelzParentID, target) - channelz.AddTraceEvent(logger, cc.channelzID, 0, &channelz.TraceEventDesc{ - Desc: "Channel Created", - Severity: channelz.CtInfo, - Parent: &channelz.TraceEventDesc{ - Desc: fmt.Sprintf("Nested Channel(id:%d) created", cc.channelzID), - Severity: channelz.CtInfo, - }, - }) - } else { - cc.channelzID = channelz.RegisterChannel(&channelzChannel{cc}, 0, target) - channelz.Info(logger, cc.channelzID, "Channel Created") - } - cc.csMgr.channelzID = cc.channelzID - } + // Register ClientConn with channelz. + cc.channelzRegistration(target) - if !cc.dopts.insecure { - if cc.dopts.copts.TransportCredentials == nil && cc.dopts.copts.CredsBundle == nil { - return nil, errNoTransportSecurity - } - if cc.dopts.copts.TransportCredentials != nil && cc.dopts.copts.CredsBundle != nil { - return nil, errTransportCredsAndBundle - } - } else { - if cc.dopts.copts.TransportCredentials != nil || cc.dopts.copts.CredsBundle != nil { - return nil, errCredentialsConflict - } - for _, cd := range cc.dopts.copts.PerRPCCredentials { - if cd.RequireTransportSecurity() { - return nil, errTransportCredentialsMissing - } - } + if err := cc.validateTransportCredentials(); err != nil { + return nil, err } if cc.dopts.defaultServiceConfigRawJSON != nil { @@ -230,58 +230,19 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * } }() - scSet := false - if cc.dopts.scChan != nil { - // Try to get an initial service config. - select { - case sc, ok := <-cc.dopts.scChan: - if ok { - cc.sc = &sc - cc.safeConfigSelector.UpdateConfigSelector(&defaultConfigSelector{&sc}) - scSet = true - } - default: - } - } if cc.dopts.bs == nil { cc.dopts.bs = backoff.DefaultExponential } // Determine the resolver to use. - cc.parsedTarget = grpcutil.ParseTarget(cc.target, cc.dopts.copts.Dialer != nil) - channelz.Infof(logger, cc.channelzID, "parsed scheme: %q", cc.parsedTarget.Scheme) - resolverBuilder := cc.getResolver(cc.parsedTarget.Scheme) - if resolverBuilder == nil { - // If resolver builder is still nil, the parsed target's scheme is - // not registered. Fallback to default resolver and set Endpoint to - // the original target. - channelz.Infof(logger, cc.channelzID, "scheme %q not registered, fallback to default scheme", cc.parsedTarget.Scheme) - cc.parsedTarget = resolver.Target{ - Scheme: resolver.GetDefaultScheme(), - Endpoint: target, - } - resolverBuilder = cc.getResolver(cc.parsedTarget.Scheme) - if resolverBuilder == nil { - return nil, fmt.Errorf("could not get resolver for default scheme: %q", cc.parsedTarget.Scheme) - } + if err := cc.parseTargetAndFindResolver(); err != nil { + return nil, err } - - creds := cc.dopts.copts.TransportCredentials - if creds != nil && creds.Info().ServerName != "" { - cc.authority = creds.Info().ServerName - } else if cc.dopts.insecure && cc.dopts.authority != "" { - cc.authority = cc.dopts.authority - } else if strings.HasPrefix(cc.target, "unix:") || strings.HasPrefix(cc.target, "unix-abstract:") { - cc.authority = "localhost" - } else if strings.HasPrefix(cc.parsedTarget.Endpoint, ":") { - cc.authority = "localhost" + cc.parsedTarget.Endpoint - } else { - // Use endpoint from "scheme://authority/endpoint" as the default - // authority for ClientConn. - cc.authority = cc.parsedTarget.Endpoint + if err = cc.determineAuthority(); err != nil { + return nil, err } - if cc.dopts.scChan != nil && !scSet { + if cc.dopts.scChan != nil { // Blocking wait for the initial service config. select { case sc, ok := <-cc.dopts.scChan: @@ -297,55 +258,224 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * go cc.scWatcher() } + // This creates the name resolver, load balancer, blocking picker etc. + if err := cc.exitIdleMode(); err != nil { + return nil, err + } + + // Configure idleness support with configured idle timeout or default idle + // timeout duration. Idleness can be explicitly disabled by the user, by + // setting the dial option to 0. + cc.idlenessMgr = newIdlenessManager(cc, cc.dopts.idleTimeout) + + // Return early for non-blocking dials. + if !cc.dopts.block { + return cc, nil + } + + // A blocking dial blocks until the clientConn is ready. + for { + s := cc.GetState() + if s == connectivity.Idle { + cc.Connect() + } + if s == connectivity.Ready { + return cc, nil + } else if cc.dopts.copts.FailOnNonTempDialError && s == connectivity.TransientFailure { + if err = cc.connectionError(); err != nil { + terr, ok := err.(interface { + Temporary() bool + }) + if ok && !terr.Temporary() { + return nil, err + } + } + } + if !cc.WaitForStateChange(ctx, s) { + // ctx got timeout or canceled. + if err = cc.connectionError(); err != nil && cc.dopts.returnLastError { + return nil, err + } + return nil, ctx.Err() + } + } +} + +// addTraceEvent is a helper method to add a trace event on the channel. If the +// channel is a nested one, the same event is also added on the parent channel. +func (cc *ClientConn) addTraceEvent(msg string) { + ted := &channelz.TraceEventDesc{ + Desc: fmt.Sprintf("Channel %s", msg), + Severity: channelz.CtInfo, + } + if cc.dopts.channelzParentID != nil { + ted.Parent = &channelz.TraceEventDesc{ + Desc: fmt.Sprintf("Nested channel(id:%d) %s", cc.channelzID.Int(), msg), + Severity: channelz.CtInfo, + } + } + channelz.AddTraceEvent(logger, cc.channelzID, 0, ted) +} + +// exitIdleMode moves the channel out of idle mode by recreating the name +// resolver and load balancer. +func (cc *ClientConn) exitIdleMode() error { + cc.mu.Lock() + if cc.conns == nil { + cc.mu.Unlock() + return errConnClosing + } + if cc.idlenessState != ccIdlenessStateIdle { + cc.mu.Unlock() + logger.Info("ClientConn asked to exit idle mode when not in idle mode") + return nil + } + + defer func() { + // When Close() and exitIdleMode() race against each other, one of the + // following two can happen: + // - Close() wins the race and runs first. exitIdleMode() runs after, and + // sees that the ClientConn is already closed and hence returns early. + // - exitIdleMode() wins the race and runs first and recreates the balancer + // and releases the lock before recreating the resolver. If Close() runs + // in this window, it will wait for exitIdleMode to complete. + // + // We achieve this synchronization using the below condition variable. + cc.mu.Lock() + cc.idlenessState = ccIdlenessStateActive + cc.exitIdleCond.Signal() + cc.mu.Unlock() + }() + + cc.idlenessState = ccIdlenessStateExitingIdle + exitedIdle := false + if cc.blockingpicker == nil { + cc.blockingpicker = newPickerWrapper() + } else { + cc.blockingpicker.exitIdleMode() + exitedIdle = true + } + var credsClone credentials.TransportCredentials if creds := cc.dopts.copts.TransportCredentials; creds != nil { credsClone = creds.Clone() } - cc.balancerBuildOpts = balancer.BuildOptions{ - DialCreds: credsClone, - CredsBundle: cc.dopts.copts.CredsBundle, - Dialer: cc.dopts.copts.Dialer, - CustomUserAgent: cc.dopts.copts.UserAgent, - ChannelzParentID: cc.channelzID, - Target: cc.parsedTarget, + if cc.balancerWrapper == nil { + cc.balancerWrapper = newCCBalancerWrapper(cc, balancer.BuildOptions{ + DialCreds: credsClone, + CredsBundle: cc.dopts.copts.CredsBundle, + Dialer: cc.dopts.copts.Dialer, + Authority: cc.authority, + CustomUserAgent: cc.dopts.copts.UserAgent, + ChannelzParentID: cc.channelzID, + Target: cc.parsedTarget, + }) + } else { + cc.balancerWrapper.exitIdleMode() + } + cc.firstResolveEvent = grpcsync.NewEvent() + cc.mu.Unlock() + + // This needs to be called without cc.mu because this builds a new resolver + // which might update state or report error inline which needs to be handled + // by cc.updateResolverState() which also grabs cc.mu. + if err := cc.initResolverWrapper(credsClone); err != nil { + return err } - // Build the resolver. - rWrapper, err := newCCResolverWrapper(cc, resolverBuilder) - if err != nil { - return nil, fmt.Errorf("failed to build resolver: %v", err) + if exitedIdle { + cc.addTraceEvent("exiting idle mode") } + return nil +} + +// enterIdleMode puts the channel in idle mode, and as part of it shuts down the +// name resolver, load balancer and any subchannels. +func (cc *ClientConn) enterIdleMode() error { cc.mu.Lock() - cc.resolverWrapper = rWrapper + if cc.conns == nil { + cc.mu.Unlock() + return ErrClientConnClosing + } + if cc.idlenessState != ccIdlenessStateActive { + logger.Error("ClientConn asked to enter idle mode when not active") + return nil + } + + // cc.conns == nil is a proxy for the ClientConn being closed. So, instead + // of setting it to nil here, we recreate the map. This also means that we + // don't have to do this when exiting idle mode. + conns := cc.conns + cc.conns = make(map[*addrConn]struct{}) + + // TODO: Currently, we close the resolver wrapper upon entering idle mode + // and create a new one upon exiting idle mode. This means that the + // `cc.resolverWrapper` field would be overwritten everytime we exit idle + // mode. While this means that we need to hold `cc.mu` when accessing + // `cc.resolverWrapper`, it makes the code simpler in the wrapper. We should + // try to do the same for the balancer and picker wrappers too. + cc.resolverWrapper.close() + cc.blockingpicker.enterIdleMode() + cc.balancerWrapper.enterIdleMode() + cc.csMgr.updateState(connectivity.Idle) + cc.idlenessState = ccIdlenessStateIdle cc.mu.Unlock() - // A blocking dial blocks until the clientConn is ready. - if cc.dopts.block { - for { - s := cc.GetState() - if s == connectivity.Ready { - break - } else if cc.dopts.copts.FailOnNonTempDialError && s == connectivity.TransientFailure { - if err = cc.connectionError(); err != nil { - terr, ok := err.(interface { - Temporary() bool - }) - if ok && !terr.Temporary() { - return nil, err - } - } - } - if !cc.WaitForStateChange(ctx, s) { - // ctx got timeout or canceled. - if err = cc.connectionError(); err != nil && cc.dopts.returnLastError { - return nil, err - } - return nil, ctx.Err() + go func() { + cc.addTraceEvent("entering idle mode") + for ac := range conns { + ac.tearDown(errConnIdling) + } + }() + return nil +} + +// validateTransportCredentials performs a series of checks on the configured +// transport credentials. It returns a non-nil error if any of these conditions +// are met: +// - no transport creds and no creds bundle is configured +// - both transport creds and creds bundle are configured +// - creds bundle is configured, but it lacks a transport credentials +// - insecure transport creds configured alongside call creds that require +// transport level security +// +// If none of the above conditions are met, the configured credentials are +// deemed valid and a nil error is returned. +func (cc *ClientConn) validateTransportCredentials() error { + if cc.dopts.copts.TransportCredentials == nil && cc.dopts.copts.CredsBundle == nil { + return errNoTransportSecurity + } + if cc.dopts.copts.TransportCredentials != nil && cc.dopts.copts.CredsBundle != nil { + return errTransportCredsAndBundle + } + if cc.dopts.copts.CredsBundle != nil && cc.dopts.copts.CredsBundle.TransportCredentials() == nil { + return errNoTransportCredsInBundle + } + transportCreds := cc.dopts.copts.TransportCredentials + if transportCreds == nil { + transportCreds = cc.dopts.copts.CredsBundle.TransportCredentials() + } + if transportCreds.Info().SecurityProtocol == "insecure" { + for _, cd := range cc.dopts.copts.PerRPCCredentials { + if cd.RequireTransportSecurity() { + return errTransportCredentialsMissing } } } + return nil +} - return cc, nil +// channelzRegistration registers the newly created ClientConn with channelz and +// stores the returned identifier in `cc.channelzID` and `cc.csMgr.channelzID`. +// A channelz trace event is emitted for ClientConn creation. If the newly +// created ClientConn is a nested one, i.e a valid parent ClientConn ID is +// specified via a dial option, the trace event is also added to the parent. +// +// Doesn't grab cc.mu as this method is expected to be called only at Dial time. +func (cc *ClientConn) channelzRegistration(target string) { + cc.channelzID = channelz.RegisterChannel(&channelzChannel{cc}, cc.dopts.channelzParentID, target) + cc.addTraceEvent("created") + cc.csMgr.channelzID = cc.channelzID } // chainUnaryClientInterceptors chains all unary client interceptors into one. @@ -416,7 +546,7 @@ type connectivityStateManager struct { mu sync.Mutex state connectivity.State notifyChan chan struct{} - channelzID int64 + channelzID *channelz.Identifier } // updateState updates the connectivity.State of ClientConn. @@ -482,43 +612,67 @@ var _ ClientConnInterface = (*ClientConn)(nil) // handshakes. It also handles errors on established connections by // re-resolving the name and reconnecting. type ClientConn struct { - ctx context.Context - cancel context.CancelFunc - - target string - parsedTarget resolver.Target - authority string - dopts dialOptions - csMgr *connectivityStateManager - - balancerBuildOpts balancer.BuildOptions - blockingpicker *pickerWrapper - + ctx context.Context // Initialized using the background context at dial time. + cancel context.CancelFunc // Cancelled on close. + + // The following are initialized at dial time, and are read-only after that. + target string // User's dial target. + parsedTarget resolver.Target // See parseTargetAndFindResolver(). + authority string // See determineAuthority(). + dopts dialOptions // Default and user specified dial options. + channelzID *channelz.Identifier // Channelz identifier for the channel. + resolverBuilder resolver.Builder // See parseTargetAndFindResolver(). + balancerWrapper *ccBalancerWrapper // Uses gracefulswitch.balancer underneath. + idlenessMgr idlenessManager + + // The following provide their own synchronization, and therefore don't + // require cc.mu to be held to access them. + csMgr *connectivityStateManager + blockingpicker *pickerWrapper safeConfigSelector iresolver.SafeConfigSelector + czData *channelzData + retryThrottler atomic.Value // Updated from service config. - mu sync.RWMutex - resolverWrapper *ccResolverWrapper - sc *ServiceConfig - conns map[*addrConn]struct{} - // Keepalive parameter can be updated if a GoAway is received. - mkp keepalive.ClientParameters - curBalancerName string - balancerWrapper *ccBalancerWrapper - retryThrottler atomic.Value - + // firstResolveEvent is used to track whether the name resolver sent us at + // least one update. RPCs block on this event. firstResolveEvent *grpcsync.Event - channelzID int64 // channelz unique identification number - czData *channelzData + // mu protects the following fields. + // TODO: split mu so the same mutex isn't used for everything. + mu sync.RWMutex + resolverWrapper *ccResolverWrapper // Initialized in Dial; cleared in Close. + sc *ServiceConfig // Latest service config received from the resolver. + conns map[*addrConn]struct{} // Set to nil on close. + mkp keepalive.ClientParameters // May be updated upon receipt of a GoAway. + idlenessState ccIdlenessState // Tracks idleness state of the channel. + exitIdleCond *sync.Cond // Signalled when channel exits idle. lceMu sync.Mutex // protects lastConnectionError lastConnectionError error } +// ccIdlenessState tracks the idleness state of the channel. +// +// Channels start off in `active` and move to `idle` after a period of +// inactivity. When moving back to `active` upon an incoming RPC, they +// transition through `exiting_idle`. This state is useful for synchronization +// with Close(). +// +// This state tracking is mostly for self-protection. The idlenessManager is +// expected to keep track of the state as well, and is expected not to call into +// the ClientConn unnecessarily. +type ccIdlenessState int8 + +const ( + ccIdlenessStateActive ccIdlenessState = iota + ccIdlenessStateIdle + ccIdlenessStateExitingIdle +) + // WaitForStateChange waits until the connectivity.State of ClientConn changes from sourceState or // ctx expires. A true value is returned in former case and false in latter. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -537,14 +691,29 @@ func (cc *ClientConn) WaitForStateChange(ctx context.Context, sourceState connec // GetState returns the connectivity.State of ClientConn. // -// Experimental +// # Experimental // -// Notice: This API is EXPERIMENTAL and may be changed or removed in a -// later release. +// Notice: This API is EXPERIMENTAL and may be changed or removed in a later +// release. func (cc *ClientConn) GetState() connectivity.State { return cc.csMgr.getState() } +// Connect causes all subchannels in the ClientConn to attempt to connect if +// the channel is idle. Does not wait for the connection attempts to begin +// before returning. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a later +// release. +func (cc *ClientConn) Connect() { + cc.exitIdleMode() + // If the ClientConn was not in idle mode, we need to call ExitIdle on the + // LB policy so that connections can be created. + cc.balancerWrapper.exitIdleMode() +} + func (cc *ClientConn) scWatcher() { for { select { @@ -622,9 +791,7 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error { // with the new addresses. cc.maybeApplyDefaultServiceConfig(nil) - if cc.balancerWrapper != nil { - cc.balancerWrapper.resolverError(err) - } + cc.balancerWrapper.resolverError(err) // No addresses are valid with err set; return early. cc.mu.Unlock() @@ -632,7 +799,10 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error { } var ret error - if cc.dopts.disableServiceConfig || s.ServiceConfig == nil { + if cc.dopts.disableServiceConfig { + channelz.Infof(logger, cc.channelzID, "ignoring service config from resolver (%v) and applying the default because service config is disabled", s.ServiceConfig) + cc.maybeApplyDefaultServiceConfig(s.Addresses) + } else if s.ServiceConfig == nil { cc.maybeApplyDefaultServiceConfig(s.Addresses) // TODO: do we need to apply a failing LB policy if there is no // default, per the error handling design? @@ -649,16 +819,10 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error { cc.applyServiceConfigAndBalancer(sc, configSelector, s.Addresses) } else { ret = balancer.ErrBadResolverState - if cc.balancerWrapper == nil { - var err error - if s.ServiceConfig.Err != nil { - err = status.Errorf(codes.Unavailable, "error parsing service config: %v", s.ServiceConfig.Err) - } else { - err = status.Errorf(codes.Unavailable, "illegal service config type: %T", s.ServiceConfig.Config) - } - cc.safeConfigSelector.UpdateConfigSelector(&defaultConfigSelector{cc.sc}) - cc.blockingpicker.updatePicker(base.NewErrPicker(err)) - cc.csMgr.updateState(connectivity.TransientFailure) + if cc.sc == nil { + // Apply the failing LB only if we haven't received valid service config + // from the name resolver in the past. + cc.applyFailingLB(s.ServiceConfig) cc.mu.Unlock() return ret } @@ -666,24 +830,12 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error { } var balCfg serviceconfig.LoadBalancingConfig - if cc.dopts.balancerBuilder == nil && cc.sc != nil && cc.sc.lbConfig != nil { + if cc.sc != nil && cc.sc.lbConfig != nil { balCfg = cc.sc.lbConfig.cfg } - - cbn := cc.curBalancerName bw := cc.balancerWrapper cc.mu.Unlock() - if cbn != grpclbName { - // Filter any grpclb addresses since we don't have the grpclb balancer. - for i := 0; i < len(s.Addresses); { - if s.Addresses[i].Type == resolver.GRPCLB { - copy(s.Addresses[i:], s.Addresses[i+1:]) - s.Addresses = s.Addresses[:len(s.Addresses)-1] - continue - } - i++ - } - } + uccsErr := bw.updateClientConnState(&balancer.ClientConnState{ResolverState: s, BalancerConfig: balCfg}) if ret == nil { ret = uccsErr // prefer ErrBadResolver state since any other error is @@ -692,51 +844,42 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error { return ret } -// switchBalancer starts the switching from current balancer to the balancer -// with the given name. -// -// It will NOT send the current address list to the new balancer. If needed, -// caller of this function should send address list to the new balancer after -// this function returns. +// applyFailingLB is akin to configuring an LB policy on the channel which +// always fails RPCs. Here, an actual LB policy is not configured, but an always +// erroring picker is configured, which returns errors with information about +// what was invalid in the received service config. A config selector with no +// service config is configured, and the connectivity state of the channel is +// set to TransientFailure. // // Caller must hold cc.mu. -func (cc *ClientConn) switchBalancer(name string) { - if strings.EqualFold(cc.curBalancerName, name) { - return - } - - channelz.Infof(logger, cc.channelzID, "ClientConn switching balancer to %q", name) - if cc.dopts.balancerBuilder != nil { - channelz.Info(logger, cc.channelzID, "ignoring balancer switching: Balancer DialOption used instead") - return - } - if cc.balancerWrapper != nil { - cc.balancerWrapper.close() - } - - builder := balancer.Get(name) - if builder == nil { - channelz.Warningf(logger, cc.channelzID, "Channel switches to new LB policy %q due to fallback from invalid balancer name", PickFirstBalancerName) - channelz.Infof(logger, cc.channelzID, "failed to get balancer builder for: %v, using pick_first instead", name) - builder = newPickfirstBuilder() +func (cc *ClientConn) applyFailingLB(sc *serviceconfig.ParseResult) { + var err error + if sc.Err != nil { + err = status.Errorf(codes.Unavailable, "error parsing service config: %v", sc.Err) } else { - channelz.Infof(logger, cc.channelzID, "Channel switches to new LB policy %q", name) + err = status.Errorf(codes.Unavailable, "illegal service config type: %T", sc.Config) } - - cc.curBalancerName = builder.Name() - cc.balancerWrapper = newCCBalancerWrapper(cc, builder, cc.balancerBuildOpts) + cc.safeConfigSelector.UpdateConfigSelector(&defaultConfigSelector{nil}) + cc.blockingpicker.updatePicker(base.NewErrPicker(err)) + cc.csMgr.updateState(connectivity.TransientFailure) } func (cc *ClientConn) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State, err error) { - cc.mu.Lock() - if cc.conns == nil { - cc.mu.Unlock() - return - } - // TODO(bar switching) send updates to all balancer wrappers when balancer - // gracefully switching is supported. - cc.balancerWrapper.handleSubConnStateChange(sc, s, err) - cc.mu.Unlock() + cc.balancerWrapper.updateSubConnState(sc, s, err) +} + +// Makes a copy of the input addresses slice and clears out the balancer +// attributes field. Addresses are passed during subconn creation and address +// update operations. In both cases, we will clear the balancer attributes by +// calling this function, and therefore we will be able to use the Equal method +// provided by the resolver.Address type for comparison. +func copyAddressesWithoutBalancerAttributes(in []resolver.Address) []resolver.Address { + out := make([]resolver.Address, len(in)) + for i := range in { + out[i] = in[i] + out[i].BalancerAttributes = nil + } + return out } // newAddrConn creates an addrConn for addrs and adds it to cc.conns. @@ -746,32 +889,36 @@ func (cc *ClientConn) newAddrConn(addrs []resolver.Address, opts balancer.NewSub ac := &addrConn{ state: connectivity.Idle, cc: cc, - addrs: addrs, + addrs: copyAddressesWithoutBalancerAttributes(addrs), scopts: opts, dopts: cc.dopts, czData: new(channelzData), resetBackoff: make(chan struct{}), + stateChan: make(chan struct{}), } ac.ctx, ac.cancel = context.WithCancel(cc.ctx) // Track ac in cc. This needs to be done before any getTransport(...) is called. cc.mu.Lock() + defer cc.mu.Unlock() if cc.conns == nil { - cc.mu.Unlock() return nil, ErrClientConnClosing } - if channelz.IsOn() { - ac.channelzID = channelz.RegisterSubChannel(ac, cc.channelzID, "") - channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{ - Desc: "Subchannel Created", - Severity: channelz.CtInfo, - Parent: &channelz.TraceEventDesc{ - Desc: fmt.Sprintf("Subchannel(id:%d) created", ac.channelzID), - Severity: channelz.CtInfo, - }, - }) + + var err error + ac.channelzID, err = channelz.RegisterSubChannel(ac, cc.channelzID, "") + if err != nil { + return nil, err } + channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{ + Desc: "Subchannel created", + Severity: channelz.CtInfo, + Parent: &channelz.TraceEventDesc{ + Desc: fmt.Sprintf("Subchannel(id:%d) created", ac.channelzID.Int()), + Severity: channelz.CtInfo, + }, + }) + cc.conns[ac] = struct{}{} - cc.mu.Unlock() return ac, nil } @@ -801,7 +948,7 @@ func (cc *ClientConn) channelzMetric() *channelz.ChannelInternalMetric { // Target returns the target string of the ClientConn. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -828,67 +975,114 @@ func (cc *ClientConn) incrCallsFailed() { func (ac *addrConn) connect() error { ac.mu.Lock() if ac.state == connectivity.Shutdown { + if logger.V(2) { + logger.Infof("connect called on shutdown addrConn; ignoring.") + } ac.mu.Unlock() return errConnClosing } if ac.state != connectivity.Idle { + if logger.V(2) { + logger.Infof("connect called on addrConn in non-idle state (%v); ignoring.", ac.state) + } ac.mu.Unlock() return nil } - // Update connectivity state within the lock to prevent subsequent or - // concurrent calls from resetting the transport more than once. - ac.updateConnectivityState(connectivity.Connecting, nil) ac.mu.Unlock() - // Start a goroutine connecting to the server asynchronously. - go ac.resetTransport() + ac.resetTransport() return nil } -// tryUpdateAddrs tries to update ac.addrs with the new addresses list. -// -// If ac is Connecting, it returns false. The caller should tear down the ac and -// create a new one. Note that the backoff will be reset when this happens. -// -// If ac is TransientFailure, it updates ac.addrs and returns true. The updated -// addresses will be picked up by retry in the next iteration after backoff. -// -// If ac is Shutdown or Idle, it updates ac.addrs and returns true. -// -// If ac is Ready, it checks whether current connected address of ac is in the -// new addrs list. -// - If true, it updates ac.addrs and returns true. The ac will keep using -// the existing connection. -// - If false, it does nothing and returns false. -func (ac *addrConn) tryUpdateAddrs(addrs []resolver.Address) bool { +func equalAddresses(a, b []resolver.Address) bool { + if len(a) != len(b) { + return false + } + for i, v := range a { + if !v.Equal(b[i]) { + return false + } + } + return true +} + +// updateAddrs updates ac.addrs with the new addresses list and handles active +// connections or connection attempts. +func (ac *addrConn) updateAddrs(addrs []resolver.Address) { ac.mu.Lock() - defer ac.mu.Unlock() - channelz.Infof(logger, ac.channelzID, "addrConn: tryUpdateAddrs curAddr: %v, addrs: %v", ac.curAddr, addrs) + channelz.Infof(logger, ac.channelzID, "addrConn: updateAddrs curAddr: %v, addrs: %v", pretty.ToJSON(ac.curAddr), pretty.ToJSON(addrs)) + + addrs = copyAddressesWithoutBalancerAttributes(addrs) + if equalAddresses(ac.addrs, addrs) { + ac.mu.Unlock() + return + } + + ac.addrs = addrs + if ac.state == connectivity.Shutdown || ac.state == connectivity.TransientFailure || ac.state == connectivity.Idle { - ac.addrs = addrs - return true + // We were not connecting, so do nothing but update the addresses. + ac.mu.Unlock() + return } - if ac.state == connectivity.Connecting { - return false + if ac.state == connectivity.Ready { + // Try to find the connected address. + for _, a := range addrs { + a.ServerName = ac.cc.getServerName(a) + if a.Equal(ac.curAddr) { + // We are connected to a valid address, so do nothing but + // update the addresses. + ac.mu.Unlock() + return + } + } } - // ac.state is Ready, try to find the connected address. - var curAddrFound bool - for _, a := range addrs { - if reflect.DeepEqual(ac.curAddr, a) { - curAddrFound = true - break - } + // We are either connected to the wrong address or currently connecting. + // Stop the current iteration and restart. + + ac.cancel() + ac.ctx, ac.cancel = context.WithCancel(ac.cc.ctx) + + // We have to defer here because GracefulClose => Close => onClose, which + // requires locking ac.mu. + if ac.transport != nil { + defer ac.transport.GracefulClose() + ac.transport = nil } - channelz.Infof(logger, ac.channelzID, "addrConn: tryUpdateAddrs curAddrFound: %v", curAddrFound) - if curAddrFound { - ac.addrs = addrs + + if len(addrs) == 0 { + ac.updateConnectivityState(connectivity.Idle, nil) } - return curAddrFound + ac.mu.Unlock() + + // Since we were connecting/connected, we should start a new connection + // attempt. + go ac.resetTransport() +} + +// getServerName determines the serverName to be used in the connection +// handshake. The default value for the serverName is the authority on the +// ClientConn, which either comes from the user's dial target or through an +// authority override specified using the WithAuthority dial option. Name +// resolvers can specify a per-address override for the serverName through the +// resolver.Address.ServerName field which is used only if the WithAuthority +// dial option was not used. The rationale is that per-address authority +// overrides specified by the name resolver can represent a security risk, while +// an override specified by the user is more dependable since they probably know +// what they are doing. +func (cc *ClientConn) getServerName(addr resolver.Address) string { + if cc.dopts.authority != "" { + return cc.dopts.authority + } + if addr.ServerName != "" { + return addr.ServerName + } + return cc.authority } func getMethodConfig(sc *ServiceConfig, method string) MethodConfig { @@ -929,15 +1123,11 @@ func (cc *ClientConn) healthCheckConfig() *healthCheckConfig { return cc.sc.healthCheckConfig } -func (cc *ClientConn) getTransport(ctx context.Context, failfast bool, method string) (transport.ClientTransport, func(balancer.DoneInfo), error) { - t, done, err := cc.blockingpicker.pick(ctx, failfast, balancer.PickInfo{ +func (cc *ClientConn) getTransport(ctx context.Context, failfast bool, method string) (transport.ClientTransport, balancer.PickResult, error) { + return cc.blockingpicker.pick(ctx, failfast, balancer.PickInfo{ Ctx: ctx, FullMethodName: method, }) - if err != nil { - return nil, nil, toRPCErr(err) - } - return t, done, nil } func (cc *ClientConn) applyServiceConfigAndBalancer(sc *ServiceConfig, configSelector iresolver.ConfigSelector, addrs []resolver.Address) { @@ -962,35 +1152,26 @@ func (cc *ClientConn) applyServiceConfigAndBalancer(sc *ServiceConfig, configSel cc.retryThrottler.Store((*retryThrottler)(nil)) } - if cc.dopts.balancerBuilder == nil { - // Only look at balancer types and switch balancer if balancer dial - // option is not set. - var newBalancerName string - if cc.sc != nil && cc.sc.lbConfig != nil { - newBalancerName = cc.sc.lbConfig.name - } else { - var isGRPCLB bool - for _, a := range addrs { - if a.Type == resolver.GRPCLB { - isGRPCLB = true - break - } - } - if isGRPCLB { - newBalancerName = grpclbName - } else if cc.sc != nil && cc.sc.LB != nil { - newBalancerName = *cc.sc.LB - } else { - newBalancerName = PickFirstBalancerName + var newBalancerName string + if cc.sc != nil && cc.sc.lbConfig != nil { + newBalancerName = cc.sc.lbConfig.name + } else { + var isGRPCLB bool + for _, a := range addrs { + if a.Type == resolver.GRPCLB { + isGRPCLB = true + break } } - cc.switchBalancer(newBalancerName) - } else if cc.balancerWrapper == nil { - // Balancer dial option was set, and this is the first time handling - // resolved addresses. Build a balancer with dopts.balancerBuilder. - cc.curBalancerName = cc.dopts.balancerBuilder.Name() - cc.balancerWrapper = newCCBalancerWrapper(cc, cc.dopts.balancerBuilder, cc.balancerBuildOpts) + if isGRPCLB { + newBalancerName = grpclbName + } else if cc.sc != nil && cc.sc.LB != nil { + newBalancerName = *cc.sc.LB + } else { + newBalancerName = PickFirstBalancerName + } } + cc.balancerWrapper.switchTo(newBalancerName) } func (cc *ClientConn) resolveNow(o resolver.ResolveNowOptions) { @@ -1012,7 +1193,7 @@ func (cc *ClientConn) resolveNow(o resolver.ResolveNowOptions) { // However, if a previously unavailable network becomes available, this may be // used to trigger an immediate reconnect. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -1034,44 +1215,45 @@ func (cc *ClientConn) Close() error { cc.mu.Unlock() return ErrClientConnClosing } + + for cc.idlenessState == ccIdlenessStateExitingIdle { + cc.exitIdleCond.Wait() + } + conns := cc.conns cc.conns = nil cc.csMgr.updateState(connectivity.Shutdown) + pWrapper := cc.blockingpicker rWrapper := cc.resolverWrapper - cc.resolverWrapper = nil bWrapper := cc.balancerWrapper - cc.balancerWrapper = nil + idlenessMgr := cc.idlenessMgr cc.mu.Unlock() - cc.blockingpicker.close() - - if rWrapper != nil { - rWrapper.close() + // The order of closing matters here since the balancer wrapper assumes the + // picker is closed before it is closed. + if pWrapper != nil { + pWrapper.close() } if bWrapper != nil { bWrapper.close() } + if rWrapper != nil { + rWrapper.close() + } + if idlenessMgr != nil { + idlenessMgr.close() + } for ac := range conns { ac.tearDown(ErrClientConnClosing) } - if channelz.IsOn() { - ted := &channelz.TraceEventDesc{ - Desc: "Channel Deleted", - Severity: channelz.CtInfo, - } - if cc.dopts.channelzParentID != 0 { - ted.Parent = &channelz.TraceEventDesc{ - Desc: fmt.Sprintf("Nested channel(id:%d) deleted", cc.channelzID), - Severity: channelz.CtInfo, - } - } - channelz.AddTraceEvent(logger, cc.channelzID, 0, ted) - // TraceEvent needs to be called before RemoveEntry, as TraceEvent may add trace reference to - // the entity being deleted, and thus prevent it from being deleted right away. - channelz.RemoveEntry(cc.channelzID) - } + cc.addTraceEvent("deleted") + // TraceEvent needs to be called before RemoveEntry, as TraceEvent may add + // trace reference to the entity being deleted, and thus prevent it from being + // deleted right away. + channelz.RemoveEntry(cc.channelzID) + return nil } @@ -1096,12 +1278,13 @@ type addrConn struct { addrs []resolver.Address // All addresses that the resolver resolved to. // Use updateConnectivityState for updating addrConn's connectivity state. - state connectivity.State + state connectivity.State + stateChan chan struct{} // closed and recreated on every state change. backoffIdx int // Needs to be stateful for resetConnectBackoff. resetBackoff chan struct{} - channelzID int64 // channelz unique identification number. + channelzID *channelz.Identifier czData *channelzData } @@ -1110,8 +1293,15 @@ func (ac *addrConn) updateConnectivityState(s connectivity.State, lastErr error) if ac.state == s { return } + // When changing states, reset the state change channel. + close(ac.stateChan) + ac.stateChan = make(chan struct{}) ac.state = s - channelz.Infof(logger, ac.channelzID, "Subchannel Connectivity change to %v", s) + if lastErr == nil { + channelz.Infof(logger, ac.channelzID, "Subchannel Connectivity change to %v", s) + } else { + channelz.Infof(logger, ac.channelzID, "Subchannel Connectivity change to %v, last error: %s", s, lastErr) + } ac.cc.handleSubConnStateChange(ac.acbw, s, lastErr) } @@ -1130,113 +1320,86 @@ func (ac *addrConn) adjustParams(r transport.GoAwayReason) { } func (ac *addrConn) resetTransport() { - for i := 0; ; i++ { - if i > 0 { - ac.cc.resolveNow(resolver.ResolveNowOptions{}) - } + ac.mu.Lock() + acCtx := ac.ctx + if acCtx.Err() != nil { + ac.mu.Unlock() + return + } - ac.mu.Lock() - if ac.state == connectivity.Shutdown { - ac.mu.Unlock() - return - } + addrs := ac.addrs + backoffFor := ac.dopts.bs.Backoff(ac.backoffIdx) + // This will be the duration that dial gets to finish. + dialDuration := minConnectTimeout + if ac.dopts.minConnectTimeout != nil { + dialDuration = ac.dopts.minConnectTimeout() + } - addrs := ac.addrs - backoffFor := ac.dopts.bs.Backoff(ac.backoffIdx) - // This will be the duration that dial gets to finish. - dialDuration := minConnectTimeout - if ac.dopts.minConnectTimeout != nil { - dialDuration = ac.dopts.minConnectTimeout() - } + if dialDuration < backoffFor { + // Give dial more time as we keep failing to connect. + dialDuration = backoffFor + } + // We can potentially spend all the time trying the first address, and + // if the server accepts the connection and then hangs, the following + // addresses will never be tried. + // + // The spec doesn't mention what should be done for multiple addresses. + // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md#proposed-backoff-algorithm + connectDeadline := time.Now().Add(dialDuration) - if dialDuration < backoffFor { - // Give dial more time as we keep failing to connect. - dialDuration = backoffFor + ac.updateConnectivityState(connectivity.Connecting, nil) + ac.mu.Unlock() + + if err := ac.tryAllAddrs(acCtx, addrs, connectDeadline); err != nil { + ac.cc.resolveNow(resolver.ResolveNowOptions{}) + // After exhausting all addresses, the addrConn enters + // TRANSIENT_FAILURE. + if acCtx.Err() != nil { + return } - // We can potentially spend all the time trying the first address, and - // if the server accepts the connection and then hangs, the following - // addresses will never be tried. - // - // The spec doesn't mention what should be done for multiple addresses. - // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md#proposed-backoff-algorithm - connectDeadline := time.Now().Add(dialDuration) + ac.mu.Lock() + ac.updateConnectivityState(connectivity.TransientFailure, err) - ac.updateConnectivityState(connectivity.Connecting, nil) - ac.transport = nil + // Backoff. + b := ac.resetBackoff ac.mu.Unlock() - newTr, addr, reconnect, err := ac.tryAllAddrs(addrs, connectDeadline) - if err != nil { - // After exhausting all addresses, the addrConn enters - // TRANSIENT_FAILURE. + timer := time.NewTimer(backoffFor) + select { + case <-timer.C: ac.mu.Lock() - if ac.state == connectivity.Shutdown { - ac.mu.Unlock() - return - } - ac.updateConnectivityState(connectivity.TransientFailure, err) - - // Backoff. - b := ac.resetBackoff + ac.backoffIdx++ ac.mu.Unlock() - - timer := time.NewTimer(backoffFor) - select { - case <-timer.C: - ac.mu.Lock() - ac.backoffIdx++ - ac.mu.Unlock() - case <-b: - timer.Stop() - case <-ac.ctx.Done(): - timer.Stop() - return - } - continue + case <-b: + timer.Stop() + case <-acCtx.Done(): + timer.Stop() + return } ac.mu.Lock() - if ac.state == connectivity.Shutdown { - ac.mu.Unlock() - newTr.Close(fmt.Errorf("reached connectivity state: SHUTDOWN")) - return + if acCtx.Err() == nil { + ac.updateConnectivityState(connectivity.Idle, err) } - ac.curAddr = addr - ac.transport = newTr - ac.backoffIdx = 0 - - hctx, hcancel := context.WithCancel(ac.ctx) - ac.startHealthCheck(hctx) ac.mu.Unlock() - - // Block until the created transport is down. And when this happens, - // we restart from the top of the addr list. - <-reconnect.Done() - hcancel() - // restart connecting - the top of the loop will set state to - // CONNECTING. This is against the current connectivity semantics doc, - // however it allows for graceful behavior for RPCs not yet dispatched - // - unfortunate timing would otherwise lead to the RPC failing even - // though the TRANSIENT_FAILURE state (called for by the doc) would be - // instantaneous. - // - // Ideally we should transition to Idle here and block until there is - // RPC activity that leads to the balancer requesting a reconnect of - // the associated SubConn. + return } + // Success; reset backoff. + ac.mu.Lock() + ac.backoffIdx = 0 + ac.mu.Unlock() } -// tryAllAddrs tries to creates a connection to the addresses, and stop when at the -// first successful one. It returns the transport, the address and a Event in -// the successful case. The Event fires when the returned transport disconnects. -func (ac *addrConn) tryAllAddrs(addrs []resolver.Address, connectDeadline time.Time) (transport.ClientTransport, resolver.Address, *grpcsync.Event, error) { +// tryAllAddrs tries to creates a connection to the addresses, and stop when at +// the first successful one. It returns an error if no address was successfully +// connected, or updates ac appropriately with the new transport. +func (ac *addrConn) tryAllAddrs(ctx context.Context, addrs []resolver.Address, connectDeadline time.Time) error { var firstConnErr error for _, addr := range addrs { - ac.mu.Lock() - if ac.state == connectivity.Shutdown { - ac.mu.Unlock() - return nil, resolver.Address{}, nil, errConnClosing + if ctx.Err() != nil { + return errConnClosing } + ac.mu.Lock() ac.cc.mu.RLock() ac.dopts.copts.KeepaliveParams = ac.cc.mkp @@ -1250,9 +1413,9 @@ func (ac *addrConn) tryAllAddrs(addrs []resolver.Address, connectDeadline time.T channelz.Infof(logger, ac.channelzID, "Subchannel picks a new address %q to connect", addr.Addr) - newTr, reconnect, err := ac.createTransport(addr, copts, connectDeadline) + err := ac.createTransport(ctx, addr, copts, connectDeadline) if err == nil { - return newTr, addr, reconnect, nil + return nil } if firstConnErr == nil { firstConnErr = err @@ -1261,86 +1424,90 @@ func (ac *addrConn) tryAllAddrs(addrs []resolver.Address, connectDeadline time.T } // Couldn't connect to any address. - return nil, resolver.Address{}, nil, firstConnErr + return firstConnErr } -// createTransport creates a connection to addr. It returns the transport and a -// Event in the successful case. The Event fires when the returned transport -// disconnects. -func (ac *addrConn) createTransport(addr resolver.Address, copts transport.ConnectOptions, connectDeadline time.Time) (transport.ClientTransport, *grpcsync.Event, error) { - prefaceReceived := make(chan struct{}) - onCloseCalled := make(chan struct{}) - reconnect := grpcsync.NewEvent() - - // addr.ServerName takes precedent over ClientConn authority, if present. - if addr.ServerName == "" { - addr.ServerName = ac.cc.authority - } +// createTransport creates a connection to addr. It returns an error if the +// address was not successfully connected, or updates ac appropriately with the +// new transport. +func (ac *addrConn) createTransport(ctx context.Context, addr resolver.Address, copts transport.ConnectOptions, connectDeadline time.Time) error { + addr.ServerName = ac.cc.getServerName(addr) + hctx, hcancel := context.WithCancel(ctx) - once := sync.Once{} - onGoAway := func(r transport.GoAwayReason) { + onClose := func(r transport.GoAwayReason) { ac.mu.Lock() + defer ac.mu.Unlock() + // adjust params based on GoAwayReason ac.adjustParams(r) - once.Do(func() { - if ac.state == connectivity.Ready { - // Prevent this SubConn from being used for new RPCs by setting its - // state to Connecting. - // - // TODO: this should be Idle when grpc-go properly supports it. - ac.updateConnectivityState(connectivity.Connecting, nil) - } - }) - ac.mu.Unlock() - reconnect.Fire() - } - - onClose := func() { - ac.mu.Lock() - once.Do(func() { - if ac.state == connectivity.Ready { - // Prevent this SubConn from being used for new RPCs by setting its - // state to Connecting. - // - // TODO: this should be Idle when grpc-go properly supports it. - ac.updateConnectivityState(connectivity.Connecting, nil) - } - }) - ac.mu.Unlock() - close(onCloseCalled) - reconnect.Fire() - } - - onPrefaceReceipt := func() { - close(prefaceReceived) + if ctx.Err() != nil { + // Already shut down or connection attempt canceled. tearDown() or + // updateAddrs() already cleared the transport and canceled hctx + // via ac.ctx, and we expected this connection to be closed, so do + // nothing here. + return + } + hcancel() + if ac.transport == nil { + // We're still connecting to this address, which could error. Do + // not update the connectivity state or resolve; these will happen + // at the end of the tryAllAddrs connection loop in the event of an + // error. + return + } + ac.transport = nil + // Refresh the name resolver on any connection loss. + ac.cc.resolveNow(resolver.ResolveNowOptions{}) + // Always go idle and wait for the LB policy to initiate a new + // connection attempt. + ac.updateConnectivityState(connectivity.Idle, nil) } - connectCtx, cancel := context.WithDeadline(ac.ctx, connectDeadline) + connectCtx, cancel := context.WithDeadline(ctx, connectDeadline) defer cancel() - if channelz.IsOn() { - copts.ChannelzParentID = ac.channelzID - } + copts.ChannelzParentID = ac.channelzID - newTr, err := transport.NewClientTransport(connectCtx, ac.cc.ctx, addr, copts, onPrefaceReceipt, onGoAway, onClose) + newTr, err := transport.NewClientTransport(connectCtx, ac.cc.ctx, addr, copts, onClose) if err != nil { + if logger.V(2) { + logger.Infof("Creating new client transport to %q: %v", addr, err) + } // newTr is either nil, or closed. - channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %v. Err: %v. Reconnecting...", addr, err) - return nil, nil, err + hcancel() + channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %s. Err: %v", addr, err) + return err } - select { - case <-time.After(time.Until(connectDeadline)): - // We didn't get the preface in time. - newTr.Close(fmt.Errorf("failed to receive server preface within timeout")) - channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %v: didn't receive server preface in time. Reconnecting...", addr) - return nil, nil, errors.New("timed out waiting for server handshake") - case <-prefaceReceived: - // We got the preface - huzzah! things are good. - case <-onCloseCalled: - // The transport has already closed - noop. - return nil, nil, errors.New("connection closed") - // TODO(deklerk) this should bail on ac.ctx.Done(). Add a test and fix. + ac.mu.Lock() + defer ac.mu.Unlock() + if ctx.Err() != nil { + // This can happen if the subConn was removed while in `Connecting` + // state. tearDown() would have set the state to `Shutdown`, but + // would not have closed the transport since ac.transport would not + // have been set at that point. + // + // We run this in a goroutine because newTr.Close() calls onClose() + // inline, which requires locking ac.mu. + // + // The error we pass to Close() is immaterial since there are no open + // streams at this point, so no trailers with error details will be sent + // out. We just need to pass a non-nil error. + // + // This can also happen when updateAddrs is called during a connection + // attempt. + go newTr.Close(transport.ErrConnClosing) + return nil + } + if hctx.Err() != nil { + // onClose was already called for this connection, but the connection + // was successfully established first. Consider it a success and set + // the new state to Idle. + ac.updateConnectivityState(connectivity.Idle, nil) + return nil } - return newTr, reconnect, nil + ac.curAddr = addr + ac.transport = newTr + ac.startHealthCheck(hctx) // Will set state to READY if appropriate. + return nil } // startHealthCheck starts the health checking stream (RPC) to watch the health @@ -1410,7 +1577,7 @@ func (ac *addrConn) startHealthCheck(ctx context.Context) { if status.Code(err) == codes.Unimplemented { channelz.Error(logger, ac.channelzID, "Subchannel health check is unimplemented at server side, thus health check is disabled") } else { - channelz.Errorf(logger, ac.channelzID, "HealthCheckFunc exits with unexpected error %v", err) + channelz.Errorf(logger, ac.channelzID, "Health checking failed: %v", err) } } }() @@ -1424,26 +1591,37 @@ func (ac *addrConn) resetConnectBackoff() { ac.mu.Unlock() } -// getReadyTransport returns the transport if ac's state is READY. -// Otherwise it returns nil, false. -// If ac's state is IDLE, it will trigger ac to connect. -func (ac *addrConn) getReadyTransport() (transport.ClientTransport, bool) { +// getReadyTransport returns the transport if ac's state is READY or nil if not. +func (ac *addrConn) getReadyTransport() transport.ClientTransport { ac.mu.Lock() - if ac.state == connectivity.Ready && ac.transport != nil { - t := ac.transport - ac.mu.Unlock() - return t, true - } - var idle bool - if ac.state == connectivity.Idle { - idle = true + defer ac.mu.Unlock() + if ac.state == connectivity.Ready { + return ac.transport } - ac.mu.Unlock() - // Trigger idle ac to connect. - if idle { - ac.connect() + return nil +} + +// getTransport waits until the addrconn is ready and returns the transport. +// If the context expires first, returns an appropriate status. If the +// addrConn is stopped first, returns an Unavailable status error. +func (ac *addrConn) getTransport(ctx context.Context) (transport.ClientTransport, error) { + for ctx.Err() == nil { + ac.mu.Lock() + t, state, sc := ac.transport, ac.state, ac.stateChan + ac.mu.Unlock() + if state == connectivity.Ready { + return t, nil + } + if state == connectivity.Shutdown { + return nil, status.Errorf(codes.Unavailable, "SubConn shutting down") + } + + select { + case <-ctx.Done(): + case <-sc: + } } - return nil, false + return nil, status.FromContextError(ctx.Err()).Err() } // tearDown starts to tear down the addrConn. @@ -1473,19 +1651,18 @@ func (ac *addrConn) tearDown(err error) { curTr.GracefulClose() ac.mu.Lock() } - if channelz.IsOn() { - channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{ - Desc: "Subchannel Deleted", + channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{ + Desc: "Subchannel deleted", + Severity: channelz.CtInfo, + Parent: &channelz.TraceEventDesc{ + Desc: fmt.Sprintf("Subchannel(id:%d) deleted", ac.channelzID.Int()), Severity: channelz.CtInfo, - Parent: &channelz.TraceEventDesc{ - Desc: fmt.Sprintf("Subchanel(id:%d) deleted", ac.channelzID), - Severity: channelz.CtInfo, - }, - }) - // TraceEvent needs to be called before RemoveEntry, as TraceEvent may add trace reference to - // the entity being deleted, and thus prevent it from being deleted right away. - channelz.RemoveEntry(ac.channelzID) - } + }, + }) + // TraceEvent needs to be called before RemoveEntry, as TraceEvent may add + // trace reference to the entity being deleted, and thus prevent it from + // being deleted right away. + channelz.RemoveEntry(ac.channelzID) ac.mu.Unlock() } @@ -1574,6 +1751,9 @@ func (c *channelzChannel) ChannelzMetric() *channelz.ChannelInternalMetric { // referenced by users. var ErrClientConnTimeout = errors.New("grpc: timed out when dialing") +// getResolver finds the scheme in the cc's resolvers or the global registry. +// scheme should always be lowercase (typically by virtue of url.Parse() +// performing proper RFC3986 behavior). func (cc *ClientConn) getResolver(scheme string) resolver.Builder { for _, rb := range cc.dopts.resolvers { if scheme == rb.Scheme() { @@ -1594,3 +1774,206 @@ func (cc *ClientConn) connectionError() error { defer cc.lceMu.Unlock() return cc.lastConnectionError } + +// parseTargetAndFindResolver parses the user's dial target and stores the +// parsed target in `cc.parsedTarget`. +// +// The resolver to use is determined based on the scheme in the parsed target +// and the same is stored in `cc.resolverBuilder`. +// +// Doesn't grab cc.mu as this method is expected to be called only at Dial time. +func (cc *ClientConn) parseTargetAndFindResolver() error { + channelz.Infof(logger, cc.channelzID, "original dial target is: %q", cc.target) + + var rb resolver.Builder + parsedTarget, err := parseTarget(cc.target) + if err != nil { + channelz.Infof(logger, cc.channelzID, "dial target %q parse failed: %v", cc.target, err) + } else { + channelz.Infof(logger, cc.channelzID, "parsed dial target is: %+v", parsedTarget) + rb = cc.getResolver(parsedTarget.URL.Scheme) + if rb != nil { + cc.parsedTarget = parsedTarget + cc.resolverBuilder = rb + return nil + } + } + + // We are here because the user's dial target did not contain a scheme or + // specified an unregistered scheme. We should fallback to the default + // scheme, except when a custom dialer is specified in which case, we should + // always use passthrough scheme. + defScheme := resolver.GetDefaultScheme() + channelz.Infof(logger, cc.channelzID, "fallback to scheme %q", defScheme) + canonicalTarget := defScheme + ":///" + cc.target + + parsedTarget, err = parseTarget(canonicalTarget) + if err != nil { + channelz.Infof(logger, cc.channelzID, "dial target %q parse failed: %v", canonicalTarget, err) + return err + } + channelz.Infof(logger, cc.channelzID, "parsed dial target is: %+v", parsedTarget) + rb = cc.getResolver(parsedTarget.URL.Scheme) + if rb == nil { + return fmt.Errorf("could not get resolver for default scheme: %q", parsedTarget.URL.Scheme) + } + cc.parsedTarget = parsedTarget + cc.resolverBuilder = rb + return nil +} + +// parseTarget uses RFC 3986 semantics to parse the given target into a +// resolver.Target struct containing url. Query params are stripped from the +// endpoint. +func parseTarget(target string) (resolver.Target, error) { + u, err := url.Parse(target) + if err != nil { + return resolver.Target{}, err + } + + return resolver.Target{URL: *u}, nil +} + +func encodeAuthority(authority string) string { + const upperhex = "0123456789ABCDEF" + + // Return for characters that must be escaped as per + // Valid chars are mentioned here: + // https://datatracker.ietf.org/doc/html/rfc3986#section-3.2 + shouldEscape := func(c byte) bool { + // Alphanum are always allowed. + if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || '0' <= c && c <= '9' { + return false + } + switch c { + case '-', '_', '.', '~': // Unreserved characters + return false + case '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=': // Subdelim characters + return false + case ':', '[', ']', '@': // Authority related delimeters + return false + } + // Everything else must be escaped. + return true + } + + hexCount := 0 + for i := 0; i < len(authority); i++ { + c := authority[i] + if shouldEscape(c) { + hexCount++ + } + } + + if hexCount == 0 { + return authority + } + + required := len(authority) + 2*hexCount + t := make([]byte, required) + + j := 0 + // This logic is a barebones version of escape in the go net/url library. + for i := 0; i < len(authority); i++ { + switch c := authority[i]; { + case shouldEscape(c): + t[j] = '%' + t[j+1] = upperhex[c>>4] + t[j+2] = upperhex[c&15] + j += 3 + default: + t[j] = authority[i] + j++ + } + } + return string(t) +} + +// Determine channel authority. The order of precedence is as follows: +// - user specified authority override using `WithAuthority` dial option +// - creds' notion of server name for the authentication handshake +// - endpoint from dial target of the form "scheme://[authority]/endpoint" +// +// Stores the determined authority in `cc.authority`. +// +// Returns a non-nil error if the authority returned by the transport +// credentials do not match the authority configured through the dial option. +// +// Doesn't grab cc.mu as this method is expected to be called only at Dial time. +func (cc *ClientConn) determineAuthority() error { + dopts := cc.dopts + // Historically, we had two options for users to specify the serverName or + // authority for a channel. One was through the transport credentials + // (either in its constructor, or through the OverrideServerName() method). + // The other option (for cases where WithInsecure() dial option was used) + // was to use the WithAuthority() dial option. + // + // A few things have changed since: + // - `insecure` package with an implementation of the `TransportCredentials` + // interface for the insecure case + // - WithAuthority() dial option support for secure credentials + authorityFromCreds := "" + if creds := dopts.copts.TransportCredentials; creds != nil && creds.Info().ServerName != "" { + authorityFromCreds = creds.Info().ServerName + } + authorityFromDialOption := dopts.authority + if (authorityFromCreds != "" && authorityFromDialOption != "") && authorityFromCreds != authorityFromDialOption { + return fmt.Errorf("ClientConn's authority from transport creds %q and dial option %q don't match", authorityFromCreds, authorityFromDialOption) + } + + endpoint := cc.parsedTarget.Endpoint() + target := cc.target + switch { + case authorityFromDialOption != "": + cc.authority = authorityFromDialOption + case authorityFromCreds != "": + cc.authority = authorityFromCreds + case strings.HasPrefix(target, "unix:") || strings.HasPrefix(target, "unix-abstract:"): + // TODO: remove when the unix resolver implements optional interface to + // return channel authority. + cc.authority = "localhost" + case strings.HasPrefix(endpoint, ":"): + cc.authority = "localhost" + endpoint + default: + // TODO: Define an optional interface on the resolver builder to return + // the channel authority given the user's dial target. For resolvers + // which don't implement this interface, we will use the endpoint from + // "scheme://authority/endpoint" as the default authority. + // Escape the endpoint to handle use cases where the endpoint + // might not be a valid authority by default. + // For example an endpoint which has multiple paths like + // 'a/b/c', which is not a valid authority by default. + cc.authority = encodeAuthority(endpoint) + } + channelz.Infof(logger, cc.channelzID, "Channel authority set to %q", cc.authority) + return nil +} + +// initResolverWrapper creates a ccResolverWrapper, which builds the name +// resolver. This method grabs the lock to assign the newly built resolver +// wrapper to the cc.resolverWrapper field. +func (cc *ClientConn) initResolverWrapper(creds credentials.TransportCredentials) error { + rw, err := newCCResolverWrapper(cc, ccResolverWrapperOpts{ + target: cc.parsedTarget, + builder: cc.resolverBuilder, + bOpts: resolver.BuildOptions{ + DisableServiceConfig: cc.dopts.disableServiceConfig, + DialCreds: creds, + CredsBundle: cc.dopts.copts.CredsBundle, + Dialer: cc.dopts.copts.Dialer, + }, + channelzID: cc.channelzID, + }) + if err != nil { + return fmt.Errorf("failed to build resolver: %v", err) + } + // Resolver implementations may report state update or error inline when + // built (or right after), and this is handled in cc.updateResolverState. + // Also, an error from the resolver might lead to a re-resolution request + // from the balancer, which is handled in resolveNow() where + // `cc.resolverWrapper` is accessed. Hence, we need to hold the lock here. + cc.mu.Lock() + cc.resolverWrapper = rw + cc.mu.Unlock() + return nil +} diff --git a/vendor/google.golang.org/grpc/codes/code_string.go b/vendor/google.golang.org/grpc/codes/code_string.go index 0b206a57..934fac2b 100644 --- a/vendor/google.golang.org/grpc/codes/code_string.go +++ b/vendor/google.golang.org/grpc/codes/code_string.go @@ -18,7 +18,15 @@ package codes -import "strconv" +import ( + "strconv" + + "google.golang.org/grpc/internal" +) + +func init() { + internal.CanonicalString = canonicalString +} func (c Code) String() string { switch c { @@ -60,3 +68,44 @@ func (c Code) String() string { return "Code(" + strconv.FormatInt(int64(c), 10) + ")" } } + +func canonicalString(c Code) string { + switch c { + case OK: + return "OK" + case Canceled: + return "CANCELLED" + case Unknown: + return "UNKNOWN" + case InvalidArgument: + return "INVALID_ARGUMENT" + case DeadlineExceeded: + return "DEADLINE_EXCEEDED" + case NotFound: + return "NOT_FOUND" + case AlreadyExists: + return "ALREADY_EXISTS" + case PermissionDenied: + return "PERMISSION_DENIED" + case ResourceExhausted: + return "RESOURCE_EXHAUSTED" + case FailedPrecondition: + return "FAILED_PRECONDITION" + case Aborted: + return "ABORTED" + case OutOfRange: + return "OUT_OF_RANGE" + case Unimplemented: + return "UNIMPLEMENTED" + case Internal: + return "INTERNAL" + case Unavailable: + return "UNAVAILABLE" + case DataLoss: + return "DATA_LOSS" + case Unauthenticated: + return "UNAUTHENTICATED" + default: + return "CODE(" + strconv.FormatInt(int64(c), 10) + ")" + } +} diff --git a/vendor/google.golang.org/grpc/connectivity/connectivity.go b/vendor/google.golang.org/grpc/connectivity/connectivity.go index 01015626..4a899264 100644 --- a/vendor/google.golang.org/grpc/connectivity/connectivity.go +++ b/vendor/google.golang.org/grpc/connectivity/connectivity.go @@ -18,7 +18,6 @@ // Package connectivity defines connectivity semantics. // For details, see https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md. -// All APIs in this package are experimental. package connectivity import ( @@ -45,7 +44,7 @@ func (s State) String() string { return "SHUTDOWN" default: logger.Errorf("unknown connectivity state: %d", s) - return "Invalid-State" + return "INVALID_STATE" } } @@ -61,3 +60,35 @@ const ( // Shutdown indicates the ClientConn has started shutting down. Shutdown ) + +// ServingMode indicates the current mode of operation of the server. +// +// Only xDS enabled gRPC servers currently report their serving mode. +type ServingMode int + +const ( + // ServingModeStarting indicates that the server is starting up. + ServingModeStarting ServingMode = iota + // ServingModeServing indicates that the server contains all required + // configuration and is serving RPCs. + ServingModeServing + // ServingModeNotServing indicates that the server is not accepting new + // connections. Existing connections will be closed gracefully, allowing + // in-progress RPCs to complete. A server enters this mode when it does not + // contain the required configuration to serve RPCs. + ServingModeNotServing +) + +func (s ServingMode) String() string { + switch s { + case ServingModeStarting: + return "STARTING" + case ServingModeServing: + return "SERVING" + case ServingModeNotServing: + return "NOT_SERVING" + default: + logger.Errorf("unknown serving mode: %d", s) + return "INVALID_MODE" + } +} diff --git a/vendor/google.golang.org/grpc/credentials/credentials.go b/vendor/google.golang.org/grpc/credentials/credentials.go index 7eee7e4e..5feac3aa 100644 --- a/vendor/google.golang.org/grpc/credentials/credentials.go +++ b/vendor/google.golang.org/grpc/credentials/credentials.go @@ -36,16 +36,16 @@ import ( // PerRPCCredentials defines the common interface for the credentials which need to // attach security information to every RPC (e.g., oauth2). type PerRPCCredentials interface { - // GetRequestMetadata gets the current request metadata, refreshing - // tokens if required. This should be called by the transport layer on - // each request, and the data should be populated in headers or other - // context. If a status code is returned, it will be used as the status - // for the RPC. uri is the URI of the entry point for the request. - // When supported by the underlying implementation, ctx can be used for - // timeout and cancellation. Additionally, RequestInfo data will be - // available via ctx to this call. - // TODO(zhaoq): Define the set of the qualified keys instead of leaving - // it as an arbitrary string. + // GetRequestMetadata gets the current request metadata, refreshing tokens + // if required. This should be called by the transport layer on each + // request, and the data should be populated in headers or other + // context. If a status code is returned, it will be used as the status for + // the RPC (restricted to an allowable set of codes as defined by gRFC + // A54). uri is the URI of the entry point for the request. When supported + // by the underlying implementation, ctx can be used for timeout and + // cancellation. Additionally, RequestInfo data will be available via ctx + // to this call. TODO(zhaoq): Define the set of the qualified keys instead + // of leaving it as an arbitrary string. GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) // RequireTransportSecurity indicates whether the credentials requires // transport security. @@ -140,6 +140,11 @@ type TransportCredentials interface { // Additionally, ClientHandshakeInfo data will be available via the context // passed to this call. // + // The second argument to this method is the `:authority` header value used + // while creating new streams on this connection after authentication + // succeeds. Implementations must use this as the server name during the + // authentication handshake. + // // If the returned net.Conn is closed, it MUST close the net.Conn provided. ClientHandshake(context.Context, string, net.Conn) (net.Conn, AuthInfo, error) // ServerHandshake does the authentication handshake for servers. It returns @@ -153,9 +158,13 @@ type TransportCredentials interface { Info() ProtocolInfo // Clone makes a copy of this TransportCredentials. Clone() TransportCredentials - // OverrideServerName overrides the server name used to verify the hostname on the returned certificates from the server. - // gRPC internals also use it to override the virtual hosting name if it is set. - // It must be called before dialing. Currently, this is only used by grpclb. + // OverrideServerName specifies the value used for the following: + // - verifying the hostname on the returned certificates + // - as SNI in the client's handshake to support virtual hosting + // - as the value for `:authority` header at stream creation time + // + // Deprecated: use grpc.WithAuthority instead. Will be supported + // throughout 1.x. OverrideServerName(string) error } @@ -169,8 +178,18 @@ type TransportCredentials interface { // // This API is experimental. type Bundle interface { + // TransportCredentials returns the transport credentials from the Bundle. + // + // Implementations must return non-nil transport credentials. If transport + // security is not needed by the Bundle, implementations may choose to + // return insecure.NewCredentials(). TransportCredentials() TransportCredentials + + // PerRPCCredentials returns the per-RPC credentials from the Bundle. + // + // May be nil if per-RPC credentials are not needed. PerRPCCredentials() PerRPCCredentials + // NewWithMode should make a copy of Bundle, and switch mode. Modifying the // existing Bundle may cause races. // diff --git a/vendor/google.golang.org/grpc/credentials/go12.go b/vendor/google.golang.org/grpc/credentials/go12.go deleted file mode 100644 index ccbf35b3..00000000 --- a/vendor/google.golang.org/grpc/credentials/go12.go +++ /dev/null @@ -1,30 +0,0 @@ -// +build go1.12 - -/* - * - * Copyright 2019 gRPC authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - */ - -package credentials - -import "crypto/tls" - -// This init function adds cipher suite constants only defined in Go 1.12. -func init() { - cipherSuiteLookup[tls.TLS_AES_128_GCM_SHA256] = "TLS_AES_128_GCM_SHA256" - cipherSuiteLookup[tls.TLS_AES_256_GCM_SHA384] = "TLS_AES_256_GCM_SHA384" - cipherSuiteLookup[tls.TLS_CHACHA20_POLY1305_SHA256] = "TLS_CHACHA20_POLY1305_SHA256" -} diff --git a/vendor/google.golang.org/grpc/credentials/insecure/insecure.go b/vendor/google.golang.org/grpc/credentials/insecure/insecure.go new file mode 100644 index 00000000..82bee144 --- /dev/null +++ b/vendor/google.golang.org/grpc/credentials/insecure/insecure.go @@ -0,0 +1,98 @@ +/* + * + * Copyright 2020 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package insecure provides an implementation of the +// credentials.TransportCredentials interface which disables transport security. +package insecure + +import ( + "context" + "net" + + "google.golang.org/grpc/credentials" +) + +// NewCredentials returns a credentials which disables transport security. +// +// Note that using this credentials with per-RPC credentials which require +// transport security is incompatible and will cause grpc.Dial() to fail. +func NewCredentials() credentials.TransportCredentials { + return insecureTC{} +} + +// insecureTC implements the insecure transport credentials. The handshake +// methods simply return the passed in net.Conn and set the security level to +// NoSecurity. +type insecureTC struct{} + +func (insecureTC) ClientHandshake(ctx context.Context, _ string, conn net.Conn) (net.Conn, credentials.AuthInfo, error) { + return conn, info{credentials.CommonAuthInfo{SecurityLevel: credentials.NoSecurity}}, nil +} + +func (insecureTC) ServerHandshake(conn net.Conn) (net.Conn, credentials.AuthInfo, error) { + return conn, info{credentials.CommonAuthInfo{SecurityLevel: credentials.NoSecurity}}, nil +} + +func (insecureTC) Info() credentials.ProtocolInfo { + return credentials.ProtocolInfo{SecurityProtocol: "insecure"} +} + +func (insecureTC) Clone() credentials.TransportCredentials { + return insecureTC{} +} + +func (insecureTC) OverrideServerName(string) error { + return nil +} + +// info contains the auth information for an insecure connection. +// It implements the AuthInfo interface. +type info struct { + credentials.CommonAuthInfo +} + +// AuthType returns the type of info as a string. +func (info) AuthType() string { + return "insecure" +} + +// insecureBundle implements an insecure bundle. +// An insecure bundle provides a thin wrapper around insecureTC to support +// the credentials.Bundle interface. +type insecureBundle struct{} + +// NewBundle returns a bundle with disabled transport security and no per rpc credential. +func NewBundle() credentials.Bundle { + return insecureBundle{} +} + +// NewWithMode returns a new insecure Bundle. The mode is ignored. +func (insecureBundle) NewWithMode(string) (credentials.Bundle, error) { + return insecureBundle{}, nil +} + +// PerRPCCredentials returns an nil implementation as insecure +// bundle does not support a per rpc credential. +func (insecureBundle) PerRPCCredentials() credentials.PerRPCCredentials { + return nil +} + +// TransportCredentials returns the underlying insecure transport credential. +func (insecureBundle) TransportCredentials() credentials.TransportCredentials { + return NewCredentials() +} diff --git a/vendor/google.golang.org/grpc/credentials/tls.go b/vendor/google.golang.org/grpc/credentials/tls.go index 8ee7124f..877b7cd2 100644 --- a/vendor/google.golang.org/grpc/credentials/tls.go +++ b/vendor/google.golang.org/grpc/credentials/tls.go @@ -23,9 +23,9 @@ import ( "crypto/tls" "crypto/x509" "fmt" - "io/ioutil" "net" "net/url" + "os" credinternal "google.golang.org/grpc/internal/credentials" ) @@ -166,7 +166,7 @@ func NewClientTLSFromCert(cp *x509.CertPool, serverNameOverride string) Transpor // it will override the virtual host name of authority (e.g. :authority header // field) in requests. func NewClientTLSFromFile(certFile, serverNameOverride string) (TransportCredentials, error) { - b, err := ioutil.ReadFile(certFile) + b, err := os.ReadFile(certFile) if err != nil { return nil, err } @@ -195,7 +195,7 @@ func NewServerTLSFromFile(certFile, keyFile string) (TransportCredentials, error // TLSChannelzSecurityValue defines the struct that TLS protocol should return // from GetSecurityValue(), containing security info like cipher and certificate used. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -230,4 +230,7 @@ var cipherSuiteLookup = map[uint16]string{ tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256: "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256", tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305: "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305", tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305: "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305", + tls.TLS_AES_128_GCM_SHA256: "TLS_AES_128_GCM_SHA256", + tls.TLS_AES_256_GCM_SHA384: "TLS_AES_256_GCM_SHA384", + tls.TLS_CHACHA20_POLY1305_SHA256: "TLS_CHACHA20_POLY1305_SHA256", } diff --git a/vendor/google.golang.org/grpc/dialoptions.go b/vendor/google.golang.org/grpc/dialoptions.go index 7a497237..23ea9523 100644 --- a/vendor/google.golang.org/grpc/dialoptions.go +++ b/vendor/google.golang.org/grpc/dialoptions.go @@ -20,22 +20,34 @@ package grpc import ( "context" - "fmt" "net" "time" "google.golang.org/grpc/backoff" - "google.golang.org/grpc/balancer" + "google.golang.org/grpc/channelz" "google.golang.org/grpc/credentials" + "google.golang.org/grpc/credentials/insecure" "google.golang.org/grpc/internal" internalbackoff "google.golang.org/grpc/internal/backoff" - "google.golang.org/grpc/internal/envconfig" + "google.golang.org/grpc/internal/binarylog" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/keepalive" "google.golang.org/grpc/resolver" "google.golang.org/grpc/stats" ) +func init() { + internal.AddGlobalDialOptions = func(opt ...DialOption) { + globalDialOptions = append(globalDialOptions, opt...) + } + internal.ClearGlobalDialOptions = func() { + globalDialOptions = nil + } + internal.WithBinaryLogger = withBinaryLogger + internal.JoinDialOptions = newJoinDialOption + internal.DisableGlobalDialOptions = newDisableGlobalDialOptions +} + // dialOptions configure a Dial call. dialOptions are set by the DialOption // values passed to Dial. type dialOptions struct { @@ -45,20 +57,18 @@ type dialOptions struct { chainUnaryInts []UnaryClientInterceptor chainStreamInts []StreamClientInterceptor - cp Compressor - dc Decompressor - bs internalbackoff.Strategy - block bool - returnLastError bool - insecure bool - timeout time.Duration - scChan <-chan ServiceConfig - authority string - copts transport.ConnectOptions - callOptions []CallOption - // This is used by WithBalancerName dial option. - balancerBuilder balancer.Builder - channelzParentID int64 + cp Compressor + dc Decompressor + bs internalbackoff.Strategy + block bool + returnLastError bool + timeout time.Duration + scChan <-chan ServiceConfig + authority string + binaryLogger binarylog.Logger + copts transport.ConnectOptions + callOptions []CallOption + channelzParentID *channelz.Identifier disableServiceConfig bool disableRetry bool disableHealthCheck bool @@ -67,6 +77,8 @@ type dialOptions struct { defaultServiceConfig *ServiceConfig // defaultServiceConfig is parsed from defaultServiceConfigRawJSON. defaultServiceConfigRawJSON *string resolvers []resolver.Builder + idleTimeout time.Duration + recvBufferPool SharedBufferPool } // DialOption configures how we set up the connection. @@ -74,10 +86,12 @@ type DialOption interface { apply(*dialOptions) } +var globalDialOptions []DialOption + // EmptyDialOption does not alter the dial configuration. It can be embedded in // another structure to build custom dial options. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -85,6 +99,16 @@ type EmptyDialOption struct{} func (EmptyDialOption) apply(*dialOptions) {} +type disableGlobalDialOptions struct{} + +func (disableGlobalDialOptions) apply(*dialOptions) {} + +// newDisableGlobalDialOptions returns a DialOption that prevents the ClientConn +// from applying the global DialOptions (set via AddGlobalDialOptions). +func newDisableGlobalDialOptions() DialOption { + return &disableGlobalDialOptions{} +} + // funcDialOption wraps a function that modifies dialOptions into an // implementation of the DialOption interface. type funcDialOption struct { @@ -101,13 +125,28 @@ func newFuncDialOption(f func(*dialOptions)) *funcDialOption { } } +type joinDialOption struct { + opts []DialOption +} + +func (jdo *joinDialOption) apply(do *dialOptions) { + for _, opt := range jdo.opts { + opt.apply(do) + } +} + +func newJoinDialOption(opts ...DialOption) DialOption { + return &joinDialOption{opts: opts} +} + // WithWriteBufferSize determines how much data can be batched before doing a // write on the wire. The corresponding memory allocation for this buffer will // be twice the size to keep syscalls low. The default value for this buffer is // 32KB. // -// Zero will disable the write buffer such that each write will be on underlying -// connection. Note: A Send call may not directly translate to a write. +// Zero or negative values will disable the write buffer such that each write +// will be on underlying connection. Note: A Send call may not directly +// translate to a write. func WithWriteBufferSize(s int) DialOption { return newFuncDialOption(func(o *dialOptions) { o.copts.WriteBufferSize = s @@ -117,8 +156,9 @@ func WithWriteBufferSize(s int) DialOption { // WithReadBufferSize lets you set the size of read buffer, this determines how // much data can be read at most for each read syscall. // -// The default value for this buffer is 32KB. Zero will disable read buffer for -// a connection so data framer can access the underlying conn directly. +// The default value for this buffer is 32KB. Zero or negative values will +// disable read buffer for a connection so data framer can access the +// underlying conn directly. func WithReadBufferSize(s int) DialOption { return newFuncDialOption(func(o *dialOptions) { o.copts.ReadBufferSize = s @@ -196,25 +236,6 @@ func WithDecompressor(dc Decompressor) DialOption { }) } -// WithBalancerName sets the balancer that the ClientConn will be initialized -// with. Balancer registered with balancerName will be used. This function -// panics if no balancer was registered by balancerName. -// -// The balancer cannot be overridden by balancer option specified by service -// config. -// -// Deprecated: use WithDefaultServiceConfig and WithDisableServiceConfig -// instead. Will be removed in a future 1.x release. -func WithBalancerName(balancerName string) DialOption { - builder := balancer.Get(balancerName) - if builder == nil { - panic(fmt.Sprintf("grpc.WithBalancerName: no balancer is registered for name %v", balancerName)) - } - return newFuncDialOption(func(o *dialOptions) { - o.balancerBuilder = builder - }) -} - // WithServiceConfig returns a DialOption which has a channel to read the // service configuration. // @@ -228,18 +249,14 @@ func WithServiceConfig(c <-chan ServiceConfig) DialOption { }) } -// WithConnectParams configures the dialer to use the provided ConnectParams. +// WithConnectParams configures the ClientConn to use the provided ConnectParams +// for creating and maintaining connections to servers. // // The backoff configuration specified as part of the ConnectParams overrides // all defaults specified in // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md. Consider // using the backoff.DefaultConfig as a base, in cases where you want to // override only a subset of the backoff configuration. -// -// Experimental -// -// Notice: This API is EXPERIMENTAL and may be changed or removed in a -// later release. func WithConnectParams(p ConnectParams) DialOption { return newFuncDialOption(func(o *dialOptions) { o.bs = internalbackoff.Exponential{Config: p.Backoff} @@ -277,9 +294,12 @@ func withBackoff(bs internalbackoff.Strategy) DialOption { }) } -// WithBlock returns a DialOption which makes caller of Dial blocks until the +// WithBlock returns a DialOption which makes callers of Dial block until the // underlying connection is up. Without this, Dial returns immediately and // connecting the server happens in background. +// +// Use of this feature is not recommended. For more information, please see: +// https://github.com/grpc/grpc-go/blob/master/Documentation/anti-patterns.md func WithBlock() DialOption { return newFuncDialOption(func(o *dialOptions) { o.block = true @@ -291,7 +311,10 @@ func WithBlock() DialOption { // the context.DeadlineExceeded error. // Implies WithBlock() // -// Experimental +// Use of this feature is not recommended. For more information, please see: +// https://github.com/grpc/grpc-go/blob/master/Documentation/anti-patterns.md +// +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -303,18 +326,24 @@ func WithReturnConnectionError() DialOption { } // WithInsecure returns a DialOption which disables transport security for this -// ClientConn. Note that transport security is required unless WithInsecure is -// set. +// ClientConn. Under the hood, it uses insecure.NewCredentials(). +// +// Note that using this DialOption with per-RPC credentials (through +// WithCredentialsBundle or WithPerRPCCredentials) which require transport +// security is incompatible and will cause grpc.Dial() to fail. +// +// Deprecated: use WithTransportCredentials and insecure.NewCredentials() +// instead. Will be supported throughout 1.x. func WithInsecure() DialOption { return newFuncDialOption(func(o *dialOptions) { - o.insecure = true + o.copts.TransportCredentials = insecure.NewCredentials() }) } // WithNoProxy returns a DialOption which disables the use of proxies for this // ClientConn. This is ignored if WithDialer or WithContextDialer are used. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -345,7 +374,7 @@ func WithPerRPCCredentials(creds credentials.PerRPCCredentials) DialOption { // the ClientConn.WithCreds. This should not be used together with // WithTransportCredentials. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -401,7 +430,21 @@ func WithDialer(f func(string, time.Duration) (net.Conn, error)) DialOption { // all the RPCs and underlying network connections in this ClientConn. func WithStatsHandler(h stats.Handler) DialOption { return newFuncDialOption(func(o *dialOptions) { - o.copts.StatsHandler = h + if h == nil { + logger.Error("ignoring nil parameter in grpc.WithStatsHandler ClientOption") + // Do not allow a nil stats handler, which would otherwise cause + // panics. + return + } + o.copts.StatsHandlers = append(o.copts.StatsHandlers, h) + }) +} + +// withBinaryLogger returns a DialOption that specifies the binary logger for +// this ClientConn. +func withBinaryLogger(bl binarylog.Logger) DialOption { + return newFuncDialOption(func(o *dialOptions) { + o.binaryLogger = bl }) } @@ -413,7 +456,10 @@ func WithStatsHandler(h stats.Handler) DialOption { // FailOnNonTempDialError only affects the initial dial, and does not do // anything useful unless you are also using WithBlock(). // -// Experimental +// Use of this feature is not recommended. For more information, please see: +// https://github.com/grpc/grpc-go/blob/master/Documentation/anti-patterns.md +// +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -482,8 +528,7 @@ func WithChainStreamInterceptor(interceptors ...StreamClientInterceptor) DialOpt } // WithAuthority returns a DialOption that specifies the value to be used as the -// :authority pseudo-header. This value only works with WithInsecure and has no -// effect if TransportCredentials are present. +// :authority pseudo-header and as the server name in authentication handshake. func WithAuthority(a string) DialOption { return newFuncDialOption(func(o *dialOptions) { o.authority = a @@ -494,11 +539,11 @@ func WithAuthority(a string) DialOption { // current ClientConn's parent. This function is used in nested channel creation // (e.g. grpclb dial). // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. -func WithChannelzParentID(id int64) DialOption { +func WithChannelzParentID(id *channelz.Identifier) DialOption { return newFuncDialOption(func(o *dialOptions) { o.channelzParentID = id }) @@ -519,14 +564,16 @@ func WithDisableServiceConfig() DialOption { // WithDefaultServiceConfig returns a DialOption that configures the default // service config, which will be used in cases where: // -// 1. WithDisableServiceConfig is also used. -// 2. Resolver does not return a service config or if the resolver returns an -// invalid service config. +// 1. WithDisableServiceConfig is also used, or // -// Experimental +// 2. The name resolver does not provide a service config or provides an +// invalid service config. // -// Notice: This API is EXPERIMENTAL and may be changed or removed in a -// later release. +// The parameter s is the JSON representation of the default service config. +// For more information about service configs, see: +// https://github.com/grpc/grpc/blob/master/doc/service_config.md +// For a simple example of usage, see: +// examples/features/load_balancing/client/main.go func WithDefaultServiceConfig(s string) DialOption { return newFuncDialOption(func(o *dialOptions) { o.defaultServiceConfigRawJSON = &s @@ -537,15 +584,6 @@ func WithDefaultServiceConfig(s string) DialOption { // service config enables them. This does not impact transparent retries, which // will happen automatically if no data is written to the wire or if the RPC is // unprocessed by the remote server. -// -// Retry support is currently disabled by default, but will be enabled by -// default in the future. Until then, it may be enabled by setting the -// environment variable "GRPC_GO_RETRY" to "on". -// -// Experimental -// -// Notice: This API is EXPERIMENTAL and may be changed or removed in a -// later release. func WithDisableRetry() DialOption { return newFuncDialOption(func(o *dialOptions) { o.disableRetry = true @@ -563,7 +601,7 @@ func WithMaxHeaderListSize(s uint32) DialOption { // WithDisableHealthCheck disables the LB channel health checking for all // SubConns of this ClientConn. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -585,13 +623,13 @@ func withHealthCheckFunc(f internal.HealthChecker) DialOption { func defaultDialOptions() dialOptions { return dialOptions{ - disableRetry: !envconfig.Retry, healthCheckFunc: internal.HealthCheckFunc, copts: transport.ConnectOptions{ WriteBufferSize: defaultWriteBufSize, ReadBufferSize: defaultReadBufSize, UseProxy: true, }, + recvBufferPool: nopBufferPool{}, } } @@ -611,7 +649,7 @@ func withMinConnectDeadline(f func() time.Duration) DialOption { // resolver.Register. They will be matched against the scheme used for the // current Dial only, and will take precedence over the global registry. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -620,3 +658,44 @@ func WithResolvers(rs ...resolver.Builder) DialOption { o.resolvers = append(o.resolvers, rs...) }) } + +// WithIdleTimeout returns a DialOption that configures an idle timeout for the +// channel. If the channel is idle for the configured timeout, i.e there are no +// ongoing RPCs and no new RPCs are initiated, the channel will enter idle mode +// and as a result the name resolver and load balancer will be shut down. The +// channel will exit idle mode when the Connect() method is called or when an +// RPC is initiated. +// +// By default this feature is disabled, which can also be explicitly configured +// by passing zero to this function. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +func WithIdleTimeout(d time.Duration) DialOption { + return newFuncDialOption(func(o *dialOptions) { + o.idleTimeout = d + }) +} + +// WithRecvBufferPool returns a DialOption that configures the ClientConn +// to use the provided shared buffer pool for parsing incoming messages. Depending +// on the application's workload, this could result in reduced memory allocation. +// +// If you are unsure about how to implement a memory pool but want to utilize one, +// begin with grpc.NewSharedBufferPool. +// +// Note: The shared buffer pool feature will not be active if any of the following +// options are used: WithStatsHandler, EnableTracing, or binary logging. In such +// cases, the shared buffer pool will be ignored. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +func WithRecvBufferPool(bufferPool SharedBufferPool) DialOption { + return newFuncDialOption(func(o *dialOptions) { + o.recvBufferPool = bufferPool + }) +} diff --git a/vendor/google.golang.org/grpc/encoding/encoding.go b/vendor/google.golang.org/grpc/encoding/encoding.go index 6d84f74c..07a58613 100644 --- a/vendor/google.golang.org/grpc/encoding/encoding.go +++ b/vendor/google.golang.org/grpc/encoding/encoding.go @@ -19,7 +19,7 @@ // Package encoding defines the interface for the compressor and codec, and // functions to register and retrieve compressors and codecs. // -// Experimental +// # Experimental // // Notice: This package is EXPERIMENTAL and may be changed or removed in a // later release. @@ -28,6 +28,8 @@ package encoding import ( "io" "strings" + + "google.golang.org/grpc/internal/grpcutil" ) // Identity specifies the optional encoding for uncompressed streams. @@ -73,6 +75,9 @@ var registeredCompressor = make(map[string]Compressor) // registered with the same name, the one registered last will take effect. func RegisterCompressor(c Compressor) { registeredCompressor[c.Name()] = c + if !grpcutil.IsCompressorNameRegistered(c.Name()) { + grpcutil.RegisteredCompressorNames = append(grpcutil.RegisteredCompressorNames, c.Name()) + } } // GetCompressor returns Compressor for the given compressor name. @@ -108,7 +113,7 @@ var registeredCodecs = make(map[string]Codec) // more details. // // NOTE: this function must only be called during initialization time (i.e. in -// an init() function), and is not thread-safe. If multiple Compressors are +// an init() function), and is not thread-safe. If multiple Codecs are // registered with the same name, the one registered last will take effect. func RegisterCodec(codec Codec) { if codec == nil { diff --git a/vendor/google.golang.org/grpc/grpclog/loggerv2.go b/vendor/google.golang.org/grpc/grpclog/loggerv2.go index 4ee33171..5de66e40 100644 --- a/vendor/google.golang.org/grpc/grpclog/loggerv2.go +++ b/vendor/google.golang.org/grpc/grpclog/loggerv2.go @@ -19,11 +19,13 @@ package grpclog import ( + "encoding/json" + "fmt" "io" - "io/ioutil" "log" "os" "strconv" + "strings" "google.golang.org/grpc/internal/grpclog" ) @@ -95,8 +97,9 @@ var severityName = []string{ // loggerT is the default logger used by grpclog. type loggerT struct { - m []*log.Logger - v int + m []*log.Logger + v int + jsonFormat bool } // NewLoggerV2 creates a loggerV2 with the provided writers. @@ -105,27 +108,40 @@ type loggerT struct { // Warning logs will be written to warningW and infoW. // Info logs will be written to infoW. func NewLoggerV2(infoW, warningW, errorW io.Writer) LoggerV2 { - return NewLoggerV2WithVerbosity(infoW, warningW, errorW, 0) + return newLoggerV2WithConfig(infoW, warningW, errorW, loggerV2Config{}) } // NewLoggerV2WithVerbosity creates a loggerV2 with the provided writers and // verbosity level. func NewLoggerV2WithVerbosity(infoW, warningW, errorW io.Writer, v int) LoggerV2 { + return newLoggerV2WithConfig(infoW, warningW, errorW, loggerV2Config{verbose: v}) +} + +type loggerV2Config struct { + verbose int + jsonFormat bool +} + +func newLoggerV2WithConfig(infoW, warningW, errorW io.Writer, c loggerV2Config) LoggerV2 { var m []*log.Logger - m = append(m, log.New(infoW, severityName[infoLog]+": ", log.LstdFlags)) - m = append(m, log.New(io.MultiWriter(infoW, warningW), severityName[warningLog]+": ", log.LstdFlags)) + flag := log.LstdFlags + if c.jsonFormat { + flag = 0 + } + m = append(m, log.New(infoW, "", flag)) + m = append(m, log.New(io.MultiWriter(infoW, warningW), "", flag)) ew := io.MultiWriter(infoW, warningW, errorW) // ew will be used for error and fatal. - m = append(m, log.New(ew, severityName[errorLog]+": ", log.LstdFlags)) - m = append(m, log.New(ew, severityName[fatalLog]+": ", log.LstdFlags)) - return &loggerT{m: m, v: v} + m = append(m, log.New(ew, "", flag)) + m = append(m, log.New(ew, "", flag)) + return &loggerT{m: m, v: c.verbose, jsonFormat: c.jsonFormat} } // newLoggerV2 creates a loggerV2 to be used as default logger. // All logs are written to stderr. func newLoggerV2() LoggerV2 { - errorW := ioutil.Discard - warningW := ioutil.Discard - infoW := ioutil.Discard + errorW := io.Discard + warningW := io.Discard + infoW := io.Discard logLevel := os.Getenv("GRPC_GO_LOG_SEVERITY_LEVEL") switch logLevel { @@ -142,58 +158,79 @@ func newLoggerV2() LoggerV2 { if vl, err := strconv.Atoi(vLevel); err == nil { v = vl } - return NewLoggerV2WithVerbosity(infoW, warningW, errorW, v) + + jsonFormat := strings.EqualFold(os.Getenv("GRPC_GO_LOG_FORMATTER"), "json") + + return newLoggerV2WithConfig(infoW, warningW, errorW, loggerV2Config{ + verbose: v, + jsonFormat: jsonFormat, + }) +} + +func (g *loggerT) output(severity int, s string) { + sevStr := severityName[severity] + if !g.jsonFormat { + g.m[severity].Output(2, fmt.Sprintf("%v: %v", sevStr, s)) + return + } + // TODO: we can also include the logging component, but that needs more + // (API) changes. + b, _ := json.Marshal(map[string]string{ + "severity": sevStr, + "message": s, + }) + g.m[severity].Output(2, string(b)) } func (g *loggerT) Info(args ...interface{}) { - g.m[infoLog].Print(args...) + g.output(infoLog, fmt.Sprint(args...)) } func (g *loggerT) Infoln(args ...interface{}) { - g.m[infoLog].Println(args...) + g.output(infoLog, fmt.Sprintln(args...)) } func (g *loggerT) Infof(format string, args ...interface{}) { - g.m[infoLog].Printf(format, args...) + g.output(infoLog, fmt.Sprintf(format, args...)) } func (g *loggerT) Warning(args ...interface{}) { - g.m[warningLog].Print(args...) + g.output(warningLog, fmt.Sprint(args...)) } func (g *loggerT) Warningln(args ...interface{}) { - g.m[warningLog].Println(args...) + g.output(warningLog, fmt.Sprintln(args...)) } func (g *loggerT) Warningf(format string, args ...interface{}) { - g.m[warningLog].Printf(format, args...) + g.output(warningLog, fmt.Sprintf(format, args...)) } func (g *loggerT) Error(args ...interface{}) { - g.m[errorLog].Print(args...) + g.output(errorLog, fmt.Sprint(args...)) } func (g *loggerT) Errorln(args ...interface{}) { - g.m[errorLog].Println(args...) + g.output(errorLog, fmt.Sprintln(args...)) } func (g *loggerT) Errorf(format string, args ...interface{}) { - g.m[errorLog].Printf(format, args...) + g.output(errorLog, fmt.Sprintf(format, args...)) } func (g *loggerT) Fatal(args ...interface{}) { - g.m[fatalLog].Fatal(args...) - // No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit(). + g.output(fatalLog, fmt.Sprint(args...)) + os.Exit(1) } func (g *loggerT) Fatalln(args ...interface{}) { - g.m[fatalLog].Fatalln(args...) - // No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit(). + g.output(fatalLog, fmt.Sprintln(args...)) + os.Exit(1) } func (g *loggerT) Fatalf(format string, args ...interface{}) { - g.m[fatalLog].Fatalf(format, args...) - // No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit(). + g.output(fatalLog, fmt.Sprintf(format, args...)) + os.Exit(1) } func (g *loggerT) V(l int) bool { @@ -204,18 +241,18 @@ func (g *loggerT) V(l int) bool { // DepthLoggerV2, the below functions will be called with the appropriate stack // depth set for trivial functions the logger may ignore. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. type DepthLoggerV2 interface { LoggerV2 - // InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print. + // InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Println. InfoDepth(depth int, args ...interface{}) - // WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print. + // WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Println. WarningDepth(depth int, args ...interface{}) - // ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print. + // ErrorDepth logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Println. ErrorDepth(depth int, args ...interface{}) - // FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print. + // FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Println. FatalDepth(depth int, args ...interface{}) } diff --git a/vendor/google.golang.org/grpc/idle.go b/vendor/google.golang.org/grpc/idle.go new file mode 100644 index 00000000..dc3dc72f --- /dev/null +++ b/vendor/google.golang.org/grpc/idle.go @@ -0,0 +1,287 @@ +/* + * + * Copyright 2023 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "fmt" + "math" + "sync" + "sync/atomic" + "time" +) + +// For overriding in unit tests. +var timeAfterFunc = func(d time.Duration, f func()) *time.Timer { + return time.AfterFunc(d, f) +} + +// idlenessEnforcer is the functionality provided by grpc.ClientConn to enter +// and exit from idle mode. +type idlenessEnforcer interface { + exitIdleMode() error + enterIdleMode() error +} + +// idlenessManager defines the functionality required to track RPC activity on a +// channel. +type idlenessManager interface { + onCallBegin() error + onCallEnd() + close() +} + +type noopIdlenessManager struct{} + +func (noopIdlenessManager) onCallBegin() error { return nil } +func (noopIdlenessManager) onCallEnd() {} +func (noopIdlenessManager) close() {} + +// idlenessManagerImpl implements the idlenessManager interface. It uses atomic +// operations to synchronize access to shared state and a mutex to guarantee +// mutual exclusion in a critical section. +type idlenessManagerImpl struct { + // State accessed atomically. + lastCallEndTime int64 // Unix timestamp in nanos; time when the most recent RPC completed. + activeCallsCount int32 // Count of active RPCs; -math.MaxInt32 means channel is idle or is trying to get there. + activeSinceLastTimerCheck int32 // Boolean; True if there was an RPC since the last timer callback. + closed int32 // Boolean; True when the manager is closed. + + // Can be accessed without atomics or mutex since these are set at creation + // time and read-only after that. + enforcer idlenessEnforcer // Functionality provided by grpc.ClientConn. + timeout int64 // Idle timeout duration nanos stored as an int64. + + // idleMu is used to guarantee mutual exclusion in two scenarios: + // - Opposing intentions: + // - a: Idle timeout has fired and handleIdleTimeout() is trying to put + // the channel in idle mode because the channel has been inactive. + // - b: At the same time an RPC is made on the channel, and onCallBegin() + // is trying to prevent the channel from going idle. + // - Competing intentions: + // - The channel is in idle mode and there are multiple RPCs starting at + // the same time, all trying to move the channel out of idle. Only one + // of them should succeed in doing so, while the other RPCs should + // piggyback on the first one and be successfully handled. + idleMu sync.RWMutex + actuallyIdle bool + timer *time.Timer +} + +// newIdlenessManager creates a new idleness manager implementation for the +// given idle timeout. +func newIdlenessManager(enforcer idlenessEnforcer, idleTimeout time.Duration) idlenessManager { + if idleTimeout == 0 { + return noopIdlenessManager{} + } + + i := &idlenessManagerImpl{ + enforcer: enforcer, + timeout: int64(idleTimeout), + } + i.timer = timeAfterFunc(idleTimeout, i.handleIdleTimeout) + return i +} + +// resetIdleTimer resets the idle timer to the given duration. This method +// should only be called from the timer callback. +func (i *idlenessManagerImpl) resetIdleTimer(d time.Duration) { + i.idleMu.Lock() + defer i.idleMu.Unlock() + + if i.timer == nil { + // Only close sets timer to nil. We are done. + return + } + + // It is safe to ignore the return value from Reset() because this method is + // only ever called from the timer callback, which means the timer has + // already fired. + i.timer.Reset(d) +} + +// handleIdleTimeout is the timer callback that is invoked upon expiry of the +// configured idle timeout. The channel is considered inactive if there are no +// ongoing calls and no RPC activity since the last time the timer fired. +func (i *idlenessManagerImpl) handleIdleTimeout() { + if i.isClosed() { + return + } + + if atomic.LoadInt32(&i.activeCallsCount) > 0 { + i.resetIdleTimer(time.Duration(i.timeout)) + return + } + + // There has been activity on the channel since we last got here. Reset the + // timer and return. + if atomic.LoadInt32(&i.activeSinceLastTimerCheck) == 1 { + // Set the timer to fire after a duration of idle timeout, calculated + // from the time the most recent RPC completed. + atomic.StoreInt32(&i.activeSinceLastTimerCheck, 0) + i.resetIdleTimer(time.Duration(atomic.LoadInt64(&i.lastCallEndTime) + i.timeout - time.Now().UnixNano())) + return + } + + // This CAS operation is extremely likely to succeed given that there has + // been no activity since the last time we were here. Setting the + // activeCallsCount to -math.MaxInt32 indicates to onCallBegin() that the + // channel is either in idle mode or is trying to get there. + if !atomic.CompareAndSwapInt32(&i.activeCallsCount, 0, -math.MaxInt32) { + // This CAS operation can fail if an RPC started after we checked for + // activity at the top of this method, or one was ongoing from before + // the last time we were here. In both case, reset the timer and return. + i.resetIdleTimer(time.Duration(i.timeout)) + return + } + + // Now that we've set the active calls count to -math.MaxInt32, it's time to + // actually move to idle mode. + if i.tryEnterIdleMode() { + // Successfully entered idle mode. No timer needed until we exit idle. + return + } + + // Failed to enter idle mode due to a concurrent RPC that kept the channel + // active, or because of an error from the channel. Undo the attempt to + // enter idle, and reset the timer to try again later. + atomic.AddInt32(&i.activeCallsCount, math.MaxInt32) + i.resetIdleTimer(time.Duration(i.timeout)) +} + +// tryEnterIdleMode instructs the channel to enter idle mode. But before +// that, it performs a last minute check to ensure that no new RPC has come in, +// making the channel active. +// +// Return value indicates whether or not the channel moved to idle mode. +// +// Holds idleMu which ensures mutual exclusion with exitIdleMode. +func (i *idlenessManagerImpl) tryEnterIdleMode() bool { + i.idleMu.Lock() + defer i.idleMu.Unlock() + + if atomic.LoadInt32(&i.activeCallsCount) != -math.MaxInt32 { + // We raced and lost to a new RPC. Very rare, but stop entering idle. + return false + } + if atomic.LoadInt32(&i.activeSinceLastTimerCheck) == 1 { + // An very short RPC could have come in (and also finished) after we + // checked for calls count and activity in handleIdleTimeout(), but + // before the CAS operation. So, we need to check for activity again. + return false + } + + // No new RPCs have come in since we last set the active calls count value + // -math.MaxInt32 in the timer callback. And since we have the lock, it is + // safe to enter idle mode now. + if err := i.enforcer.enterIdleMode(); err != nil { + logger.Errorf("Failed to enter idle mode: %v", err) + return false + } + + // Successfully entered idle mode. + i.actuallyIdle = true + return true +} + +// onCallBegin is invoked at the start of every RPC. +func (i *idlenessManagerImpl) onCallBegin() error { + if i.isClosed() { + return nil + } + + if atomic.AddInt32(&i.activeCallsCount, 1) > 0 { + // Channel is not idle now. Set the activity bit and allow the call. + atomic.StoreInt32(&i.activeSinceLastTimerCheck, 1) + return nil + } + + // Channel is either in idle mode or is in the process of moving to idle + // mode. Attempt to exit idle mode to allow this RPC. + if err := i.exitIdleMode(); err != nil { + // Undo the increment to calls count, and return an error causing the + // RPC to fail. + atomic.AddInt32(&i.activeCallsCount, -1) + return err + } + + atomic.StoreInt32(&i.activeSinceLastTimerCheck, 1) + return nil +} + +// exitIdleMode instructs the channel to exit idle mode. +// +// Holds idleMu which ensures mutual exclusion with tryEnterIdleMode. +func (i *idlenessManagerImpl) exitIdleMode() error { + i.idleMu.Lock() + defer i.idleMu.Unlock() + + if !i.actuallyIdle { + // This can happen in two scenarios: + // - handleIdleTimeout() set the calls count to -math.MaxInt32 and called + // tryEnterIdleMode(). But before the latter could grab the lock, an RPC + // came in and onCallBegin() noticed that the calls count is negative. + // - Channel is in idle mode, and multiple new RPCs come in at the same + // time, all of them notice a negative calls count in onCallBegin and get + // here. The first one to get the lock would got the channel to exit idle. + // + // Either way, nothing to do here. + return nil + } + + if err := i.enforcer.exitIdleMode(); err != nil { + return fmt.Errorf("channel failed to exit idle mode: %v", err) + } + + // Undo the idle entry process. This also respects any new RPC attempts. + atomic.AddInt32(&i.activeCallsCount, math.MaxInt32) + i.actuallyIdle = false + + // Start a new timer to fire after the configured idle timeout. + i.timer = timeAfterFunc(time.Duration(i.timeout), i.handleIdleTimeout) + return nil +} + +// onCallEnd is invoked at the end of every RPC. +func (i *idlenessManagerImpl) onCallEnd() { + if i.isClosed() { + return + } + + // Record the time at which the most recent call finished. + atomic.StoreInt64(&i.lastCallEndTime, time.Now().UnixNano()) + + // Decrement the active calls count. This count can temporarily go negative + // when the timer callback is in the process of moving the channel to idle + // mode, but one or more RPCs come in and complete before the timer callback + // can get done with the process of moving to idle mode. + atomic.AddInt32(&i.activeCallsCount, -1) +} + +func (i *idlenessManagerImpl) isClosed() bool { + return atomic.LoadInt32(&i.closed) == 1 +} + +func (i *idlenessManagerImpl) close() { + atomic.StoreInt32(&i.closed, 1) + + i.idleMu.Lock() + i.timer.Stop() + i.timer = nil + i.idleMu.Unlock() +} diff --git a/vendor/google.golang.org/grpc/install_gae.sh b/vendor/google.golang.org/grpc/install_gae.sh deleted file mode 100644 index 15ff9fac..00000000 --- a/vendor/google.golang.org/grpc/install_gae.sh +++ /dev/null @@ -1,6 +0,0 @@ -#!/bin/bash - -TMP=$(mktemp -d /tmp/sdk.XXX) \ -&& curl -o $TMP.zip "https://storage.googleapis.com/appengine-sdks/featured/go_appengine_sdk_linux_amd64-1.9.68.zip" \ -&& unzip -q $TMP.zip -d $TMP \ -&& export PATH="$PATH:$TMP/go_appengine" \ No newline at end of file diff --git a/vendor/google.golang.org/grpc/interceptor.go b/vendor/google.golang.org/grpc/interceptor.go index 668e0adc..bb96ef57 100644 --- a/vendor/google.golang.org/grpc/interceptor.go +++ b/vendor/google.golang.org/grpc/interceptor.go @@ -72,9 +72,12 @@ type UnaryServerInfo struct { } // UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal -// execution of a unary RPC. If a UnaryHandler returns an error, it should be produced by the -// status package, or else gRPC will use codes.Unknown as the status code and err.Error() as -// the status message of the RPC. +// execution of a unary RPC. +// +// If a UnaryHandler returns an error, it should either be produced by the +// status package, or be one of the context errors. Otherwise, gRPC will use +// codes.Unknown as the status code and err.Error() as the status message of the +// RPC. type UnaryHandler func(ctx context.Context, req interface{}) (interface{}, error) // UnaryServerInterceptor provides a hook to intercept the execution of a unary RPC on the server. info diff --git a/vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go b/vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go new file mode 100644 index 00000000..08666f62 --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go @@ -0,0 +1,384 @@ +/* + * + * Copyright 2022 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package gracefulswitch implements a graceful switch load balancer. +package gracefulswitch + +import ( + "errors" + "fmt" + "sync" + + "google.golang.org/grpc/balancer" + "google.golang.org/grpc/balancer/base" + "google.golang.org/grpc/connectivity" + "google.golang.org/grpc/resolver" +) + +var errBalancerClosed = errors.New("gracefulSwitchBalancer is closed") +var _ balancer.Balancer = (*Balancer)(nil) + +// NewBalancer returns a graceful switch Balancer. +func NewBalancer(cc balancer.ClientConn, opts balancer.BuildOptions) *Balancer { + return &Balancer{ + cc: cc, + bOpts: opts, + } +} + +// Balancer is a utility to gracefully switch from one balancer to +// a new balancer. It implements the balancer.Balancer interface. +type Balancer struct { + bOpts balancer.BuildOptions + cc balancer.ClientConn + + // mu protects the following fields and all fields within balancerCurrent + // and balancerPending. mu does not need to be held when calling into the + // child balancers, as all calls into these children happen only as a direct + // result of a call into the gracefulSwitchBalancer, which are also + // guaranteed to be synchronous. There is one exception: an UpdateState call + // from a child balancer when current and pending are populated can lead to + // calling Close() on the current. To prevent that racing with an + // UpdateSubConnState from the channel, we hold currentMu during Close and + // UpdateSubConnState calls. + mu sync.Mutex + balancerCurrent *balancerWrapper + balancerPending *balancerWrapper + closed bool // set to true when this balancer is closed + + // currentMu must be locked before mu. This mutex guards against this + // sequence of events: UpdateSubConnState() called, finds the + // balancerCurrent, gives up lock, updateState comes in, causes Close() on + // balancerCurrent before the UpdateSubConnState is called on the + // balancerCurrent. + currentMu sync.Mutex +} + +// swap swaps out the current lb with the pending lb and updates the ClientConn. +// The caller must hold gsb.mu. +func (gsb *Balancer) swap() { + gsb.cc.UpdateState(gsb.balancerPending.lastState) + cur := gsb.balancerCurrent + gsb.balancerCurrent = gsb.balancerPending + gsb.balancerPending = nil + go func() { + gsb.currentMu.Lock() + defer gsb.currentMu.Unlock() + cur.Close() + }() +} + +// Helper function that checks if the balancer passed in is current or pending. +// The caller must hold gsb.mu. +func (gsb *Balancer) balancerCurrentOrPending(bw *balancerWrapper) bool { + return bw == gsb.balancerCurrent || bw == gsb.balancerPending +} + +// SwitchTo initializes the graceful switch process, which completes based on +// connectivity state changes on the current/pending balancer. Thus, the switch +// process is not complete when this method returns. This method must be called +// synchronously alongside the rest of the balancer.Balancer methods this +// Graceful Switch Balancer implements. +func (gsb *Balancer) SwitchTo(builder balancer.Builder) error { + gsb.mu.Lock() + if gsb.closed { + gsb.mu.Unlock() + return errBalancerClosed + } + bw := &balancerWrapper{ + gsb: gsb, + lastState: balancer.State{ + ConnectivityState: connectivity.Connecting, + Picker: base.NewErrPicker(balancer.ErrNoSubConnAvailable), + }, + subconns: make(map[balancer.SubConn]bool), + } + balToClose := gsb.balancerPending // nil if there is no pending balancer + if gsb.balancerCurrent == nil { + gsb.balancerCurrent = bw + } else { + gsb.balancerPending = bw + } + gsb.mu.Unlock() + balToClose.Close() + // This function takes a builder instead of a balancer because builder.Build + // can call back inline, and this utility needs to handle the callbacks. + newBalancer := builder.Build(bw, gsb.bOpts) + if newBalancer == nil { + // This is illegal and should never happen; we clear the balancerWrapper + // we were constructing if it happens to avoid a potential panic. + gsb.mu.Lock() + if gsb.balancerPending != nil { + gsb.balancerPending = nil + } else { + gsb.balancerCurrent = nil + } + gsb.mu.Unlock() + return balancer.ErrBadResolverState + } + + // This write doesn't need to take gsb.mu because this field never gets read + // or written to on any calls from the current or pending. Calls from grpc + // to this balancer are guaranteed to be called synchronously, so this + // bw.Balancer field will never be forwarded to until this SwitchTo() + // function returns. + bw.Balancer = newBalancer + return nil +} + +// Returns nil if the graceful switch balancer is closed. +func (gsb *Balancer) latestBalancer() *balancerWrapper { + gsb.mu.Lock() + defer gsb.mu.Unlock() + if gsb.balancerPending != nil { + return gsb.balancerPending + } + return gsb.balancerCurrent +} + +// UpdateClientConnState forwards the update to the latest balancer created. +func (gsb *Balancer) UpdateClientConnState(state balancer.ClientConnState) error { + // The resolver data is only relevant to the most recent LB Policy. + balToUpdate := gsb.latestBalancer() + if balToUpdate == nil { + return errBalancerClosed + } + // Perform this call without gsb.mu to prevent deadlocks if the child calls + // back into the channel. The latest balancer can never be closed during a + // call from the channel, even without gsb.mu held. + return balToUpdate.UpdateClientConnState(state) +} + +// ResolverError forwards the error to the latest balancer created. +func (gsb *Balancer) ResolverError(err error) { + // The resolver data is only relevant to the most recent LB Policy. + balToUpdate := gsb.latestBalancer() + if balToUpdate == nil { + return + } + // Perform this call without gsb.mu to prevent deadlocks if the child calls + // back into the channel. The latest balancer can never be closed during a + // call from the channel, even without gsb.mu held. + balToUpdate.ResolverError(err) +} + +// ExitIdle forwards the call to the latest balancer created. +// +// If the latest balancer does not support ExitIdle, the subConns are +// re-connected to manually. +func (gsb *Balancer) ExitIdle() { + balToUpdate := gsb.latestBalancer() + if balToUpdate == nil { + return + } + // There is no need to protect this read with a mutex, as the write to the + // Balancer field happens in SwitchTo, which completes before this can be + // called. + if ei, ok := balToUpdate.Balancer.(balancer.ExitIdler); ok { + ei.ExitIdle() + return + } + gsb.mu.Lock() + defer gsb.mu.Unlock() + for sc := range balToUpdate.subconns { + sc.Connect() + } +} + +// UpdateSubConnState forwards the update to the appropriate child. +func (gsb *Balancer) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) { + gsb.currentMu.Lock() + defer gsb.currentMu.Unlock() + gsb.mu.Lock() + // Forward update to the appropriate child. Even if there is a pending + // balancer, the current balancer should continue to get SubConn updates to + // maintain the proper state while the pending is still connecting. + var balToUpdate *balancerWrapper + if gsb.balancerCurrent != nil && gsb.balancerCurrent.subconns[sc] { + balToUpdate = gsb.balancerCurrent + } else if gsb.balancerPending != nil && gsb.balancerPending.subconns[sc] { + balToUpdate = gsb.balancerPending + } + gsb.mu.Unlock() + if balToUpdate == nil { + // SubConn belonged to a stale lb policy that has not yet fully closed, + // or the balancer was already closed. + return + } + balToUpdate.UpdateSubConnState(sc, state) +} + +// Close closes any active child balancers. +func (gsb *Balancer) Close() { + gsb.mu.Lock() + gsb.closed = true + currentBalancerToClose := gsb.balancerCurrent + gsb.balancerCurrent = nil + pendingBalancerToClose := gsb.balancerPending + gsb.balancerPending = nil + gsb.mu.Unlock() + + currentBalancerToClose.Close() + pendingBalancerToClose.Close() +} + +// balancerWrapper wraps a balancer.Balancer, and overrides some Balancer +// methods to help cleanup SubConns created by the wrapped balancer. +// +// It implements the balancer.ClientConn interface and is passed down in that +// capacity to the wrapped balancer. It maintains a set of subConns created by +// the wrapped balancer and calls from the latter to create/update/remove +// SubConns update this set before being forwarded to the parent ClientConn. +// State updates from the wrapped balancer can result in invocation of the +// graceful switch logic. +type balancerWrapper struct { + balancer.Balancer + gsb *Balancer + + lastState balancer.State + subconns map[balancer.SubConn]bool // subconns created by this balancer +} + +func (bw *balancerWrapper) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) { + if state.ConnectivityState == connectivity.Shutdown { + bw.gsb.mu.Lock() + delete(bw.subconns, sc) + bw.gsb.mu.Unlock() + } + // There is no need to protect this read with a mutex, as the write to the + // Balancer field happens in SwitchTo, which completes before this can be + // called. + bw.Balancer.UpdateSubConnState(sc, state) +} + +// Close closes the underlying LB policy and removes the subconns it created. bw +// must not be referenced via balancerCurrent or balancerPending in gsb when +// called. gsb.mu must not be held. Does not panic with a nil receiver. +func (bw *balancerWrapper) Close() { + // before Close is called. + if bw == nil { + return + } + // There is no need to protect this read with a mutex, as Close() is + // impossible to be called concurrently with the write in SwitchTo(). The + // callsites of Close() for this balancer in Graceful Switch Balancer will + // never be called until SwitchTo() returns. + bw.Balancer.Close() + bw.gsb.mu.Lock() + for sc := range bw.subconns { + bw.gsb.cc.RemoveSubConn(sc) + } + bw.gsb.mu.Unlock() +} + +func (bw *balancerWrapper) UpdateState(state balancer.State) { + // Hold the mutex for this entire call to ensure it cannot occur + // concurrently with other updateState() calls. This causes updates to + // lastState and calls to cc.UpdateState to happen atomically. + bw.gsb.mu.Lock() + defer bw.gsb.mu.Unlock() + bw.lastState = state + + if !bw.gsb.balancerCurrentOrPending(bw) { + return + } + + if bw == bw.gsb.balancerCurrent { + // In the case that the current balancer exits READY, and there is a pending + // balancer, you can forward the pending balancer's cached State up to + // ClientConn and swap the pending into the current. This is because there + // is no reason to gracefully switch from and keep using the old policy as + // the ClientConn is not connected to any backends. + if state.ConnectivityState != connectivity.Ready && bw.gsb.balancerPending != nil { + bw.gsb.swap() + return + } + // Even if there is a pending balancer waiting to be gracefully switched to, + // continue to forward current balancer updates to the Client Conn. Ignoring + // state + picker from the current would cause undefined behavior/cause the + // system to behave incorrectly from the current LB policies perspective. + // Also, the current LB is still being used by grpc to choose SubConns per + // RPC, and thus should use the most updated form of the current balancer. + bw.gsb.cc.UpdateState(state) + return + } + // This method is now dealing with a state update from the pending balancer. + // If the current balancer is currently in a state other than READY, the new + // policy can be swapped into place immediately. This is because there is no + // reason to gracefully switch from and keep using the old policy as the + // ClientConn is not connected to any backends. + if state.ConnectivityState != connectivity.Connecting || bw.gsb.balancerCurrent.lastState.ConnectivityState != connectivity.Ready { + bw.gsb.swap() + } +} + +func (bw *balancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) { + bw.gsb.mu.Lock() + if !bw.gsb.balancerCurrentOrPending(bw) { + bw.gsb.mu.Unlock() + return nil, fmt.Errorf("%T at address %p that called NewSubConn is deleted", bw, bw) + } + bw.gsb.mu.Unlock() + + sc, err := bw.gsb.cc.NewSubConn(addrs, opts) + if err != nil { + return nil, err + } + bw.gsb.mu.Lock() + if !bw.gsb.balancerCurrentOrPending(bw) { // balancer was closed during this call + bw.gsb.cc.RemoveSubConn(sc) + bw.gsb.mu.Unlock() + return nil, fmt.Errorf("%T at address %p that called NewSubConn is deleted", bw, bw) + } + bw.subconns[sc] = true + bw.gsb.mu.Unlock() + return sc, nil +} + +func (bw *balancerWrapper) ResolveNow(opts resolver.ResolveNowOptions) { + // Ignore ResolveNow requests from anything other than the most recent + // balancer, because older balancers were already removed from the config. + if bw != bw.gsb.latestBalancer() { + return + } + bw.gsb.cc.ResolveNow(opts) +} + +func (bw *balancerWrapper) RemoveSubConn(sc balancer.SubConn) { + bw.gsb.mu.Lock() + if !bw.gsb.balancerCurrentOrPending(bw) { + bw.gsb.mu.Unlock() + return + } + bw.gsb.mu.Unlock() + bw.gsb.cc.RemoveSubConn(sc) +} + +func (bw *balancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver.Address) { + bw.gsb.mu.Lock() + if !bw.gsb.balancerCurrentOrPending(bw) { + bw.gsb.mu.Unlock() + return + } + bw.gsb.mu.Unlock() + bw.gsb.cc.UpdateAddresses(sc, addrs) +} + +func (bw *balancerWrapper) Target() string { + return bw.gsb.cc.Target() +} diff --git a/vendor/google.golang.org/grpc/internal/binarylog/binarylog.go b/vendor/google.golang.org/grpc/internal/binarylog/binarylog.go index 5cc3aedd..755fdebc 100644 --- a/vendor/google.golang.org/grpc/internal/binarylog/binarylog.go +++ b/vendor/google.golang.org/grpc/internal/binarylog/binarylog.go @@ -28,38 +28,48 @@ import ( "google.golang.org/grpc/internal/grpcutil" ) -// Logger is the global binary logger. It can be used to get binary logger for -// each method. +var grpclogLogger = grpclog.Component("binarylog") + +// Logger specifies MethodLoggers for method names with a Log call that +// takes a context. +// +// This is used in the 1.0 release of gcp/observability, and thus must not be +// deleted or changed. type Logger interface { - getMethodLogger(methodName string) *MethodLogger + GetMethodLogger(methodName string) MethodLogger } // binLogger is the global binary logger for the binary. One of this should be // built at init time from the configuration (environment variable or flags). // -// It is used to get a methodLogger for each individual method. +// It is used to get a MethodLogger for each individual method. var binLogger Logger -var grpclogLogger = grpclog.Component("binarylog") - -// SetLogger sets the binarg logger. +// SetLogger sets the binary logger. // // Only call this at init time. func SetLogger(l Logger) { binLogger = l } -// GetMethodLogger returns the methodLogger for the given methodName. +// GetLogger gets the binary logger. +// +// Only call this at init time. +func GetLogger() Logger { + return binLogger +} + +// GetMethodLogger returns the MethodLogger for the given methodName. // // methodName should be in the format of "/service/method". // -// Each methodLogger returned by this method is a new instance. This is to +// Each MethodLogger returned by this method is a new instance. This is to // generate sequence id within the call. -func GetMethodLogger(methodName string) *MethodLogger { +func GetMethodLogger(methodName string) MethodLogger { if binLogger == nil { return nil } - return binLogger.getMethodLogger(methodName) + return binLogger.GetMethodLogger(methodName) } func init() { @@ -68,17 +78,29 @@ func init() { binLogger = NewLoggerFromConfigString(configStr) } -type methodLoggerConfig struct { +// MethodLoggerConfig contains the setting for logging behavior of a method +// logger. Currently, it contains the max length of header and message. +type MethodLoggerConfig struct { // Max length of header and message. - hdr, msg uint64 + Header, Message uint64 +} + +// LoggerConfig contains the config for loggers to create method loggers. +type LoggerConfig struct { + All *MethodLoggerConfig + Services map[string]*MethodLoggerConfig + Methods map[string]*MethodLoggerConfig + + Blacklist map[string]struct{} } type logger struct { - all *methodLoggerConfig - services map[string]*methodLoggerConfig - methods map[string]*methodLoggerConfig + config LoggerConfig +} - blacklist map[string]struct{} +// NewLoggerFromConfig builds a logger with the given LoggerConfig. +func NewLoggerFromConfig(config LoggerConfig) Logger { + return &logger{config: config} } // newEmptyLogger creates an empty logger. The map fields need to be filled in @@ -88,83 +110,83 @@ func newEmptyLogger() *logger { } // Set method logger for "*". -func (l *logger) setDefaultMethodLogger(ml *methodLoggerConfig) error { - if l.all != nil { +func (l *logger) setDefaultMethodLogger(ml *MethodLoggerConfig) error { + if l.config.All != nil { return fmt.Errorf("conflicting global rules found") } - l.all = ml + l.config.All = ml return nil } // Set method logger for "service/*". // -// New methodLogger with same service overrides the old one. -func (l *logger) setServiceMethodLogger(service string, ml *methodLoggerConfig) error { - if _, ok := l.services[service]; ok { +// New MethodLogger with same service overrides the old one. +func (l *logger) setServiceMethodLogger(service string, ml *MethodLoggerConfig) error { + if _, ok := l.config.Services[service]; ok { return fmt.Errorf("conflicting service rules for service %v found", service) } - if l.services == nil { - l.services = make(map[string]*methodLoggerConfig) + if l.config.Services == nil { + l.config.Services = make(map[string]*MethodLoggerConfig) } - l.services[service] = ml + l.config.Services[service] = ml return nil } // Set method logger for "service/method". // -// New methodLogger with same method overrides the old one. -func (l *logger) setMethodMethodLogger(method string, ml *methodLoggerConfig) error { - if _, ok := l.blacklist[method]; ok { +// New MethodLogger with same method overrides the old one. +func (l *logger) setMethodMethodLogger(method string, ml *MethodLoggerConfig) error { + if _, ok := l.config.Blacklist[method]; ok { return fmt.Errorf("conflicting blacklist rules for method %v found", method) } - if _, ok := l.methods[method]; ok { + if _, ok := l.config.Methods[method]; ok { return fmt.Errorf("conflicting method rules for method %v found", method) } - if l.methods == nil { - l.methods = make(map[string]*methodLoggerConfig) + if l.config.Methods == nil { + l.config.Methods = make(map[string]*MethodLoggerConfig) } - l.methods[method] = ml + l.config.Methods[method] = ml return nil } // Set blacklist method for "-service/method". func (l *logger) setBlacklist(method string) error { - if _, ok := l.blacklist[method]; ok { + if _, ok := l.config.Blacklist[method]; ok { return fmt.Errorf("conflicting blacklist rules for method %v found", method) } - if _, ok := l.methods[method]; ok { + if _, ok := l.config.Methods[method]; ok { return fmt.Errorf("conflicting method rules for method %v found", method) } - if l.blacklist == nil { - l.blacklist = make(map[string]struct{}) + if l.config.Blacklist == nil { + l.config.Blacklist = make(map[string]struct{}) } - l.blacklist[method] = struct{}{} + l.config.Blacklist[method] = struct{}{} return nil } -// getMethodLogger returns the methodLogger for the given methodName. +// getMethodLogger returns the MethodLogger for the given methodName. // // methodName should be in the format of "/service/method". // -// Each methodLogger returned by this method is a new instance. This is to +// Each MethodLogger returned by this method is a new instance. This is to // generate sequence id within the call. -func (l *logger) getMethodLogger(methodName string) *MethodLogger { +func (l *logger) GetMethodLogger(methodName string) MethodLogger { s, m, err := grpcutil.ParseMethod(methodName) if err != nil { grpclogLogger.Infof("binarylogging: failed to parse %q: %v", methodName, err) return nil } - if ml, ok := l.methods[s+"/"+m]; ok { - return newMethodLogger(ml.hdr, ml.msg) + if ml, ok := l.config.Methods[s+"/"+m]; ok { + return NewTruncatingMethodLogger(ml.Header, ml.Message) } - if _, ok := l.blacklist[s+"/"+m]; ok { + if _, ok := l.config.Blacklist[s+"/"+m]; ok { return nil } - if ml, ok := l.services[s]; ok { - return newMethodLogger(ml.hdr, ml.msg) + if ml, ok := l.config.Services[s]; ok { + return NewTruncatingMethodLogger(ml.Header, ml.Message) } - if l.all == nil { + if l.config.All == nil { return nil } - return newMethodLogger(l.all.hdr, l.all.msg) + return NewTruncatingMethodLogger(l.config.All.Header, l.config.All.Message) } diff --git a/vendor/google.golang.org/grpc/internal/binarylog/env_config.go b/vendor/google.golang.org/grpc/internal/binarylog/env_config.go index d8f4e760..f9e80e27 100644 --- a/vendor/google.golang.org/grpc/internal/binarylog/env_config.go +++ b/vendor/google.golang.org/grpc/internal/binarylog/env_config.go @@ -30,15 +30,15 @@ import ( // to build a new logger and assign it to binarylog.Logger. // // Example filter config strings: -// - "" Nothing will be logged -// - "*" All headers and messages will be fully logged. -// - "*{h}" Only headers will be logged. -// - "*{m:256}" Only the first 256 bytes of each message will be logged. -// - "Foo/*" Logs every method in service Foo -// - "Foo/*,-Foo/Bar" Logs every method in service Foo except method /Foo/Bar -// - "Foo/*,Foo/Bar{m:256}" Logs the first 256 bytes of each message in method -// /Foo/Bar, logs all headers and messages in every other method in service -// Foo. +// - "" Nothing will be logged +// - "*" All headers and messages will be fully logged. +// - "*{h}" Only headers will be logged. +// - "*{m:256}" Only the first 256 bytes of each message will be logged. +// - "Foo/*" Logs every method in service Foo +// - "Foo/*,-Foo/Bar" Logs every method in service Foo except method /Foo/Bar +// - "Foo/*,Foo/Bar{m:256}" Logs the first 256 bytes of each message in method +// /Foo/Bar, logs all headers and messages in every other method in service +// Foo. // // If two configs exist for one certain method or service, the one specified // later overrides the previous config. @@ -57,7 +57,7 @@ func NewLoggerFromConfigString(s string) Logger { return l } -// fillMethodLoggerWithConfigString parses config, creates methodLogger and adds +// fillMethodLoggerWithConfigString parses config, creates TruncatingMethodLogger and adds // it to the right map in the logger. func (l *logger) fillMethodLoggerWithConfigString(config string) error { // "" is invalid. @@ -89,7 +89,7 @@ func (l *logger) fillMethodLoggerWithConfigString(config string) error { if err != nil { return fmt.Errorf("invalid config: %q, %v", config, err) } - if err := l.setDefaultMethodLogger(&methodLoggerConfig{hdr: hdr, msg: msg}); err != nil { + if err := l.setDefaultMethodLogger(&MethodLoggerConfig{Header: hdr, Message: msg}); err != nil { return fmt.Errorf("invalid config: %v", err) } return nil @@ -104,11 +104,11 @@ func (l *logger) fillMethodLoggerWithConfigString(config string) error { return fmt.Errorf("invalid header/message length config: %q, %v", suffix, err) } if m == "*" { - if err := l.setServiceMethodLogger(s, &methodLoggerConfig{hdr: hdr, msg: msg}); err != nil { + if err := l.setServiceMethodLogger(s, &MethodLoggerConfig{Header: hdr, Message: msg}); err != nil { return fmt.Errorf("invalid config: %v", err) } } else { - if err := l.setMethodMethodLogger(s+"/"+m, &methodLoggerConfig{hdr: hdr, msg: msg}); err != nil { + if err := l.setMethodMethodLogger(s+"/"+m, &MethodLoggerConfig{Header: hdr, Message: msg}); err != nil { return fmt.Errorf("invalid config: %v", err) } } diff --git a/vendor/google.golang.org/grpc/internal/binarylog/method_logger.go b/vendor/google.golang.org/grpc/internal/binarylog/method_logger.go index 0cdb4183..6c3f6322 100644 --- a/vendor/google.golang.org/grpc/internal/binarylog/method_logger.go +++ b/vendor/google.golang.org/grpc/internal/binarylog/method_logger.go @@ -19,6 +19,7 @@ package binarylog import ( + "context" "net" "strings" "sync/atomic" @@ -26,7 +27,7 @@ import ( "github.com/golang/protobuf/proto" "github.com/golang/protobuf/ptypes" - pb "google.golang.org/grpc/binarylog/grpc_binarylog_v1" + binlogpb "google.golang.org/grpc/binarylog/grpc_binarylog_v1" "google.golang.org/grpc/metadata" "google.golang.org/grpc/status" ) @@ -48,7 +49,16 @@ func (g *callIDGenerator) reset() { var idGen callIDGenerator // MethodLogger is the sub-logger for each method. -type MethodLogger struct { +// +// This is used in the 1.0 release of gcp/observability, and thus must not be +// deleted or changed. +type MethodLogger interface { + Log(context.Context, LogEntryConfig) +} + +// TruncatingMethodLogger is a method logger that truncates headers and messages +// based on configured fields. +type TruncatingMethodLogger struct { headerMaxLen, messageMaxLen uint64 callID uint64 @@ -57,8 +67,12 @@ type MethodLogger struct { sink Sink // TODO(blog): make this plugable. } -func newMethodLogger(h, m uint64) *MethodLogger { - return &MethodLogger{ +// NewTruncatingMethodLogger returns a new truncating method logger. +// +// This is used in the 1.0 release of gcp/observability, and thus must not be +// deleted or changed. +func NewTruncatingMethodLogger(h, m uint64) *TruncatingMethodLogger { + return &TruncatingMethodLogger{ headerMaxLen: h, messageMaxLen: m, @@ -69,8 +83,10 @@ func newMethodLogger(h, m uint64) *MethodLogger { } } -// Log creates a proto binary log entry, and logs it to the sink. -func (ml *MethodLogger) Log(c LogEntryConfig) { +// Build is an internal only method for building the proto message out of the +// input event. It's made public to enable other library to reuse as much logic +// in TruncatingMethodLogger as possible. +func (ml *TruncatingMethodLogger) Build(c LogEntryConfig) *binlogpb.GrpcLogEntry { m := c.toProto() timestamp, _ := ptypes.TimestampProto(time.Now()) m.Timestamp = timestamp @@ -78,18 +94,22 @@ func (ml *MethodLogger) Log(c LogEntryConfig) { m.SequenceIdWithinCall = ml.idWithinCallGen.next() switch pay := m.Payload.(type) { - case *pb.GrpcLogEntry_ClientHeader: + case *binlogpb.GrpcLogEntry_ClientHeader: m.PayloadTruncated = ml.truncateMetadata(pay.ClientHeader.GetMetadata()) - case *pb.GrpcLogEntry_ServerHeader: + case *binlogpb.GrpcLogEntry_ServerHeader: m.PayloadTruncated = ml.truncateMetadata(pay.ServerHeader.GetMetadata()) - case *pb.GrpcLogEntry_Message: + case *binlogpb.GrpcLogEntry_Message: m.PayloadTruncated = ml.truncateMessage(pay.Message) } + return m +} - ml.sink.Write(m) +// Log creates a proto binary log entry, and logs it to the sink. +func (ml *TruncatingMethodLogger) Log(ctx context.Context, c LogEntryConfig) { + ml.sink.Write(ml.Build(c)) } -func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) { +func (ml *TruncatingMethodLogger) truncateMetadata(mdPb *binlogpb.Metadata) (truncated bool) { if ml.headerMaxLen == maxUInt { return false } @@ -108,7 +128,7 @@ func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) { // but not counted towards the size limit. continue } - currentEntryLen := uint64(len(entry.Value)) + currentEntryLen := uint64(len(entry.GetKey())) + uint64(len(entry.GetValue())) if currentEntryLen > bytesLimit { break } @@ -119,7 +139,7 @@ func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) { return truncated } -func (ml *MethodLogger) truncateMessage(msgPb *pb.Message) (truncated bool) { +func (ml *TruncatingMethodLogger) truncateMessage(msgPb *binlogpb.Message) (truncated bool) { if ml.messageMaxLen == maxUInt { return false } @@ -131,8 +151,11 @@ func (ml *MethodLogger) truncateMessage(msgPb *pb.Message) (truncated bool) { } // LogEntryConfig represents the configuration for binary log entry. +// +// This is used in the 1.0 release of gcp/observability, and thus must not be +// deleted or changed. type LogEntryConfig interface { - toProto() *pb.GrpcLogEntry + toProto() *binlogpb.GrpcLogEntry } // ClientHeader configs the binary log entry to be a ClientHeader entry. @@ -146,10 +169,10 @@ type ClientHeader struct { PeerAddr net.Addr } -func (c *ClientHeader) toProto() *pb.GrpcLogEntry { +func (c *ClientHeader) toProto() *binlogpb.GrpcLogEntry { // This function doesn't need to set all the fields (e.g. seq ID). The Log // function will set the fields when necessary. - clientHeader := &pb.ClientHeader{ + clientHeader := &binlogpb.ClientHeader{ Metadata: mdToMetadataProto(c.Header), MethodName: c.MethodName, Authority: c.Authority, @@ -157,16 +180,16 @@ func (c *ClientHeader) toProto() *pb.GrpcLogEntry { if c.Timeout > 0 { clientHeader.Timeout = ptypes.DurationProto(c.Timeout) } - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_CLIENT_HEADER, - Payload: &pb.GrpcLogEntry_ClientHeader{ + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_CLIENT_HEADER, + Payload: &binlogpb.GrpcLogEntry_ClientHeader{ ClientHeader: clientHeader, }, } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } if c.PeerAddr != nil { ret.Peer = addrToProto(c.PeerAddr) @@ -182,19 +205,19 @@ type ServerHeader struct { PeerAddr net.Addr } -func (c *ServerHeader) toProto() *pb.GrpcLogEntry { - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_SERVER_HEADER, - Payload: &pb.GrpcLogEntry_ServerHeader{ - ServerHeader: &pb.ServerHeader{ +func (c *ServerHeader) toProto() *binlogpb.GrpcLogEntry { + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_SERVER_HEADER, + Payload: &binlogpb.GrpcLogEntry_ServerHeader{ + ServerHeader: &binlogpb.ServerHeader{ Metadata: mdToMetadataProto(c.Header), }, }, } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } if c.PeerAddr != nil { ret.Peer = addrToProto(c.PeerAddr) @@ -210,7 +233,7 @@ type ClientMessage struct { Message interface{} } -func (c *ClientMessage) toProto() *pb.GrpcLogEntry { +func (c *ClientMessage) toProto() *binlogpb.GrpcLogEntry { var ( data []byte err error @@ -225,19 +248,19 @@ func (c *ClientMessage) toProto() *pb.GrpcLogEntry { } else { grpclogLogger.Infof("binarylogging: message to log is neither proto.message nor []byte") } - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_CLIENT_MESSAGE, - Payload: &pb.GrpcLogEntry_Message{ - Message: &pb.Message{ + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_CLIENT_MESSAGE, + Payload: &binlogpb.GrpcLogEntry_Message{ + Message: &binlogpb.Message{ Length: uint32(len(data)), Data: data, }, }, } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } return ret } @@ -250,7 +273,7 @@ type ServerMessage struct { Message interface{} } -func (c *ServerMessage) toProto() *pb.GrpcLogEntry { +func (c *ServerMessage) toProto() *binlogpb.GrpcLogEntry { var ( data []byte err error @@ -265,19 +288,19 @@ func (c *ServerMessage) toProto() *pb.GrpcLogEntry { } else { grpclogLogger.Infof("binarylogging: message to log is neither proto.message nor []byte") } - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_SERVER_MESSAGE, - Payload: &pb.GrpcLogEntry_Message{ - Message: &pb.Message{ + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_SERVER_MESSAGE, + Payload: &binlogpb.GrpcLogEntry_Message{ + Message: &binlogpb.Message{ Length: uint32(len(data)), Data: data, }, }, } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } return ret } @@ -287,15 +310,15 @@ type ClientHalfClose struct { OnClientSide bool } -func (c *ClientHalfClose) toProto() *pb.GrpcLogEntry { - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_CLIENT_HALF_CLOSE, +func (c *ClientHalfClose) toProto() *binlogpb.GrpcLogEntry { + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_CLIENT_HALF_CLOSE, Payload: nil, // No payload here. } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } return ret } @@ -311,7 +334,7 @@ type ServerTrailer struct { PeerAddr net.Addr } -func (c *ServerTrailer) toProto() *pb.GrpcLogEntry { +func (c *ServerTrailer) toProto() *binlogpb.GrpcLogEntry { st, ok := status.FromError(c.Err) if !ok { grpclogLogger.Info("binarylogging: error in trailer is not a status error") @@ -327,10 +350,10 @@ func (c *ServerTrailer) toProto() *pb.GrpcLogEntry { grpclogLogger.Infof("binarylogging: failed to marshal status proto: %v", err) } } - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_SERVER_TRAILER, - Payload: &pb.GrpcLogEntry_Trailer{ - Trailer: &pb.Trailer{ + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_SERVER_TRAILER, + Payload: &binlogpb.GrpcLogEntry_Trailer{ + Trailer: &binlogpb.Trailer{ Metadata: mdToMetadataProto(c.Trailer), StatusCode: uint32(st.Code()), StatusMessage: st.Message(), @@ -339,9 +362,9 @@ func (c *ServerTrailer) toProto() *pb.GrpcLogEntry { }, } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } if c.PeerAddr != nil { ret.Peer = addrToProto(c.PeerAddr) @@ -354,15 +377,15 @@ type Cancel struct { OnClientSide bool } -func (c *Cancel) toProto() *pb.GrpcLogEntry { - ret := &pb.GrpcLogEntry{ - Type: pb.GrpcLogEntry_EVENT_TYPE_CANCEL, +func (c *Cancel) toProto() *binlogpb.GrpcLogEntry { + ret := &binlogpb.GrpcLogEntry{ + Type: binlogpb.GrpcLogEntry_EVENT_TYPE_CANCEL, Payload: nil, } if c.OnClientSide { - ret.Logger = pb.GrpcLogEntry_LOGGER_CLIENT + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_CLIENT } else { - ret.Logger = pb.GrpcLogEntry_LOGGER_SERVER + ret.Logger = binlogpb.GrpcLogEntry_LOGGER_SERVER } return ret } @@ -379,15 +402,15 @@ func metadataKeyOmit(key string) bool { return strings.HasPrefix(key, "grpc-") } -func mdToMetadataProto(md metadata.MD) *pb.Metadata { - ret := &pb.Metadata{} +func mdToMetadataProto(md metadata.MD) *binlogpb.Metadata { + ret := &binlogpb.Metadata{} for k, vv := range md { if metadataKeyOmit(k) { continue } for _, v := range vv { ret.Entry = append(ret.Entry, - &pb.MetadataEntry{ + &binlogpb.MetadataEntry{ Key: k, Value: []byte(v), }, @@ -397,26 +420,26 @@ func mdToMetadataProto(md metadata.MD) *pb.Metadata { return ret } -func addrToProto(addr net.Addr) *pb.Address { - ret := &pb.Address{} +func addrToProto(addr net.Addr) *binlogpb.Address { + ret := &binlogpb.Address{} switch a := addr.(type) { case *net.TCPAddr: if a.IP.To4() != nil { - ret.Type = pb.Address_TYPE_IPV4 + ret.Type = binlogpb.Address_TYPE_IPV4 } else if a.IP.To16() != nil { - ret.Type = pb.Address_TYPE_IPV6 + ret.Type = binlogpb.Address_TYPE_IPV6 } else { - ret.Type = pb.Address_TYPE_UNKNOWN + ret.Type = binlogpb.Address_TYPE_UNKNOWN // Do not set address and port fields. break } ret.Address = a.IP.String() ret.IpPort = uint32(a.Port) case *net.UnixAddr: - ret.Type = pb.Address_TYPE_UNIX + ret.Type = binlogpb.Address_TYPE_UNIX ret.Address = a.String() default: - ret.Type = pb.Address_TYPE_UNKNOWN + ret.Type = binlogpb.Address_TYPE_UNKNOWN } return ret } diff --git a/vendor/google.golang.org/grpc/internal/binarylog/sink.go b/vendor/google.golang.org/grpc/internal/binarylog/sink.go index 7d7a3056..264de387 100644 --- a/vendor/google.golang.org/grpc/internal/binarylog/sink.go +++ b/vendor/google.golang.org/grpc/internal/binarylog/sink.go @@ -26,7 +26,7 @@ import ( "time" "github.com/golang/protobuf/proto" - pb "google.golang.org/grpc/binarylog/grpc_binarylog_v1" + binlogpb "google.golang.org/grpc/binarylog/grpc_binarylog_v1" ) var ( @@ -42,15 +42,15 @@ type Sink interface { // Write will be called to write the log entry into the sink. // // It should be thread-safe so it can be called in parallel. - Write(*pb.GrpcLogEntry) error + Write(*binlogpb.GrpcLogEntry) error // Close will be called when the Sink is replaced by a new Sink. Close() error } type noopSink struct{} -func (ns *noopSink) Write(*pb.GrpcLogEntry) error { return nil } -func (ns *noopSink) Close() error { return nil } +func (ns *noopSink) Write(*binlogpb.GrpcLogEntry) error { return nil } +func (ns *noopSink) Close() error { return nil } // newWriterSink creates a binary log sink with the given writer. // @@ -66,10 +66,11 @@ type writerSink struct { out io.Writer } -func (ws *writerSink) Write(e *pb.GrpcLogEntry) error { +func (ws *writerSink) Write(e *binlogpb.GrpcLogEntry) error { b, err := proto.Marshal(e) if err != nil { - grpclogLogger.Infof("binary logging: failed to marshal proto message: %v", err) + grpclogLogger.Errorf("binary logging: failed to marshal proto message: %v", err) + return err } hdr := make([]byte, 4) binary.BigEndian.PutUint32(hdr, uint32(len(b))) @@ -85,24 +86,27 @@ func (ws *writerSink) Write(e *pb.GrpcLogEntry) error { func (ws *writerSink) Close() error { return nil } type bufferedSink struct { - mu sync.Mutex - closer io.Closer - out Sink // out is built on buf. - buf *bufio.Writer // buf is kept for flush. - - writeStartOnce sync.Once - writeTicker *time.Ticker + mu sync.Mutex + closer io.Closer + out Sink // out is built on buf. + buf *bufio.Writer // buf is kept for flush. + flusherStarted bool + + writeTicker *time.Ticker + done chan struct{} } -func (fs *bufferedSink) Write(e *pb.GrpcLogEntry) error { - // Start the write loop when Write is called. - fs.writeStartOnce.Do(fs.startFlushGoroutine) +func (fs *bufferedSink) Write(e *binlogpb.GrpcLogEntry) error { fs.mu.Lock() + defer fs.mu.Unlock() + if !fs.flusherStarted { + // Start the write loop when Write is called. + fs.startFlushGoroutine() + fs.flusherStarted = true + } if err := fs.out.Write(e); err != nil { - fs.mu.Unlock() return err } - fs.mu.Unlock() return nil } @@ -113,7 +117,12 @@ const ( func (fs *bufferedSink) startFlushGoroutine() { fs.writeTicker = time.NewTicker(bufFlushDuration) go func() { - for range fs.writeTicker.C { + for { + select { + case <-fs.done: + return + case <-fs.writeTicker.C: + } fs.mu.Lock() if err := fs.buf.Flush(); err != nil { grpclogLogger.Warningf("failed to flush to Sink: %v", err) @@ -124,10 +133,12 @@ func (fs *bufferedSink) startFlushGoroutine() { } func (fs *bufferedSink) Close() error { + fs.mu.Lock() + defer fs.mu.Unlock() if fs.writeTicker != nil { fs.writeTicker.Stop() } - fs.mu.Lock() + close(fs.done) if err := fs.buf.Flush(); err != nil { grpclogLogger.Warningf("failed to flush to Sink: %v", err) } @@ -137,7 +148,6 @@ func (fs *bufferedSink) Close() error { if err := fs.out.Close(); err != nil { grpclogLogger.Warningf("failed to close the Sink: %v", err) } - fs.mu.Unlock() return nil } @@ -155,5 +165,6 @@ func NewBufferedSink(o io.WriteCloser) Sink { closer: o, out: newWriterSink(bufW), buf: bufW, + done: make(chan struct{}), } } diff --git a/vendor/google.golang.org/grpc/internal/buffer/unbounded.go b/vendor/google.golang.org/grpc/internal/buffer/unbounded.go index 9f6a0c12..81c2f5fd 100644 --- a/vendor/google.golang.org/grpc/internal/buffer/unbounded.go +++ b/vendor/google.golang.org/grpc/internal/buffer/unbounded.go @@ -35,6 +35,7 @@ import "sync" // internal/transport/transport.go for an example of this. type Unbounded struct { c chan interface{} + closed bool mu sync.Mutex backlog []interface{} } @@ -47,16 +48,18 @@ func NewUnbounded() *Unbounded { // Put adds t to the unbounded buffer. func (b *Unbounded) Put(t interface{}) { b.mu.Lock() + defer b.mu.Unlock() + if b.closed { + return + } if len(b.backlog) == 0 { select { case b.c <- t: - b.mu.Unlock() return default: } } b.backlog = append(b.backlog, t) - b.mu.Unlock() } // Load sends the earliest buffered data, if any, onto the read channel @@ -64,6 +67,10 @@ func (b *Unbounded) Put(t interface{}) { // value from the read channel. func (b *Unbounded) Load() { b.mu.Lock() + defer b.mu.Unlock() + if b.closed { + return + } if len(b.backlog) > 0 { select { case b.c <- b.backlog[0]: @@ -72,7 +79,6 @@ func (b *Unbounded) Load() { default: } } - b.mu.Unlock() } // Get returns a read channel on which values added to the buffer, via Put(), @@ -80,6 +86,20 @@ func (b *Unbounded) Load() { // // Upon reading a value from this channel, users are expected to call Load() to // send the next buffered value onto the channel if there is any. +// +// If the unbounded buffer is closed, the read channel returned by this method +// is closed. func (b *Unbounded) Get() <-chan interface{} { return b.c } + +// Close closes the unbounded buffer. +func (b *Unbounded) Close() { + b.mu.Lock() + defer b.mu.Unlock() + if b.closed { + return + } + b.closed = true + close(b.c) +} diff --git a/vendor/google.golang.org/grpc/internal/channelz/funcs.go b/vendor/google.golang.org/grpc/internal/channelz/funcs.go index f7314139..777cbcd7 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/funcs.go +++ b/vendor/google.golang.org/grpc/internal/channelz/funcs.go @@ -24,6 +24,8 @@ package channelz import ( + "context" + "errors" "fmt" "sort" "sync" @@ -49,7 +51,8 @@ var ( // TurnOn turns on channelz data collection. func TurnOn() { if !IsOn() { - NewChannelzStorage() + db.set(newChannelMap()) + idGen.reset() atomic.StoreInt32(&curState, 1) } } @@ -94,46 +97,40 @@ func (d *dbWrapper) get() *channelMap { return d.DB } -// NewChannelzStorage initializes channelz data storage and id generator. +// NewChannelzStorageForTesting initializes channelz data storage and id +// generator for testing purposes. // -// This function returns a cleanup function to wait for all channelz state to be reset by the -// grpc goroutines when those entities get closed. By using this cleanup function, we make sure tests -// don't mess up each other, i.e. lingering goroutine from previous test doing entity removal happen -// to remove some entity just register by the new test, since the id space is the same. -// -// Note: This function is exported for testing purpose only. User should not call -// it in most cases. -func NewChannelzStorage() (cleanup func() error) { - db.set(&channelMap{ - topLevelChannels: make(map[int64]struct{}), - channels: make(map[int64]*channel), - listenSockets: make(map[int64]*listenSocket), - normalSockets: make(map[int64]*normalSocket), - servers: make(map[int64]*server), - subChannels: make(map[int64]*subChannel), - }) +// Returns a cleanup function to be invoked by the test, which waits for up to +// 10s for all channelz state to be reset by the grpc goroutines when those +// entities get closed. This cleanup function helps with ensuring that tests +// don't mess up each other. +func NewChannelzStorageForTesting() (cleanup func() error) { + db.set(newChannelMap()) idGen.reset() + return func() error { - var err error cm := db.get() if cm == nil { return nil } - for i := 0; i < 1000; i++ { - cm.mu.Lock() - if len(cm.topLevelChannels) == 0 && len(cm.servers) == 0 && len(cm.channels) == 0 && len(cm.subChannels) == 0 && len(cm.listenSockets) == 0 && len(cm.normalSockets) == 0 { - cm.mu.Unlock() - // all things stored in the channelz map have been cleared. + + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + ticker := time.NewTicker(10 * time.Millisecond) + defer ticker.Stop() + for { + cm.mu.RLock() + topLevelChannels, servers, channels, subChannels, listenSockets, normalSockets := len(cm.topLevelChannels), len(cm.servers), len(cm.channels), len(cm.subChannels), len(cm.listenSockets), len(cm.normalSockets) + cm.mu.RUnlock() + + if err := ctx.Err(); err != nil { + return fmt.Errorf("after 10s the channelz map has not been cleaned up yet, topchannels: %d, servers: %d, channels: %d, subchannels: %d, listen sockets: %d, normal sockets: %d", topLevelChannels, servers, channels, subChannels, listenSockets, normalSockets) + } + if topLevelChannels == 0 && servers == 0 && channels == 0 && subChannels == 0 && listenSockets == 0 && normalSockets == 0 { return nil } - cm.mu.Unlock() - time.Sleep(10 * time.Millisecond) + <-ticker.C } - - cm.mu.Lock() - err = fmt.Errorf("after 10s the channelz map has not been cleaned up yet, topchannels: %d, servers: %d, channels: %d, subchannels: %d, listen sockets: %d, normal sockets: %d", len(cm.topLevelChannels), len(cm.servers), len(cm.channels), len(cm.subChannels), len(cm.listenSockets), len(cm.normalSockets)) - cm.mu.Unlock() - return err } } @@ -188,54 +185,77 @@ func GetServer(id int64) *ServerMetric { return db.get().GetServer(id) } -// RegisterChannel registers the given channel c in channelz database with ref -// as its reference name, and add it to the child list of its parent (identified -// by pid). pid = 0 means no parent. It returns the unique channelz tracking id -// assigned to this channel. -func RegisterChannel(c Channel, pid int64, ref string) int64 { +// RegisterChannel registers the given channel c in the channelz database with +// ref as its reference name, and adds it to the child list of its parent +// (identified by pid). pid == nil means no parent. +// +// Returns a unique channelz identifier assigned to this channel. +// +// If channelz is not turned ON, the channelz database is not mutated. +func RegisterChannel(c Channel, pid *Identifier, ref string) *Identifier { id := idGen.genID() + var parent int64 + isTopChannel := true + if pid != nil { + isTopChannel = false + parent = pid.Int() + } + + if !IsOn() { + return newIdentifer(RefChannel, id, pid) + } + cn := &channel{ refName: ref, c: c, subChans: make(map[int64]string), nestedChans: make(map[int64]string), id: id, - pid: pid, + pid: parent, trace: &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())}, } - if pid == 0 { - db.get().addChannel(id, cn, true, pid, ref) - } else { - db.get().addChannel(id, cn, false, pid, ref) - } - return id + db.get().addChannel(id, cn, isTopChannel, parent) + return newIdentifer(RefChannel, id, pid) } -// RegisterSubChannel registers the given channel c in channelz database with ref -// as its reference name, and add it to the child list of its parent (identified -// by pid). It returns the unique channelz tracking id assigned to this subchannel. -func RegisterSubChannel(c Channel, pid int64, ref string) int64 { - if pid == 0 { - logger.Error("a SubChannel's parent id cannot be 0") - return 0 +// RegisterSubChannel registers the given subChannel c in the channelz database +// with ref as its reference name, and adds it to the child list of its parent +// (identified by pid). +// +// Returns a unique channelz identifier assigned to this subChannel. +// +// If channelz is not turned ON, the channelz database is not mutated. +func RegisterSubChannel(c Channel, pid *Identifier, ref string) (*Identifier, error) { + if pid == nil { + return nil, errors.New("a SubChannel's parent id cannot be nil") } id := idGen.genID() + if !IsOn() { + return newIdentifer(RefSubChannel, id, pid), nil + } + sc := &subChannel{ refName: ref, c: c, sockets: make(map[int64]string), id: id, - pid: pid, + pid: pid.Int(), trace: &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())}, } - db.get().addSubChannel(id, sc, pid, ref) - return id + db.get().addSubChannel(id, sc, pid.Int()) + return newIdentifer(RefSubChannel, id, pid), nil } // RegisterServer registers the given server s in channelz database. It returns // the unique channelz tracking id assigned to this server. -func RegisterServer(s Server, ref string) int64 { +// +// If channelz is not turned ON, the channelz database is not mutated. +func RegisterServer(s Server, ref string) *Identifier { id := idGen.genID() + if !IsOn() { + return newIdentifer(RefServer, id, nil) + } + svr := &server{ refName: ref, s: s, @@ -244,71 +264,92 @@ func RegisterServer(s Server, ref string) int64 { id: id, } db.get().addServer(id, svr) - return id + return newIdentifer(RefServer, id, nil) } // RegisterListenSocket registers the given listen socket s in channelz database // with ref as its reference name, and add it to the child list of its parent // (identified by pid). It returns the unique channelz tracking id assigned to // this listen socket. -func RegisterListenSocket(s Socket, pid int64, ref string) int64 { - if pid == 0 { - logger.Error("a ListenSocket's parent id cannot be 0") - return 0 +// +// If channelz is not turned ON, the channelz database is not mutated. +func RegisterListenSocket(s Socket, pid *Identifier, ref string) (*Identifier, error) { + if pid == nil { + return nil, errors.New("a ListenSocket's parent id cannot be 0") } id := idGen.genID() - ls := &listenSocket{refName: ref, s: s, id: id, pid: pid} - db.get().addListenSocket(id, ls, pid, ref) - return id + if !IsOn() { + return newIdentifer(RefListenSocket, id, pid), nil + } + + ls := &listenSocket{refName: ref, s: s, id: id, pid: pid.Int()} + db.get().addListenSocket(id, ls, pid.Int()) + return newIdentifer(RefListenSocket, id, pid), nil } // RegisterNormalSocket registers the given normal socket s in channelz database -// with ref as its reference name, and add it to the child list of its parent +// with ref as its reference name, and adds it to the child list of its parent // (identified by pid). It returns the unique channelz tracking id assigned to // this normal socket. -func RegisterNormalSocket(s Socket, pid int64, ref string) int64 { - if pid == 0 { - logger.Error("a NormalSocket's parent id cannot be 0") - return 0 +// +// If channelz is not turned ON, the channelz database is not mutated. +func RegisterNormalSocket(s Socket, pid *Identifier, ref string) (*Identifier, error) { + if pid == nil { + return nil, errors.New("a NormalSocket's parent id cannot be 0") } id := idGen.genID() - ns := &normalSocket{refName: ref, s: s, id: id, pid: pid} - db.get().addNormalSocket(id, ns, pid, ref) - return id + if !IsOn() { + return newIdentifer(RefNormalSocket, id, pid), nil + } + + ns := &normalSocket{refName: ref, s: s, id: id, pid: pid.Int()} + db.get().addNormalSocket(id, ns, pid.Int()) + return newIdentifer(RefNormalSocket, id, pid), nil } -// RemoveEntry removes an entry with unique channelz trakcing id to be id from +// RemoveEntry removes an entry with unique channelz tracking id to be id from // channelz database. -func RemoveEntry(id int64) { - db.get().removeEntry(id) +// +// If channelz is not turned ON, this function is a no-op. +func RemoveEntry(id *Identifier) { + if !IsOn() { + return + } + db.get().removeEntry(id.Int()) } -// TraceEventDesc is what the caller of AddTraceEvent should provide to describe the event to be added -// to the channel trace. -// The Parent field is optional. It is used for event that will be recorded in the entity's parent -// trace also. +// TraceEventDesc is what the caller of AddTraceEvent should provide to describe +// the event to be added to the channel trace. +// +// The Parent field is optional. It is used for an event that will be recorded +// in the entity's parent trace. type TraceEventDesc struct { Desc string Severity Severity Parent *TraceEventDesc } -// AddTraceEvent adds trace related to the entity with specified id, using the provided TraceEventDesc. -func AddTraceEvent(l grpclog.DepthLoggerV2, id int64, depth int, desc *TraceEventDesc) { - for d := desc; d != nil; d = d.Parent { - switch d.Severity { - case CtUnknown, CtInfo: - l.InfoDepth(depth+1, d.Desc) - case CtWarning: - l.WarningDepth(depth+1, d.Desc) - case CtError: - l.ErrorDepth(depth+1, d.Desc) - } +// AddTraceEvent adds trace related to the entity with specified id, using the +// provided TraceEventDesc. +// +// If channelz is not turned ON, this will simply log the event descriptions. +func AddTraceEvent(l grpclog.DepthLoggerV2, id *Identifier, depth int, desc *TraceEventDesc) { + // Log only the trace description associated with the bottom most entity. + switch desc.Severity { + case CtUnknown, CtInfo: + l.InfoDepth(depth+1, withParens(id)+desc.Desc) + case CtWarning: + l.WarningDepth(depth+1, withParens(id)+desc.Desc) + case CtError: + l.ErrorDepth(depth+1, withParens(id)+desc.Desc) } + if getMaxTraceEntry() == 0 { return } - db.get().traceEvent(id, desc) + if IsOn() { + db.get().traceEvent(id.Int(), desc) + } } // channelMap is the storage data structure for channelz. @@ -326,6 +367,17 @@ type channelMap struct { normalSockets map[int64]*normalSocket } +func newChannelMap() *channelMap { + return &channelMap{ + topLevelChannels: make(map[int64]struct{}), + channels: make(map[int64]*channel), + listenSockets: make(map[int64]*listenSocket), + normalSockets: make(map[int64]*normalSocket), + servers: make(map[int64]*server), + subChannels: make(map[int64]*subChannel), + } +} + func (c *channelMap) addServer(id int64, s *server) { c.mu.Lock() s.cm = c @@ -333,7 +385,7 @@ func (c *channelMap) addServer(id int64, s *server) { c.mu.Unlock() } -func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64, ref string) { +func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64) { c.mu.Lock() cn.cm = c cn.trace.cm = c @@ -346,7 +398,7 @@ func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid in c.mu.Unlock() } -func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref string) { +func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64) { c.mu.Lock() sc.cm = c sc.trace.cm = c @@ -355,7 +407,7 @@ func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref stri c.mu.Unlock() } -func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref string) { +func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64) { c.mu.Lock() ls.cm = c c.listenSockets[id] = ls @@ -363,7 +415,7 @@ func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref c.mu.Unlock() } -func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64, ref string) { +func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64) { c.mu.Lock() ns.cm = c c.normalSockets[id] = ns @@ -630,7 +682,7 @@ func (c *channelMap) GetServerSockets(id int64, startID int64, maxResults int64) if count == 0 { end = true } - var s []*SocketMetric + s := make([]*SocketMetric, 0, len(sks)) for _, ns := range sks { sm := &SocketMetric{} sm.SocketData = ns.s.ChannelzMetric() diff --git a/vendor/google.golang.org/grpc/internal/channelz/id.go b/vendor/google.golang.org/grpc/internal/channelz/id.go new file mode 100644 index 00000000..c9a27acd --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/channelz/id.go @@ -0,0 +1,75 @@ +/* + * + * Copyright 2022 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package channelz + +import "fmt" + +// Identifier is an opaque identifier which uniquely identifies an entity in the +// channelz database. +type Identifier struct { + typ RefChannelType + id int64 + str string + pid *Identifier +} + +// Type returns the entity type corresponding to id. +func (id *Identifier) Type() RefChannelType { + return id.typ +} + +// Int returns the integer identifier corresponding to id. +func (id *Identifier) Int() int64 { + return id.id +} + +// String returns a string representation of the entity corresponding to id. +// +// This includes some information about the parent as well. Examples: +// Top-level channel: [Channel #channel-number] +// Nested channel: [Channel #parent-channel-number Channel #channel-number] +// Sub channel: [Channel #parent-channel SubChannel #subchannel-number] +func (id *Identifier) String() string { + return id.str +} + +// Equal returns true if other is the same as id. +func (id *Identifier) Equal(other *Identifier) bool { + if (id != nil) != (other != nil) { + return false + } + if id == nil && other == nil { + return true + } + return id.typ == other.typ && id.id == other.id && id.pid == other.pid +} + +// NewIdentifierForTesting returns a new opaque identifier to be used only for +// testing purposes. +func NewIdentifierForTesting(typ RefChannelType, id int64, pid *Identifier) *Identifier { + return newIdentifer(typ, id, pid) +} + +func newIdentifer(typ RefChannelType, id int64, pid *Identifier) *Identifier { + str := fmt.Sprintf("%s #%d", typ, id) + if pid != nil { + str = fmt.Sprintf("%s %s", pid, str) + } + return &Identifier{typ: typ, id: id, str: str, pid: pid} +} diff --git a/vendor/google.golang.org/grpc/internal/channelz/logging.go b/vendor/google.golang.org/grpc/internal/channelz/logging.go index b0013f9c..8e13a3d2 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/logging.go +++ b/vendor/google.golang.org/grpc/internal/channelz/logging.go @@ -26,77 +26,54 @@ import ( var logger = grpclog.Component("channelz") +func withParens(id *Identifier) string { + return "[" + id.String() + "] " +} + // Info logs and adds a trace event if channelz is on. -func Info(l grpclog.DepthLoggerV2, id int64, args ...interface{}) { - if IsOn() { - AddTraceEvent(l, id, 1, &TraceEventDesc{ - Desc: fmt.Sprint(args...), - Severity: CtInfo, - }) - } else { - l.InfoDepth(1, args...) - } +func Info(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) { + AddTraceEvent(l, id, 1, &TraceEventDesc{ + Desc: fmt.Sprint(args...), + Severity: CtInfo, + }) } // Infof logs and adds a trace event if channelz is on. -func Infof(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) { - msg := fmt.Sprintf(format, args...) - if IsOn() { - AddTraceEvent(l, id, 1, &TraceEventDesc{ - Desc: msg, - Severity: CtInfo, - }) - } else { - l.InfoDepth(1, msg) - } +func Infof(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) { + AddTraceEvent(l, id, 1, &TraceEventDesc{ + Desc: fmt.Sprintf(format, args...), + Severity: CtInfo, + }) } // Warning logs and adds a trace event if channelz is on. -func Warning(l grpclog.DepthLoggerV2, id int64, args ...interface{}) { - if IsOn() { - AddTraceEvent(l, id, 1, &TraceEventDesc{ - Desc: fmt.Sprint(args...), - Severity: CtWarning, - }) - } else { - l.WarningDepth(1, args...) - } +func Warning(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) { + AddTraceEvent(l, id, 1, &TraceEventDesc{ + Desc: fmt.Sprint(args...), + Severity: CtWarning, + }) } // Warningf logs and adds a trace event if channelz is on. -func Warningf(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) { - msg := fmt.Sprintf(format, args...) - if IsOn() { - AddTraceEvent(l, id, 1, &TraceEventDesc{ - Desc: msg, - Severity: CtWarning, - }) - } else { - l.WarningDepth(1, msg) - } +func Warningf(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) { + AddTraceEvent(l, id, 1, &TraceEventDesc{ + Desc: fmt.Sprintf(format, args...), + Severity: CtWarning, + }) } // Error logs and adds a trace event if channelz is on. -func Error(l grpclog.DepthLoggerV2, id int64, args ...interface{}) { - if IsOn() { - AddTraceEvent(l, id, 1, &TraceEventDesc{ - Desc: fmt.Sprint(args...), - Severity: CtError, - }) - } else { - l.ErrorDepth(1, args...) - } +func Error(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) { + AddTraceEvent(l, id, 1, &TraceEventDesc{ + Desc: fmt.Sprint(args...), + Severity: CtError, + }) } // Errorf logs and adds a trace event if channelz is on. -func Errorf(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) { - msg := fmt.Sprintf(format, args...) - if IsOn() { - AddTraceEvent(l, id, 1, &TraceEventDesc{ - Desc: msg, - Severity: CtError, - }) - } else { - l.ErrorDepth(1, msg) - } +func Errorf(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) { + AddTraceEvent(l, id, 1, &TraceEventDesc{ + Desc: fmt.Sprintf(format, args...), + Severity: CtError, + }) } diff --git a/vendor/google.golang.org/grpc/internal/channelz/types.go b/vendor/google.golang.org/grpc/internal/channelz/types.go index 3c595d15..7b2f350e 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/types.go +++ b/vendor/google.golang.org/grpc/internal/channelz/types.go @@ -273,10 +273,10 @@ func (c *channel) deleteSelfFromMap() (delete bool) { // deleteSelfIfReady tries to delete the channel itself from the channelz database. // The delete process includes two steps: -// 1. delete the channel from the entry relation tree, i.e. delete the channel reference from its -// parent's child list. -// 2. delete the channel from the map, i.e. delete the channel entirely from channelz. Lookup by id -// will return entry not found error. +// 1. delete the channel from the entry relation tree, i.e. delete the channel reference from its +// parent's child list. +// 2. delete the channel from the map, i.e. delete the channel entirely from channelz. Lookup by id +// will return entry not found error. func (c *channel) deleteSelfIfReady() { if !c.deleteSelfFromTree() { return @@ -381,10 +381,10 @@ func (sc *subChannel) deleteSelfFromMap() (delete bool) { // deleteSelfIfReady tries to delete the subchannel itself from the channelz database. // The delete process includes two steps: -// 1. delete the subchannel from the entry relation tree, i.e. delete the subchannel reference from -// its parent's child list. -// 2. delete the subchannel from the map, i.e. delete the subchannel entirely from channelz. Lookup -// by id will return entry not found error. +// 1. delete the subchannel from the entry relation tree, i.e. delete the subchannel reference from +// its parent's child list. +// 2. delete the subchannel from the map, i.e. delete the subchannel entirely from channelz. Lookup +// by id will return entry not found error. func (sc *subChannel) deleteSelfIfReady() { if !sc.deleteSelfFromTree() { return @@ -686,12 +686,33 @@ const ( type RefChannelType int const ( + // RefUnknown indicates an unknown entity type, the zero value for this type. + RefUnknown RefChannelType = iota // RefChannel indicates the referenced entity is a Channel. - RefChannel RefChannelType = iota + RefChannel // RefSubChannel indicates the referenced entity is a SubChannel. RefSubChannel + // RefServer indicates the referenced entity is a Server. + RefServer + // RefListenSocket indicates the referenced entity is a ListenSocket. + RefListenSocket + // RefNormalSocket indicates the referenced entity is a NormalSocket. + RefNormalSocket ) +var refChannelTypeToString = map[RefChannelType]string{ + RefUnknown: "Unknown", + RefChannel: "Channel", + RefSubChannel: "SubChannel", + RefServer: "Server", + RefListenSocket: "ListenSocket", + RefNormalSocket: "NormalSocket", +} + +func (r RefChannelType) String() string { + return refChannelTypeToString[r] +} + func (c *channelTrace) dumpData() *ChannelTrace { c.mu.Lock() ct := &ChannelTrace{EventNum: c.eventCount, CreationTime: c.createdTime} diff --git a/vendor/google.golang.org/grpc/internal/channelz/types_linux.go b/vendor/google.golang.org/grpc/internal/channelz/types_linux.go index 692dd618..1b1c4cce 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/types_linux.go +++ b/vendor/google.golang.org/grpc/internal/channelz/types_linux.go @@ -1,5 +1,3 @@ -// +build !appengine - /* * * Copyright 2018 gRPC authors. diff --git a/vendor/google.golang.org/grpc/internal/channelz/types_nonlinux.go b/vendor/google.golang.org/grpc/internal/channelz/types_nonlinux.go index 19c2fc52..8b06eed1 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/types_nonlinux.go +++ b/vendor/google.golang.org/grpc/internal/channelz/types_nonlinux.go @@ -1,4 +1,5 @@ -// +build !linux appengine +//go:build !linux +// +build !linux /* * @@ -37,6 +38,6 @@ type SocketOptionData struct { // Windows OS doesn't support Socket Option func (s *SocketOptionData) Getsockopt(fd uintptr) { once.Do(func() { - logger.Warning("Channelz: socket options are not supported on non-linux os and appengine.") + logger.Warning("Channelz: socket options are not supported on non-linux environments") }) } diff --git a/vendor/google.golang.org/grpc/internal/channelz/util_linux.go b/vendor/google.golang.org/grpc/internal/channelz/util_linux.go index fdf409d5..8d194e44 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/util_linux.go +++ b/vendor/google.golang.org/grpc/internal/channelz/util_linux.go @@ -1,5 +1,3 @@ -// +build linux,!appengine - /* * * Copyright 2018 gRPC authors. diff --git a/vendor/google.golang.org/grpc/internal/channelz/util_nonlinux.go b/vendor/google.golang.org/grpc/internal/channelz/util_nonlinux.go index 8864a081..837ddc40 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/util_nonlinux.go +++ b/vendor/google.golang.org/grpc/internal/channelz/util_nonlinux.go @@ -1,4 +1,5 @@ -// +build !linux appengine +//go:build !linux +// +build !linux /* * diff --git a/vendor/google.golang.org/grpc/internal/credentials/spiffe.go b/vendor/google.golang.org/grpc/internal/credentials/spiffe.go index be70b6cd..25ade623 100644 --- a/vendor/google.golang.org/grpc/internal/credentials/spiffe.go +++ b/vendor/google.golang.org/grpc/internal/credentials/spiffe.go @@ -1,5 +1,3 @@ -// +build !appengine - /* * * Copyright 2020 gRPC authors. diff --git a/vendor/google.golang.org/grpc/internal/credentials/syscallconn.go b/vendor/google.golang.org/grpc/internal/credentials/syscallconn.go index f499a614..2919632d 100644 --- a/vendor/google.golang.org/grpc/internal/credentials/syscallconn.go +++ b/vendor/google.golang.org/grpc/internal/credentials/syscallconn.go @@ -1,5 +1,3 @@ -// +build !appengine - /* * * Copyright 2018 gRPC authors. diff --git a/vendor/google.golang.org/grpc/internal/credentials/util.go b/vendor/google.golang.org/grpc/internal/credentials/util.go index 55664fa4..f792fd22 100644 --- a/vendor/google.golang.org/grpc/internal/credentials/util.go +++ b/vendor/google.golang.org/grpc/internal/credentials/util.go @@ -18,7 +18,9 @@ package credentials -import "crypto/tls" +import ( + "crypto/tls" +) const alpnProtoStrH2 = "h2" diff --git a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go index 73931a94..77c2c0b8 100644 --- a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go +++ b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go @@ -21,18 +21,49 @@ package envconfig import ( "os" + "strconv" "strings" ) -const ( - prefix = "GRPC_GO_" - retryStr = prefix + "RETRY" - txtErrIgnoreStr = prefix + "IGNORE_TXT_ERRORS" -) - var ( - // Retry is set if retry is explicitly enabled via "GRPC_GO_RETRY=on". - Retry = strings.EqualFold(os.Getenv(retryStr), "on") // TXTErrIgnore is set if TXT errors should be ignored ("GRPC_GO_IGNORE_TXT_ERRORS" is not "false"). - TXTErrIgnore = !strings.EqualFold(os.Getenv(txtErrIgnoreStr), "false") + TXTErrIgnore = boolFromEnv("GRPC_GO_IGNORE_TXT_ERRORS", true) + // AdvertiseCompressors is set if registered compressor should be advertised + // ("GRPC_GO_ADVERTISE_COMPRESSORS" is not "false"). + AdvertiseCompressors = boolFromEnv("GRPC_GO_ADVERTISE_COMPRESSORS", true) + // RingHashCap indicates the maximum ring size which defaults to 4096 + // entries but may be overridden by setting the environment variable + // "GRPC_RING_HASH_CAP". This does not override the default bounds + // checking which NACKs configs specifying ring sizes > 8*1024*1024 (~8M). + RingHashCap = uint64FromEnv("GRPC_RING_HASH_CAP", 4096, 1, 8*1024*1024) + // PickFirstLBConfig is set if we should support configuration of the + // pick_first LB policy, which can be enabled by setting the environment + // variable "GRPC_EXPERIMENTAL_PICKFIRST_LB_CONFIG" to "true". + PickFirstLBConfig = boolFromEnv("GRPC_EXPERIMENTAL_PICKFIRST_LB_CONFIG", false) + // ALTSMaxConcurrentHandshakes is the maximum number of concurrent ALTS + // handshakes that can be performed. + ALTSMaxConcurrentHandshakes = uint64FromEnv("GRPC_ALTS_MAX_CONCURRENT_HANDSHAKES", 100, 1, 100) ) + +func boolFromEnv(envVar string, def bool) bool { + if def { + // The default is true; return true unless the variable is "false". + return !strings.EqualFold(os.Getenv(envVar), "false") + } + // The default is false; return false unless the variable is "true". + return strings.EqualFold(os.Getenv(envVar), "true") +} + +func uint64FromEnv(envVar string, def, min, max uint64) uint64 { + v, err := strconv.ParseUint(os.Getenv(envVar), 10, 64) + if err != nil { + return def + } + if v < min { + return min + } + if v > max { + return max + } + return v +} diff --git a/vendor/google.golang.org/grpc/internal/envconfig/observability.go b/vendor/google.golang.org/grpc/internal/envconfig/observability.go new file mode 100644 index 00000000..dd314cfb --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/envconfig/observability.go @@ -0,0 +1,42 @@ +/* + * + * Copyright 2022 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package envconfig + +import "os" + +const ( + envObservabilityConfig = "GRPC_GCP_OBSERVABILITY_CONFIG" + envObservabilityConfigFile = "GRPC_GCP_OBSERVABILITY_CONFIG_FILE" +) + +var ( + // ObservabilityConfig is the json configuration for the gcp/observability + // package specified directly in the envObservabilityConfig env var. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + ObservabilityConfig = os.Getenv(envObservabilityConfig) + // ObservabilityConfigFile is the json configuration for the + // gcp/observability specified in a file with the location specified in + // envObservabilityConfigFile env var. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + ObservabilityConfigFile = os.Getenv(envObservabilityConfigFile) +) diff --git a/vendor/google.golang.org/grpc/internal/envconfig/xds.go b/vendor/google.golang.org/grpc/internal/envconfig/xds.go new file mode 100644 index 00000000..02b4b6a1 --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/envconfig/xds.go @@ -0,0 +1,95 @@ +/* + * + * Copyright 2020 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package envconfig + +import ( + "os" +) + +const ( + // XDSBootstrapFileNameEnv is the env variable to set bootstrap file name. + // Do not use this and read from env directly. Its value is read and kept in + // variable XDSBootstrapFileName. + // + // When both bootstrap FileName and FileContent are set, FileName is used. + XDSBootstrapFileNameEnv = "GRPC_XDS_BOOTSTRAP" + // XDSBootstrapFileContentEnv is the env variable to set bootstrap file + // content. Do not use this and read from env directly. Its value is read + // and kept in variable XDSBootstrapFileContent. + // + // When both bootstrap FileName and FileContent are set, FileName is used. + XDSBootstrapFileContentEnv = "GRPC_XDS_BOOTSTRAP_CONFIG" +) + +var ( + // XDSBootstrapFileName holds the name of the file which contains xDS + // bootstrap configuration. Users can specify the location of the bootstrap + // file by setting the environment variable "GRPC_XDS_BOOTSTRAP". + // + // When both bootstrap FileName and FileContent are set, FileName is used. + XDSBootstrapFileName = os.Getenv(XDSBootstrapFileNameEnv) + // XDSBootstrapFileContent holds the content of the xDS bootstrap + // configuration. Users can specify the bootstrap config by setting the + // environment variable "GRPC_XDS_BOOTSTRAP_CONFIG". + // + // When both bootstrap FileName and FileContent are set, FileName is used. + XDSBootstrapFileContent = os.Getenv(XDSBootstrapFileContentEnv) + // XDSRingHash indicates whether ring hash support is enabled, which can be + // disabled by setting the environment variable + // "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH" to "false". + XDSRingHash = boolFromEnv("GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH", true) + // XDSClientSideSecurity is used to control processing of security + // configuration on the client-side. + // + // Note that there is no env var protection for the server-side because we + // have a brand new API on the server-side and users explicitly need to use + // the new API to get security integration on the server. + XDSClientSideSecurity = boolFromEnv("GRPC_XDS_EXPERIMENTAL_SECURITY_SUPPORT", true) + // XDSAggregateAndDNS indicates whether processing of aggregated cluster and + // DNS cluster is enabled, which can be disabled by setting the environment + // variable "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER" + // to "false". + XDSAggregateAndDNS = boolFromEnv("GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER", true) + + // XDSRBAC indicates whether xDS configured RBAC HTTP Filter is enabled, + // which can be disabled by setting the environment variable + // "GRPC_XDS_EXPERIMENTAL_RBAC" to "false". + XDSRBAC = boolFromEnv("GRPC_XDS_EXPERIMENTAL_RBAC", true) + // XDSOutlierDetection indicates whether outlier detection support is + // enabled, which can be disabled by setting the environment variable + // "GRPC_EXPERIMENTAL_ENABLE_OUTLIER_DETECTION" to "false". + XDSOutlierDetection = boolFromEnv("GRPC_EXPERIMENTAL_ENABLE_OUTLIER_DETECTION", true) + // XDSFederation indicates whether federation support is enabled, which can + // be enabled by setting the environment variable + // "GRPC_EXPERIMENTAL_XDS_FEDERATION" to "true". + XDSFederation = boolFromEnv("GRPC_EXPERIMENTAL_XDS_FEDERATION", true) + + // XDSRLS indicates whether processing of Cluster Specifier plugins and + // support for the RLS CLuster Specifier is enabled, which can be disabled by + // setting the environment variable "GRPC_EXPERIMENTAL_XDS_RLS_LB" to + // "false". + XDSRLS = boolFromEnv("GRPC_EXPERIMENTAL_XDS_RLS_LB", true) + + // C2PResolverTestOnlyTrafficDirectorURI is the TD URI for testing. + C2PResolverTestOnlyTrafficDirectorURI = os.Getenv("GRPC_TEST_ONLY_GOOGLE_C2P_RESOLVER_TRAFFIC_DIRECTOR_URI") + // XDSCustomLBPolicy indicates whether Custom LB Policies are enabled, which + // can be disabled by setting the environment variable + // "GRPC_EXPERIMENTAL_XDS_CUSTOM_LB_CONFIG" to "false". + XDSCustomLBPolicy = boolFromEnv("GRPC_EXPERIMENTAL_XDS_CUSTOM_LB_CONFIG", true) +) diff --git a/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go b/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go index e6f975cb..b68e26a3 100644 --- a/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go +++ b/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go @@ -110,17 +110,17 @@ type LoggerV2 interface { // This is a copy of the DepthLoggerV2 defined in the external grpclog package. // It is defined here to avoid a circular dependency. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. type DepthLoggerV2 interface { - // InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print. + // InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Println. InfoDepth(depth int, args ...interface{}) - // WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print. + // WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Println. WarningDepth(depth int, args ...interface{}) - // ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print. + // ErrorDepth logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Println. ErrorDepth(depth int, args ...interface{}) - // FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print. + // FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Println. FatalDepth(depth int, args ...interface{}) } diff --git a/vendor/google.golang.org/grpc/internal/grpclog/prefixLogger.go b/vendor/google.golang.org/grpc/internal/grpclog/prefixLogger.go index 82af70e9..02224b42 100644 --- a/vendor/google.golang.org/grpc/internal/grpclog/prefixLogger.go +++ b/vendor/google.golang.org/grpc/internal/grpclog/prefixLogger.go @@ -63,6 +63,9 @@ func (pl *PrefixLogger) Errorf(format string, args ...interface{}) { // Debugf does info logging at verbose level 2. func (pl *PrefixLogger) Debugf(format string, args ...interface{}) { + // TODO(6044): Refactor interfaces LoggerV2 and DepthLogger, and maybe + // rewrite PrefixLogger a little to ensure that we don't use the global + // `Logger` here, and instead use the `logger` field. if !Logger.V(2) { return } @@ -73,6 +76,15 @@ func (pl *PrefixLogger) Debugf(format string, args ...interface{}) { return } InfoDepth(1, fmt.Sprintf(format, args...)) + +} + +// V reports whether verbosity level l is at least the requested verbose level. +func (pl *PrefixLogger) V(l int) bool { + // TODO(6044): Refactor interfaces LoggerV2 and DepthLogger, and maybe + // rewrite PrefixLogger a little to ensure that we don't use the global + // `Logger` here, and instead use the `logger` field. + return Logger.V(l) } // NewPrefixLogger creates a prefix logger with the given prefix. diff --git a/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go b/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go index 200b115c..aa97273e 100644 --- a/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go +++ b/vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go @@ -31,26 +31,65 @@ var ( mu sync.Mutex ) +// Int implements rand.Int on the grpcrand global source. +func Int() int { + mu.Lock() + defer mu.Unlock() + return r.Int() +} + // Int63n implements rand.Int63n on the grpcrand global source. func Int63n(n int64) int64 { mu.Lock() - res := r.Int63n(n) - mu.Unlock() - return res + defer mu.Unlock() + return r.Int63n(n) } // Intn implements rand.Intn on the grpcrand global source. func Intn(n int) int { mu.Lock() - res := r.Intn(n) - mu.Unlock() - return res + defer mu.Unlock() + return r.Intn(n) +} + +// Int31n implements rand.Int31n on the grpcrand global source. +func Int31n(n int32) int32 { + mu.Lock() + defer mu.Unlock() + return r.Int31n(n) } // Float64 implements rand.Float64 on the grpcrand global source. func Float64() float64 { mu.Lock() - res := r.Float64() - mu.Unlock() - return res + defer mu.Unlock() + return r.Float64() +} + +// Uint64 implements rand.Uint64 on the grpcrand global source. +func Uint64() uint64 { + mu.Lock() + defer mu.Unlock() + return r.Uint64() +} + +// Uint32 implements rand.Uint32 on the grpcrand global source. +func Uint32() uint32 { + mu.Lock() + defer mu.Unlock() + return r.Uint32() +} + +// ExpFloat64 implements rand.ExpFloat64 on the grpcrand global source. +func ExpFloat64() float64 { + mu.Lock() + defer mu.Unlock() + return r.ExpFloat64() +} + +// Shuffle implements rand.Shuffle on the grpcrand global source. +var Shuffle = func(n int, f func(int, int)) { + mu.Lock() + defer mu.Unlock() + r.Shuffle(n, f) } diff --git a/vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go b/vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go new file mode 100644 index 00000000..37b8d411 --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/grpcsync/callback_serializer.go @@ -0,0 +1,119 @@ +/* + * + * Copyright 2022 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpcsync + +import ( + "context" + "sync" + + "google.golang.org/grpc/internal/buffer" +) + +// CallbackSerializer provides a mechanism to schedule callbacks in a +// synchronized manner. It provides a FIFO guarantee on the order of execution +// of scheduled callbacks. New callbacks can be scheduled by invoking the +// Schedule() method. +// +// This type is safe for concurrent access. +type CallbackSerializer struct { + // Done is closed once the serializer is shut down completely, i.e all + // scheduled callbacks are executed and the serializer has deallocated all + // its resources. + Done chan struct{} + + callbacks *buffer.Unbounded + closedMu sync.Mutex + closed bool +} + +// NewCallbackSerializer returns a new CallbackSerializer instance. The provided +// context will be passed to the scheduled callbacks. Users should cancel the +// provided context to shutdown the CallbackSerializer. It is guaranteed that no +// callbacks will be added once this context is canceled, and any pending un-run +// callbacks will be executed before the serializer is shut down. +func NewCallbackSerializer(ctx context.Context) *CallbackSerializer { + t := &CallbackSerializer{ + Done: make(chan struct{}), + callbacks: buffer.NewUnbounded(), + } + go t.run(ctx) + return t +} + +// Schedule adds a callback to be scheduled after existing callbacks are run. +// +// Callbacks are expected to honor the context when performing any blocking +// operations, and should return early when the context is canceled. +// +// Return value indicates if the callback was successfully added to the list of +// callbacks to be executed by the serializer. It is not possible to add +// callbacks once the context passed to NewCallbackSerializer is cancelled. +func (t *CallbackSerializer) Schedule(f func(ctx context.Context)) bool { + t.closedMu.Lock() + defer t.closedMu.Unlock() + + if t.closed { + return false + } + t.callbacks.Put(f) + return true +} + +func (t *CallbackSerializer) run(ctx context.Context) { + var backlog []func(context.Context) + + defer close(t.Done) + for ctx.Err() == nil { + select { + case <-ctx.Done(): + // Do nothing here. Next iteration of the for loop will not happen, + // since ctx.Err() would be non-nil. + case callback, ok := <-t.callbacks.Get(): + if !ok { + return + } + t.callbacks.Load() + callback.(func(ctx context.Context))(ctx) + } + } + + // Fetch pending callbacks if any, and execute them before returning from + // this method and closing t.Done. + t.closedMu.Lock() + t.closed = true + backlog = t.fetchPendingCallbacks() + t.callbacks.Close() + t.closedMu.Unlock() + for _, b := range backlog { + b(ctx) + } +} + +func (t *CallbackSerializer) fetchPendingCallbacks() []func(context.Context) { + var backlog []func(context.Context) + for { + select { + case b := <-t.callbacks.Get(): + backlog = append(backlog, b.(func(context.Context))) + t.callbacks.Load() + default: + return backlog + } + } +} diff --git a/vendor/google.golang.org/grpc/internal/credentials/spiffe_appengine.go b/vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go similarity index 67% rename from vendor/google.golang.org/grpc/internal/credentials/spiffe_appengine.go rename to vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go index af6f5771..6635f7bc 100644 --- a/vendor/google.golang.org/grpc/internal/credentials/spiffe_appengine.go +++ b/vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go @@ -1,8 +1,6 @@ -// +build appengine - /* * - * Copyright 2020 gRPC authors. + * Copyright 2022 gRPC authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -18,14 +16,17 @@ * */ -package credentials +package grpcsync import ( - "crypto/tls" - "net/url" + "sync" ) -// SPIFFEIDFromState is a no-op for appengine builds. -func SPIFFEIDFromState(state tls.ConnectionState) *url.URL { - return nil +// OnceFunc returns a function wrapping f which ensures f is only executed +// once even if the returned function is executed multiple times. +func OnceFunc(f func()) func() { + var once sync.Once + return func() { + once.Do(f) + } } diff --git a/vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go b/vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go new file mode 100644 index 00000000..f58b5ffa --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/grpcsync/pubsub.go @@ -0,0 +1,136 @@ +/* + * + * Copyright 2023 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpcsync + +import ( + "context" + "sync" +) + +// Subscriber represents an entity that is subscribed to messages published on +// a PubSub. It wraps the callback to be invoked by the PubSub when a new +// message is published. +type Subscriber interface { + // OnMessage is invoked when a new message is published. Implementations + // must not block in this method. + OnMessage(msg interface{}) +} + +// PubSub is a simple one-to-many publish-subscribe system that supports +// messages of arbitrary type. It guarantees that messages are delivered in +// the same order in which they were published. +// +// Publisher invokes the Publish() method to publish new messages, while +// subscribers interested in receiving these messages register a callback +// via the Subscribe() method. +// +// Once a PubSub is stopped, no more messages can be published, and +// it is guaranteed that no more subscriber callback will be invoked. +type PubSub struct { + cs *CallbackSerializer + cancel context.CancelFunc + + // Access to the below fields are guarded by this mutex. + mu sync.Mutex + msg interface{} + subscribers map[Subscriber]bool + stopped bool +} + +// NewPubSub returns a new PubSub instance. +func NewPubSub() *PubSub { + ctx, cancel := context.WithCancel(context.Background()) + return &PubSub{ + cs: NewCallbackSerializer(ctx), + cancel: cancel, + subscribers: map[Subscriber]bool{}, + } +} + +// Subscribe registers the provided Subscriber to the PubSub. +// +// If the PubSub contains a previously published message, the Subscriber's +// OnMessage() callback will be invoked asynchronously with the existing +// message to begin with, and subsequently for every newly published message. +// +// The caller is responsible for invoking the returned cancel function to +// unsubscribe itself from the PubSub. +func (ps *PubSub) Subscribe(sub Subscriber) (cancel func()) { + ps.mu.Lock() + defer ps.mu.Unlock() + + if ps.stopped { + return func() {} + } + + ps.subscribers[sub] = true + + if ps.msg != nil { + msg := ps.msg + ps.cs.Schedule(func(context.Context) { + ps.mu.Lock() + defer ps.mu.Unlock() + if !ps.subscribers[sub] { + return + } + sub.OnMessage(msg) + }) + } + + return func() { + ps.mu.Lock() + defer ps.mu.Unlock() + delete(ps.subscribers, sub) + } +} + +// Publish publishes the provided message to the PubSub, and invokes +// callbacks registered by subscribers asynchronously. +func (ps *PubSub) Publish(msg interface{}) { + ps.mu.Lock() + defer ps.mu.Unlock() + + if ps.stopped { + return + } + + ps.msg = msg + for sub := range ps.subscribers { + s := sub + ps.cs.Schedule(func(context.Context) { + ps.mu.Lock() + defer ps.mu.Unlock() + if !ps.subscribers[s] { + return + } + s.OnMessage(msg) + }) + } +} + +// Stop shuts down the PubSub and releases any resources allocated by it. +// It is guaranteed that no subscriber callbacks would be invoked once this +// method returns. +func (ps *PubSub) Stop() { + ps.mu.Lock() + defer ps.mu.Unlock() + ps.stopped = true + + ps.cancel() +} diff --git a/vendor/google.golang.org/grpc/internal/grpcutil/compressor.go b/vendor/google.golang.org/grpc/internal/grpcutil/compressor.go new file mode 100644 index 00000000..9f409096 --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/grpcutil/compressor.go @@ -0,0 +1,47 @@ +/* + * + * Copyright 2022 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpcutil + +import ( + "strings" + + "google.golang.org/grpc/internal/envconfig" +) + +// RegisteredCompressorNames holds names of the registered compressors. +var RegisteredCompressorNames []string + +// IsCompressorNameRegistered returns true when name is available in registry. +func IsCompressorNameRegistered(name string) bool { + for _, compressor := range RegisteredCompressorNames { + if compressor == name { + return true + } + } + return false +} + +// RegisteredCompressors returns a string of registered compressor names +// separated by comma. +func RegisteredCompressors() string { + if !envconfig.AdvertiseCompressors { + return "" + } + return strings.Join(RegisteredCompressorNames, ",") +} diff --git a/vendor/google.golang.org/grpc/internal/credentials/syscallconn_appengine.go b/vendor/google.golang.org/grpc/internal/grpcutil/grpcutil.go similarity index 72% rename from vendor/google.golang.org/grpc/internal/credentials/syscallconn_appengine.go rename to vendor/google.golang.org/grpc/internal/grpcutil/grpcutil.go index a6144cd6..e2f948e8 100644 --- a/vendor/google.golang.org/grpc/internal/credentials/syscallconn_appengine.go +++ b/vendor/google.golang.org/grpc/internal/grpcutil/grpcutil.go @@ -1,8 +1,6 @@ -// +build appengine - /* * - * Copyright 2018 gRPC authors. + * Copyright 2021 gRPC authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -18,13 +16,5 @@ * */ -package credentials - -import ( - "net" -) - -// WrapSyscallConn returns newConn on appengine. -func WrapSyscallConn(rawConn, newConn net.Conn) net.Conn { - return newConn -} +// Package grpcutil provides utility functions used across the gRPC codebase. +package grpcutil diff --git a/vendor/google.golang.org/grpc/internal/grpcutil/method.go b/vendor/google.golang.org/grpc/internal/grpcutil/method.go index 4e747506..ec62b477 100644 --- a/vendor/google.golang.org/grpc/internal/grpcutil/method.go +++ b/vendor/google.golang.org/grpc/internal/grpcutil/method.go @@ -25,7 +25,6 @@ import ( // ParseMethod splits service and method from the input. It expects format // "/service/method". -// func ParseMethod(methodName string) (service, method string, _ error) { if !strings.HasPrefix(methodName, "/") { return "", "", errors.New("invalid method name: should start with /") @@ -39,6 +38,11 @@ func ParseMethod(methodName string) (service, method string, _ error) { return methodName[:pos], methodName[pos+1:], nil } +// baseContentType is the base content-type for gRPC. This is a valid +// content-type on it's own, but can also include a content-subtype such as +// "proto" as a suffix after "+" or ";". See +// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests +// for more details. const baseContentType = "application/grpc" // ContentSubtype returns the content-subtype for the given content-type. The diff --git a/vendor/google.golang.org/grpc/internal/resolver/dns/go113.go b/vendor/google.golang.org/grpc/internal/grpcutil/regex.go similarity index 63% rename from vendor/google.golang.org/grpc/internal/resolver/dns/go113.go rename to vendor/google.golang.org/grpc/internal/grpcutil/regex.go index 8783a8cf..7a092b2b 100644 --- a/vendor/google.golang.org/grpc/internal/resolver/dns/go113.go +++ b/vendor/google.golang.org/grpc/internal/grpcutil/regex.go @@ -1,8 +1,6 @@ -// +build go1.13 - /* * - * Copyright 2019 gRPC authors. + * Copyright 2021 gRPC authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -18,16 +16,16 @@ * */ -package dns +package grpcutil -import "net" +import "regexp" -func init() { - filterError = func(err error) error { - if dnsErr, ok := err.(*net.DNSError); ok && dnsErr.IsNotFound { - // The name does not exist; not an error. - return nil - } - return err +// FullMatchWithRegex returns whether the full text matches the regex provided. +func FullMatchWithRegex(re *regexp.Regexp, text string) bool { + if len(text) == 0 { + return re.MatchString(text) } + re.Longest() + rem := re.FindString(text) + return len(rem) == len(text) } diff --git a/vendor/google.golang.org/grpc/internal/grpcutil/target.go b/vendor/google.golang.org/grpc/internal/grpcutil/target.go deleted file mode 100644 index 8833021d..00000000 --- a/vendor/google.golang.org/grpc/internal/grpcutil/target.go +++ /dev/null @@ -1,89 +0,0 @@ -/* - * - * Copyright 2020 gRPC authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - */ - -// Package grpcutil provides a bunch of utility functions to be used across the -// gRPC codebase. -package grpcutil - -import ( - "strings" - - "google.golang.org/grpc/resolver" -) - -// split2 returns the values from strings.SplitN(s, sep, 2). -// If sep is not found, it returns ("", "", false) instead. -func split2(s, sep string) (string, string, bool) { - spl := strings.SplitN(s, sep, 2) - if len(spl) < 2 { - return "", "", false - } - return spl[0], spl[1], true -} - -// ParseTarget splits target into a resolver.Target struct containing scheme, -// authority and endpoint. skipUnixColonParsing indicates that the parse should -// not parse "unix:[path]" cases. This should be true in cases where a custom -// dialer is present, to prevent a behavior change. -// -// If target is not a valid scheme://authority/endpoint as specified in -// https://github.com/grpc/grpc/blob/master/doc/naming.md, -// it returns {Endpoint: target}. -func ParseTarget(target string, skipUnixColonParsing bool) (ret resolver.Target) { - var ok bool - if strings.HasPrefix(target, "unix-abstract:") { - if strings.HasPrefix(target, "unix-abstract://") { - // Maybe, with Authority specified, try to parse it - var remain string - ret.Scheme, remain, _ = split2(target, "://") - ret.Authority, ret.Endpoint, ok = split2(remain, "/") - if !ok { - // No Authority, add the "//" back - ret.Endpoint = "//" + remain - } else { - // Found Authority, add the "/" back - ret.Endpoint = "/" + ret.Endpoint - } - } else { - // Without Authority specified, split target on ":" - ret.Scheme, ret.Endpoint, _ = split2(target, ":") - } - return ret - } - ret.Scheme, ret.Endpoint, ok = split2(target, "://") - if !ok { - if strings.HasPrefix(target, "unix:") && !skipUnixColonParsing { - // Handle the "unix:[local/path]" and "unix:[/absolute/path]" cases, - // because splitting on :// only handles the - // "unix://[/absolute/path]" case. Only handle if the dialer is nil, - // to avoid a behavior change with custom dialers. - return resolver.Target{Scheme: "unix", Endpoint: target[len("unix:"):]} - } - return resolver.Target{Endpoint: target} - } - ret.Authority, ret.Endpoint, ok = split2(ret.Endpoint, "/") - if !ok { - return resolver.Target{Endpoint: target} - } - if ret.Scheme == "unix" { - // Add the "/" back in the unix case, so the unix resolver receives the - // actual endpoint in the "unix://[/absolute/path]" case. - ret.Endpoint = "/" + ret.Endpoint - } - return ret -} diff --git a/vendor/google.golang.org/grpc/internal/internal.go b/vendor/google.golang.org/grpc/internal/internal.go index 1b596bf3..42ff39c8 100644 --- a/vendor/google.golang.org/grpc/internal/internal.go +++ b/vendor/google.golang.org/grpc/internal/internal.go @@ -38,11 +38,10 @@ var ( // KeepaliveMinPingTime is the minimum ping interval. This must be 10s by // default, but tests may wish to set it lower for convenience. KeepaliveMinPingTime = 10 * time.Second - // ParseServiceConfigForTesting is for creating a fake - // ClientConn for resolver testing only - ParseServiceConfigForTesting interface{} // func(string) *serviceconfig.ParseResult + // ParseServiceConfig parses a JSON representation of the service config. + ParseServiceConfig interface{} // func(string) *serviceconfig.ParseResult // EqualServiceConfigForTesting is for testing service config generation and - // parsing. Both a and b should be returned by ParseServiceConfigForTesting. + // parsing. Both a and b should be returned by ParseServiceConfig. // This function compares the config without rawJSON stripped, in case the // there's difference in white space. EqualServiceConfigForTesting func(a, b serviceconfig.Config) bool @@ -59,11 +58,112 @@ var ( // gRPC server. An xDS-enabled server needs to know what type of credentials // is configured on the underlying gRPC server. This is set by server.go. GetServerCredentials interface{} // func (*grpc.Server) credentials.TransportCredentials + // CanonicalString returns the canonical string of the code defined here: + // https://github.com/grpc/grpc/blob/master/doc/statuscodes.md. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + CanonicalString interface{} // func (codes.Code) string // DrainServerTransports initiates a graceful close of existing connections // on a gRPC server accepted on the provided listener address. An // xDS-enabled server invokes this method on a grpc.Server when a particular // listener moves to "not-serving" mode. DrainServerTransports interface{} // func(*grpc.Server, string) + // AddGlobalServerOptions adds an array of ServerOption that will be + // effective globally for newly created servers. The priority will be: 1. + // user-provided; 2. this method; 3. default values. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + AddGlobalServerOptions interface{} // func(opt ...ServerOption) + // ClearGlobalServerOptions clears the array of extra ServerOption. This + // method is useful in testing and benchmarking. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + ClearGlobalServerOptions func() + // AddGlobalDialOptions adds an array of DialOption that will be effective + // globally for newly created client channels. The priority will be: 1. + // user-provided; 2. this method; 3. default values. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + AddGlobalDialOptions interface{} // func(opt ...DialOption) + // DisableGlobalDialOptions returns a DialOption that prevents the + // ClientConn from applying the global DialOptions (set via + // AddGlobalDialOptions). + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + DisableGlobalDialOptions interface{} // func() grpc.DialOption + // ClearGlobalDialOptions clears the array of extra DialOption. This + // method is useful in testing and benchmarking. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + ClearGlobalDialOptions func() + // JoinDialOptions combines the dial options passed as arguments into a + // single dial option. + JoinDialOptions interface{} // func(...grpc.DialOption) grpc.DialOption + // JoinServerOptions combines the server options passed as arguments into a + // single server option. + JoinServerOptions interface{} // func(...grpc.ServerOption) grpc.ServerOption + + // WithBinaryLogger returns a DialOption that specifies the binary logger + // for a ClientConn. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + WithBinaryLogger interface{} // func(binarylog.Logger) grpc.DialOption + // BinaryLogger returns a ServerOption that can set the binary logger for a + // server. + // + // This is used in the 1.0 release of gcp/observability, and thus must not be + // deleted or changed. + BinaryLogger interface{} // func(binarylog.Logger) grpc.ServerOption + + // NewXDSResolverWithConfigForTesting creates a new xds resolver builder using + // the provided xds bootstrap config instead of the global configuration from + // the supported environment variables. The resolver.Builder is meant to be + // used in conjunction with the grpc.WithResolvers DialOption. + // + // Testing Only + // + // This function should ONLY be used for testing and may not work with some + // other features, including the CSDS service. + NewXDSResolverWithConfigForTesting interface{} // func([]byte) (resolver.Builder, error) + + // RegisterRLSClusterSpecifierPluginForTesting registers the RLS Cluster + // Specifier Plugin for testing purposes, regardless of the XDSRLS environment + // variable. + // + // TODO: Remove this function once the RLS env var is removed. + RegisterRLSClusterSpecifierPluginForTesting func() + + // UnregisterRLSClusterSpecifierPluginForTesting unregisters the RLS Cluster + // Specifier Plugin for testing purposes. This is needed because there is no way + // to unregister the RLS Cluster Specifier Plugin after registering it solely + // for testing purposes using RegisterRLSClusterSpecifierPluginForTesting(). + // + // TODO: Remove this function once the RLS env var is removed. + UnregisterRLSClusterSpecifierPluginForTesting func() + + // RegisterRBACHTTPFilterForTesting registers the RBAC HTTP Filter for testing + // purposes, regardless of the RBAC environment variable. + // + // TODO: Remove this function once the RBAC env var is removed. + RegisterRBACHTTPFilterForTesting func() + + // UnregisterRBACHTTPFilterForTesting unregisters the RBAC HTTP Filter for + // testing purposes. This is needed because there is no way to unregister the + // HTTP Filter after registering it solely for testing purposes using + // RegisterRBACHTTPFilterForTesting(). + // + // TODO: Remove this function once the RBAC env var is removed. + UnregisterRBACHTTPFilterForTesting func() + + // ORCAAllowAnyMinReportingInterval is for examples/orca use ONLY. + ORCAAllowAnyMinReportingInterval interface{} // func(so *orca.ServiceOptions) ) // HealthChecker defines the signature of the client-side LB channel health checking function. @@ -86,3 +186,9 @@ const ( // that supports backend returned by grpclb balancer. CredsBundleModeBackendFromBalancer = "backend-from-balancer" ) + +// RLSLoadBalancingPolicyName is the name of the RLS LB policy. +// +// It currently has an experimental suffix which would be removed once +// end-to-end testing of the policy is completed. +const RLSLoadBalancingPolicyName = "rls_experimental" diff --git a/vendor/google.golang.org/grpc/internal/metadata/metadata.go b/vendor/google.golang.org/grpc/internal/metadata/metadata.go index 30226261..c82e608e 100644 --- a/vendor/google.golang.org/grpc/internal/metadata/metadata.go +++ b/vendor/google.golang.org/grpc/internal/metadata/metadata.go @@ -22,6 +22,9 @@ package metadata import ( + "fmt" + "strings" + "google.golang.org/grpc/metadata" "google.golang.org/grpc/resolver" ) @@ -30,14 +33,38 @@ type mdKeyType string const mdKey = mdKeyType("grpc.internal.address.metadata") +type mdValue metadata.MD + +func (m mdValue) Equal(o interface{}) bool { + om, ok := o.(mdValue) + if !ok { + return false + } + if len(m) != len(om) { + return false + } + for k, v := range m { + ov := om[k] + if len(ov) != len(v) { + return false + } + for i, ve := range v { + if ov[i] != ve { + return false + } + } + } + return true +} + // Get returns the metadata of addr. func Get(addr resolver.Address) metadata.MD { attrs := addr.Attributes if attrs == nil { return nil } - md, _ := attrs.Value(mdKey).(metadata.MD) - return md + md, _ := attrs.Value(mdKey).(mdValue) + return metadata.MD(md) } // Set sets (overrides) the metadata in addr. @@ -45,6 +72,61 @@ func Get(addr resolver.Address) metadata.MD { // When a SubConn is created with this address, the RPCs sent on it will all // have this metadata. func Set(addr resolver.Address, md metadata.MD) resolver.Address { - addr.Attributes = addr.Attributes.WithValues(mdKey, md) + addr.Attributes = addr.Attributes.WithValue(mdKey, mdValue(md)) return addr } + +// Validate validates every pair in md with ValidatePair. +func Validate(md metadata.MD) error { + for k, vals := range md { + if err := ValidatePair(k, vals...); err != nil { + return err + } + } + return nil +} + +// hasNotPrintable return true if msg contains any characters which are not in %x20-%x7E +func hasNotPrintable(msg string) bool { + // for i that saving a conversion if not using for range + for i := 0; i < len(msg); i++ { + if msg[i] < 0x20 || msg[i] > 0x7E { + return true + } + } + return false +} + +// ValidatePair validate a key-value pair with the following rules (the pseudo-header will be skipped) : +// +// - key must contain one or more characters. +// - the characters in the key must be contained in [0-9 a-z _ - .]. +// - if the key ends with a "-bin" suffix, no validation of the corresponding value is performed. +// - the characters in the every value must be printable (in [%x20-%x7E]). +func ValidatePair(key string, vals ...string) error { + // key should not be empty + if key == "" { + return fmt.Errorf("there is an empty key in the header") + } + // pseudo-header will be ignored + if key[0] == ':' { + return nil + } + // check key, for i that saving a conversion if not using for range + for i := 0; i < len(key); i++ { + r := key[i] + if !(r >= 'a' && r <= 'z') && !(r >= '0' && r <= '9') && r != '.' && r != '-' && r != '_' { + return fmt.Errorf("header key %q contains illegal characters not in [0-9a-z-_.]", key) + } + } + if strings.HasSuffix(key, "-bin") { + return nil + } + // check value + for _, val := range vals { + if hasNotPrintable(val) { + return fmt.Errorf("header key %q contains value with non-printable ASCII characters", key) + } + } + return nil +} diff --git a/vendor/google.golang.org/grpc/internal/pretty/pretty.go b/vendor/google.golang.org/grpc/internal/pretty/pretty.go new file mode 100644 index 00000000..0177af4b --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/pretty/pretty.go @@ -0,0 +1,82 @@ +/* + * + * Copyright 2021 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package pretty defines helper functions to pretty-print structs for logging. +package pretty + +import ( + "bytes" + "encoding/json" + "fmt" + + "github.com/golang/protobuf/jsonpb" + protov1 "github.com/golang/protobuf/proto" + "google.golang.org/protobuf/encoding/protojson" + protov2 "google.golang.org/protobuf/proto" +) + +const jsonIndent = " " + +// ToJSON marshals the input into a json string. +// +// If marshal fails, it falls back to fmt.Sprintf("%+v"). +func ToJSON(e interface{}) string { + switch ee := e.(type) { + case protov1.Message: + mm := jsonpb.Marshaler{Indent: jsonIndent} + ret, err := mm.MarshalToString(ee) + if err != nil { + // This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2 + // messages are not imported, and this will fail because the message + // is not found. + return fmt.Sprintf("%+v", ee) + } + return ret + case protov2.Message: + mm := protojson.MarshalOptions{ + Multiline: true, + Indent: jsonIndent, + } + ret, err := mm.Marshal(ee) + if err != nil { + // This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2 + // messages are not imported, and this will fail because the message + // is not found. + return fmt.Sprintf("%+v", ee) + } + return string(ret) + default: + ret, err := json.MarshalIndent(ee, "", jsonIndent) + if err != nil { + return fmt.Sprintf("%+v", ee) + } + return string(ret) + } +} + +// FormatJSON formats the input json bytes with indentation. +// +// If Indent fails, it returns the unchanged input as string. +func FormatJSON(b []byte) string { + var out bytes.Buffer + err := json.Indent(&out, b, "", jsonIndent) + if err != nil { + return string(b) + } + return out.String() +} diff --git a/vendor/google.golang.org/grpc/internal/resolver/config_selector.go b/vendor/google.golang.org/grpc/internal/resolver/config_selector.go index 5e7f3670..c7a18a94 100644 --- a/vendor/google.golang.org/grpc/internal/resolver/config_selector.go +++ b/vendor/google.golang.org/grpc/internal/resolver/config_selector.go @@ -117,9 +117,12 @@ type ClientInterceptor interface { NewStream(ctx context.Context, ri RPCInfo, done func(), newStream func(ctx context.Context, done func()) (ClientStream, error)) (ClientStream, error) } -// ServerInterceptor is unimplementable; do not use. +// ServerInterceptor is an interceptor for incoming RPC's on gRPC server side. type ServerInterceptor interface { - notDefined() + // AllowRPC checks if an incoming RPC is allowed to proceed based on + // information about connection RPC was received on, and HTTP Headers. This + // information will be piped into context. + AllowRPC(ctx context.Context) error // TODO: Make this a real interceptor for filters such as rate limiting. } type csKeyType string @@ -129,7 +132,7 @@ const csKey = csKeyType("grpc.internal.resolver.configSelector") // SetConfigSelector sets the config selector in state and returns the new // state. func SetConfigSelector(state resolver.State, cs ConfigSelector) resolver.State { - state.Attributes = state.Attributes.WithValues(csKey, cs) + state.Attributes = state.Attributes.WithValue(csKey, cs) return state } diff --git a/vendor/google.golang.org/grpc/internal/resolver/dns/dns_resolver.go b/vendor/google.golang.org/grpc/internal/resolver/dns/dns_resolver.go index 03825bbe..99e1e5b3 100644 --- a/vendor/google.golang.org/grpc/internal/resolver/dns/dns_resolver.go +++ b/vendor/google.golang.org/grpc/internal/resolver/dns/dns_resolver.go @@ -62,7 +62,8 @@ const ( defaultPort = "443" defaultDNSSvrPort = "53" golang = "GO" - // txtPrefix is the prefix string to be prepended to the host name for txt record lookup. + // txtPrefix is the prefix string to be prepended to the host name for txt + // record lookup. txtPrefix = "_grpc_config." // In DNS, service config is encoded in a TXT record via the mechanism // described in RFC-1464 using the attribute name grpc_config. @@ -86,14 +87,14 @@ var ( minDNSResRate = 30 * time.Second ) -var customAuthorityDialler = func(authority string) func(ctx context.Context, network, address string) (net.Conn, error) { - return func(ctx context.Context, network, address string) (net.Conn, error) { +var addressDialer = func(address string) func(context.Context, string, string) (net.Conn, error) { + return func(ctx context.Context, network, _ string) (net.Conn, error) { var dialer net.Dialer - return dialer.DialContext(ctx, network, authority) + return dialer.DialContext(ctx, network, address) } } -var customAuthorityResolver = func(authority string) (netResolver, error) { +var newNetResolver = func(authority string) (netResolver, error) { host, port, err := parseTarget(authority, defaultDNSSvrPort) if err != nil { return nil, err @@ -103,7 +104,7 @@ var customAuthorityResolver = func(authority string) (netResolver, error) { return &net.Resolver{ PreferGo: true, - Dial: customAuthorityDialler(authorityWithPort), + Dial: addressDialer(authorityWithPort), }, nil } @@ -114,9 +115,10 @@ func NewBuilder() resolver.Builder { type dnsBuilder struct{} -// Build creates and starts a DNS resolver that watches the name resolution of the target. +// Build creates and starts a DNS resolver that watches the name resolution of +// the target. func (b *dnsBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) { - host, port, err := parseTarget(target.Endpoint, defaultPort) + host, port, err := parseTarget(target.Endpoint(), defaultPort) if err != nil { return nil, err } @@ -140,10 +142,10 @@ func (b *dnsBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts disableServiceConfig: opts.DisableServiceConfig, } - if target.Authority == "" { + if target.URL.Host == "" { d.resolver = defaultResolver } else { - d.resolver, err = customAuthorityResolver(target.Authority) + d.resolver, err = newNetResolver(target.URL.Host) if err != nil { return nil, err } @@ -180,19 +182,22 @@ type dnsResolver struct { ctx context.Context cancel context.CancelFunc cc resolver.ClientConn - // rn channel is used by ResolveNow() to force an immediate resolution of the target. + // rn channel is used by ResolveNow() to force an immediate resolution of the + // target. rn chan struct{} - // wg is used to enforce Close() to return after the watcher() goroutine has finished. - // Otherwise, data race will be possible. [Race Example] in dns_resolver_test we - // replace the real lookup functions with mocked ones to facilitate testing. - // If Close() doesn't wait for watcher() goroutine finishes, race detector sometimes - // will warns lookup (READ the lookup function pointers) inside watcher() goroutine - // has data race with replaceNetFunc (WRITE the lookup function pointers). + // wg is used to enforce Close() to return after the watcher() goroutine has + // finished. Otherwise, data race will be possible. [Race Example] in + // dns_resolver_test we replace the real lookup functions with mocked ones to + // facilitate testing. If Close() doesn't wait for watcher() goroutine + // finishes, race detector sometimes will warns lookup (READ the lookup + // function pointers) inside watcher() goroutine has data race with + // replaceNetFunc (WRITE the lookup function pointers). wg sync.WaitGroup disableServiceConfig bool } -// ResolveNow invoke an immediate resolution of the target that this dnsResolver watches. +// ResolveNow invoke an immediate resolution of the target that this +// dnsResolver watches. func (d *dnsResolver) ResolveNow(resolver.ResolveNowOptions) { select { case d.rn <- struct{}{}: @@ -220,8 +225,8 @@ func (d *dnsResolver) watcher() { var timer *time.Timer if err == nil { - // Success resolving, wait for the next ResolveNow. However, also wait 30 seconds at the very least - // to prevent constantly re-resolving. + // Success resolving, wait for the next ResolveNow. However, also wait 30 + // seconds at the very least to prevent constantly re-resolving. backoffIndex = 1 timer = newTimerDNSResRate(minDNSResRate) select { @@ -231,7 +236,8 @@ func (d *dnsResolver) watcher() { case <-d.rn: } } else { - // Poll on an error found in DNS Resolver or an error received from ClientConn. + // Poll on an error found in DNS Resolver or an error received from + // ClientConn. timer = newTimer(backoff.DefaultExponential.Backoff(backoffIndex)) backoffIndex++ } @@ -277,18 +283,14 @@ func (d *dnsResolver) lookupSRV() ([]resolver.Address, error) { return newAddrs, nil } -var filterError = func(err error) error { - if dnsErr, ok := err.(*net.DNSError); ok && !dnsErr.IsTimeout && !dnsErr.IsTemporary { +func handleDNSError(err error, lookupType string) error { + dnsErr, ok := err.(*net.DNSError) + if ok && !dnsErr.IsTimeout && !dnsErr.IsTemporary { // Timeouts and temporary errors should be communicated to gRPC to // attempt another DNS query (with backoff). Other errors should be // suppressed (they may represent the absence of a TXT record). return nil } - return err -} - -func handleDNSError(err error, lookupType string) error { - err = filterError(err) if err != nil { err = fmt.Errorf("dns: %v record lookup error: %v", lookupType, err) logger.Info(err) @@ -312,10 +314,12 @@ func (d *dnsResolver) lookupTXT() *serviceconfig.ParseResult { res += s } - // TXT record must have "grpc_config=" attribute in order to be used as service config. + // TXT record must have "grpc_config=" attribute in order to be used as + // service config. if !strings.HasPrefix(res, txtAttribute) { logger.Warningf("dns: TXT record %v missing %v attribute", res, txtAttribute) - // This is not an error; it is the equivalent of not having a service config. + // This is not an error; it is the equivalent of not having a service + // config. return nil } sc := canaryingSC(strings.TrimPrefix(res, txtAttribute)) @@ -323,12 +327,12 @@ func (d *dnsResolver) lookupTXT() *serviceconfig.ParseResult { } func (d *dnsResolver) lookupHost() ([]resolver.Address, error) { - var newAddrs []resolver.Address addrs, err := d.resolver.LookupHost(d.ctx, d.host) if err != nil { err = handleDNSError(err, "A") return nil, err } + newAddrs := make([]resolver.Address, 0, len(addrs)) for _, a := range addrs { ip, ok := formatIP(a) if !ok { @@ -357,9 +361,10 @@ func (d *dnsResolver) lookup() (*resolver.State, error) { return &state, nil } -// formatIP returns ok = false if addr is not a valid textual representation of an IP address. -// If addr is an IPv4 address, return the addr and ok = true. -// If addr is an IPv6 address, return the addr enclosed in square brackets and ok = true. +// formatIP returns ok = false if addr is not a valid textual representation of +// an IP address. If addr is an IPv4 address, return the addr and ok = true. +// If addr is an IPv6 address, return the addr enclosed in square brackets and +// ok = true. func formatIP(addr string) (addrIP string, ok bool) { ip := net.ParseIP(addr) if ip == nil { @@ -371,10 +376,10 @@ func formatIP(addr string) (addrIP string, ok bool) { return "[" + addr + "]", true } -// parseTarget takes the user input target string and default port, returns formatted host and port info. -// If target doesn't specify a port, set the port to be the defaultPort. -// If target is in IPv6 format and host-name is enclosed in square brackets, brackets -// are stripped when setting the host. +// parseTarget takes the user input target string and default port, returns +// formatted host and port info. If target doesn't specify a port, set the port +// to be the defaultPort. If target is in IPv6 format and host-name is enclosed +// in square brackets, brackets are stripped when setting the host. // examples: // target: "www.google.com" defaultPort: "443" returns host: "www.google.com", port: "443" // target: "ipv4-host:80" defaultPort: "443" returns host: "ipv4-host", port: "80" @@ -390,12 +395,14 @@ func parseTarget(target, defaultPort string) (host, port string, err error) { } if host, port, err = net.SplitHostPort(target); err == nil { if port == "" { - // If the port field is empty (target ends with colon), e.g. "[::1]:", this is an error. + // If the port field is empty (target ends with colon), e.g. "[::1]:", + // this is an error. return "", "", errEndsWithColon } // target has port, i.e ipv4-host:port, [ipv6-host]:port, host-name:port if host == "" { - // Keep consistent with net.Dial(): If the host is empty, as in ":80", the local system is assumed. + // Keep consistent with net.Dial(): If the host is empty, as in ":80", + // the local system is assumed. host = "localhost" } return host, port, nil diff --git a/vendor/google.golang.org/grpc/internal/resolver/passthrough/passthrough.go b/vendor/google.golang.org/grpc/internal/resolver/passthrough/passthrough.go index 520d9229..afac5657 100644 --- a/vendor/google.golang.org/grpc/internal/resolver/passthrough/passthrough.go +++ b/vendor/google.golang.org/grpc/internal/resolver/passthrough/passthrough.go @@ -20,13 +20,20 @@ // name without scheme back to gRPC as resolved address. package passthrough -import "google.golang.org/grpc/resolver" +import ( + "errors" + + "google.golang.org/grpc/resolver" +) const scheme = "passthrough" type passthroughBuilder struct{} func (*passthroughBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) { + if target.Endpoint() == "" && opts.Dialer == nil { + return nil, errors.New("passthrough: received empty target in Build()") + } r := &passthroughResolver{ target: target, cc: cc, @@ -45,7 +52,7 @@ type passthroughResolver struct { } func (r *passthroughResolver) start() { - r.cc.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: r.target.Endpoint}}}) + r.cc.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: r.target.Endpoint()}}}) } func (*passthroughResolver) ResolveNow(o resolver.ResolveNowOptions) {} diff --git a/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go b/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go index 0d5a811d..16091168 100644 --- a/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go +++ b/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go @@ -34,13 +34,24 @@ type builder struct { } func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, _ resolver.BuildOptions) (resolver.Resolver, error) { - if target.Authority != "" { - return nil, fmt.Errorf("invalid (non-empty) authority: %v", target.Authority) + if target.URL.Host != "" { + return nil, fmt.Errorf("invalid (non-empty) authority: %v", target.URL.Host) } - addr := resolver.Address{Addr: target.Endpoint} + + // gRPC was parsing the dial target manually before PR #4817, and we + // switched to using url.Parse() in that PR. To avoid breaking existing + // resolver implementations we ended up stripping the leading "/" from the + // endpoint. This obviously does not work for the "unix" scheme. Hence we + // end up using the parsed URL instead. + endpoint := target.URL.Path + if endpoint == "" { + endpoint = target.URL.Opaque + } + addr := resolver.Address{Addr: endpoint} if b.scheme == unixAbstractScheme { - // prepend "\x00" to address for unix-abstract - addr.Addr = "\x00" + addr.Addr + // We can not prepend \0 as c++ gRPC does, as in Golang '@' is used to signify we do + // not want trailing \0 in address. + addr.Addr = "@" + addr.Addr } cc.UpdateState(resolver.State{Addresses: []resolver.Address{networktype.Set(addr, "unix")}}) return &nopResolver{}, nil diff --git a/vendor/google.golang.org/grpc/internal/serviceconfig/duration.go b/vendor/google.golang.org/grpc/internal/serviceconfig/duration.go new file mode 100644 index 00000000..11d82afc --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/serviceconfig/duration.go @@ -0,0 +1,130 @@ +/* + * + * Copyright 2023 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package serviceconfig + +import ( + "encoding/json" + "fmt" + "math" + "strconv" + "strings" + "time" +) + +// Duration defines JSON marshal and unmarshal methods to conform to the +// protobuf JSON spec defined [here]. +// +// [here]: https://protobuf.dev/reference/protobuf/google.protobuf/#duration +type Duration time.Duration + +func (d Duration) String() string { + return fmt.Sprint(time.Duration(d)) +} + +// MarshalJSON converts from d to a JSON string output. +func (d Duration) MarshalJSON() ([]byte, error) { + ns := time.Duration(d).Nanoseconds() + sec := ns / int64(time.Second) + ns = ns % int64(time.Second) + + var sign string + if sec < 0 || ns < 0 { + sign, sec, ns = "-", -1*sec, -1*ns + } + + // Generated output always contains 0, 3, 6, or 9 fractional digits, + // depending on required precision. + str := fmt.Sprintf("%s%d.%09d", sign, sec, ns) + str = strings.TrimSuffix(str, "000") + str = strings.TrimSuffix(str, "000") + str = strings.TrimSuffix(str, ".000") + return []byte(fmt.Sprintf("\"%ss\"", str)), nil +} + +// UnmarshalJSON unmarshals b as a duration JSON string into d. +func (d *Duration) UnmarshalJSON(b []byte) error { + var s string + if err := json.Unmarshal(b, &s); err != nil { + return err + } + if !strings.HasSuffix(s, "s") { + return fmt.Errorf("malformed duration %q: missing seconds unit", s) + } + neg := false + if s[0] == '-' { + neg = true + s = s[1:] + } + ss := strings.SplitN(s[:len(s)-1], ".", 3) + if len(ss) > 2 { + return fmt.Errorf("malformed duration %q: too many decimals", s) + } + // hasDigits is set if either the whole or fractional part of the number is + // present, since both are optional but one is required. + hasDigits := false + var sec, ns int64 + if len(ss[0]) > 0 { + var err error + if sec, err = strconv.ParseInt(ss[0], 10, 64); err != nil { + return fmt.Errorf("malformed duration %q: %v", s, err) + } + // Maximum seconds value per the durationpb spec. + const maxProtoSeconds = 315_576_000_000 + if sec > maxProtoSeconds { + return fmt.Errorf("out of range: %q", s) + } + hasDigits = true + } + if len(ss) == 2 && len(ss[1]) > 0 { + if len(ss[1]) > 9 { + return fmt.Errorf("malformed duration %q: too many digits after decimal", s) + } + var err error + if ns, err = strconv.ParseInt(ss[1], 10, 64); err != nil { + return fmt.Errorf("malformed duration %q: %v", s, err) + } + for i := 9; i > len(ss[1]); i-- { + ns *= 10 + } + hasDigits = true + } + if !hasDigits { + return fmt.Errorf("malformed duration %q: contains no numbers", s) + } + + if neg { + sec *= -1 + ns *= -1 + } + + // Maximum/minimum seconds/nanoseconds representable by Go's time.Duration. + const maxSeconds = math.MaxInt64 / int64(time.Second) + const maxNanosAtMaxSeconds = math.MaxInt64 % int64(time.Second) + const minSeconds = math.MinInt64 / int64(time.Second) + const minNanosAtMinSeconds = math.MinInt64 % int64(time.Second) + + if sec > maxSeconds || (sec == maxSeconds && ns >= maxNanosAtMaxSeconds) { + *d = Duration(math.MaxInt64) + } else if sec < minSeconds || (sec == minSeconds && ns <= minNanosAtMinSeconds) { + *d = Duration(math.MinInt64) + } else { + *d = Duration(sec*int64(time.Second) + ns) + } + return nil +} diff --git a/vendor/google.golang.org/grpc/internal/serviceconfig/serviceconfig.go b/vendor/google.golang.org/grpc/internal/serviceconfig/serviceconfig.go index c0634d15..51e733e4 100644 --- a/vendor/google.golang.org/grpc/internal/serviceconfig/serviceconfig.go +++ b/vendor/google.golang.org/grpc/internal/serviceconfig/serviceconfig.go @@ -67,10 +67,10 @@ func (bc *BalancerConfig) MarshalJSON() ([]byte, error) { // ServiceConfig contains a list of loadBalancingConfigs, each with a name and // config. This method iterates through that list in order, and stops at the // first policy that is supported. -// - If the config for the first supported policy is invalid, the whole service -// config is invalid. -// - If the list doesn't contain any supported policy, the whole service config -// is invalid. +// - If the config for the first supported policy is invalid, the whole service +// config is invalid. +// - If the list doesn't contain any supported policy, the whole service config +// is invalid. func (bc *BalancerConfig) UnmarshalJSON(b []byte) error { var ir intermediateBalancerConfig err := json.Unmarshal(b, &ir) @@ -78,6 +78,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error { return err } + var names []string for i, lbcfg := range ir { if len(lbcfg) != 1 { return fmt.Errorf("invalid loadBalancingConfig: entry %v does not contain exactly 1 policy/config pair: %q", i, lbcfg) @@ -92,6 +93,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error { for name, jsonCfg = range lbcfg { } + names = append(names, name) builder := balancer.Get(name) if builder == nil { // If the balancer is not registered, move on to the next config. @@ -120,7 +122,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error { // return. This means we had a loadBalancingConfig slice but did not // encounter a registered policy. The config is considered invalid in this // case. - return fmt.Errorf("invalid loadBalancingConfig: no supported policies found") + return fmt.Errorf("invalid loadBalancingConfig: no supported policies found in %v", names) } // MethodConfig defines the configuration recommended by the service providers for a diff --git a/vendor/google.golang.org/grpc/internal/status/status.go b/vendor/google.golang.org/grpc/internal/status/status.go index 710223b8..b0ead4f5 100644 --- a/vendor/google.golang.org/grpc/internal/status/status.go +++ b/vendor/google.golang.org/grpc/internal/status/status.go @@ -97,7 +97,7 @@ func (s *Status) Err() error { if s.Code() == codes.OK { return nil } - return &Error{e: s.Proto()} + return &Error{s: s} } // WithDetails returns a new status with the provided details messages appended to the status. @@ -136,19 +136,23 @@ func (s *Status) Details() []interface{} { return details } +func (s *Status) String() string { + return fmt.Sprintf("rpc error: code = %s desc = %s", s.Code(), s.Message()) +} + // Error wraps a pointer of a status proto. It implements error and Status, // and a nil *Error should never be returned by this package. type Error struct { - e *spb.Status + s *Status } func (e *Error) Error() string { - return fmt.Sprintf("rpc error: code = %s desc = %s", codes.Code(e.e.GetCode()), e.e.GetMessage()) + return e.s.String() } // GRPCStatus returns the Status represented by se. func (e *Error) GRPCStatus() *Status { - return FromProto(e.e) + return e.s } // Is implements future error.Is functionality. @@ -158,5 +162,15 @@ func (e *Error) Is(target error) bool { if !ok { return false } - return proto.Equal(e.e, tse.e) + return proto.Equal(e.s.s, tse.s.s) +} + +// IsRestrictedControlPlaneCode returns whether the status includes a code +// restricted for control plane usage as defined by gRFC A54. +func IsRestrictedControlPlaneCode(s *Status) bool { + switch s.Code() { + case codes.InvalidArgument, codes.NotFound, codes.AlreadyExists, codes.FailedPrecondition, codes.Aborted, codes.OutOfRange, codes.DataLoss: + return true + } + return false } diff --git a/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go b/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go index 4b2964f2..b3a72276 100644 --- a/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go +++ b/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go @@ -1,5 +1,3 @@ -// +build !appengine - /* * * Copyright 2018 gRPC authors. diff --git a/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go b/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go index 7913ef1d..999f52cd 100644 --- a/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go +++ b/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go @@ -1,4 +1,5 @@ -// +build !linux appengine +//go:build !linux +// +build !linux /* * @@ -35,41 +36,41 @@ var logger = grpclog.Component("core") func log() { once.Do(func() { - logger.Info("CPU time info is unavailable on non-linux or appengine environment.") + logger.Info("CPU time info is unavailable on non-linux environments.") }) } -// GetCPUTime returns the how much CPU time has passed since the start of this process. -// It always returns 0 under non-linux or appengine environment. +// GetCPUTime returns the how much CPU time has passed since the start of this +// process. It always returns 0 under non-linux environments. func GetCPUTime() int64 { log() return 0 } -// Rusage is an empty struct under non-linux or appengine environment. +// Rusage is an empty struct under non-linux environments. type Rusage struct{} -// GetRusage is a no-op function under non-linux or appengine environment. +// GetRusage is a no-op function under non-linux environments. func GetRusage() *Rusage { log() return nil } // CPUTimeDiff returns the differences of user CPU time and system CPU time used -// between two Rusage structs. It a no-op function for non-linux or appengine environment. +// between two Rusage structs. It a no-op function for non-linux environments. func CPUTimeDiff(first *Rusage, latest *Rusage) (float64, float64) { log() return 0, 0 } -// SetTCPUserTimeout is a no-op function under non-linux or appengine environments +// SetTCPUserTimeout is a no-op function under non-linux environments. func SetTCPUserTimeout(conn net.Conn, timeout time.Duration) error { log() return nil } -// GetTCPUserTimeout is a no-op function under non-linux or appengine environments -// a negative return value indicates the operation is not supported +// GetTCPUserTimeout is a no-op function under non-linux environments. +// A negative return value indicates the operation is not supported func GetTCPUserTimeout(conn net.Conn) (int, error) { log() return -1, nil diff --git a/vendor/google.golang.org/grpc/internal/transport/controlbuf.go b/vendor/google.golang.org/grpc/internal/transport/controlbuf.go index f63a0137..be5a9c81 100644 --- a/vendor/google.golang.org/grpc/internal/transport/controlbuf.go +++ b/vendor/google.golang.org/grpc/internal/transport/controlbuf.go @@ -22,6 +22,7 @@ import ( "bytes" "errors" "fmt" + "net" "runtime" "strconv" "sync" @@ -29,6 +30,7 @@ import ( "golang.org/x/net/http2" "golang.org/x/net/http2/hpack" + "google.golang.org/grpc/internal/grpclog" "google.golang.org/grpc/internal/grpcutil" "google.golang.org/grpc/status" ) @@ -133,9 +135,11 @@ type cleanupStream struct { func (c *cleanupStream) isTransportResponseFrame() bool { return c.rst } // Results in a RST_STREAM type earlyAbortStream struct { + httpStatus uint32 streamID uint32 contentSubtype string status *status.Status + rst bool } func (*earlyAbortStream) isTransportResponseFrame() bool { return false } @@ -189,7 +193,7 @@ type goAway struct { code http2.ErrCode debugData []byte headsUp bool - closeConn bool + closeConn error // if set, loopyWriter will exit, resulting in conn closure } func (*goAway) isTransportResponseFrame() bool { return false } @@ -207,6 +211,14 @@ type outFlowControlSizeRequest struct { func (*outFlowControlSizeRequest) isTransportResponseFrame() bool { return false } +// closeConnection is an instruction to tell the loopy writer to flush the +// framer and exit, which will cause the transport's connection to be closed +// (by the client or server). The transport itself will close after the reader +// encounters the EOF caused by the connection closure. +type closeConnection struct{} + +func (closeConnection) isTransportResponseFrame() bool { return false } + type outStreamState int const ( @@ -296,7 +308,7 @@ type controlBuffer struct { // closed and nilled when transportResponseFrames drops below the // threshold. Both fields are protected by mu. transportResponseFrames int - trfChan atomic.Value // *chan struct{} + trfChan atomic.Value // chan struct{} } func newControlBuffer(done <-chan struct{}) *controlBuffer { @@ -310,10 +322,10 @@ func newControlBuffer(done <-chan struct{}) *controlBuffer { // throttle blocks if there are too many incomingSettings/cleanupStreams in the // controlbuf. func (c *controlBuffer) throttle() { - ch, _ := c.trfChan.Load().(*chan struct{}) + ch, _ := c.trfChan.Load().(chan struct{}) if ch != nil { select { - case <-*ch: + case <-ch: case <-c.done: } } @@ -347,8 +359,7 @@ func (c *controlBuffer) executeAndPut(f func(it interface{}) bool, it cbItem) (b if c.transportResponseFrames == maxQueuedTransportResponseFrames { // We are adding the frame that puts us over the threshold; create // a throttling channel. - ch := make(chan struct{}) - c.trfChan.Store(&ch) + c.trfChan.Store(make(chan struct{})) } } c.mu.Unlock() @@ -389,9 +400,9 @@ func (c *controlBuffer) get(block bool) (interface{}, error) { if c.transportResponseFrames == maxQueuedTransportResponseFrames { // We are removing the frame that put us over the // threshold; close and clear the throttling channel. - ch := c.trfChan.Load().(*chan struct{}) - close(*ch) - c.trfChan.Store((*chan struct{})(nil)) + ch := c.trfChan.Load().(chan struct{}) + close(ch) + c.trfChan.Store((chan struct{})(nil)) } c.transportResponseFrames-- } @@ -407,8 +418,7 @@ func (c *controlBuffer) get(block bool) (interface{}, error) { select { case <-c.ch: case <-c.done: - c.finish() - return nil, ErrConnClosing + return nil, errors.New("transport closed by client") } } } @@ -432,6 +442,14 @@ func (c *controlBuffer) finish() { hdr.onOrphaned(ErrConnClosing) } } + // In case throttle() is currently in flight, it needs to be unblocked. + // Otherwise, the transport may not close, since the transport is closed by + // the reader encountering the connection error. + ch, _ := c.trfChan.Load().(chan struct{}) + if ch != nil { + close(ch) + } + c.trfChan.Store((chan struct{})(nil)) c.mu.Unlock() } @@ -470,12 +488,14 @@ type loopyWriter struct { hEnc *hpack.Encoder // HPACK encoder. bdpEst *bdpEstimator draining bool + conn net.Conn + logger *grpclog.PrefixLogger // Side-specific handlers ssGoAwayHandler func(*goAway) (bool, error) } -func newLoopyWriter(s side, fr *framer, cbuf *controlBuffer, bdpEst *bdpEstimator) *loopyWriter { +func newLoopyWriter(s side, fr *framer, cbuf *controlBuffer, bdpEst *bdpEstimator, conn net.Conn, logger *grpclog.PrefixLogger) *loopyWriter { var buf bytes.Buffer l := &loopyWriter{ side: s, @@ -488,6 +508,8 @@ func newLoopyWriter(s side, fr *framer, cbuf *controlBuffer, bdpEst *bdpEstimato hBuf: &buf, hEnc: hpack.NewEncoder(&buf), bdpEst: bdpEst, + conn: conn, + logger: logger, } return l } @@ -505,23 +527,26 @@ const minBatchSize = 1000 // 2. Stream level flow control quota available. // // In each iteration of run loop, other than processing the incoming control -// frame, loopy calls processData, which processes one node from the activeStreams linked-list. -// This results in writing of HTTP2 frames into an underlying write buffer. -// When there's no more control frames to read from controlBuf, loopy flushes the write buffer. -// As an optimization, to increase the batch size for each flush, loopy yields the processor, once -// if the batch size is too low to give stream goroutines a chance to fill it up. +// frame, loopy calls processData, which processes one node from the +// activeStreams linked-list. This results in writing of HTTP2 frames into an +// underlying write buffer. When there's no more control frames to read from +// controlBuf, loopy flushes the write buffer. As an optimization, to increase +// the batch size for each flush, loopy yields the processor, once if the batch +// size is too low to give stream goroutines a chance to fill it up. +// +// Upon exiting, if the error causing the exit is not an I/O error, run() +// flushes and closes the underlying connection. Otherwise, the connection is +// left open to allow the I/O error to be encountered by the reader instead. func (l *loopyWriter) run() (err error) { defer func() { - if err == ErrConnClosing { - // Don't log ErrConnClosing as error since it happens - // 1. When the connection is closed by some other known issue. - // 2. User closed the connection. - // 3. A graceful close of connection. - if logger.V(logLevel) { - logger.Infof("transport: loopyWriter.run returning. %v", err) - } - err = nil + if l.logger.V(logLevel) { + l.logger.Infof("loopyWriter exiting with error: %v", err) + } + if !isIOError(err) { + l.framer.writer.Flush() + l.conn.Close() } + l.cbuf.finish() }() for { it, err := l.cbuf.get(true) @@ -566,7 +591,6 @@ func (l *loopyWriter) run() (err error) { } l.framer.writer.Flush() break hasdata - } } } @@ -575,11 +599,11 @@ func (l *loopyWriter) outgoingWindowUpdateHandler(w *outgoingWindowUpdate) error return l.framer.fr.WriteWindowUpdate(w.streamID, w.increment) } -func (l *loopyWriter) incomingWindowUpdateHandler(w *incomingWindowUpdate) error { +func (l *loopyWriter) incomingWindowUpdateHandler(w *incomingWindowUpdate) { // Otherwise update the quota. if w.streamID == 0 { l.sendQuota += w.increment - return nil + return } // Find the stream and update it. if str, ok := l.estdStreams[w.streamID]; ok { @@ -587,10 +611,9 @@ func (l *loopyWriter) incomingWindowUpdateHandler(w *incomingWindowUpdate) error if strQuota := int(l.oiws) - str.bytesOutStanding; strQuota > 0 && str.state == waitingOnStreamQuota { str.state = active l.activeStreams.enqueue(str) - return nil + return } } - return nil } func (l *loopyWriter) outgoingSettingsHandler(s *outgoingSettings) error { @@ -598,13 +621,11 @@ func (l *loopyWriter) outgoingSettingsHandler(s *outgoingSettings) error { } func (l *loopyWriter) incomingSettingsHandler(s *incomingSettings) error { - if err := l.applySettings(s.ss); err != nil { - return err - } + l.applySettings(s.ss) return l.framer.fr.WriteSettingsAck() } -func (l *loopyWriter) registerStreamHandler(h *registerStream) error { +func (l *loopyWriter) registerStreamHandler(h *registerStream) { str := &outStream{ id: h.streamID, state: empty, @@ -612,15 +633,14 @@ func (l *loopyWriter) registerStreamHandler(h *registerStream) error { wq: h.wq, } l.estdStreams[h.streamID] = str - return nil } func (l *loopyWriter) headerHandler(h *headerFrame) error { if l.side == serverSide { str, ok := l.estdStreams[h.streamID] if !ok { - if logger.V(logLevel) { - logger.Warningf("transport: loopy doesn't recognize the stream: %d", h.streamID) + if l.logger.V(logLevel) { + l.logger.Infof("Unrecognized streamID %d in loopyWriter", h.streamID) } return nil } @@ -647,19 +667,20 @@ func (l *loopyWriter) headerHandler(h *headerFrame) error { itl: &itemList{}, wq: h.wq, } - str.itl.enqueue(h) - return l.originateStream(str) + return l.originateStream(str, h) } -func (l *loopyWriter) originateStream(str *outStream) error { - hdr := str.itl.dequeue().(*headerFrame) - if err := hdr.initStream(str.id); err != nil { - if err == ErrConnClosing { - return err - } - // Other errors(errStreamDrain) need not close transport. +func (l *loopyWriter) originateStream(str *outStream, hdr *headerFrame) error { + // l.draining is set when handling GoAway. In which case, we want to avoid + // creating new streams. + if l.draining { + // TODO: provide a better error with the reason we are in draining. + hdr.onOrphaned(errStreamDrain) return nil } + if err := hdr.initStream(str.id); err != nil { + return err + } if err := l.writeHeader(str.id, hdr.endStream, hdr.hf, hdr.onWrite); err != nil { return err } @@ -674,8 +695,8 @@ func (l *loopyWriter) writeHeader(streamID uint32, endStream bool, hf []hpack.He l.hBuf.Reset() for _, f := range hf { if err := l.hEnc.WriteField(f); err != nil { - if logger.V(logLevel) { - logger.Warningf("transport: loopyWriter.writeHeader encountered error while encoding headers: %v", err) + if l.logger.V(logLevel) { + l.logger.Warningf("Encountered error while encoding headers: %v", err) } } } @@ -713,10 +734,10 @@ func (l *loopyWriter) writeHeader(streamID uint32, endStream bool, hf []hpack.He return nil } -func (l *loopyWriter) preprocessData(df *dataFrame) error { +func (l *loopyWriter) preprocessData(df *dataFrame) { str, ok := l.estdStreams[df.streamID] if !ok { - return nil + return } // If we got data for a stream it means that // stream was originated and the headers were sent out. @@ -725,7 +746,6 @@ func (l *loopyWriter) preprocessData(df *dataFrame) error { str.state = active l.activeStreams.enqueue(str) } - return nil } func (l *loopyWriter) pingHandler(p *ping) error { @@ -736,9 +756,8 @@ func (l *loopyWriter) pingHandler(p *ping) error { } -func (l *loopyWriter) outFlowControlSizeRequestHandler(o *outFlowControlSizeRequest) error { +func (l *loopyWriter) outFlowControlSizeRequestHandler(o *outFlowControlSizeRequest) { o.resp <- l.sendQuota - return nil } func (l *loopyWriter) cleanupStreamHandler(c *cleanupStream) error { @@ -755,8 +774,9 @@ func (l *loopyWriter) cleanupStreamHandler(c *cleanupStream) error { return err } } - if l.side == clientSide && l.draining && len(l.estdStreams) == 0 { - return ErrConnClosing + if l.draining && len(l.estdStreams) == 0 { + // Flush and close the connection; we are done with it. + return errors.New("finished processing active streams while in draining mode") } return nil } @@ -765,9 +785,12 @@ func (l *loopyWriter) earlyAbortStreamHandler(eas *earlyAbortStream) error { if l.side == clientSide { return errors.New("earlyAbortStream not handled on client") } - + // In case the caller forgets to set the http status, default to 200. + if eas.httpStatus == 0 { + eas.httpStatus = 200 + } headerFields := []hpack.HeaderField{ - {Name: ":status", Value: "200"}, + {Name: ":status", Value: strconv.Itoa(int(eas.httpStatus))}, {Name: "content-type", Value: grpcutil.ContentType(eas.contentSubtype)}, {Name: "grpc-status", Value: strconv.Itoa(int(eas.status.Code()))}, {Name: "grpc-message", Value: encodeGrpcMessage(eas.status.Message())}, @@ -776,6 +799,11 @@ func (l *loopyWriter) earlyAbortStreamHandler(eas *earlyAbortStream) error { if err := l.writeHeader(eas.streamID, true, headerFields, nil); err != nil { return err } + if eas.rst { + if err := l.framer.fr.WriteRSTStream(eas.streamID, http2.ErrCodeNo); err != nil { + return err + } + } return nil } @@ -783,7 +811,8 @@ func (l *loopyWriter) incomingGoAwayHandler(*incomingGoAway) error { if l.side == clientSide { l.draining = true if len(l.estdStreams) == 0 { - return ErrConnClosing + // Flush and close the connection; we are done with it. + return errors.New("received GOAWAY with no active streams") } } return nil @@ -804,7 +833,7 @@ func (l *loopyWriter) goAwayHandler(g *goAway) error { func (l *loopyWriter) handle(i interface{}) error { switch i := i.(type) { case *incomingWindowUpdate: - return l.incomingWindowUpdateHandler(i) + l.incomingWindowUpdateHandler(i) case *outgoingWindowUpdate: return l.outgoingWindowUpdateHandler(i) case *incomingSettings: @@ -814,7 +843,7 @@ func (l *loopyWriter) handle(i interface{}) error { case *headerFrame: return l.headerHandler(i) case *registerStream: - return l.registerStreamHandler(i) + l.registerStreamHandler(i) case *cleanupStream: return l.cleanupStreamHandler(i) case *earlyAbortStream: @@ -822,19 +851,24 @@ func (l *loopyWriter) handle(i interface{}) error { case *incomingGoAway: return l.incomingGoAwayHandler(i) case *dataFrame: - return l.preprocessData(i) + l.preprocessData(i) case *ping: return l.pingHandler(i) case *goAway: return l.goAwayHandler(i) case *outFlowControlSizeRequest: - return l.outFlowControlSizeRequestHandler(i) + l.outFlowControlSizeRequestHandler(i) + case closeConnection: + // Just return a non-I/O error and run() will flush and close the + // connection. + return ErrConnClosing default: return fmt.Errorf("transport: unknown control message type %T", i) } + return nil } -func (l *loopyWriter) applySettings(ss []http2.Setting) error { +func (l *loopyWriter) applySettings(ss []http2.Setting) { for _, s := range ss { switch s.ID { case http2.SettingInitialWindowSize: @@ -853,7 +887,6 @@ func (l *loopyWriter) applySettings(ss []http2.Setting) error { updateHeaderTblSize(l.hEnc, s.Val) } } - return nil } // processData removes the first stream from active streams, writes out at most 16KB @@ -870,9 +903,9 @@ func (l *loopyWriter) processData() (bool, error) { dataItem := str.itl.peek().(*dataFrame) // Peek at the first data item this stream. // A data item is represented by a dataFrame, since it later translates into // multiple HTTP2 data frames. - // Every dataFrame has two buffers; h that keeps grpc-message header and d that is acutal data. + // Every dataFrame has two buffers; h that keeps grpc-message header and d that is actual data. // As an optimization to keep wire traffic low, data from d is copied to h to make as big as the - // maximum possilbe HTTP2 frame size. + // maximum possible HTTP2 frame size. if len(dataItem.h) == 0 && len(dataItem.d) == 0 { // Empty data frame // Client sends out empty data frame with endStream = true @@ -887,7 +920,7 @@ func (l *loopyWriter) processData() (bool, error) { return false, err } if err := l.cleanupStreamHandler(trailer.cleanup); err != nil { - return false, nil + return false, err } } else { l.activeStreams.enqueue(str) diff --git a/vendor/google.golang.org/grpc/internal/transport/defaults.go b/vendor/google.golang.org/grpc/internal/transport/defaults.go index 9fa306b2..bc8ee074 100644 --- a/vendor/google.golang.org/grpc/internal/transport/defaults.go +++ b/vendor/google.golang.org/grpc/internal/transport/defaults.go @@ -47,3 +47,9 @@ const ( defaultClientMaxHeaderListSize = uint32(16 << 20) defaultServerMaxHeaderListSize = uint32(16 << 20) ) + +// MaxStreamID is the upper bound for the stream ID before the current +// transport gracefully closes and new transport is created for subsequent RPCs. +// This is set to 75% of 2^31-1. Streams are identified with an unsigned 31-bit +// integer. It's exported so that tests can override it. +var MaxStreamID = uint32(math.MaxInt32 * 3 / 4) diff --git a/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go b/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go index f262edd8..97198c51 100644 --- a/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go +++ b/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go @@ -136,12 +136,10 @@ type inFlow struct { // newLimit updates the inflow window to a new value n. // It assumes that n is always greater than the old limit. -func (f *inFlow) newLimit(n uint32) uint32 { +func (f *inFlow) newLimit(n uint32) { f.mu.Lock() - d := n - f.limit f.limit = n f.mu.Unlock() - return d } func (f *inFlow) maybeAdjust(n uint32) uint32 { diff --git a/vendor/google.golang.org/grpc/internal/transport/handler_server.go b/vendor/google.golang.org/grpc/internal/transport/handler_server.go index 05d3871e..98f80e3f 100644 --- a/vendor/google.golang.org/grpc/internal/transport/handler_server.go +++ b/vendor/google.golang.org/grpc/internal/transport/handler_server.go @@ -39,6 +39,7 @@ import ( "golang.org/x/net/http2" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" + "google.golang.org/grpc/internal/grpclog" "google.golang.org/grpc/internal/grpcutil" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" @@ -46,24 +47,32 @@ import ( "google.golang.org/grpc/status" ) -// NewServerHandlerTransport returns a ServerTransport handling gRPC -// from inside an http.Handler. It requires that the http Server -// supports HTTP/2. -func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats stats.Handler) (ServerTransport, error) { +// NewServerHandlerTransport returns a ServerTransport handling gRPC from +// inside an http.Handler, or writes an HTTP error to w and returns an error. +// It requires that the http Server supports HTTP/2. +func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats []stats.Handler) (ServerTransport, error) { if r.ProtoMajor != 2 { - return nil, errors.New("gRPC requires HTTP/2") + msg := "gRPC requires HTTP/2" + http.Error(w, msg, http.StatusBadRequest) + return nil, errors.New(msg) } if r.Method != "POST" { - return nil, errors.New("invalid gRPC request method") + msg := fmt.Sprintf("invalid gRPC request method %q", r.Method) + http.Error(w, msg, http.StatusBadRequest) + return nil, errors.New(msg) } contentType := r.Header.Get("Content-Type") // TODO: do we assume contentType is lowercase? we did before contentSubtype, validContentType := grpcutil.ContentSubtype(contentType) if !validContentType { - return nil, errors.New("invalid gRPC request content-type") + msg := fmt.Sprintf("invalid gRPC request content-type %q", contentType) + http.Error(w, msg, http.StatusUnsupportedMediaType) + return nil, errors.New(msg) } if _, ok := w.(http.Flusher); !ok { - return nil, errors.New("gRPC requires a ResponseWriter supporting http.Flusher") + msg := "gRPC requires a ResponseWriter supporting http.Flusher" + http.Error(w, msg, http.StatusInternalServerError) + return nil, errors.New(msg) } st := &serverHandlerTransport{ @@ -75,11 +84,14 @@ func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats sta contentSubtype: contentSubtype, stats: stats, } + st.logger = prefixLoggerForServerHandlerTransport(st) if v := r.Header.Get("grpc-timeout"); v != "" { to, err := decodeTimeout(v) if err != nil { - return nil, status.Errorf(codes.Internal, "malformed time-out: %v", err) + msg := fmt.Sprintf("malformed grpc-timeout: %v", err) + http.Error(w, msg, http.StatusBadRequest) + return nil, status.Error(codes.Internal, msg) } st.timeoutSet = true st.timeout = to @@ -97,7 +109,9 @@ func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats sta for _, v := range vv { v, err := decodeMetadataHeader(k, v) if err != nil { - return nil, status.Errorf(codes.Internal, "malformed binary metadata: %v", err) + msg := fmt.Sprintf("malformed binary metadata %q in header %q: %v", v, k, err) + http.Error(w, msg, http.StatusBadRequest) + return nil, status.Error(codes.Internal, msg) } metakv = append(metakv, k, v) } @@ -138,16 +152,19 @@ type serverHandlerTransport struct { // TODO make sure this is consistent across handler_server and http2_server contentSubtype string - stats stats.Handler + stats []stats.Handler + logger *grpclog.PrefixLogger } -func (ht *serverHandlerTransport) Close() error { - ht.closeOnce.Do(ht.closeCloseChanOnce) - return nil +func (ht *serverHandlerTransport) Close(err error) { + ht.closeOnce.Do(func() { + if ht.logger.V(logLevel) { + ht.logger.Infof("Closing: %v", err) + } + close(ht.closedCh) + }) } -func (ht *serverHandlerTransport) closeCloseChanOnce() { close(ht.closedCh) } - func (ht *serverHandlerTransport) RemoteAddr() net.Addr { return strAddr(ht.req.RemoteAddr) } // strAddr is a net.Addr backed by either a TCP "ip:port" string, or @@ -229,15 +246,15 @@ func (ht *serverHandlerTransport) WriteStatus(s *Stream, st *status.Status) erro }) if err == nil { // transport has not been closed - if ht.stats != nil { - // Note: The trailer fields are compressed with hpack after this call returns. - // No WireLength field is set here. - ht.stats.HandleRPC(s.Context(), &stats.OutTrailer{ + // Note: The trailer fields are compressed with hpack after this call returns. + // No WireLength field is set here. + for _, sh := range ht.stats { + sh.HandleRPC(s.Context(), &stats.OutTrailer{ Trailer: s.trailer.Copy(), }) } } - ht.Close() + ht.Close(errors.New("finished writing status")) return err } @@ -315,10 +332,10 @@ func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error { }) if err == nil { - if ht.stats != nil { + for _, sh := range ht.stats { // Note: The header fields are compressed with hpack after this call returns. // No WireLength field is set here. - ht.stats.HandleRPC(s.Context(), &stats.OutHeader{ + sh.HandleRPC(s.Context(), &stats.OutHeader{ Header: md.Copy(), Compression: s.sendCompress, }) @@ -347,7 +364,7 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace case <-ht.req.Context().Done(): } cancel() - ht.Close() + ht.Close(errors.New("request is done processing")) }() req := ht.req @@ -370,14 +387,14 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace } ctx = metadata.NewIncomingContext(ctx, ht.headerMD) s.ctx = peer.NewContext(ctx, pr) - if ht.stats != nil { - s.ctx = ht.stats.TagRPC(s.ctx, &stats.RPCTagInfo{FullMethodName: s.method}) + for _, sh := range ht.stats { + s.ctx = sh.TagRPC(s.ctx, &stats.RPCTagInfo{FullMethodName: s.method}) inHeader := &stats.InHeader{ FullMethod: s.method, RemoteAddr: ht.RemoteAddr(), Compression: s.recvCompress, } - ht.stats.HandleRPC(s.ctx, inHeader) + sh.HandleRPC(s.ctx, inHeader) } s.trReader = &transportReader{ reader: &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf, freeBuffer: func(*bytes.Buffer) {}}, @@ -436,17 +453,17 @@ func (ht *serverHandlerTransport) IncrMsgSent() {} func (ht *serverHandlerTransport) IncrMsgRecv() {} -func (ht *serverHandlerTransport) Drain() { +func (ht *serverHandlerTransport) Drain(debugData string) { panic("Drain() is not implemented") } // mapRecvMsgError returns the non-nil err into the appropriate // error value as expected by callers of *grpc.parser.recvMsg. // In particular, in can only be: -// * io.EOF -// * io.ErrUnexpectedEOF -// * of type transport.ConnectionError -// * an error from the status package +// - io.EOF +// - io.ErrUnexpectedEOF +// - of type transport.ConnectionError +// - an error from the status package func mapRecvMsgError(err error) error { if err == io.EOF || err == io.ErrUnexpectedEOF { return err diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_client.go b/vendor/google.golang.org/grpc/internal/transport/http2_client.go index 48c5e52e..326bf084 100644 --- a/vendor/google.golang.org/grpc/internal/transport/http2_client.go +++ b/vendor/google.golang.org/grpc/internal/transport/http2_client.go @@ -24,6 +24,8 @@ import ( "io" "math" "net" + "net/http" + "path/filepath" "strconv" "strings" "sync" @@ -36,8 +38,11 @@ import ( "google.golang.org/grpc/credentials" "google.golang.org/grpc/internal/channelz" icredentials "google.golang.org/grpc/internal/credentials" + "google.golang.org/grpc/internal/grpclog" + "google.golang.org/grpc/internal/grpcsync" "google.golang.org/grpc/internal/grpcutil" imetadata "google.golang.org/grpc/internal/metadata" + istatus "google.golang.org/grpc/internal/status" "google.golang.org/grpc/internal/syscall" "google.golang.org/grpc/internal/transport/networktype" "google.golang.org/grpc/keepalive" @@ -55,11 +60,15 @@ var clientConnectionCounter uint64 // http2Client implements the ClientTransport interface with HTTP2. type http2Client struct { - lastRead int64 // Keep this field 64-bit aligned. Accessed atomically. - ctx context.Context - cancel context.CancelFunc - ctxDone <-chan struct{} // Cache the ctx.Done() chan. - userAgent string + lastRead int64 // Keep this field 64-bit aligned. Accessed atomically. + ctx context.Context + cancel context.CancelFunc + ctxDone <-chan struct{} // Cache the ctx.Done() chan. + userAgent string + // address contains the resolver returned address for this transport. + // If the `ServerName` field is set, it takes precedence over `CallHdr.Host` + // passed to `NewStream`, when determining the :authority header. + address resolver.Address md metadata.MD conn net.Conn // underlying communication channel loopy *loopyWriter @@ -76,6 +85,7 @@ type http2Client struct { framer *framer // controlBuf delivers all the control related tasks (e.g., window // updates, reset streams, and various settings) to the controller. + // Do not access controlBuf with mu held. controlBuf *controlBuffer fc *trInFlow // The scheme used: https if TLS is on, http otherwise. @@ -88,7 +98,7 @@ type http2Client struct { kp keepalive.ClientParameters keepaliveEnabled bool - statsHandler stats.Handler + statsHandlers []stats.Handler initialWindowSize int32 @@ -96,17 +106,15 @@ type http2Client struct { maxSendHeaderListSize *uint32 bdpEst *bdpEstimator - // onPrefaceReceipt is a callback that client transport calls upon - // receiving server preface to signal that a succefull HTTP2 - // connection was established. - onPrefaceReceipt func() maxConcurrentStreams uint32 streamQuota int64 streamsQuotaAvailable chan struct{} waitingStreams uint32 nextID uint32 + registeredCompressors string + // Do not access controlBuf with mu held. mu sync.Mutex // guard the following variables state transportState activeStreams map[uint32]*Stream @@ -130,28 +138,35 @@ type http2Client struct { kpDormant bool // Fields below are for channelz metric collection. - channelzID int64 // channelz unique identification number + channelzID *channelz.Identifier czData *channelzData - onGoAway func(GoAwayReason) - onClose func() + onClose func(GoAwayReason) bufferPool *bufferPool connectionID uint64 + logger *grpclog.PrefixLogger } func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr resolver.Address, useProxy bool, grpcUA string) (net.Conn, error) { address := addr.Addr networkType, ok := networktype.Get(addr) if fn != nil { + // Special handling for unix scheme with custom dialer. Back in the day, + // we did not have a unix resolver and therefore targets with a unix + // scheme would end up using the passthrough resolver. So, user's used a + // custom dialer in this case and expected the original dial target to + // be passed to the custom dialer. Now, we have a unix resolver. But if + // a custom dialer is specified, we want to retain the old behavior in + // terms of the address being passed to the custom dialer. if networkType == "unix" && !strings.HasPrefix(address, "\x00") { - // For backward compatibility, if the user dialed "unix:///path", - // the passthrough resolver would be used and the user's custom - // dialer would see "unix:///path". Since the unix resolver is used - // and the address is now "/path", prepend "unix://" so the user's - // custom dialer sees the same address. - return fn(ctx, "unix://"+address) + // Supported unix targets are either "unix://absolute-path" or + // "unix:relative-path". + if filepath.IsAbs(address) { + return fn(ctx, "unix://"+address) + } + return fn(ctx, "unix:"+address) } return fn(ctx, address) } @@ -183,7 +198,7 @@ func isTemporary(err error) bool { // newHTTP2Client constructs a connected ClientTransport to addr based on HTTP2 // and starts to receive messages on it. Non-nil error returns if construction // fails. -func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts ConnectOptions, onPrefaceReceipt func(), onGoAway func(GoAwayReason), onClose func()) (_ *http2Client, err error) { +func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts ConnectOptions, onClose func(GoAwayReason)) (_ *http2Client, err error) { scheme := "http" ctx, cancel := context.WithCancel(ctx) defer func() { @@ -192,19 +207,51 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts } }() + // gRPC, resolver, balancer etc. can specify arbitrary data in the + // Attributes field of resolver.Address, which is shoved into connectCtx + // and passed to the dialer and credential handshaker. This makes it possible for + // address specific arbitrary data to reach custom dialers and credential handshakers. + connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes}) + conn, err := dial(connectCtx, opts.Dialer, addr, opts.UseProxy, opts.UserAgent) if err != nil { if opts.FailOnNonTempDialError { return nil, connectionErrorf(isTemporary(err), err, "transport: error while dialing: %v", err) } - return nil, connectionErrorf(true, err, "transport: Error while dialing %v", err) + return nil, connectionErrorf(true, err, "transport: Error while dialing: %v", err) } + // Any further errors will close the underlying connection defer func(conn net.Conn) { if err != nil { conn.Close() } }(conn) + + // The following defer and goroutine monitor the connectCtx for cancelation + // and deadline. On context expiration, the connection is hard closed and + // this function will naturally fail as a result. Otherwise, the defer + // waits for the goroutine to exit to prevent the context from being + // monitored (and to prevent the connection from ever being closed) after + // returning from this function. + ctxMonitorDone := grpcsync.NewEvent() + newClientCtx, newClientDone := context.WithCancel(connectCtx) + defer func() { + newClientDone() // Awaken the goroutine below if connectCtx hasn't expired. + <-ctxMonitorDone.Done() // Wait for the goroutine below to exit. + }() + go func(conn net.Conn) { + defer ctxMonitorDone.Fire() // Signal this goroutine has exited. + <-newClientCtx.Done() // Block until connectCtx expires or the defer above executes. + if err := connectCtx.Err(); err != nil { + // connectCtx expired before exiting the function. Hard close the connection. + if logger.V(logLevel) { + logger.Infof("Aborting due to connect deadline expiring: %v", err) + } + conn.Close() + } + }(conn) + kp := opts.KeepaliveParams // Validate keepalive parameters. if kp.Time == 0 { @@ -236,11 +283,6 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts } } if transportCreds != nil { - // gRPC, resolver, balancer etc. can specify arbitrary data in the - // Attributes field of resolver.Address, which is shoved into connectCtx - // and passed to the credential handshaker. This makes it possible for - // address specific arbitrary data to reach the credential handshaker. - connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes}) conn, authInfo, err = transportCreds.ClientHandshake(connectCtx, addr.ServerName, conn) if err != nil { return nil, connectionErrorf(isTemporary(err), err, "transport: authentication handshake failed: %v", err) @@ -279,6 +321,8 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts ctxDone: ctx.Done(), // Cache Done chan. cancel: cancel, userAgent: opts.UserAgent, + registeredCompressors: grpcutil.RegisteredCompressors(), + address: addr, conn: conn, remoteAddr: conn.RemoteAddr(), localAddr: conn.LocalAddr(), @@ -293,19 +337,20 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts isSecure: isSecure, perRPCCreds: perRPCCreds, kp: kp, - statsHandler: opts.StatsHandler, + statsHandlers: opts.StatsHandlers, initialWindowSize: initialWindowSize, - onPrefaceReceipt: onPrefaceReceipt, nextID: 1, maxConcurrentStreams: defaultMaxStreamsClient, streamQuota: defaultMaxStreamsClient, streamsQuotaAvailable: make(chan struct{}, 1), czData: new(channelzData), - onGoAway: onGoAway, - onClose: onClose, keepaliveEnabled: keepaliveEnabled, bufferPool: newBufferPool(), + onClose: onClose, } + t.logger = prefixLoggerForClientTransport(t) + // Add peer information to the http2client context. + t.ctx = peer.NewContext(t.ctx, t.getPeer()) if md, ok := addr.Metadata.(*metadata.MD); ok { t.md = *md @@ -323,38 +368,50 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts updateFlowControl: t.updateFlowControl, } } - if t.statsHandler != nil { - t.ctx = t.statsHandler.TagConn(t.ctx, &stats.ConnTagInfo{ + for _, sh := range t.statsHandlers { + t.ctx = sh.TagConn(t.ctx, &stats.ConnTagInfo{ RemoteAddr: t.remoteAddr, LocalAddr: t.localAddr, }) connBegin := &stats.ConnBegin{ Client: true, } - t.statsHandler.HandleConn(t.ctx, connBegin) + sh.HandleConn(t.ctx, connBegin) } - if channelz.IsOn() { - t.channelzID = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, fmt.Sprintf("%s -> %s", t.localAddr, t.remoteAddr)) + t.channelzID, err = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, fmt.Sprintf("%s -> %s", t.localAddr, t.remoteAddr)) + if err != nil { + return nil, err } if t.keepaliveEnabled { t.kpDormancyCond = sync.NewCond(&t.mu) go t.keepalive() } - // Start the reader goroutine for incoming message. Each transport has - // a dedicated goroutine which reads HTTP2 frame from network. Then it - // dispatches the frame to the corresponding stream entity. - go t.reader() + + // Start the reader goroutine for incoming messages. Each transport has a + // dedicated goroutine which reads HTTP2 frames from the network. Then it + // dispatches the frame to the corresponding stream entity. When the + // server preface is received, readerErrCh is closed. If an error occurs + // first, an error is pushed to the channel. This must be checked before + // returning from this function. + readerErrCh := make(chan error, 1) + go t.reader(readerErrCh) + defer func() { + if err == nil { + err = <-readerErrCh + } + if err != nil { + t.Close(err) + } + }() // Send connection preface to server. n, err := t.conn.Write(clientPreface) if err != nil { err = connectionErrorf(true, err, "transport: failed to write client preface: %v", err) - t.Close(err) return nil, err } if n != len(clientPreface) { err = connectionErrorf(true, nil, "transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface)) - t.Close(err) return nil, err } var ss []http2.Setting @@ -374,14 +431,12 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts err = t.framer.fr.WriteSettings(ss...) if err != nil { err = connectionErrorf(true, err, "transport: failed to write initial settings frame: %v", err) - t.Close(err) return nil, err } // Adjust the connection flow control window if needed. if delta := uint32(icwz - defaultWindowSize); delta > 0 { if err := t.framer.fr.WriteWindowUpdate(0, delta); err != nil { err = connectionErrorf(true, err, "transport: failed to write window update: %v", err) - t.Close(err) return nil, err } } @@ -392,18 +447,8 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts return nil, err } go func() { - t.loopy = newLoopyWriter(clientSide, t.framer, t.controlBuf, t.bdpEst) - err := t.loopy.run() - if err != nil { - if logger.V(logLevel) { - logger.Errorf("transport: loopyWriter.run returning. Err: %v", err) - } - } - // If it's a connection error, let reader goroutine handle it - // since there might be data in the buffers. - if _, ok := err.(net.Error); !ok { - t.conn.Close() - } + t.loopy = newLoopyWriter(clientSide, t.framer, t.controlBuf, t.bdpEst, t.conn, t.logger) + t.loopy.run() close(t.writerDone) }() return t, nil @@ -449,7 +494,7 @@ func (t *http2Client) newStream(ctx context.Context, callHdr *CallHdr) *Stream { func (t *http2Client) getPeer() *peer.Peer { return &peer.Peer{ Addr: t.remoteAddr, - AuthInfo: t.authInfo, + AuthInfo: t.authInfo, // Can be nil } } @@ -485,9 +530,22 @@ func (t *http2Client) createHeaderFields(ctx context.Context, callHdr *CallHdr) headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-previous-rpc-attempts", Value: strconv.Itoa(callHdr.PreviousAttempts)}) } + registeredCompressors := t.registeredCompressors if callHdr.SendCompress != "" { headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-encoding", Value: callHdr.SendCompress}) - headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-accept-encoding", Value: callHdr.SendCompress}) + // Include the outgoing compressor name when compressor is not registered + // via encoding.RegisterCompressor. This is possible when client uses + // WithCompressor dial option. + if !grpcutil.IsCompressorNameRegistered(callHdr.SendCompress) { + if registeredCompressors != "" { + registeredCompressors += "," + } + registeredCompressors += callHdr.SendCompress + } + } + + if registeredCompressors != "" { + headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-accept-encoding", Value: registeredCompressors}) } if dl, ok := ctx.Deadline(); ok { // Send out timeout regardless its value. The server can detect timeout context by itself. @@ -567,11 +625,15 @@ func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[s for _, c := range t.perRPCCreds { data, err := c.GetRequestMetadata(ctx, audience) if err != nil { - if _, ok := status.FromError(err); ok { + if st, ok := status.FromError(err); ok { + // Restrict the code to the list allowed by gRFC A54. + if istatus.IsRestrictedControlPlaneCode(st) { + err = status.Errorf(codes.Internal, "transport: received per-RPC creds error with illegal status: %v", err) + } return nil, err } - return nil, status.Errorf(codes.Unauthenticated, "transport: %v", err) + return nil, status.Errorf(codes.Unauthenticated, "transport: per-RPC creds failed due to error: %v", err) } for k, v := range data { // Capital header names are illegal in HTTP/2. @@ -596,7 +658,14 @@ func (t *http2Client) getCallAuthData(ctx context.Context, audience string, call } data, err := callCreds.GetRequestMetadata(ctx, audience) if err != nil { - return nil, status.Errorf(codes.Internal, "transport: %v", err) + if st, ok := status.FromError(err); ok { + // Restrict the code to the list allowed by gRFC A54. + if istatus.IsRestrictedControlPlaneCode(st) { + err = status.Errorf(codes.Internal, "transport: received per-RPC creds error with illegal status: %v", err) + } + return nil, err + } + return nil, status.Errorf(codes.Internal, "transport: per-RPC creds failed due to error: %v", err) } callAuthData = make(map[string]string, len(data)) for k, v := range data { @@ -608,26 +677,46 @@ func (t *http2Client) getCallAuthData(ctx context.Context, audience string, call return callAuthData, nil } -// PerformedIOError wraps an error to indicate IO may have been performed -// before the error occurred. -type PerformedIOError struct { +// NewStreamError wraps an error and reports additional information. Typically +// NewStream errors result in transparent retry, as they mean nothing went onto +// the wire. However, there are two notable exceptions: +// +// 1. If the stream headers violate the max header list size allowed by the +// server. It's possible this could succeed on another transport, even if +// it's unlikely, but do not transparently retry. +// 2. If the credentials errored when requesting their headers. In this case, +// it's possible a retry can fix the problem, but indefinitely transparently +// retrying is not appropriate as it is likely the credentials, if they can +// eventually succeed, would need I/O to do so. +type NewStreamError struct { Err error + + AllowTransparentRetry bool } -// Error implements error. -func (p PerformedIOError) Error() string { - return p.Err.Error() +func (e NewStreamError) Error() string { + return e.Err.Error() } // NewStream creates a stream and registers it into the transport as "active" -// streams. -func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Stream, err error) { +// streams. All non-nil errors returned will be *NewStreamError. +func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (*Stream, error) { ctx = peer.NewContext(ctx, t.getPeer()) + + // ServerName field of the resolver returned address takes precedence over + // Host field of CallHdr to determine the :authority header. This is because, + // the ServerName field takes precedence for server authentication during + // TLS handshake, and the :authority header should match the value used + // for server authentication. + if t.address.ServerName != "" { + newCallHdr := *callHdr + newCallHdr.Host = t.address.ServerName + callHdr = &newCallHdr + } + headerFields, err := t.createHeaderFields(ctx, callHdr) if err != nil { - // We may have performed I/O in the per-RPC creds callback, so do not - // allow transparent retry. - return nil, PerformedIOError{err} + return nil, &NewStreamError{Err: err, AllowTransparentRetry: false} } s := t.newStream(ctx, callHdr) cleanup := func(err error) { @@ -649,17 +738,13 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea endStream: false, initStream: func(id uint32) error { t.mu.Lock() - if state := t.state; state != reachable { + // TODO: handle transport closure in loopy instead and remove this + // initStream is never called when transport is draining. + if t.state == closing { t.mu.Unlock() - // Do a quick cleanup. - err := error(errStreamDrain) - if state == closing { - err = ErrConnClosing - } - cleanup(err) - return err + cleanup(ErrConnClosing) + return ErrConnClosing } - t.activeStreams[id] = s if channelz.IsOn() { atomic.AddInt64(&t.czData.streamsStarted, 1) atomic.StoreInt64(&t.czData.lastStreamCreatedTime, time.Now().UnixNano()) @@ -676,6 +761,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea } firstTry := true var ch chan struct{} + transportDrainRequired := false checkForStreamQuota := func(it interface{}) bool { if t.streamQuota <= 0 { // Can go negative if server decreases it. if firstTry { @@ -691,8 +777,20 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea h := it.(*headerFrame) h.streamID = t.nextID t.nextID += 2 + + // Drain client transport if nextID > MaxStreamID which signals gRPC that + // the connection is closed and a new one must be created for subsequent RPCs. + transportDrainRequired = t.nextID > MaxStreamID + s.id = h.streamID s.fc = &inFlow{limit: uint32(t.initialWindowSize)} + t.mu.Lock() + if t.state == draining || t.activeStreams == nil { // Can be niled from Close(). + t.mu.Unlock() + return false // Don't create a stream if the transport is already closed. + } + t.activeStreams[s.id] = s + t.mu.Unlock() if t.streamQuota > 0 && t.waitingStreams > 0 { select { case t.streamsQuotaAvailable <- struct{}{}: @@ -718,52 +816,56 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea } for { success, err := t.controlBuf.executeAndPut(func(it interface{}) bool { - if !checkForStreamQuota(it) { - return false - } - if !checkForHeaderListSize(it) { - return false - } - return true + return checkForHeaderListSize(it) && checkForStreamQuota(it) }, hdr) if err != nil { - return nil, err + // Connection closed. + return nil, &NewStreamError{Err: err, AllowTransparentRetry: true} } if success { break } if hdrListSizeErr != nil { - return nil, hdrListSizeErr + return nil, &NewStreamError{Err: hdrListSizeErr} } firstTry = false select { case <-ch: - case <-s.ctx.Done(): - return nil, ContextErr(s.ctx.Err()) + case <-ctx.Done(): + return nil, &NewStreamError{Err: ContextErr(ctx.Err())} case <-t.goAway: - return nil, errStreamDrain + return nil, &NewStreamError{Err: errStreamDrain, AllowTransparentRetry: true} case <-t.ctx.Done(): - return nil, ErrConnClosing + return nil, &NewStreamError{Err: ErrConnClosing, AllowTransparentRetry: true} } } - if t.statsHandler != nil { + if len(t.statsHandlers) != 0 { header, ok := metadata.FromOutgoingContext(ctx) if ok { header.Set("user-agent", t.userAgent) } else { header = metadata.Pairs("user-agent", t.userAgent) } - // Note: The header fields are compressed with hpack after this call returns. - // No WireLength field is set here. - outHeader := &stats.OutHeader{ - Client: true, - FullMethod: callHdr.Method, - RemoteAddr: t.remoteAddr, - LocalAddr: t.localAddr, - Compression: callHdr.SendCompress, - Header: header, + for _, sh := range t.statsHandlers { + // Note: The header fields are compressed with hpack after this call returns. + // No WireLength field is set here. + // Note: Creating a new stats object to prevent pollution. + outHeader := &stats.OutHeader{ + Client: true, + FullMethod: callHdr.Method, + RemoteAddr: t.remoteAddr, + LocalAddr: t.localAddr, + Compression: callHdr.SendCompress, + Header: header, + } + sh.HandleRPC(s.ctx, outHeader) } - t.statsHandler.HandleRPC(s.ctx, outHeader) + } + if transportDrainRequired { + if t.logger.V(logLevel) { + t.logger.Infof("Draining transport: t.nextID > MaxStreamID") + } + t.GracefulClose() } return s, nil } @@ -846,20 +948,21 @@ func (t *http2Client) closeStream(s *Stream, err error, rst bool, rstCode http2. // Close kicks off the shutdown process of the transport. This should be called // only once on a transport. Once it is called, the transport should not be // accessed any more. -// -// This method blocks until the addrConn that initiated this transport is -// re-connected. This happens because t.onClose() begins reconnect logic at the -// addrConn level and blocks until the addrConn is successfully connected. func (t *http2Client) Close(err error) { t.mu.Lock() - // Make sure we only Close once. + // Make sure we only close once. if t.state == closing { t.mu.Unlock() return } - // Call t.onClose before setting the state to closing to prevent the client - // from attempting to create new streams ASAP. - t.onClose() + if t.logger.V(logLevel) { + t.logger.Infof("Closing: %v", err) + } + // Call t.onClose ASAP to prevent the client from attempting to create new + // streams. + if t.state != draining { + t.onClose(GoAwayInvalid) + } t.state = closing streams := t.activeStreams t.activeStreams = nil @@ -872,24 +975,28 @@ func (t *http2Client) Close(err error) { t.controlBuf.finish() t.cancel() t.conn.Close() - if channelz.IsOn() { - channelz.RemoveEntry(t.channelzID) - } + channelz.RemoveEntry(t.channelzID) // Append info about previous goaways if there were any, since this may be important // for understanding the root cause for this connection to be closed. _, goAwayDebugMessage := t.GetGoAwayReason() + + var st *status.Status if len(goAwayDebugMessage) > 0 { - err = fmt.Errorf("closing transport due to: %v, received prior goaway: %v", err, goAwayDebugMessage) + st = status.Newf(codes.Unavailable, "closing transport due to: %v, received prior goaway: %v", err, goAwayDebugMessage) + err = st.Err() + } else { + st = status.New(codes.Unavailable, err.Error()) } + // Notify all active streams. for _, s := range streams { - t.closeStream(s, err, false, http2.ErrCodeNo, status.New(codes.Unavailable, err.Error()), nil, false) + t.closeStream(s, err, false, http2.ErrCodeNo, st, nil, false) } - if t.statsHandler != nil { + for _, sh := range t.statsHandlers { connEnd := &stats.ConnEnd{ Client: true, } - t.statsHandler.HandleConn(t.ctx, connEnd) + sh.HandleConn(t.ctx, connEnd) } } @@ -905,11 +1012,15 @@ func (t *http2Client) GracefulClose() { t.mu.Unlock() return } + if t.logger.V(logLevel) { + t.logger.Infof("GracefulClose called") + } + t.onClose(GoAwayInvalid) t.state = draining active := len(t.activeStreams) t.mu.Unlock() if active == 0 { - t.Close(ErrConnClosing) + t.Close(connectionErrorf(true, nil, "no active streams left to process while draining")) return } t.controlBuf.put(&incomingGoAway{}) @@ -969,13 +1080,13 @@ func (t *http2Client) updateWindow(s *Stream, n uint32) { // for the transport and the stream based on the current bdp // estimation. func (t *http2Client) updateFlowControl(n uint32) { - t.mu.Lock() - for _, s := range t.activeStreams { - s.fc.newLimit(n) - } - t.mu.Unlock() updateIWS := func(interface{}) bool { t.initialWindowSize = int32(n) + t.mu.Lock() + for _, s := range t.activeStreams { + s.fc.newLimit(n) + } + t.mu.Unlock() return true } t.controlBuf.executeAndPut(updateIWS, &outgoingWindowUpdate{streamID: 0, increment: t.fc.newLimit(n)}) @@ -1050,7 +1161,7 @@ func (t *http2Client) handleData(f *http2.DataFrame) { } // The server has closed the stream without sending trailers. Record that // the read direction is closed, and set the status appropriately. - if f.FrameHeader.Flags.Has(http2.FlagDataEndStream) { + if f.StreamEnded() { t.closeStream(s, io.EOF, false, http2.ErrCodeNo, status.New(codes.Internal, "server closed the stream without sending trailers"), nil, true) } } @@ -1066,8 +1177,8 @@ func (t *http2Client) handleRSTStream(f *http2.RSTStreamFrame) { } statusCode, ok := http2ErrConvTab[f.ErrCode] if !ok { - if logger.V(logLevel) { - logger.Warningf("transport: http2Client.handleRSTStream found no mapped gRPC status for the received http2 error %v", f.ErrCode) + if t.logger.V(logLevel) { + t.logger.Infof("Received a RST_STREAM frame with code %q, but found no mapped gRPC status", f.ErrCode) } statusCode = codes.Unknown } @@ -1149,10 +1260,12 @@ func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) { t.mu.Unlock() return } - if f.ErrCode == http2.ErrCodeEnhanceYourCalm { - if logger.V(logLevel) { - logger.Infof("Client received GoAway with http2.ErrCodeEnhanceYourCalm.") - } + if f.ErrCode == http2.ErrCodeEnhanceYourCalm && string(f.DebugData()) == "too_many_pings" { + // When a client receives a GOAWAY with error code ENHANCE_YOUR_CALM and debug + // data equal to ASCII "too_many_pings", it should log the occurrence at a log level that is + // enabled by default and double the configure KEEPALIVE_TIME used for new connections + // on that channel. + logger.Errorf("Client received GoAway with error code ENHANCE_YOUR_CALM and debug data equal to ASCII \"too_many_pings\".") } id := f.LastStreamID if id > 0 && id%2 == 0 { @@ -1181,12 +1294,14 @@ func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) { default: t.setGoAwayReason(f) close(t.goAway) - t.controlBuf.put(&incomingGoAway{}) + defer t.controlBuf.put(&incomingGoAway{}) // Defer as t.mu is currently held. // Notify the clientconn about the GOAWAY before we set the state to // draining, to allow the client to stop attempting to create streams // before disallowing new streams on this connection. - t.onGoAway(t.goAwayReason) - t.state = draining + if t.state != draining { + t.onClose(t.goAwayReason) + t.state = draining + } } // All streams with IDs greater than the GoAwayId // and smaller than the previous GoAway ID should be killed. @@ -1194,24 +1309,35 @@ func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) { if upperLimit == 0 { // This is the first GoAway Frame. upperLimit = math.MaxUint32 // Kill all streams after the GoAway ID. } + + t.prevGoAwayID = id + if len(t.activeStreams) == 0 { + t.mu.Unlock() + t.Close(connectionErrorf(true, nil, "received goaway and there are no active streams")) + return + } + + streamsToClose := make([]*Stream, 0) for streamID, stream := range t.activeStreams { if streamID > id && streamID <= upperLimit { // The stream was unprocessed by the server. - atomic.StoreUint32(&stream.unprocessed, 1) - t.closeStream(stream, errStreamDrain, false, http2.ErrCodeNo, statusGoAway, nil, false) + if streamID > id && streamID <= upperLimit { + atomic.StoreUint32(&stream.unprocessed, 1) + streamsToClose = append(streamsToClose, stream) + } } } - t.prevGoAwayID = id - active := len(t.activeStreams) t.mu.Unlock() - if active == 0 { - t.Close(connectionErrorf(true, nil, "received goaway and there are no active streams")) + // Called outside t.mu because closeStream can take controlBuf's mu, which + // could induce deadlock and is not allowed. + for _, stream := range streamsToClose { + t.closeStream(stream, errStreamDrain, false, http2.ErrCodeNo, statusGoAway, nil, false) } } // setGoAwayReason sets the value of t.goAwayReason based // on the GoAway frame received. -// It expects a lock on transport's mutext to be held by +// It expects a lock on transport's mutex to be held by // the caller. func (t *http2Client) setGoAwayReason(f *http2.GoAwayFrame) { t.goAwayReason = GoAwayNoReason @@ -1221,7 +1347,11 @@ func (t *http2Client) setGoAwayReason(f *http2.GoAwayFrame) { t.goAwayReason = GoAwayTooManyPings } } - t.goAwayDebugMessage = fmt.Sprintf("code: %s, debug data: %v", f.ErrCode, string(f.DebugData())) + if len(f.DebugData()) == 0 { + t.goAwayDebugMessage = fmt.Sprintf("code: %s", f.ErrCode) + } else { + t.goAwayDebugMessage = fmt.Sprintf("code: %s, debug data: %q", f.ErrCode, string(f.DebugData())) + } } func (t *http2Client) GetGoAwayReason() (GoAwayReason, string) { @@ -1254,35 +1384,128 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { return } - state := &decodeState{} - // Initialize isGRPC value to be !initialHeader, since if a gRPC Response-Headers has already been received, then it means that the peer is speaking gRPC and we are in gRPC mode. - state.data.isGRPC = !initialHeader - if h2code, err := state.decodeHeader(frame); err != nil { - t.closeStream(s, err, true, h2code, status.Convert(err), nil, endStream) + // frame.Truncated is set to true when framer detects that the current header + // list size hits MaxHeaderListSize limit. + if frame.Truncated { + se := status.New(codes.Internal, "peer header list size exceeded limit") + t.closeStream(s, se.Err(), true, http2.ErrCodeFrameSize, se, nil, endStream) return } - isHeader := false - defer func() { - if t.statsHandler != nil { - if isHeader { - inHeader := &stats.InHeader{ - Client: true, - WireLength: int(frame.Header().Length), - Header: s.header.Copy(), - Compression: s.recvCompress, - } - t.statsHandler.HandleRPC(s.ctx, inHeader) - } else { - inTrailer := &stats.InTrailer{ - Client: true, - WireLength: int(frame.Header().Length), - Trailer: s.trailer.Copy(), - } - t.statsHandler.HandleRPC(s.ctx, inTrailer) + var ( + // If a gRPC Response-Headers has already been received, then it means + // that the peer is speaking gRPC and we are in gRPC mode. + isGRPC = !initialHeader + mdata = make(map[string][]string) + contentTypeErr = "malformed header: missing HTTP content-type" + grpcMessage string + statusGen *status.Status + recvCompress string + httpStatusCode *int + httpStatusErr string + rawStatusCode = codes.Unknown + // headerError is set if an error is encountered while parsing the headers + headerError string + ) + + if initialHeader { + httpStatusErr = "malformed header: missing HTTP status" + } + + for _, hf := range frame.Fields { + switch hf.Name { + case "content-type": + if _, validContentType := grpcutil.ContentSubtype(hf.Value); !validContentType { + contentTypeErr = fmt.Sprintf("transport: received unexpected content-type %q", hf.Value) + break + } + contentTypeErr = "" + mdata[hf.Name] = append(mdata[hf.Name], hf.Value) + isGRPC = true + case "grpc-encoding": + recvCompress = hf.Value + case "grpc-status": + code, err := strconv.ParseInt(hf.Value, 10, 32) + if err != nil { + se := status.New(codes.Internal, fmt.Sprintf("transport: malformed grpc-status: %v", err)) + t.closeStream(s, se.Err(), true, http2.ErrCodeProtocol, se, nil, endStream) + return + } + rawStatusCode = codes.Code(uint32(code)) + case "grpc-message": + grpcMessage = decodeGrpcMessage(hf.Value) + case "grpc-status-details-bin": + var err error + statusGen, err = decodeGRPCStatusDetails(hf.Value) + if err != nil { + headerError = fmt.Sprintf("transport: malformed grpc-status-details-bin: %v", err) + } + case ":status": + if hf.Value == "200" { + httpStatusErr = "" + statusCode := 200 + httpStatusCode = &statusCode + break + } + + c, err := strconv.ParseInt(hf.Value, 10, 32) + if err != nil { + se := status.New(codes.Internal, fmt.Sprintf("transport: malformed http-status: %v", err)) + t.closeStream(s, se.Err(), true, http2.ErrCodeProtocol, se, nil, endStream) + return } + statusCode := int(c) + httpStatusCode = &statusCode + + httpStatusErr = fmt.Sprintf( + "unexpected HTTP status code received from server: %d (%s)", + statusCode, + http.StatusText(statusCode), + ) + default: + if isReservedHeader(hf.Name) && !isWhitelistedHeader(hf.Name) { + break + } + v, err := decodeMetadataHeader(hf.Name, hf.Value) + if err != nil { + headerError = fmt.Sprintf("transport: malformed %s: %v", hf.Name, err) + logger.Warningf("Failed to decode metadata header (%q, %q): %v", hf.Name, hf.Value, err) + break + } + mdata[hf.Name] = append(mdata[hf.Name], v) } - }() + } + + if !isGRPC || httpStatusErr != "" { + var code = codes.Internal // when header does not include HTTP status, return INTERNAL + + if httpStatusCode != nil { + var ok bool + code, ok = HTTPStatusConvTab[*httpStatusCode] + if !ok { + code = codes.Unknown + } + } + var errs []string + if httpStatusErr != "" { + errs = append(errs, httpStatusErr) + } + if contentTypeErr != "" { + errs = append(errs, contentTypeErr) + } + // Verify the HTTP response is a 200. + se := status.New(code, strings.Join(errs, "; ")) + t.closeStream(s, se.Err(), true, http2.ErrCodeProtocol, se, nil, endStream) + return + } + + if headerError != "" { + se := status.New(codes.Internal, headerError) + t.closeStream(s, se.Err(), true, http2.ErrCodeProtocol, se, nil, endStream) + return + } + + isHeader := false // If headerChan hasn't been closed yet if atomic.CompareAndSwapUint32(&s.headerChanClosed, 0, 1) { @@ -1293,9 +1516,9 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { // These values can be set without any synchronization because // stream goroutine will read it only after seeing a closed // headerChan which we'll close after setting this. - s.recvCompress = state.data.encoding - if len(state.data.mdata) > 0 { - s.header = state.data.mdata + s.recvCompress = recvCompress + if len(mdata) > 0 { + s.header = mdata } } else { // HEADERS frame block carries a Trailers-Only. @@ -1304,42 +1527,67 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { close(s.headerChan) } + for _, sh := range t.statsHandlers { + if isHeader { + inHeader := &stats.InHeader{ + Client: true, + WireLength: int(frame.Header().Length), + Header: metadata.MD(mdata).Copy(), + Compression: s.recvCompress, + } + sh.HandleRPC(s.ctx, inHeader) + } else { + inTrailer := &stats.InTrailer{ + Client: true, + WireLength: int(frame.Header().Length), + Trailer: metadata.MD(mdata).Copy(), + } + sh.HandleRPC(s.ctx, inTrailer) + } + } + if !endStream { return } + if statusGen == nil { + statusGen = status.New(rawStatusCode, grpcMessage) + } + // if client received END_STREAM from server while stream was still active, send RST_STREAM rst := s.getState() == streamActive - t.closeStream(s, io.EOF, rst, http2.ErrCodeNo, state.status(), state.data.mdata, true) + t.closeStream(s, io.EOF, rst, http2.ErrCodeNo, statusGen, mdata, true) } -// reader runs as a separate goroutine in charge of reading data from network -// connection. -// -// TODO(zhaoq): currently one reader per transport. Investigate whether this is -// optimal. -// TODO(zhaoq): Check the validity of the incoming frame sequence. -func (t *http2Client) reader() { - defer close(t.readerDone) - // Check the validity of server preface. +// readServerPreface reads and handles the initial settings frame from the +// server. +func (t *http2Client) readServerPreface() error { frame, err := t.framer.fr.ReadFrame() if err != nil { - err = connectionErrorf(true, err, "error reading server preface: %v", err) - t.Close(err) // this kicks off resetTransport, so must be last before return - return - } - t.conn.SetReadDeadline(time.Time{}) // reset deadline once we get the settings frame (we didn't time out, yay!) - if t.keepaliveEnabled { - atomic.StoreInt64(&t.lastRead, time.Now().UnixNano()) + return connectionErrorf(true, err, "error reading server preface: %v", err) } sf, ok := frame.(*http2.SettingsFrame) if !ok { - // this kicks off resetTransport, so must be last before return - t.Close(connectionErrorf(true, nil, "initial http2 frame from server is not a settings frame: %T", frame)) - return + return connectionErrorf(true, nil, "initial http2 frame from server is not a settings frame: %T", frame) } - t.onPrefaceReceipt() t.handleSettings(sf, true) + return nil +} + +// reader verifies the server preface and reads all subsequent data from +// network connection. If the server preface is not read successfully, an +// error is pushed to errCh; otherwise errCh is closed with no error. +func (t *http2Client) reader(errCh chan<- error) { + defer close(t.readerDone) + + if err := t.readServerPreface(); err != nil { + errCh <- err + return + } + close(errCh) + if t.keepaliveEnabled { + atomic.StoreInt64(&t.lastRead, time.Now().UnixNano()) + } // loop to keep reading incoming messages on this transport. for { @@ -1405,7 +1653,7 @@ func minTime(a, b time.Duration) time.Duration { return b } -// keepalive running in a separate goroutune makes sure the connection is alive by sending pings. +// keepalive running in a separate goroutine makes sure the connection is alive by sending pings. func (t *http2Client) keepalive() { p := &ping{data: [8]byte{}} // True iff a ping has been sent, and no data has been received since then. @@ -1542,3 +1790,9 @@ func (t *http2Client) getOutFlowWindow() int64 { return -2 } } + +func (t *http2Client) stateForTesting() transportState { + t.mu.Lock() + defer t.mu.Unlock() + return t.state +} diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_server.go b/vendor/google.golang.org/grpc/internal/transport/http2_server.go index 11be5599..f9606401 100644 --- a/vendor/google.golang.org/grpc/internal/transport/http2_server.go +++ b/vendor/google.golang.org/grpc/internal/transport/http2_server.go @@ -35,12 +35,16 @@ import ( "github.com/golang/protobuf/proto" "golang.org/x/net/http2" "golang.org/x/net/http2/hpack" + "google.golang.org/grpc/internal/grpclog" "google.golang.org/grpc/internal/grpcutil" + "google.golang.org/grpc/internal/pretty" + "google.golang.org/grpc/internal/syscall" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/internal/grpcrand" + "google.golang.org/grpc/internal/grpcsync" "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" @@ -52,10 +56,10 @@ import ( var ( // ErrIllegalHeaderWrite indicates that setting header is illegal because of // the stream's state. - ErrIllegalHeaderWrite = errors.New("transport: the stream is done or WriteHeader was already called") + ErrIllegalHeaderWrite = status.Error(codes.Internal, "transport: SendHeader called multiple times") // ErrHeaderListSizeLimitViolation indicates that the header list size is larger // than the limit set by peer. - ErrHeaderListSizeLimitViolation = errors.New("transport: trying to send header list size larger than the limit set by peer") + ErrHeaderListSizeLimitViolation = status.Error(codes.Internal, "transport: trying to send header list size larger than the limit set by peer") ) // serverConnectionCounter counts the number of connections a server has seen @@ -73,7 +77,6 @@ type http2Server struct { writerDone chan struct{} // sync point to enable testing. remoteAddr net.Addr localAddr net.Addr - maxStreamID uint32 // max stream ID ever seen authInfo credentials.AuthInfo // auth info about the connection inTapHandle tap.ServerInHandle framer *framer @@ -83,7 +86,7 @@ type http2Server struct { // updates, reset streams, and various settings) to the controller. controlBuf *controlBuffer fc *trInFlow - stats stats.Handler + stats []stats.Handler // Keepalive and max-age parameters for the server. kp keepalive.ServerParameters // Keepalive enforcement policy. @@ -102,13 +105,13 @@ type http2Server struct { mu sync.Mutex // guard the following - // drainChan is initialized when drain(...) is called the first time. - // After which the server writes out the first GoAway(with ID 2^31-1) frame. - // Then an independent goroutine will be launched to later send the second GoAway. - // During this time we don't want to write another first GoAway(with ID 2^31 -1) frame. - // Thus call to drain(...) will be a no-op if drainChan is already initialized since draining is - // already underway. - drainChan chan struct{} + // drainEvent is initialized when Drain() is called the first time. After + // which the server writes out the first GoAway(with ID 2^31-1) frame. Then + // an independent goroutine will be launched to later send the second + // GoAway. During this time we don't want to write another first GoAway(with + // ID 2^31 -1) frame. Thus call to Drain() will be a no-op if drainEvent is + // already initialized since draining is already underway. + drainEvent *grpcsync.Event state transportState activeStreams map[uint32]*Stream // idle is the time instant when the connection went idle. @@ -118,16 +121,44 @@ type http2Server struct { idle time.Time // Fields below are for channelz metric collection. - channelzID int64 // channelz unique identification number + channelzID *channelz.Identifier czData *channelzData bufferPool *bufferPool connectionID uint64 + + // maxStreamMu guards the maximum stream ID + // This lock may not be taken if mu is already held. + maxStreamMu sync.Mutex + maxStreamID uint32 // max stream ID ever seen + + logger *grpclog.PrefixLogger } -// newHTTP2Server constructs a ServerTransport based on HTTP2. ConnectionError is -// returned if something goes wrong. -func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err error) { +// NewServerTransport creates a http2 transport with conn and configuration +// options from config. +// +// It returns a non-nil transport and a nil error on success. On failure, it +// returns a nil transport and a non-nil error. For a special case where the +// underlying conn gets closed before the client preface could be read, it +// returns a nil transport and a nil error. +func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport, err error) { + var authInfo credentials.AuthInfo + rawConn := conn + if config.Credentials != nil { + var err error + conn, authInfo, err = config.Credentials.ServerHandshake(rawConn) + if err != nil { + // ErrConnDispatched means that the connection was dispatched away + // from gRPC; those connections should be left open. io.EOF means + // the connection was closed before handshaking completed, which can + // happen naturally from probers. Return these errors directly. + if err == credentials.ErrConnDispatched || err == io.EOF { + return nil, err + } + return nil, connectionErrorf(false, err, "ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err) + } + } writeBufSize := config.WriteBufferSize readBufSize := config.ReadBufferSize maxHeaderListSize := defaultServerMaxHeaderListSize @@ -206,18 +237,24 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err if kp.Timeout == 0 { kp.Timeout = defaultServerKeepaliveTimeout } + if kp.Time != infinity { + if err = syscall.SetTCPUserTimeout(rawConn, kp.Timeout); err != nil { + return nil, connectionErrorf(false, err, "transport: failed to set TCP_USER_TIMEOUT: %v", err) + } + } kep := config.KeepalivePolicy if kep.MinTime == 0 { kep.MinTime = defaultKeepalivePolicyMinTime } + done := make(chan struct{}) t := &http2Server{ - ctx: context.Background(), + ctx: setConnection(context.Background(), rawConn), done: done, conn: conn, remoteAddr: conn.RemoteAddr(), localAddr: conn.LocalAddr(), - authInfo: config.AuthInfo, + authInfo: authInfo, framer: framer, readerDone: make(chan struct{}), writerDone: make(chan struct{}), @@ -226,7 +263,7 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err fc: &trInFlow{limit: uint32(icwz)}, state: reachable, activeStreams: make(map[uint32]*Stream), - stats: config.StatsHandler, + stats: config.StatsHandlers, kp: kp, idle: time.Now(), kep: kep, @@ -234,6 +271,10 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err czData: new(channelzData), bufferPool: newBufferPool(), } + t.logger = prefixLoggerForServerTransport(t) + // Add peer information to the http2server context. + t.ctx = peer.NewContext(t.ctx, t.getPeer()) + t.controlBuf = newControlBuffer(t.done) if dynamicWindow { t.bdpEst = &bdpEstimator{ @@ -241,31 +282,39 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err updateFlowControl: t.updateFlowControl, } } - if t.stats != nil { - t.ctx = t.stats.TagConn(t.ctx, &stats.ConnTagInfo{ + for _, sh := range t.stats { + t.ctx = sh.TagConn(t.ctx, &stats.ConnTagInfo{ RemoteAddr: t.remoteAddr, LocalAddr: t.localAddr, }) connBegin := &stats.ConnBegin{} - t.stats.HandleConn(t.ctx, connBegin) + sh.HandleConn(t.ctx, connBegin) } - if channelz.IsOn() { - t.channelzID = channelz.RegisterNormalSocket(t, config.ChannelzParentID, fmt.Sprintf("%s -> %s", t.remoteAddr, t.localAddr)) + t.channelzID, err = channelz.RegisterNormalSocket(t, config.ChannelzParentID, fmt.Sprintf("%s -> %s", t.remoteAddr, t.localAddr)) + if err != nil { + return nil, err } t.connectionID = atomic.AddUint64(&serverConnectionCounter, 1) - t.framer.writer.Flush() defer func() { if err != nil { - t.Close() + t.Close(err) } }() // Check the validity of client preface. preface := make([]byte, len(clientPreface)) if _, err := io.ReadFull(t.conn, preface); err != nil { + // In deployments where a gRPC server runs behind a cloud load balancer + // which performs regular TCP level health checks, the connection is + // closed immediately by the latter. Returning io.EOF here allows the + // grpc server implementation to recognize this scenario and suppress + // logging to reduce spam. + if err == io.EOF { + return nil, io.EOF + } return nil, connectionErrorf(false, err, "transport: http2Server.HandleStreams failed to receive the preface from client: %v", err) } if !bytes.Equal(preface, clientPreface) { @@ -287,80 +336,206 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err t.handleSettings(sf) go func() { - t.loopy = newLoopyWriter(serverSide, t.framer, t.controlBuf, t.bdpEst) + t.loopy = newLoopyWriter(serverSide, t.framer, t.controlBuf, t.bdpEst, t.conn, t.logger) t.loopy.ssGoAwayHandler = t.outgoingGoAwayHandler - if err := t.loopy.run(); err != nil { - if logger.V(logLevel) { - logger.Errorf("transport: loopyWriter.run returning. Err: %v", err) - } - } - t.conn.Close() + t.loopy.run() close(t.writerDone) }() go t.keepalive() return t, nil } -// operateHeader takes action on the decoded headers. -func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(*Stream), traceCtx func(context.Context, string) context.Context) (fatal bool) { +// operateHeaders takes action on the decoded headers. Returns an error if fatal +// error encountered and transport needs to close, otherwise returns nil. +func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(*Stream), traceCtx func(context.Context, string) context.Context) error { + // Acquire max stream ID lock for entire duration + t.maxStreamMu.Lock() + defer t.maxStreamMu.Unlock() + streamID := frame.Header().StreamID - state := &decodeState{ - serverSide: true, - } - if h2code, err := state.decodeHeader(frame); err != nil { - if _, ok := status.FromError(err); ok { - t.controlBuf.put(&cleanupStream{ - streamID: streamID, - rst: true, - rstCode: h2code, - onWrite: func() {}, - }) - } - return false + + // frame.Truncated is set to true when framer detects that the current header + // list size hits MaxHeaderListSize limit. + if frame.Truncated { + t.controlBuf.put(&cleanupStream{ + streamID: streamID, + rst: true, + rstCode: http2.ErrCodeFrameSize, + onWrite: func() {}, + }) + return nil } + if streamID%2 != 1 || streamID <= t.maxStreamID { + // illegal gRPC stream id. + return fmt.Errorf("received an illegal stream id: %v. headers frame: %+v", streamID, frame) + } + t.maxStreamID = streamID + buf := newRecvBuffer() s := &Stream{ - id: streamID, - st: t, - buf: buf, - fc: &inFlow{limit: uint32(t.initialWindowSize)}, - recvCompress: state.data.encoding, - method: state.data.method, - contentSubtype: state.data.contentSubtype, + id: streamID, + st: t, + buf: buf, + fc: &inFlow{limit: uint32(t.initialWindowSize)}, + } + var ( + // if false, content-type was missing or invalid + isGRPC = false + contentType = "" + mdata = make(metadata.MD, len(frame.Fields)) + httpMethod string + // these are set if an error is encountered while parsing the headers + protocolError bool + headerError *status.Status + + timeoutSet bool + timeout time.Duration + ) + + for _, hf := range frame.Fields { + switch hf.Name { + case "content-type": + contentSubtype, validContentType := grpcutil.ContentSubtype(hf.Value) + if !validContentType { + contentType = hf.Value + break + } + mdata[hf.Name] = append(mdata[hf.Name], hf.Value) + s.contentSubtype = contentSubtype + isGRPC = true + + case "grpc-accept-encoding": + mdata[hf.Name] = append(mdata[hf.Name], hf.Value) + if hf.Value == "" { + continue + } + compressors := hf.Value + if s.clientAdvertisedCompressors != "" { + compressors = s.clientAdvertisedCompressors + "," + compressors + } + s.clientAdvertisedCompressors = compressors + case "grpc-encoding": + s.recvCompress = hf.Value + case ":method": + httpMethod = hf.Value + case ":path": + s.method = hf.Value + case "grpc-timeout": + timeoutSet = true + var err error + if timeout, err = decodeTimeout(hf.Value); err != nil { + headerError = status.Newf(codes.Internal, "malformed grpc-timeout: %v", err) + } + // "Transports must consider requests containing the Connection header + // as malformed." - A41 + case "connection": + if t.logger.V(logLevel) { + t.logger.Infof("Received a HEADERS frame with a :connection header which makes the request malformed, as per the HTTP/2 spec") + } + protocolError = true + default: + if isReservedHeader(hf.Name) && !isWhitelistedHeader(hf.Name) { + break + } + v, err := decodeMetadataHeader(hf.Name, hf.Value) + if err != nil { + headerError = status.Newf(codes.Internal, "malformed binary metadata %q in header %q: %v", hf.Value, hf.Name, err) + t.logger.Warningf("Failed to decode metadata header (%q, %q): %v", hf.Name, hf.Value, err) + break + } + mdata[hf.Name] = append(mdata[hf.Name], v) + } + } + + // "If multiple Host headers or multiple :authority headers are present, the + // request must be rejected with an HTTP status code 400 as required by Host + // validation in RFC 7230 §5.4, gRPC status code INTERNAL, or RST_STREAM + // with HTTP/2 error code PROTOCOL_ERROR." - A41. Since this is a HTTP/2 + // error, this takes precedence over a client not speaking gRPC. + if len(mdata[":authority"]) > 1 || len(mdata["host"]) > 1 { + errMsg := fmt.Sprintf("num values of :authority: %v, num values of host: %v, both must only have 1 value as per HTTP/2 spec", len(mdata[":authority"]), len(mdata["host"])) + if t.logger.V(logLevel) { + t.logger.Infof("Aborting the stream early: %v", errMsg) + } + t.controlBuf.put(&earlyAbortStream{ + httpStatus: http.StatusBadRequest, + streamID: streamID, + contentSubtype: s.contentSubtype, + status: status.New(codes.Internal, errMsg), + rst: !frame.StreamEnded(), + }) + return nil + } + + if protocolError { + t.controlBuf.put(&cleanupStream{ + streamID: streamID, + rst: true, + rstCode: http2.ErrCodeProtocol, + onWrite: func() {}, + }) + return nil + } + if !isGRPC { + t.controlBuf.put(&earlyAbortStream{ + httpStatus: http.StatusUnsupportedMediaType, + streamID: streamID, + contentSubtype: s.contentSubtype, + status: status.Newf(codes.InvalidArgument, "invalid gRPC request content-type %q", contentType), + rst: !frame.StreamEnded(), + }) + return nil } + if headerError != nil { + t.controlBuf.put(&earlyAbortStream{ + httpStatus: http.StatusBadRequest, + streamID: streamID, + contentSubtype: s.contentSubtype, + status: headerError, + rst: !frame.StreamEnded(), + }) + return nil + } + + // "If :authority is missing, Host must be renamed to :authority." - A41 + if len(mdata[":authority"]) == 0 { + // No-op if host isn't present, no eventual :authority header is a valid + // RPC. + if host, ok := mdata["host"]; ok { + mdata[":authority"] = host + delete(mdata, "host") + } + } else { + // "If :authority is present, Host must be discarded" - A41 + delete(mdata, "host") + } + if frame.StreamEnded() { // s is just created by the caller. No lock needed. s.state = streamReadDone } - if state.data.timeoutSet { - s.ctx, s.cancel = context.WithTimeout(t.ctx, state.data.timeout) + if timeoutSet { + s.ctx, s.cancel = context.WithTimeout(t.ctx, timeout) } else { s.ctx, s.cancel = context.WithCancel(t.ctx) } - pr := &peer.Peer{ - Addr: t.remoteAddr, - } - // Attach Auth info if there is any. - if t.authInfo != nil { - pr.AuthInfo = t.authInfo - } - s.ctx = peer.NewContext(s.ctx, pr) + // Attach the received metadata to the context. - if len(state.data.mdata) > 0 { - s.ctx = metadata.NewIncomingContext(s.ctx, state.data.mdata) - } - if state.data.statsTags != nil { - s.ctx = stats.SetIncomingTags(s.ctx, state.data.statsTags) - } - if state.data.statsTrace != nil { - s.ctx = stats.SetIncomingTrace(s.ctx, state.data.statsTrace) + if len(mdata) > 0 { + s.ctx = metadata.NewIncomingContext(s.ctx, mdata) + if statsTags := mdata["grpc-tags-bin"]; len(statsTags) > 0 { + s.ctx = stats.SetIncomingTags(s.ctx, []byte(statsTags[len(statsTags)-1])) + } + if statsTrace := mdata["grpc-trace-bin"]; len(statsTrace) > 0 { + s.ctx = stats.SetIncomingTrace(s.ctx, []byte(statsTrace[len(statsTrace)-1])) + } } t.mu.Lock() if t.state != reachable { t.mu.Unlock() s.cancel() - return false + return nil } if uint32(len(t.activeStreams)) >= t.maxStreams { t.mu.Unlock() @@ -371,49 +546,43 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( onWrite: func() {}, }) s.cancel() - return false - } - if streamID%2 != 1 || streamID <= t.maxStreamID { - t.mu.Unlock() - // illegal gRPC stream id. - if logger.V(logLevel) { - logger.Errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", streamID) - } - s.cancel() - return true + return nil } - t.maxStreamID = streamID - if state.data.httpMethod != http.MethodPost { + if httpMethod != http.MethodPost { t.mu.Unlock() - if logger.V(logLevel) { - logger.Warningf("transport: http2Server.operateHeaders parsed a :method field: %v which should be POST", state.data.httpMethod) + errMsg := fmt.Sprintf("Received a HEADERS frame with :method %q which should be POST", httpMethod) + if t.logger.V(logLevel) { + t.logger.Infof("Aborting the stream early: %v", errMsg) } - t.controlBuf.put(&cleanupStream{ - streamID: streamID, - rst: true, - rstCode: http2.ErrCodeProtocol, - onWrite: func() {}, + t.controlBuf.put(&earlyAbortStream{ + httpStatus: 405, + streamID: streamID, + contentSubtype: s.contentSubtype, + status: status.New(codes.Internal, errMsg), + rst: !frame.StreamEnded(), }) s.cancel() - return false + return nil } if t.inTapHandle != nil { var err error - if s.ctx, err = t.inTapHandle(s.ctx, &tap.Info{FullMethodName: state.data.method}); err != nil { + if s.ctx, err = t.inTapHandle(s.ctx, &tap.Info{FullMethodName: s.method}); err != nil { t.mu.Unlock() - if logger.V(logLevel) { - logger.Infof("transport: http2Server.operateHeaders got an error from InTapHandle: %v", err) + if t.logger.V(logLevel) { + t.logger.Infof("Aborting the stream early due to InTapHandle failure: %v", err) } stat, ok := status.FromError(err) if !ok { stat = status.New(codes.PermissionDenied, err.Error()) } t.controlBuf.put(&earlyAbortStream{ + httpStatus: 200, streamID: s.id, contentSubtype: s.contentSubtype, status: stat, + rst: !frame.StreamEnded(), }) - return false + return nil } } t.activeStreams[streamID] = s @@ -429,17 +598,17 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( t.adjustWindow(s, uint32(n)) } s.ctx = traceCtx(s.ctx, s.method) - if t.stats != nil { - s.ctx = t.stats.TagRPC(s.ctx, &stats.RPCTagInfo{FullMethodName: s.method}) + for _, sh := range t.stats { + s.ctx = sh.TagRPC(s.ctx, &stats.RPCTagInfo{FullMethodName: s.method}) inHeader := &stats.InHeader{ FullMethod: s.method, RemoteAddr: t.remoteAddr, LocalAddr: t.localAddr, Compression: s.recvCompress, WireLength: int(frame.Header().Length), - Header: metadata.MD(state.data.mdata).Copy(), + Header: mdata.Copy(), } - t.stats.HandleRPC(s.ctx, inHeader) + sh.HandleRPC(s.ctx, inHeader) } s.ctxDone = s.ctx.Done() s.wq = newWriteQuota(defaultWriteQuota, s.ctxDone) @@ -460,7 +629,7 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( wq: s.wq, }) handle(s) - return false + return nil } // HandleStreams receives incoming streams using the given handler. This is @@ -474,8 +643,8 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. atomic.StoreInt64(&t.lastRead, time.Now().UnixNano()) if err != nil { if se, ok := err.(http2.StreamError); ok { - if logger.V(logLevel) { - logger.Warningf("transport: http2Server.HandleStreams encountered http2.StreamError: %v", se) + if t.logger.V(logLevel) { + t.logger.Warningf("Encountered http2.StreamError: %v", se) } t.mu.Lock() s := t.activeStreams[se.StreamID] @@ -493,19 +662,16 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. continue } if err == io.EOF || err == io.ErrUnexpectedEOF { - t.Close() + t.Close(err) return } - if logger.V(logLevel) { - logger.Warningf("transport: http2Server.HandleStreams failed to read frame: %v", err) - } - t.Close() + t.Close(err) return } switch frame := frame.(type) { case *http2.MetaHeadersFrame: - if t.operateHeaders(frame, handle, traceCtx) { - t.Close() + if err := t.operateHeaders(frame, handle, traceCtx); err != nil { + t.Close(err) break } case *http2.DataFrame: @@ -521,8 +687,8 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. case *http2.GoAwayFrame: // TODO: Handle GoAway from the client appropriately. default: - if logger.V(logLevel) { - logger.Errorf("transport: http2Server.HandleStreams found unhandled frame type %v.", frame) + if t.logger.V(logLevel) { + t.logger.Infof("Received unsupported frame type %T", frame) } } } @@ -649,7 +815,7 @@ func (t *http2Server) handleData(f *http2.DataFrame) { s.write(recvMsg{buffer: buffer}) } } - if f.Header().Flags.Has(http2.FlagDataEndStream) { + if f.StreamEnded() { // Received the end of stream from the client. s.compareAndSwapState(streamActive, streamReadDone) s.write(recvMsg{err: io.EOF}) @@ -706,8 +872,8 @@ const ( func (t *http2Server) handlePing(f *http2.PingFrame) { if f.IsAck() { - if f.Data == goAwayPing.data && t.drainChan != nil { - close(t.drainChan) + if f.Data == goAwayPing.data && t.drainEvent != nil { + t.drainEvent.Fire() return } // Maybe it's a BDP ping. @@ -749,10 +915,7 @@ func (t *http2Server) handlePing(f *http2.PingFrame) { if t.pingStrikes > maxPingStrikes { // Send goaway and close the connection. - if logger.V(logLevel) { - logger.Errorf("transport: Got too many pings from the client, closing the connection.") - } - t.controlBuf.put(&goAway{code: http2.ErrCodeEnhanceYourCalm, debugData: []byte("too_many_pings"), closeConn: true}) + t.controlBuf.put(&goAway{code: http2.ErrCodeEnhanceYourCalm, debugData: []byte("too_many_pings"), closeConn: errors.New("got too many pings from the client")}) } } @@ -784,8 +947,8 @@ func (t *http2Server) checkForHeaderListSize(it interface{}) bool { var sz int64 for _, f := range hdrFrame.hf { if sz += int64(f.Size()); sz > int64(*t.maxSendHeaderListSize) { - if logger.V(logLevel) { - logger.Errorf("header list size to send violates the maximum size (%d bytes) set by client", *t.maxSendHeaderListSize) + if t.logger.V(logLevel) { + t.logger.Infof("Header list size to send violates the maximum size (%d bytes) set by client", *t.maxSendHeaderListSize) } return false } @@ -793,12 +956,27 @@ func (t *http2Server) checkForHeaderListSize(it interface{}) bool { return true } +func (t *http2Server) streamContextErr(s *Stream) error { + select { + case <-t.done: + return ErrConnClosing + default: + } + return ContextErr(s.ctx.Err()) +} + // WriteHeader sends the header metadata md back to the client. func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error { - if s.updateHeaderSent() || s.getState() == streamDone { + s.hdrMu.Lock() + defer s.hdrMu.Unlock() + if s.getState() == streamDone { + return t.streamContextErr(s) + } + + if s.updateHeaderSent() { return ErrIllegalHeaderWrite } - s.hdrMu.Lock() + if md.Len() > 0 { if s.header.Len() > 0 { s.header = metadata.Join(s.header, md) @@ -807,10 +985,8 @@ func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error { } } if err := t.writeHeaderLocked(s); err != nil { - s.hdrMu.Unlock() - return err + return status.Convert(err).Err() } - s.hdrMu.Unlock() return nil } @@ -841,14 +1017,14 @@ func (t *http2Server) writeHeaderLocked(s *Stream) error { t.closeStream(s, true, http2.ErrCodeInternal, false) return ErrHeaderListSizeLimitViolation } - if t.stats != nil { + for _, sh := range t.stats { // Note: Headers are compressed with hpack after this call returns. // No WireLength field is set here. outHeader := &stats.OutHeader{ Header: s.header.Copy(), Compression: s.sendCompress, } - t.stats.HandleRPC(s.Context(), outHeader) + sh.HandleRPC(s.Context(), outHeader) } return nil } @@ -858,17 +1034,19 @@ func (t *http2Server) writeHeaderLocked(s *Stream) error { // TODO(zhaoq): Now it indicates the end of entire stream. Revisit if early // OK is adopted. func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { + s.hdrMu.Lock() + defer s.hdrMu.Unlock() + if s.getState() == streamDone { return nil } - s.hdrMu.Lock() + // TODO(mmukhi): Benchmark if the performance gets better if count the metadata and other header fields // first and create a slice of that exact size. headerFields := make([]hpack.HeaderField, 0, 2) // grpc-status and grpc-message will be there if none else. if !s.updateHeaderSent() { // No headers have been sent. if len(s.header) > 0 { // Send a separate header frame. if err := t.writeHeaderLocked(s); err != nil { - s.hdrMu.Unlock() return err } } else { // Send a trailer only response. @@ -883,7 +1061,7 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { stBytes, err := proto.Marshal(p) if err != nil { // TODO: return error instead, when callers are able to handle it. - logger.Errorf("transport: failed to marshal rpc status: %v, error: %v", p, err) + t.logger.Errorf("Failed to marshal rpc status: %s, error: %v", pretty.ToJSON(p), err) } else { headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-status-details-bin", Value: encodeBinHeader(stBytes)}) } @@ -897,7 +1075,7 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { endStream: true, onWrite: t.setResetPingStrikes, } - s.hdrMu.Unlock() + success, err := t.controlBuf.execute(t.checkForHeaderListSize, trailingHeader) if !success { if err != nil { @@ -909,10 +1087,10 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { // Send a RST_STREAM after the trailers if the client has not already half-closed. rst := s.getState() == streamActive t.finishStream(s, rst, http2.ErrCodeNo, trailingHeader, true) - if t.stats != nil { + for _, sh := range t.stats { // Note: The trailer fields are compressed with hpack after this call returns. // No WireLength field is set here. - t.stats.HandleRPC(s.Context(), &stats.OutTrailer{ + sh.HandleRPC(s.Context(), &stats.OutTrailer{ Trailer: s.trailer.Copy(), }) } @@ -924,23 +1102,12 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) error { if !s.isHeaderSent() { // Headers haven't been written yet. if err := t.WriteHeader(s, nil); err != nil { - if _, ok := err.(ConnectionError); ok { - return err - } - // TODO(mmukhi, dfawley): Make sure this is the right code to return. - return status.Errorf(codes.Internal, "transport: %v", err) + return err } } else { // Writing headers checks for this condition. if s.getState() == streamDone { - // TODO(mmukhi, dfawley): Should the server write also return io.EOF? - s.cancel() - select { - case <-t.done: - return ErrConnClosing - default: - } - return ContextErr(s.ctx.Err()) + return t.streamContextErr(s) } } df := &dataFrame{ @@ -950,12 +1117,7 @@ func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) e onEachWrite: t.setResetPingStrikes, } if err := s.wq.get(int32(len(hdr) + len(data))); err != nil { - select { - case <-t.done: - return ErrConnClosing - default: - } - return ContextErr(s.ctx.Err()) + return t.streamContextErr(s) } return t.controlBuf.put(df) } @@ -1004,20 +1166,20 @@ func (t *http2Server) keepalive() { if val <= 0 { // The connection has been idle for a duration of keepalive.MaxConnectionIdle or more. // Gracefully close the connection. - t.drain(http2.ErrCodeNo, []byte{}) + t.Drain("max_idle") return } idleTimer.Reset(val) case <-ageTimer.C: - t.drain(http2.ErrCodeNo, []byte{}) + t.Drain("max_age") ageTimer.Reset(t.kp.MaxConnectionAgeGrace) select { case <-ageTimer.C: // Close the connection after grace period. - if logger.V(logLevel) { - logger.Infof("transport: closing server transport due to maximum connection age.") + if t.logger.V(logLevel) { + t.logger.Infof("Closing server transport due to maximum connection age") } - t.Close() + t.controlBuf.put(closeConnection{}) case <-t.done: } return @@ -1033,10 +1195,7 @@ func (t *http2Server) keepalive() { continue } if outstandingPing && kpTimeoutLeft <= 0 { - if logger.V(logLevel) { - logger.Infof("transport: closing server transport due to idleness.") - } - t.Close() + t.Close(fmt.Errorf("keepalive ping not acked within timeout %s", t.kp.Time)) return } if !outstandingPing { @@ -1063,11 +1222,14 @@ func (t *http2Server) keepalive() { // Close starts shutting down the http2Server transport. // TODO(zhaoq): Now the destruction is not blocked on any pending streams. This // could cause some resource issue. Revisit this later. -func (t *http2Server) Close() error { +func (t *http2Server) Close(err error) { t.mu.Lock() if t.state == closing { t.mu.Unlock() - return errors.New("transport: Close() was already called") + return + } + if t.logger.V(logLevel) { + t.logger.Infof("Closing: %v", err) } t.state = closing streams := t.activeStreams @@ -1075,27 +1237,22 @@ func (t *http2Server) Close() error { t.mu.Unlock() t.controlBuf.finish() close(t.done) - err := t.conn.Close() - if channelz.IsOn() { - channelz.RemoveEntry(t.channelzID) + if err := t.conn.Close(); err != nil && t.logger.V(logLevel) { + t.logger.Infof("Error closing underlying net.Conn during Close: %v", err) } + channelz.RemoveEntry(t.channelzID) // Cancel all active streams. for _, s := range streams { s.cancel() } - if t.stats != nil { + for _, sh := range t.stats { connEnd := &stats.ConnEnd{} - t.stats.HandleConn(t.ctx, connEnd) + sh.HandleConn(t.ctx, connEnd) } - return err } // deleteStream deletes the stream s from transport's active streams. func (t *http2Server) deleteStream(s *Stream, eosReceived bool) { - // In case stream sending and receiving are invoked in separate - // goroutines (e.g., bi-directional streaming), cancel needs to be - // called to interrupt the potential blocking on other goroutines. - s.cancel() t.mu.Lock() if _, ok := t.activeStreams[s.id]; ok { @@ -1117,6 +1274,11 @@ func (t *http2Server) deleteStream(s *Stream, eosReceived bool) { // finishStream closes the stream and puts the trailing headerFrame into controlbuf. func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, hdr *headerFrame, eosReceived bool) { + // In case stream sending and receiving are invoked in separate + // goroutines (e.g., bi-directional streaming), cancel needs to be + // called to interrupt the potential blocking on other goroutines. + s.cancel() + oldState := s.swapState(streamDone) if oldState == streamDone { // If the stream was already done, return. @@ -1136,6 +1298,11 @@ func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, h // closeStream clears the footprint of a stream when the stream is not needed any more. func (t *http2Server) closeStream(s *Stream, rst bool, rstCode http2.ErrCode, eosReceived bool) { + // In case stream sending and receiving are invoked in separate + // goroutines (e.g., bi-directional streaming), cancel needs to be + // called to interrupt the potential blocking on other goroutines. + s.cancel() + s.swapState(streamDone) t.deleteStream(s, eosReceived) @@ -1151,18 +1318,14 @@ func (t *http2Server) RemoteAddr() net.Addr { return t.remoteAddr } -func (t *http2Server) Drain() { - t.drain(http2.ErrCodeNo, []byte{}) -} - -func (t *http2Server) drain(code http2.ErrCode, debugData []byte) { +func (t *http2Server) Drain(debugData string) { t.mu.Lock() defer t.mu.Unlock() - if t.drainChan != nil { + if t.drainEvent != nil { return } - t.drainChan = make(chan struct{}) - t.controlBuf.put(&goAway{code: code, debugData: debugData, headsUp: true}) + t.drainEvent = grpcsync.NewEvent() + t.controlBuf.put(&goAway{code: http2.ErrCodeNo, debugData: []byte(debugData), headsUp: true}) } var goAwayPing = &ping{data: [8]byte{1, 6, 1, 8, 0, 3, 3, 9}} @@ -1170,39 +1333,41 @@ var goAwayPing = &ping{data: [8]byte{1, 6, 1, 8, 0, 3, 3, 9}} // Handles outgoing GoAway and returns true if loopy needs to put itself // in draining mode. func (t *http2Server) outgoingGoAwayHandler(g *goAway) (bool, error) { + t.maxStreamMu.Lock() t.mu.Lock() if t.state == closing { // TODO(mmukhi): This seems unnecessary. t.mu.Unlock() + t.maxStreamMu.Unlock() // The transport is closing. return false, ErrConnClosing } - sid := t.maxStreamID if !g.headsUp { // Stop accepting more streams now. t.state = draining + sid := t.maxStreamID + retErr := g.closeConn if len(t.activeStreams) == 0 { - g.closeConn = true + retErr = errors.New("second GOAWAY written and no active streams left to process") } t.mu.Unlock() + t.maxStreamMu.Unlock() if err := t.framer.fr.WriteGoAway(sid, g.code, g.debugData); err != nil { return false, err } - if g.closeConn { - // Abruptly close the connection following the GoAway (via - // loopywriter). But flush out what's inside the buffer first. - t.framer.writer.Flush() - return false, fmt.Errorf("transport: Connection closing") + if retErr != nil { + return false, retErr } return true, nil } t.mu.Unlock() + t.maxStreamMu.Unlock() // For a graceful close, send out a GoAway with stream ID of MaxUInt32, // Follow that with a ping and wait for the ack to come back or a timer // to expire. During this time accept new streams since they might have // originated before the GoAway reaches the client. // After getting the ack or timer expiration send out another GoAway this // time with an ID of the max stream server intends to process. - if err := t.framer.fr.WriteGoAway(math.MaxUint32, http2.ErrCodeNo, []byte{}); err != nil { + if err := t.framer.fr.WriteGoAway(math.MaxUint32, http2.ErrCodeNo, g.debugData); err != nil { return false, err } if err := t.framer.fr.WritePing(false, goAwayPing.data); err != nil { @@ -1212,7 +1377,7 @@ func (t *http2Server) outgoingGoAwayHandler(g *goAway) (bool, error) { timer := time.NewTimer(time.Minute) defer timer.Stop() select { - case <-t.drainChan: + case <-t.drainEvent.Done(): case <-timer.C: case <-t.done: return @@ -1271,6 +1436,13 @@ func (t *http2Server) getOutFlowWindow() int64 { } } +func (t *http2Server) getPeer() *peer.Peer { + return &peer.Peer{ + Addr: t.remoteAddr, + AuthInfo: t.authInfo, // Can be nil + } +} + func getJitter(v time.Duration) time.Duration { if v == infinity { return 0 @@ -1280,3 +1452,18 @@ func getJitter(v time.Duration) time.Duration { j := grpcrand.Int63n(2*r) - r return time.Duration(j) } + +type connectionKey struct{} + +// GetConnection gets the connection from the context. +func GetConnection(ctx context.Context) net.Conn { + conn, _ := ctx.Value(connectionKey{}).(net.Conn) + return conn +} + +// SetConnection adds the connection to the context to be able to get +// information about the destination ip and port for an incoming RPC. This also +// allows any unary or streaming interceptors to see the connection. +func setConnection(ctx context.Context, conn net.Conn) context.Context { + return context.WithValue(ctx, connectionKey{}, conn) +} diff --git a/vendor/google.golang.org/grpc/internal/transport/http_util.go b/vendor/google.golang.org/grpc/internal/transport/http_util.go index c7dee140..19cbb18f 100644 --- a/vendor/google.golang.org/grpc/internal/transport/http_util.go +++ b/vendor/google.golang.org/grpc/internal/transport/http_util.go @@ -20,8 +20,8 @@ package transport import ( "bufio" - "bytes" "encoding/base64" + "errors" "fmt" "io" "math" @@ -38,22 +38,14 @@ import ( "golang.org/x/net/http2/hpack" spb "google.golang.org/genproto/googleapis/rpc/status" "google.golang.org/grpc/codes" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/internal/grpcutil" "google.golang.org/grpc/status" ) const ( // http2MaxFrameLen specifies the max length of a HTTP2 frame. http2MaxFrameLen = 16384 // 16KB frame - // http://http2.github.io/http2-spec/#SettingValues + // https://httpwg.org/specs/rfc7540.html#SettingValues http2InitHeaderTableSize = 4096 - // baseContentType is the base content-type for gRPC. This is a valid - // content-type on it's own, but can also include a content-subtype such as - // "proto" as a suffix after "+" or ";". See - // https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests - // for more details. - ) var ( @@ -93,56 +85,8 @@ var ( // 504 Gateway timeout - UNAVAILABLE. http.StatusGatewayTimeout: codes.Unavailable, } - logger = grpclog.Component("transport") ) -type parsedHeaderData struct { - encoding string - // statusGen caches the stream status received from the trailer the server - // sent. Client side only. Do not access directly. After all trailers are - // parsed, use the status method to retrieve the status. - statusGen *status.Status - // rawStatusCode and rawStatusMsg are set from the raw trailer fields and are not - // intended for direct access outside of parsing. - rawStatusCode *int - rawStatusMsg string - httpStatus *int - // Server side only fields. - timeoutSet bool - timeout time.Duration - method string - httpMethod string - // key-value metadata map from the peer. - mdata map[string][]string - statsTags []byte - statsTrace []byte - contentSubtype string - - // isGRPC field indicates whether the peer is speaking gRPC (otherwise HTTP). - // - // We are in gRPC mode (peer speaking gRPC) if: - // * We are client side and have already received a HEADER frame that indicates gRPC peer. - // * The header contains valid a content-type, i.e. a string starts with "application/grpc" - // And we should handle error specific to gRPC. - // - // Otherwise (i.e. a content-type string starts without "application/grpc", or does not exist), we - // are in HTTP fallback mode, and should handle error specific to HTTP. - isGRPC bool - grpcErr error - httpErr error - contentTypeErr string -} - -// decodeState configures decoding criteria and records the decoded data. -type decodeState struct { - // whether decoding on server side or not - serverSide bool - - // Records the states during HPACK decoding. It will be filled with info parsed from HTTP HEADERS - // frame once decodeHeader function has been invoked and returned. - data parsedHeaderData -} - // isReservedHeader checks whether hdr belongs to HTTP2 headers // reserved by gRPC protocol. Any other headers are classified as the // user-specified metadata. @@ -180,14 +124,6 @@ func isWhitelistedHeader(hdr string) bool { } } -func (d *decodeState) status() *status.Status { - if d.data.statusGen == nil { - // No status-details were provided; generate status using code/msg. - d.data.statusGen = status.New(codes.Code(int32(*(d.data.rawStatusCode))), d.data.rawStatusMsg) - } - return d.data.statusGen -} - const binHdrSuffix = "-bin" func encodeBinHeader(v []byte) string { @@ -217,168 +153,16 @@ func decodeMetadataHeader(k, v string) (string, error) { return v, nil } -func (d *decodeState) decodeHeader(frame *http2.MetaHeadersFrame) (http2.ErrCode, error) { - // frame.Truncated is set to true when framer detects that the current header - // list size hits MaxHeaderListSize limit. - if frame.Truncated { - return http2.ErrCodeFrameSize, status.Error(codes.Internal, "peer header list size exceeded limit") - } - - for _, hf := range frame.Fields { - d.processHeaderField(hf) - } - - if d.data.isGRPC { - if d.data.grpcErr != nil { - return http2.ErrCodeProtocol, d.data.grpcErr - } - if d.serverSide { - return http2.ErrCodeNo, nil - } - if d.data.rawStatusCode == nil && d.data.statusGen == nil { - // gRPC status doesn't exist. - // Set rawStatusCode to be unknown and return nil error. - // So that, if the stream has ended this Unknown status - // will be propagated to the user. - // Otherwise, it will be ignored. In which case, status from - // a later trailer, that has StreamEnded flag set, is propagated. - code := int(codes.Unknown) - d.data.rawStatusCode = &code - } - return http2.ErrCodeNo, nil - } - - // HTTP fallback mode - if d.data.httpErr != nil { - return http2.ErrCodeProtocol, d.data.httpErr - } - - var ( - code = codes.Internal // when header does not include HTTP status, return INTERNAL - ok bool - ) - - if d.data.httpStatus != nil { - code, ok = HTTPStatusConvTab[*(d.data.httpStatus)] - if !ok { - code = codes.Unknown - } - } - - return http2.ErrCodeProtocol, status.Error(code, d.constructHTTPErrMsg()) -} - -// constructErrMsg constructs error message to be returned in HTTP fallback mode. -// Format: HTTP status code and its corresponding message + content-type error message. -func (d *decodeState) constructHTTPErrMsg() string { - var errMsgs []string - - if d.data.httpStatus == nil { - errMsgs = append(errMsgs, "malformed header: missing HTTP status") - } else { - errMsgs = append(errMsgs, fmt.Sprintf("%s: HTTP status code %d", http.StatusText(*(d.data.httpStatus)), *d.data.httpStatus)) - } - - if d.data.contentTypeErr == "" { - errMsgs = append(errMsgs, "transport: missing content-type field") - } else { - errMsgs = append(errMsgs, d.data.contentTypeErr) - } - - return strings.Join(errMsgs, "; ") -} - -func (d *decodeState) addMetadata(k, v string) { - if d.data.mdata == nil { - d.data.mdata = make(map[string][]string) +func decodeGRPCStatusDetails(rawDetails string) (*status.Status, error) { + v, err := decodeBinHeader(rawDetails) + if err != nil { + return nil, err } - d.data.mdata[k] = append(d.data.mdata[k], v) -} - -func (d *decodeState) processHeaderField(f hpack.HeaderField) { - switch f.Name { - case "content-type": - contentSubtype, validContentType := grpcutil.ContentSubtype(f.Value) - if !validContentType { - d.data.contentTypeErr = fmt.Sprintf("transport: received the unexpected content-type %q", f.Value) - return - } - d.data.contentSubtype = contentSubtype - // TODO: do we want to propagate the whole content-type in the metadata, - // or come up with a way to just propagate the content-subtype if it was set? - // ie {"content-type": "application/grpc+proto"} or {"content-subtype": "proto"} - // in the metadata? - d.addMetadata(f.Name, f.Value) - d.data.isGRPC = true - case "grpc-encoding": - d.data.encoding = f.Value - case "grpc-status": - code, err := strconv.Atoi(f.Value) - if err != nil { - d.data.grpcErr = status.Errorf(codes.Internal, "transport: malformed grpc-status: %v", err) - return - } - d.data.rawStatusCode = &code - case "grpc-message": - d.data.rawStatusMsg = decodeGrpcMessage(f.Value) - case "grpc-status-details-bin": - v, err := decodeBinHeader(f.Value) - if err != nil { - d.data.grpcErr = status.Errorf(codes.Internal, "transport: malformed grpc-status-details-bin: %v", err) - return - } - s := &spb.Status{} - if err := proto.Unmarshal(v, s); err != nil { - d.data.grpcErr = status.Errorf(codes.Internal, "transport: malformed grpc-status-details-bin: %v", err) - return - } - d.data.statusGen = status.FromProto(s) - case "grpc-timeout": - d.data.timeoutSet = true - var err error - if d.data.timeout, err = decodeTimeout(f.Value); err != nil { - d.data.grpcErr = status.Errorf(codes.Internal, "transport: malformed time-out: %v", err) - } - case ":path": - d.data.method = f.Value - case ":status": - code, err := strconv.Atoi(f.Value) - if err != nil { - d.data.httpErr = status.Errorf(codes.Internal, "transport: malformed http-status: %v", err) - return - } - d.data.httpStatus = &code - case "grpc-tags-bin": - v, err := decodeBinHeader(f.Value) - if err != nil { - d.data.grpcErr = status.Errorf(codes.Internal, "transport: malformed grpc-tags-bin: %v", err) - return - } - d.data.statsTags = v - d.addMetadata(f.Name, string(v)) - case "grpc-trace-bin": - v, err := decodeBinHeader(f.Value) - if err != nil { - d.data.grpcErr = status.Errorf(codes.Internal, "transport: malformed grpc-trace-bin: %v", err) - return - } - d.data.statsTrace = v - d.addMetadata(f.Name, string(v)) - case ":method": - d.data.httpMethod = f.Value - default: - if isReservedHeader(f.Name) && !isWhitelistedHeader(f.Name) { - break - } - v, err := decodeMetadataHeader(f.Name, f.Value) - if err != nil { - if logger.V(logLevel) { - logger.Errorf("Failed to decode metadata header (%q, %q): %v", f.Name, f.Value, err) - } - return - } - d.addMetadata(f.Name, v) + st := &spb.Status{} + if err = proto.Unmarshal(v, st); err != nil { + return nil, err } + return status.FromProto(st), nil } type timeoutUnit uint8 @@ -465,13 +249,13 @@ func encodeGrpcMessage(msg string) string { } func encodeGrpcMessageUnchecked(msg string) string { - var buf bytes.Buffer + var sb strings.Builder for len(msg) > 0 { r, size := utf8.DecodeRuneInString(msg) for _, b := range []byte(string(r)) { if size > 1 { // If size > 1, r is not ascii. Always do percent encoding. - buf.WriteString(fmt.Sprintf("%%%02X", b)) + fmt.Fprintf(&sb, "%%%02X", b) continue } @@ -480,14 +264,14 @@ func encodeGrpcMessageUnchecked(msg string) string { // // fmt.Sprintf("%%%02X", utf8.RuneError) gives "%FFFD". if b >= spaceByte && b <= tildeByte && b != percentByte { - buf.WriteByte(b) + sb.WriteByte(b) } else { - buf.WriteString(fmt.Sprintf("%%%02X", b)) + fmt.Fprintf(&sb, "%%%02X", b) } } msg = msg[size:] } - return buf.String() + return sb.String() } // decodeGrpcMessage decodes the msg encoded by encodeGrpcMessage. @@ -505,23 +289,23 @@ func decodeGrpcMessage(msg string) string { } func decodeGrpcMessageUnchecked(msg string) string { - var buf bytes.Buffer + var sb strings.Builder lenMsg := len(msg) for i := 0; i < lenMsg; i++ { c := msg[i] if c == percentByte && i+2 < lenMsg { parsed, err := strconv.ParseUint(msg[i+1:i+3], 16, 8) if err != nil { - buf.WriteByte(c) + sb.WriteByte(c) } else { - buf.WriteByte(byte(parsed)) + sb.WriteByte(byte(parsed)) i += 2 } } else { - buf.WriteByte(c) + sb.WriteByte(c) } } - return buf.String() + return sb.String() } type bufWriter struct { @@ -530,8 +314,6 @@ type bufWriter struct { batchSize int conn net.Conn err error - - onFlush func() } func newBufWriter(conn net.Conn, batchSize int) *bufWriter { @@ -547,7 +329,8 @@ func (w *bufWriter) Write(b []byte) (n int, err error) { return 0, w.err } if w.batchSize == 0 { // Buffer has been disabled. - return w.conn.Write(b) + n, err = w.conn.Write(b) + return n, toIOError(err) } for len(b) > 0 { nn := copy(w.buf[w.offset:], b) @@ -568,14 +351,31 @@ func (w *bufWriter) Flush() error { if w.offset == 0 { return nil } - if w.onFlush != nil { - w.onFlush() - } _, w.err = w.conn.Write(w.buf[:w.offset]) + w.err = toIOError(w.err) w.offset = 0 return w.err } +type ioError struct { + error +} + +func (i ioError) Unwrap() error { + return i.error +} + +func isIOError(err error) bool { + return errors.As(err, &ioError{}) +} + +func toIOError(err error) error { + if err == nil { + return nil + } + return ioError{error: err} +} + type framer struct { writer *bufWriter fr *http2.Framer diff --git a/vendor/google.golang.org/grpc/internal/transport/logging.go b/vendor/google.golang.org/grpc/internal/transport/logging.go new file mode 100644 index 00000000..42ed2b07 --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/transport/logging.go @@ -0,0 +1,40 @@ +/* + * + * Copyright 2023 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package transport + +import ( + "fmt" + + "google.golang.org/grpc/grpclog" + internalgrpclog "google.golang.org/grpc/internal/grpclog" +) + +var logger = grpclog.Component("transport") + +func prefixLoggerForServerTransport(p *http2Server) *internalgrpclog.PrefixLogger { + return internalgrpclog.NewPrefixLogger(logger, fmt.Sprintf("[server-transport %p] ", p)) +} + +func prefixLoggerForServerHandlerTransport(p *serverHandlerTransport) *internalgrpclog.PrefixLogger { + return internalgrpclog.NewPrefixLogger(logger, fmt.Sprintf("[server-handler-transport %p] ", p)) +} + +func prefixLoggerForClientTransport(p *http2Client) *internalgrpclog.PrefixLogger { + return internalgrpclog.NewPrefixLogger(logger, fmt.Sprintf("[client-transport %p] ", p)) +} diff --git a/vendor/google.golang.org/grpc/internal/transport/networktype/networktype.go b/vendor/google.golang.org/grpc/internal/transport/networktype/networktype.go index 96967428..c11b5278 100644 --- a/vendor/google.golang.org/grpc/internal/transport/networktype/networktype.go +++ b/vendor/google.golang.org/grpc/internal/transport/networktype/networktype.go @@ -17,7 +17,7 @@ */ // Package networktype declares the network type to be used in the default -// dailer. Attribute of a resolver.Address. +// dialer. Attribute of a resolver.Address. package networktype import ( @@ -31,7 +31,7 @@ const key = keyType("grpc.internal.transport.networktype") // Set returns a copy of the provided address with attributes containing networkType. func Set(address resolver.Address, networkType string) resolver.Address { - address.Attributes = address.Attributes.WithValues(key, networkType) + address.Attributes = address.Attributes.WithValue(key, networkType) return address } diff --git a/vendor/google.golang.org/grpc/internal/transport/proxy.go b/vendor/google.golang.org/grpc/internal/transport/proxy.go index a662bf39..41596198 100644 --- a/vendor/google.golang.org/grpc/internal/transport/proxy.go +++ b/vendor/google.golang.org/grpc/internal/transport/proxy.go @@ -37,7 +37,7 @@ var ( httpProxyFromEnvironment = http.ProxyFromEnvironment ) -func mapAddress(ctx context.Context, address string) (*url.URL, error) { +func mapAddress(address string) (*url.URL, error) { req := &http.Request{ URL: &url.URL{ Scheme: "https", @@ -114,7 +114,7 @@ func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, backendAddr stri // connection. func proxyDial(ctx context.Context, addr string, grpcUA string) (conn net.Conn, err error) { newAddr := addr - proxyURL, err := mapAddress(ctx, addr) + proxyURL, err := mapAddress(addr) if err != nil { return nil, err } diff --git a/vendor/google.golang.org/grpc/internal/transport/transport.go b/vendor/google.golang.org/grpc/internal/transport/transport.go index 6cc1031f..aa1c8965 100644 --- a/vendor/google.golang.org/grpc/internal/transport/transport.go +++ b/vendor/google.golang.org/grpc/internal/transport/transport.go @@ -30,9 +30,11 @@ import ( "net" "sync" "sync/atomic" + "time" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" + "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" "google.golang.org/grpc/resolver" @@ -41,6 +43,10 @@ import ( "google.golang.org/grpc/tap" ) +// ErrNoHeaders is used as a signal that a trailers only response was received, +// and is not a real error. +var ErrNoHeaders = errors.New("stream has no headers") + const logLevel = 2 type bufferPool struct { @@ -251,6 +257,9 @@ type Stream struct { fc *inFlow wq *writeQuota + // Holds compressor names passed in grpc-accept-encoding metadata from the + // client. This is empty for the client side stream. + clientAdvertisedCompressors string // Callback to state application's intentions to read data. This // is used to adjust flow control, if needed. requestRead func(int) @@ -339,8 +348,24 @@ func (s *Stream) RecvCompress() string { } // SetSendCompress sets the compression algorithm to the stream. -func (s *Stream) SetSendCompress(str string) { - s.sendCompress = str +func (s *Stream) SetSendCompress(name string) error { + if s.isHeaderSent() || s.getState() == streamDone { + return errors.New("transport: set send compressor called after headers sent or stream done") + } + + s.sendCompress = name + return nil +} + +// SendCompress returns the send compressor name. +func (s *Stream) SendCompress() string { + return s.sendCompress +} + +// ClientAdvertisedCompressors returns the compressor names advertised by the +// client via grpc-accept-encoding header. +func (s *Stream) ClientAdvertisedCompressors() string { + return s.clientAdvertisedCompressors } // Done returns a channel which is closed when it receives the final status @@ -364,9 +389,15 @@ func (s *Stream) Header() (metadata.MD, error) { return s.header.Copy(), nil } s.waitOnHeader() + if !s.headerValid { return nil, s.status.Err() } + + if s.noHeaders { + return nil, ErrNoHeaders + } + return s.header.Copy(), nil } @@ -518,26 +549,21 @@ const ( // ServerConfig consists of all the configurations to establish a server transport. type ServerConfig struct { MaxStreams uint32 - AuthInfo credentials.AuthInfo + ConnectionTimeout time.Duration + Credentials credentials.TransportCredentials InTapHandle tap.ServerInHandle - StatsHandler stats.Handler + StatsHandlers []stats.Handler KeepaliveParams keepalive.ServerParameters KeepalivePolicy keepalive.EnforcementPolicy InitialWindowSize int32 InitialConnWindowSize int32 WriteBufferSize int ReadBufferSize int - ChannelzParentID int64 + ChannelzParentID *channelz.Identifier MaxHeaderListSize *uint32 HeaderTableSize *uint32 } -// NewServerTransport creates a ServerTransport with conn or non-nil error -// if it fails. -func NewServerTransport(protocol string, conn net.Conn, config *ServerConfig) (ServerTransport, error) { - return newHTTP2Server(conn, config) -} - // ConnectOptions covers all relevant options for communicating with the server. type ConnectOptions struct { // UserAgent is the application user agent. @@ -556,8 +582,8 @@ type ConnectOptions struct { CredsBundle credentials.Bundle // KeepaliveParams stores the keepalive parameters. KeepaliveParams keepalive.ClientParameters - // StatsHandler stores the handler for stats. - StatsHandler stats.Handler + // StatsHandlers stores the handler for stats. + StatsHandlers []stats.Handler // InitialWindowSize sets the initial window size for a stream. InitialWindowSize int32 // InitialConnWindowSize sets the initial window size for a connection. @@ -567,7 +593,7 @@ type ConnectOptions struct { // ReadBufferSize sets the size of read buffer, which in turn determines how much data can be read at most for one read syscall. ReadBufferSize int // ChannelzParentID sets the addrConn id which initiate the creation of this client transport. - ChannelzParentID int64 + ChannelzParentID *channelz.Identifier // MaxHeaderListSize sets the max (uncompressed) size of header list that is prepared to be received. MaxHeaderListSize *uint32 // UseProxy specifies if a proxy should be used. @@ -576,8 +602,8 @@ type ConnectOptions struct { // NewClientTransport establishes the transport with the required ConnectOptions // and returns it to the caller. -func NewClientTransport(connectCtx, ctx context.Context, addr resolver.Address, opts ConnectOptions, onPrefaceReceipt func(), onGoAway func(GoAwayReason), onClose func()) (ClientTransport, error) { - return newHTTP2Client(connectCtx, ctx, addr, opts, onPrefaceReceipt, onGoAway, onClose) +func NewClientTransport(connectCtx, ctx context.Context, addr resolver.Address, opts ConnectOptions, onClose func(GoAwayReason)) (ClientTransport, error) { + return newHTTP2Client(connectCtx, ctx, addr, opts, onClose) } // Options provides additional hints and information for message @@ -694,13 +720,13 @@ type ServerTransport interface { // Close tears down the transport. Once it is called, the transport // should not be accessed any more. All the pending streams and their // handlers will be terminated asynchronously. - Close() error + Close(err error) // RemoteAddr returns the remote network address. RemoteAddr() net.Addr // Drain notifies the client this ServerTransport stops accepting new RPCs. - Drain() + Drain(debugData string) // IncrMsgSent increments the number of message sent through this transport. IncrMsgSent() @@ -745,6 +771,12 @@ func (e ConnectionError) Origin() error { return e.err } +// Unwrap returns the original error of this connection error or nil when the +// origin is nil. +func (e ConnectionError) Unwrap() error { + return e.err +} + var ( // ErrConnClosing indicates that the transport is closing. ErrConnClosing = connectionErrorf(true, nil, "transport is closing") diff --git a/vendor/google.golang.org/grpc/internal/xds_handshake_cluster.go b/vendor/google.golang.org/grpc/internal/xds_handshake_cluster.go index 3677c3f0..e8b49277 100644 --- a/vendor/google.golang.org/grpc/internal/xds_handshake_cluster.go +++ b/vendor/google.golang.org/grpc/internal/xds_handshake_cluster.go @@ -28,7 +28,7 @@ type handshakeClusterNameKey struct{} // SetXDSHandshakeClusterName returns a copy of addr in which the Attributes field // is updated with the cluster name. func SetXDSHandshakeClusterName(addr resolver.Address, clusterName string) resolver.Address { - addr.Attributes = addr.Attributes.WithValues(handshakeClusterNameKey{}, clusterName) + addr.Attributes = addr.Attributes.WithValue(handshakeClusterNameKey{}, clusterName) return addr } diff --git a/vendor/google.golang.org/grpc/metadata/metadata.go b/vendor/google.golang.org/grpc/metadata/metadata.go index e4cbea91..a2cdcaf1 100644 --- a/vendor/google.golang.org/grpc/metadata/metadata.go +++ b/vendor/google.golang.org/grpc/metadata/metadata.go @@ -41,16 +41,17 @@ type MD map[string][]string // New creates an MD from a given key-value map. // // Only the following ASCII characters are allowed in keys: -// - digits: 0-9 -// - uppercase letters: A-Z (normalized to lower) -// - lowercase letters: a-z -// - special characters: -_. +// - digits: 0-9 +// - uppercase letters: A-Z (normalized to lower) +// - lowercase letters: a-z +// - special characters: -_. +// // Uppercase letters are automatically converted to lowercase. // // Keys beginning with "grpc-" are reserved for grpc-internal use only and may // result in errors if set in metadata. func New(m map[string]string) MD { - md := MD{} + md := make(MD, len(m)) for k, val := range m { key := strings.ToLower(k) md[key] = append(md[key], val) @@ -62,10 +63,11 @@ func New(m map[string]string) MD { // Pairs panics if len(kv) is odd. // // Only the following ASCII characters are allowed in keys: -// - digits: 0-9 -// - uppercase letters: A-Z (normalized to lower) -// - lowercase letters: a-z -// - special characters: -_. +// - digits: 0-9 +// - uppercase letters: A-Z (normalized to lower) +// - lowercase letters: a-z +// - special characters: -_. +// // Uppercase letters are automatically converted to lowercase. // // Keys beginning with "grpc-" are reserved for grpc-internal use only and may @@ -74,7 +76,7 @@ func Pairs(kv ...string) MD { if len(kv)%2 == 1 { panic(fmt.Sprintf("metadata: Pairs got the odd number of input pairs for metadata: %d", len(kv))) } - md := MD{} + md := make(MD, len(kv)/2) for i := 0; i < len(kv); i += 2 { key := strings.ToLower(kv[i]) md[key] = append(md[key], kv[i+1]) @@ -89,16 +91,24 @@ func (md MD) Len() int { // Copy returns a copy of md. func (md MD) Copy() MD { - return Join(md) + out := make(MD, len(md)) + for k, v := range md { + out[k] = copyOf(v) + } + return out } // Get obtains the values for a given key. +// +// k is converted to lowercase before searching in md. func (md MD) Get(k string) []string { k = strings.ToLower(k) return md[k] } // Set sets the value of a given key with a slice of values. +// +// k is converted to lowercase before storing in md. func (md MD) Set(k string, vals ...string) { if len(vals) == 0 { return @@ -107,7 +117,10 @@ func (md MD) Set(k string, vals ...string) { md[k] = vals } -// Append adds the values to key k, not overwriting what was already stored at that key. +// Append adds the values to key k, not overwriting what was already stored at +// that key. +// +// k is converted to lowercase before storing in md. func (md MD) Append(k string, vals ...string) { if len(vals) == 0 { return @@ -116,9 +129,17 @@ func (md MD) Append(k string, vals ...string) { md[k] = append(md[k], vals...) } +// Delete removes the values for a given key k which is converted to lowercase +// before removing it from md. +func (md MD) Delete(k string) { + k = strings.ToLower(k) + delete(md, k) +} + // Join joins any number of mds into a single MD. -// The order of values for each key is determined by the order in which -// the mds containing those values are presented to Join. +// +// The order of values for each key is determined by the order in which the mds +// containing those values are presented to Join. func Join(mds ...MD) MD { out := MD{} for _, md := range mds { @@ -145,8 +166,8 @@ func NewOutgoingContext(ctx context.Context, md MD) context.Context { } // AppendToOutgoingContext returns a new context with the provided kv merged -// with any existing metadata in the context. Please refer to the -// documentation of Pairs for a description of kv. +// with any existing metadata in the context. Please refer to the documentation +// of Pairs for a description of kv. func AppendToOutgoingContext(ctx context.Context, kv ...string) context.Context { if len(kv)%2 == 1 { panic(fmt.Sprintf("metadata: AppendToOutgoingContext got an odd number of input pairs for metadata: %d", len(kv))) @@ -154,25 +175,76 @@ func AppendToOutgoingContext(ctx context.Context, kv ...string) context.Context md, _ := ctx.Value(mdOutgoingKey{}).(rawMD) added := make([][]string, len(md.added)+1) copy(added, md.added) - added[len(added)-1] = make([]string, len(kv)) - copy(added[len(added)-1], kv) + kvCopy := make([]string, 0, len(kv)) + for i := 0; i < len(kv); i += 2 { + kvCopy = append(kvCopy, strings.ToLower(kv[i]), kv[i+1]) + } + added[len(added)-1] = kvCopy return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md.md, added: added}) } -// FromIncomingContext returns the incoming metadata in ctx if it exists. The -// returned MD should not be modified. Writing to it may cause races. -// Modification should be made to copies of the returned MD. -func FromIncomingContext(ctx context.Context) (md MD, ok bool) { - md, ok = ctx.Value(mdIncomingKey{}).(MD) - return +// FromIncomingContext returns the incoming metadata in ctx if it exists. +// +// All keys in the returned MD are lowercase. +func FromIncomingContext(ctx context.Context) (MD, bool) { + md, ok := ctx.Value(mdIncomingKey{}).(MD) + if !ok { + return nil, false + } + out := make(MD, len(md)) + for k, v := range md { + // We need to manually convert all keys to lower case, because MD is a + // map, and there's no guarantee that the MD attached to the context is + // created using our helper functions. + key := strings.ToLower(k) + out[key] = copyOf(v) + } + return out, true } -// FromOutgoingContextRaw returns the un-merged, intermediary contents -// of rawMD. Remember to perform strings.ToLower on the keys. The returned -// MD should not be modified. Writing to it may cause races. Modification -// should be made to copies of the returned MD. +// ValueFromIncomingContext returns the metadata value corresponding to the metadata +// key from the incoming metadata if it exists. Key must be lower-case. // -// This is intended for gRPC-internal use ONLY. +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +func ValueFromIncomingContext(ctx context.Context, key string) []string { + md, ok := ctx.Value(mdIncomingKey{}).(MD) + if !ok { + return nil + } + + if v, ok := md[key]; ok { + return copyOf(v) + } + for k, v := range md { + // We need to manually convert all keys to lower case, because MD is a + // map, and there's no guarantee that the MD attached to the context is + // created using our helper functions. + if strings.ToLower(k) == key { + return copyOf(v) + } + } + return nil +} + +// the returned slice must not be modified in place +func copyOf(v []string) []string { + vals := make([]string, len(v)) + copy(vals, v) + return vals +} + +// FromOutgoingContextRaw returns the un-merged, intermediary contents of rawMD. +// +// Remember to perform strings.ToLower on the keys, for both the returned MD (MD +// is a map, there's no guarantee it's created using our helper functions) and +// the extra kv pairs (AppendToOutgoingContext doesn't turn them into +// lowercase). +// +// This is intended for gRPC-internal use ONLY. Users should use +// FromOutgoingContext instead. func FromOutgoingContextRaw(ctx context.Context) (MD, [][]string, bool) { raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD) if !ok { @@ -182,16 +254,28 @@ func FromOutgoingContextRaw(ctx context.Context) (MD, [][]string, bool) { return raw.md, raw.added, true } -// FromOutgoingContext returns the outgoing metadata in ctx if it exists. The -// returned MD should not be modified. Writing to it may cause races. -// Modification should be made to copies of the returned MD. +// FromOutgoingContext returns the outgoing metadata in ctx if it exists. +// +// All keys in the returned MD are lowercase. func FromOutgoingContext(ctx context.Context) (MD, bool) { raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD) if !ok { return nil, false } - out := raw.md.Copy() + mdSize := len(raw.md) + for i := range raw.added { + mdSize += len(raw.added[i]) / 2 + } + + out := make(MD, mdSize) + for k, v := range raw.md { + // We need to manually convert all keys to lower case, because MD is a + // map, and there's no guarantee that the MD attached to the context is + // created using our helper functions. + key := strings.ToLower(k) + out[key] = copyOf(v) + } for _, added := range raw.added { if len(added)%2 == 1 { panic(fmt.Sprintf("metadata: FromOutgoingContext got an odd number of input pairs for metadata: %d", len(added))) diff --git a/vendor/google.golang.org/grpc/picker_wrapper.go b/vendor/google.golang.org/grpc/picker_wrapper.go index a58174b6..02f97595 100644 --- a/vendor/google.golang.org/grpc/picker_wrapper.go +++ b/vendor/google.golang.org/grpc/picker_wrapper.go @@ -26,6 +26,7 @@ import ( "google.golang.org/grpc/balancer" "google.golang.org/grpc/codes" "google.golang.org/grpc/internal/channelz" + istatus "google.golang.org/grpc/internal/status" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/status" ) @@ -35,6 +36,7 @@ import ( type pickerWrapper struct { mu sync.Mutex done bool + idle bool blockingCh chan struct{} picker balancer.Picker } @@ -46,7 +48,11 @@ func newPickerWrapper() *pickerWrapper { // updatePicker is called by UpdateBalancerState. It unblocks all blocked pick. func (pw *pickerWrapper) updatePicker(p balancer.Picker) { pw.mu.Lock() - if pw.done { + if pw.done || pw.idle { + // There is a small window where a picker update from the LB policy can + // race with the channel going to idle mode. If the picker is idle here, + // it is because the channel asked it to do so, and therefore it is sage + // to ignore the update from the LB policy. pw.mu.Unlock() return } @@ -57,12 +63,16 @@ func (pw *pickerWrapper) updatePicker(p balancer.Picker) { pw.mu.Unlock() } -func doneChannelzWrapper(acw *acBalancerWrapper, done func(balancer.DoneInfo)) func(balancer.DoneInfo) { - acw.mu.Lock() - ac := acw.ac - acw.mu.Unlock() +// doneChannelzWrapper performs the following: +// - increments the calls started channelz counter +// - wraps the done function in the passed in result to increment the calls +// failed or calls succeeded channelz counter before invoking the actual +// done function. +func doneChannelzWrapper(acbw *acBalancerWrapper, result *balancer.PickResult) { + ac := acbw.ac ac.incrCallsStarted() - return func(b balancer.DoneInfo) { + done := result.Done + result.Done = func(b balancer.DoneInfo) { if b.Err != nil && b.Err != io.EOF { ac.incrCallsFailed() } else { @@ -81,7 +91,7 @@ func doneChannelzWrapper(acw *acBalancerWrapper, done func(balancer.DoneInfo)) f // - the current picker returns other errors and failfast is false. // - the subConn returned by the current picker is not READY // When one of these situations happens, pick blocks until the picker gets updated. -func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.PickInfo) (transport.ClientTransport, func(balancer.DoneInfo), error) { +func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.PickInfo) (transport.ClientTransport, balancer.PickResult, error) { var ch chan struct{} var lastPickErr error @@ -89,7 +99,7 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer. pw.mu.Lock() if pw.done { pw.mu.Unlock() - return nil, nil, ErrClientConnClosing + return nil, balancer.PickResult{}, ErrClientConnClosing } if pw.picker == nil { @@ -110,9 +120,9 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer. } switch ctx.Err() { case context.DeadlineExceeded: - return nil, nil, status.Error(codes.DeadlineExceeded, errStr) + return nil, balancer.PickResult{}, status.Error(codes.DeadlineExceeded, errStr) case context.Canceled: - return nil, nil, status.Error(codes.Canceled, errStr) + return nil, balancer.PickResult{}, status.Error(codes.Canceled, errStr) } case <-ch: } @@ -124,14 +134,17 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer. pw.mu.Unlock() pickResult, err := p.Pick(info) - if err != nil { if err == balancer.ErrNoSubConnAvailable { continue } - if _, ok := status.FromError(err); ok { + if st, ok := status.FromError(err); ok { // Status error: end the RPC unconditionally with this status. - return nil, nil, err + // First restrict the code to the list allowed by gRFC A54. + if istatus.IsRestrictedControlPlaneCode(st) { + err = status.Errorf(codes.Internal, "received picker error with illegal status: %v", err) + } + return nil, balancer.PickResult{}, dropError{error: err} } // For all other errors, wait for ready RPCs should block and other // RPCs should fail with unavailable. @@ -139,19 +152,20 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer. lastPickErr = err continue } - return nil, nil, status.Error(codes.Unavailable, err.Error()) + return nil, balancer.PickResult{}, status.Error(codes.Unavailable, err.Error()) } - acw, ok := pickResult.SubConn.(*acBalancerWrapper) + acbw, ok := pickResult.SubConn.(*acBalancerWrapper) if !ok { - logger.Error("subconn returned from pick is not *acBalancerWrapper") + logger.Errorf("subconn returned from pick is type %T, not *acBalancerWrapper", pickResult.SubConn) continue } - if t, ok := acw.getAddrConn().getReadyTransport(); ok { + if t := acbw.ac.getReadyTransport(); t != nil { if channelz.IsOn() { - return t, doneChannelzWrapper(acw, pickResult.Done), nil + doneChannelzWrapper(acbw, &pickResult) + return t, pickResult, nil } - return t, pickResult.Done, nil + return t, pickResult, nil } if pickResult.Done != nil { // Calling done with nil error, no bytes sent and no bytes received. @@ -175,3 +189,28 @@ func (pw *pickerWrapper) close() { pw.done = true close(pw.blockingCh) } + +func (pw *pickerWrapper) enterIdleMode() { + pw.mu.Lock() + defer pw.mu.Unlock() + if pw.done { + return + } + pw.idle = true +} + +func (pw *pickerWrapper) exitIdleMode() { + pw.mu.Lock() + defer pw.mu.Unlock() + if pw.done { + return + } + pw.blockingCh = make(chan struct{}) + pw.idle = false +} + +// dropError is a wrapper error that indicates the LB policy wishes to drop the +// RPC and not retry it. +type dropError struct { + error +} diff --git a/vendor/google.golang.org/grpc/pickfirst.go b/vendor/google.golang.org/grpc/pickfirst.go index b858c2a5..abe266b0 100644 --- a/vendor/google.golang.org/grpc/pickfirst.go +++ b/vendor/google.golang.org/grpc/pickfirst.go @@ -19,11 +19,15 @@ package grpc import ( + "encoding/json" "errors" "fmt" "google.golang.org/grpc/balancer" "google.golang.org/grpc/connectivity" + "google.golang.org/grpc/internal/envconfig" + "google.golang.org/grpc/internal/grpcrand" + "google.golang.org/grpc/serviceconfig" ) // PickFirstBalancerName is the name of the pick_first balancer. @@ -43,94 +47,181 @@ func (*pickfirstBuilder) Name() string { return PickFirstBalancerName } +type pfConfig struct { + serviceconfig.LoadBalancingConfig `json:"-"` + + // If set to true, instructs the LB policy to shuffle the order of the list + // of addresses received from the name resolver before attempting to + // connect to them. + ShuffleAddressList bool `json:"shuffleAddressList"` +} + +func (*pickfirstBuilder) ParseConfig(js json.RawMessage) (serviceconfig.LoadBalancingConfig, error) { + cfg := &pfConfig{} + if err := json.Unmarshal(js, cfg); err != nil { + return nil, fmt.Errorf("pickfirst: unable to unmarshal LB policy config: %s, error: %v", string(js), err) + } + return cfg, nil +} + type pickfirstBalancer struct { - state connectivity.State - cc balancer.ClientConn - sc balancer.SubConn + state connectivity.State + cc balancer.ClientConn + subConn balancer.SubConn + cfg *pfConfig } func (b *pickfirstBalancer) ResolverError(err error) { - switch b.state { - case connectivity.TransientFailure, connectivity.Idle, connectivity.Connecting: - // Set a failing picker if we don't have a good picker. - b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure, - Picker: &picker{err: fmt.Errorf("name resolver error: %v", err)}, - }) - } if logger.V(2) { - logger.Infof("pickfirstBalancer: ResolverError called with error %v", err) + logger.Infof("pickfirstBalancer: ResolverError called with error: %v", err) + } + if b.subConn == nil { + b.state = connectivity.TransientFailure + } + + if b.state != connectivity.TransientFailure { + // The picker will not change since the balancer does not currently + // report an error. + return } + b.cc.UpdateState(balancer.State{ + ConnectivityState: connectivity.TransientFailure, + Picker: &picker{err: fmt.Errorf("name resolver error: %v", err)}, + }) } -func (b *pickfirstBalancer) UpdateClientConnState(cs balancer.ClientConnState) error { - if len(cs.ResolverState.Addresses) == 0 { +func (b *pickfirstBalancer) UpdateClientConnState(state balancer.ClientConnState) error { + addrs := state.ResolverState.Addresses + if len(addrs) == 0 { + // The resolver reported an empty address list. Treat it like an error by + // calling b.ResolverError. + if b.subConn != nil { + // Remove the old subConn. All addresses were removed, so it is no longer + // valid. + b.cc.RemoveSubConn(b.subConn) + b.subConn = nil + } b.ResolverError(errors.New("produced zero addresses")) return balancer.ErrBadResolverState } - if b.sc == nil { - var err error - b.sc, err = b.cc.NewSubConn(cs.ResolverState.Addresses, balancer.NewSubConnOptions{}) - if err != nil { - if logger.V(2) { - logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err) - } - b.state = connectivity.TransientFailure - b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure, - Picker: &picker{err: fmt.Errorf("error creating connection: %v", err)}, - }) - return balancer.ErrBadResolverState + + if state.BalancerConfig != nil { + cfg, ok := state.BalancerConfig.(*pfConfig) + if !ok { + return fmt.Errorf("pickfirstBalancer: received nil or illegal BalancerConfig (type %T): %v", state.BalancerConfig, state.BalancerConfig) } - b.state = connectivity.Idle - b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.Idle, Picker: &picker{result: balancer.PickResult{SubConn: b.sc}}}) - b.sc.Connect() - } else { - b.cc.UpdateAddresses(b.sc, cs.ResolverState.Addresses) - b.sc.Connect() + b.cfg = cfg + } + + if envconfig.PickFirstLBConfig && b.cfg != nil && b.cfg.ShuffleAddressList { + grpcrand.Shuffle(len(addrs), func(i, j int) { addrs[i], addrs[j] = addrs[j], addrs[i] }) + } + if b.subConn != nil { + b.cc.UpdateAddresses(b.subConn, addrs) + return nil } + + subConn, err := b.cc.NewSubConn(addrs, balancer.NewSubConnOptions{}) + if err != nil { + if logger.V(2) { + logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err) + } + b.state = connectivity.TransientFailure + b.cc.UpdateState(balancer.State{ + ConnectivityState: connectivity.TransientFailure, + Picker: &picker{err: fmt.Errorf("error creating connection: %v", err)}, + }) + return balancer.ErrBadResolverState + } + b.subConn = subConn + b.state = connectivity.Idle + b.cc.UpdateState(balancer.State{ + ConnectivityState: connectivity.Connecting, + Picker: &picker{err: balancer.ErrNoSubConnAvailable}, + }) + b.subConn.Connect() return nil } -func (b *pickfirstBalancer) UpdateSubConnState(sc balancer.SubConn, s balancer.SubConnState) { +func (b *pickfirstBalancer) UpdateSubConnState(subConn balancer.SubConn, state balancer.SubConnState) { if logger.V(2) { - logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", sc, s) + logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", subConn, state) } - if b.sc != sc { + if b.subConn != subConn { if logger.V(2) { - logger.Infof("pickfirstBalancer: ignored state change because sc is not recognized") + logger.Infof("pickfirstBalancer: ignored state change because subConn is not recognized") } return } - b.state = s.ConnectivityState - if s.ConnectivityState == connectivity.Shutdown { - b.sc = nil + if state.ConnectivityState == connectivity.Shutdown { + b.subConn = nil return } - switch s.ConnectivityState { - case connectivity.Ready, connectivity.Idle: - b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{result: balancer.PickResult{SubConn: sc}}}) + switch state.ConnectivityState { + case connectivity.Ready: + b.cc.UpdateState(balancer.State{ + ConnectivityState: state.ConnectivityState, + Picker: &picker{result: balancer.PickResult{SubConn: subConn}}, + }) case connectivity.Connecting: - b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{err: balancer.ErrNoSubConnAvailable}}) + if b.state == connectivity.TransientFailure { + // We stay in TransientFailure until we are Ready. See A62. + return + } + b.cc.UpdateState(balancer.State{ + ConnectivityState: state.ConnectivityState, + Picker: &picker{err: balancer.ErrNoSubConnAvailable}, + }) + case connectivity.Idle: + if b.state == connectivity.TransientFailure { + // We stay in TransientFailure until we are Ready. Also kick the + // subConn out of Idle into Connecting. See A62. + b.subConn.Connect() + return + } + b.cc.UpdateState(balancer.State{ + ConnectivityState: state.ConnectivityState, + Picker: &idlePicker{subConn: subConn}, + }) case connectivity.TransientFailure: b.cc.UpdateState(balancer.State{ - ConnectivityState: s.ConnectivityState, - Picker: &picker{err: s.ConnectionError}, + ConnectivityState: state.ConnectivityState, + Picker: &picker{err: state.ConnectionError}, }) } + b.state = state.ConnectivityState } func (b *pickfirstBalancer) Close() { } +func (b *pickfirstBalancer) ExitIdle() { + if b.subConn != nil && b.state == connectivity.Idle { + b.subConn.Connect() + } +} + type picker struct { result balancer.PickResult err error } -func (p *picker) Pick(info balancer.PickInfo) (balancer.PickResult, error) { +func (p *picker) Pick(balancer.PickInfo) (balancer.PickResult, error) { return p.result, p.err } +// idlePicker is used when the SubConn is IDLE and kicks the SubConn into +// CONNECTING when Pick is called. +type idlePicker struct { + subConn balancer.SubConn +} + +func (i *idlePicker) Pick(balancer.PickInfo) (balancer.PickResult, error) { + i.subConn.Connect() + return balancer.PickResult{}, balancer.ErrNoSubConnAvailable +} + func init() { balancer.Register(newPickfirstBuilder()) } diff --git a/vendor/google.golang.org/grpc/preloader.go b/vendor/google.golang.org/grpc/preloader.go index 0a1e975a..cd455478 100644 --- a/vendor/google.golang.org/grpc/preloader.go +++ b/vendor/google.golang.org/grpc/preloader.go @@ -25,7 +25,7 @@ import ( // PreparedMsg is responsible for creating a Marshalled and Compressed object. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. diff --git a/vendor/google.golang.org/grpc/regenerate.sh b/vendor/google.golang.org/grpc/regenerate.sh index dfd3226a..a6f26c8a 100644 --- a/vendor/google.golang.org/grpc/regenerate.sh +++ b/vendor/google.golang.org/grpc/regenerate.sh @@ -27,9 +27,9 @@ export PATH=${GOBIN}:${PATH} mkdir -p ${GOBIN} echo "remove existing generated files" -# grpc_testingv3/testv3.pb.go is not re-generated because it was -# intentionally generated by an older version of protoc-gen-go. -rm -f $(find . -name '*.pb.go' | grep -v 'grpc_testingv3/testv3.pb.go') +# grpc_testing_not_regenerate/*.pb.go is not re-generated, +# see grpc_testing_not_regenerate/README.md for details. +rm -f $(find . -name '*.pb.go' | grep -v 'grpc_testing_not_regenerate') echo "go install google.golang.org/protobuf/cmd/protoc-gen-go" (cd test/tools && go install google.golang.org/protobuf/cmd/protoc-gen-go) @@ -57,7 +57,8 @@ LEGACY_SOURCES=( ${WORKDIR}/grpc-proto/grpc/health/v1/health.proto ${WORKDIR}/grpc-proto/grpc/lb/v1/load_balancer.proto profiling/proto/service.proto - reflection/grpc_reflection_v1alpha/reflection.proto + ${WORKDIR}/grpc-proto/grpc/reflection/v1alpha/reflection.proto + ${WORKDIR}/grpc-proto/grpc/reflection/v1/reflection.proto ) # Generates only the new gRPC Service symbols @@ -68,7 +69,6 @@ SOURCES=( ${WORKDIR}/grpc-proto/grpc/gcp/transport_security_common.proto ${WORKDIR}/grpc-proto/grpc/lookup/v1/rls.proto ${WORKDIR}/grpc-proto/grpc/lookup/v1/rls_config.proto - ${WORKDIR}/grpc-proto/grpc/service_config/service_config.proto ${WORKDIR}/grpc-proto/grpc/testing/*.proto ${WORKDIR}/grpc-proto/grpc/core/*.proto ) @@ -76,7 +76,20 @@ SOURCES=( # These options of the form 'Mfoo.proto=bar' instruct the codegen to use an # import path of 'bar' in the generated code when 'foo.proto' is imported in # one of the sources. -OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core +# +# Note that the protos listed here are all for testing purposes. All protos to +# be used externally should have a go_package option (and they don't need to be +# listed here). +OPTS=Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core,\ +Mgrpc/testing/benchmark_service.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/stats.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/report_qps_scenario_service.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/messages.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/worker_service.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/control.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/test.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/payloads.proto=google.golang.org/grpc/interop/grpc_testing,\ +Mgrpc/testing/empty.proto=google.golang.org/grpc/interop/grpc_testing for src in ${SOURCES[@]}; do echo "protoc ${src}" @@ -85,7 +98,6 @@ for src in ${SOURCES[@]}; do -I${WORKDIR}/grpc-proto \ -I${WORKDIR}/googleapis \ -I${WORKDIR}/protobuf/src \ - -I${WORKDIR}/istio \ ${src} done @@ -96,24 +108,16 @@ for src in ${LEGACY_SOURCES[@]}; do -I${WORKDIR}/grpc-proto \ -I${WORKDIR}/googleapis \ -I${WORKDIR}/protobuf/src \ - -I${WORKDIR}/istio \ ${src} done # The go_package option in grpc/lookup/v1/rls.proto doesn't match the # current location. Move it into the right place. -mkdir -p ${WORKDIR}/out/google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1 -mv ${WORKDIR}/out/google.golang.org/grpc/lookup/grpc_lookup_v1/* ${WORKDIR}/out/google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1 - -# grpc_testingv3/testv3.pb.go is not re-generated because it was -# intentionally generated by an older version of protoc-gen-go. -rm ${WORKDIR}/out/google.golang.org/grpc/reflection/grpc_testingv3/*.pb.go - -# grpc/service_config/service_config.proto does not have a go_package option. -mv ${WORKDIR}/out/grpc/service_config/service_config.pb.go internal/proto/grpc_service_config +mkdir -p ${WORKDIR}/out/google.golang.org/grpc/internal/proto/grpc_lookup_v1 +mv ${WORKDIR}/out/google.golang.org/grpc/lookup/grpc_lookup_v1/* ${WORKDIR}/out/google.golang.org/grpc/internal/proto/grpc_lookup_v1 -# grpc/testing does not have a go_package option. -mv ${WORKDIR}/out/grpc/testing/*.pb.go interop/grpc_testing/ -mv ${WORKDIR}/out/grpc/core/*.pb.go interop/grpc_testing/core/ +# grpc_testing_not_regenerate/*.pb.go are not re-generated, +# see grpc_testing_not_regenerate/README.md for details. +rm ${WORKDIR}/out/google.golang.org/grpc/reflection/grpc_testing_not_regenerate/*.pb.go cp -R ${WORKDIR}/out/google.golang.org/grpc/* . diff --git a/vendor/google.golang.org/grpc/resolver/map.go b/vendor/google.golang.org/grpc/resolver/map.go new file mode 100644 index 00000000..efcb7f3e --- /dev/null +++ b/vendor/google.golang.org/grpc/resolver/map.go @@ -0,0 +1,138 @@ +/* + * + * Copyright 2021 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package resolver + +type addressMapEntry struct { + addr Address + value interface{} +} + +// AddressMap is a map of addresses to arbitrary values taking into account +// Attributes. BalancerAttributes are ignored, as are Metadata and Type. +// Multiple accesses may not be performed concurrently. Must be created via +// NewAddressMap; do not construct directly. +type AddressMap struct { + // The underlying map is keyed by an Address with fields that we don't care + // about being set to their zero values. The only fields that we care about + // are `Addr`, `ServerName` and `Attributes`. Since we need to be able to + // distinguish between addresses with same `Addr` and `ServerName`, but + // different `Attributes`, we cannot store the `Attributes` in the map key. + // + // The comparison operation for structs work as follows: + // Struct values are comparable if all their fields are comparable. Two + // struct values are equal if their corresponding non-blank fields are equal. + // + // The value type of the map contains a slice of addresses which match the key + // in their `Addr` and `ServerName` fields and contain the corresponding value + // associated with them. + m map[Address]addressMapEntryList +} + +func toMapKey(addr *Address) Address { + return Address{Addr: addr.Addr, ServerName: addr.ServerName} +} + +type addressMapEntryList []*addressMapEntry + +// NewAddressMap creates a new AddressMap. +func NewAddressMap() *AddressMap { + return &AddressMap{m: make(map[Address]addressMapEntryList)} +} + +// find returns the index of addr in the addressMapEntry slice, or -1 if not +// present. +func (l addressMapEntryList) find(addr Address) int { + for i, entry := range l { + // Attributes are the only thing to match on here, since `Addr` and + // `ServerName` are already equal. + if entry.addr.Attributes.Equal(addr.Attributes) { + return i + } + } + return -1 +} + +// Get returns the value for the address in the map, if present. +func (a *AddressMap) Get(addr Address) (value interface{}, ok bool) { + addrKey := toMapKey(&addr) + entryList := a.m[addrKey] + if entry := entryList.find(addr); entry != -1 { + return entryList[entry].value, true + } + return nil, false +} + +// Set updates or adds the value to the address in the map. +func (a *AddressMap) Set(addr Address, value interface{}) { + addrKey := toMapKey(&addr) + entryList := a.m[addrKey] + if entry := entryList.find(addr); entry != -1 { + entryList[entry].value = value + return + } + a.m[addrKey] = append(entryList, &addressMapEntry{addr: addr, value: value}) +} + +// Delete removes addr from the map. +func (a *AddressMap) Delete(addr Address) { + addrKey := toMapKey(&addr) + entryList := a.m[addrKey] + entry := entryList.find(addr) + if entry == -1 { + return + } + if len(entryList) == 1 { + entryList = nil + } else { + copy(entryList[entry:], entryList[entry+1:]) + entryList = entryList[:len(entryList)-1] + } + a.m[addrKey] = entryList +} + +// Len returns the number of entries in the map. +func (a *AddressMap) Len() int { + ret := 0 + for _, entryList := range a.m { + ret += len(entryList) + } + return ret +} + +// Keys returns a slice of all current map keys. +func (a *AddressMap) Keys() []Address { + ret := make([]Address, 0, a.Len()) + for _, entryList := range a.m { + for _, entry := range entryList { + ret = append(ret, entry.addr) + } + } + return ret +} + +// Values returns a slice of all current map values. +func (a *AddressMap) Values() []interface{} { + ret := make([]interface{}, 0, a.Len()) + for _, entryList := range a.m { + for _, entry := range entryList { + ret = append(ret, entry.value) + } + } + return ret +} diff --git a/vendor/google.golang.org/grpc/resolver/resolver.go b/vendor/google.golang.org/grpc/resolver/resolver.go index 6a9d234a..d8db6f5d 100644 --- a/vendor/google.golang.org/grpc/resolver/resolver.go +++ b/vendor/google.golang.org/grpc/resolver/resolver.go @@ -22,7 +22,10 @@ package resolver import ( "context" + "fmt" "net" + "net/url" + "strings" "google.golang.org/grpc/attributes" "google.golang.org/grpc/credentials" @@ -38,8 +41,9 @@ var ( // TODO(bar) install dns resolver in init(){}. -// Register registers the resolver builder to the resolver map. b.Scheme will be -// used as the scheme registered with this builder. +// Register registers the resolver builder to the resolver map. b.Scheme will +// be used as the scheme registered with this builder. The registry is case +// sensitive, and schemes should not contain any uppercase characters. // // NOTE: this function must only be called during initialization time (i.e. in // an init() function), and is not thread-safe. If multiple Resolvers are @@ -94,7 +98,7 @@ const ( // Address represents a server the client connects to. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -116,9 +120,14 @@ type Address struct { ServerName string // Attributes contains arbitrary data about this address intended for - // consumption by the load balancing policy. + // consumption by the SubConn. Attributes *attributes.Attributes + // BalancerAttributes contains arbitrary data about this address intended + // for consumption by the LB policy. These attributes do not affect SubConn + // creation, connection establishment, handshaking, etc. + BalancerAttributes *attributes.Attributes + // Type is the type of this address. // // Deprecated: use Attributes instead. @@ -131,6 +140,34 @@ type Address struct { Metadata interface{} } +// Equal returns whether a and o are identical. Metadata is compared directly, +// not with any recursive introspection. +// +// This method compares all fields of the address. When used to tell apart +// addresses during subchannel creation or connection establishment, it might be +// more appropriate for the caller to implement custom equality logic. +func (a Address) Equal(o Address) bool { + return a.Addr == o.Addr && a.ServerName == o.ServerName && + a.Attributes.Equal(o.Attributes) && + a.BalancerAttributes.Equal(o.BalancerAttributes) && + a.Type == o.Type && a.Metadata == o.Metadata +} + +// String returns JSON formatted string representation of the address. +func (a Address) String() string { + var sb strings.Builder + sb.WriteString(fmt.Sprintf("{Addr: %q, ", a.Addr)) + sb.WriteString(fmt.Sprintf("ServerName: %q, ", a.ServerName)) + if a.Attributes != nil { + sb.WriteString(fmt.Sprintf("Attributes: %v, ", a.Attributes.String())) + } + if a.BalancerAttributes != nil { + sb.WriteString(fmt.Sprintf("BalancerAttributes: %v", a.BalancerAttributes.String())) + } + sb.WriteString("}") + return sb.String() +} + // BuildOptions includes additional information for the builder to create // the resolver. type BuildOptions struct { @@ -181,6 +218,15 @@ type State struct { // gRPC to add new methods to this interface. type ClientConn interface { // UpdateState updates the state of the ClientConn appropriately. + // + // If an error is returned, the resolver should try to resolve the + // target again. The resolver should use a backoff timer to prevent + // overloading the server with requests. If a resolver is certain that + // reresolving will not change the result, e.g. because it is + // a watch-based resolver, returned errors can be ignored. + // + // If the resolved State is the same as the last reported one, calling + // UpdateState can be omitted. UpdateState(State) error // ReportError notifies the ClientConn that the Resolver encountered an // error. The ClientConn will notify the load balancer and begin calling @@ -204,25 +250,47 @@ type ClientConn interface { // Target represents a target for gRPC, as specified in: // https://github.com/grpc/grpc/blob/master/doc/naming.md. -// It is parsed from the target string that gets passed into Dial or DialContext by the user. And -// grpc passes it to the resolver and the balancer. +// It is parsed from the target string that gets passed into Dial or DialContext +// by the user. And gRPC passes it to the resolver and the balancer. // -// If the target follows the naming spec, and the parsed scheme is registered with grpc, we will -// parse the target string according to the spec. e.g. "dns://some_authority/foo.bar" will be parsed -// into &Target{Scheme: "dns", Authority: "some_authority", Endpoint: "foo.bar"} +// If the target follows the naming spec, and the parsed scheme is registered +// with gRPC, we will parse the target string according to the spec. If the +// target does not contain a scheme or if the parsed scheme is not registered +// (i.e. no corresponding resolver available to resolve the endpoint), we will +// apply the default scheme, and will attempt to reparse it. // -// If the target does not contain a scheme, we will apply the default scheme, and set the Target to -// be the full target string. e.g. "foo.bar" will be parsed into -// &Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "foo.bar"}. +// Examples: // -// If the parsed scheme is not registered (i.e. no corresponding resolver available to resolve the -// endpoint), we set the Scheme to be the default scheme, and set the Endpoint to be the full target -// string. e.g. target string "unknown_scheme://authority/endpoint" will be parsed into -// &Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "unknown_scheme://authority/endpoint"}. +// - "dns://some_authority/foo.bar" +// Target{Scheme: "dns", Authority: "some_authority", Endpoint: "foo.bar"} +// - "foo.bar" +// Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "foo.bar"} +// - "unknown_scheme://authority/endpoint" +// Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "unknown_scheme://authority/endpoint"} type Target struct { - Scheme string - Authority string - Endpoint string + // URL contains the parsed dial target with an optional default scheme added + // to it if the original dial target contained no scheme or contained an + // unregistered scheme. Any query params specified in the original dial + // target can be accessed from here. + URL url.URL +} + +// Endpoint retrieves endpoint without leading "/" from either `URL.Path` +// or `URL.Opaque`. The latter is used when the former is empty. +func (t Target) Endpoint() string { + endpoint := t.URL.Path + if endpoint == "" { + endpoint = t.URL.Opaque + } + // For targets of the form "[scheme]://[authority]/endpoint, the endpoint + // value returned from url.Parse() contains a leading "/". Although this is + // in accordance with RFC 3986, we do not want to break existing resolver + // implementations which expect the endpoint without the leading "/". So, we + // end up stripping the leading "/" here. But this will result in an + // incorrect parsing for something like "unix:///path/to/socket". Since we + // own the "unix" resolver, we can workaround in the unix resolver by using + // the `URL` field. + return strings.TrimPrefix(endpoint, "/") } // Builder creates a resolver that will be used to watch name resolution updates. @@ -232,8 +300,10 @@ type Builder interface { // gRPC dial calls Build synchronously, and fails if the returned error is // not nil. Build(target Target, cc ClientConn, opts BuildOptions) (Resolver, error) - // Scheme returns the scheme supported by this resolver. - // Scheme is defined at https://github.com/grpc/grpc/blob/master/doc/naming.md. + // Scheme returns the scheme supported by this resolver. Scheme is defined + // at https://github.com/grpc/grpc/blob/master/doc/naming.md. The returned + // string should not contain uppercase characters, as they will not match + // the parsed target's scheme as defined in RFC 3986. Scheme() string } diff --git a/vendor/google.golang.org/grpc/resolver_conn_wrapper.go b/vendor/google.golang.org/grpc/resolver_conn_wrapper.go index 4118de57..b408b368 100644 --- a/vendor/google.golang.org/grpc/resolver_conn_wrapper.go +++ b/vendor/google.golang.org/grpc/resolver_conn_wrapper.go @@ -19,139 +19,204 @@ package grpc import ( - "fmt" + "context" "strings" "sync" "google.golang.org/grpc/balancer" - "google.golang.org/grpc/credentials" "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/internal/grpcsync" + "google.golang.org/grpc/internal/pretty" "google.golang.org/grpc/resolver" "google.golang.org/grpc/serviceconfig" ) +// resolverStateUpdater wraps the single method used by ccResolverWrapper to +// report a state update from the actual resolver implementation. +type resolverStateUpdater interface { + updateResolverState(s resolver.State, err error) error +} + // ccResolverWrapper is a wrapper on top of cc for resolvers. // It implements resolver.ClientConn interface. type ccResolverWrapper struct { - cc *ClientConn - resolverMu sync.Mutex - resolver resolver.Resolver - done *grpcsync.Event - curState resolver.State + // The following fields are initialized when the wrapper is created and are + // read-only afterwards, and therefore can be accessed without a mutex. + cc resolverStateUpdater + channelzID *channelz.Identifier + ignoreServiceConfig bool + opts ccResolverWrapperOpts + serializer *grpcsync.CallbackSerializer // To serialize all incoming calls. + serializerCancel context.CancelFunc // To close the serializer, accessed only from close(). + + // All incoming (resolver --> gRPC) calls are guaranteed to execute in a + // mutually exclusive manner as they are scheduled on the serializer. + // Fields accessed *only* in these serializer callbacks, can therefore be + // accessed without a mutex. + curState resolver.State + + // mu guards access to the below fields. + mu sync.Mutex + closed bool + resolver resolver.Resolver // Accessed only from outgoing calls. +} + +// ccResolverWrapperOpts wraps the arguments to be passed when creating a new +// ccResolverWrapper. +type ccResolverWrapperOpts struct { + target resolver.Target // User specified dial target to resolve. + builder resolver.Builder // Resolver builder to use. + bOpts resolver.BuildOptions // Resolver build options to use. + channelzID *channelz.Identifier // Channelz identifier for the channel. } // newCCResolverWrapper uses the resolver.Builder to build a Resolver and // returns a ccResolverWrapper object which wraps the newly built resolver. -func newCCResolverWrapper(cc *ClientConn, rb resolver.Builder) (*ccResolverWrapper, error) { +func newCCResolverWrapper(cc resolverStateUpdater, opts ccResolverWrapperOpts) (*ccResolverWrapper, error) { + ctx, cancel := context.WithCancel(context.Background()) ccr := &ccResolverWrapper{ - cc: cc, - done: grpcsync.NewEvent(), + cc: cc, + channelzID: opts.channelzID, + ignoreServiceConfig: opts.bOpts.DisableServiceConfig, + opts: opts, + serializer: grpcsync.NewCallbackSerializer(ctx), + serializerCancel: cancel, } - var credsClone credentials.TransportCredentials - if creds := cc.dopts.copts.TransportCredentials; creds != nil { - credsClone = creds.Clone() - } - rbo := resolver.BuildOptions{ - DisableServiceConfig: cc.dopts.disableServiceConfig, - DialCreds: credsClone, - CredsBundle: cc.dopts.copts.CredsBundle, - Dialer: cc.dopts.copts.Dialer, - } - - var err error - // We need to hold the lock here while we assign to the ccr.resolver field - // to guard against a data race caused by the following code path, - // rb.Build-->ccr.ReportError-->ccr.poll-->ccr.resolveNow, would end up - // accessing ccr.resolver which is being assigned here. - ccr.resolverMu.Lock() - defer ccr.resolverMu.Unlock() - ccr.resolver, err = rb.Build(cc.parsedTarget, ccr, rbo) + // Cannot hold the lock at build time because the resolver can send an + // update or error inline and these incoming calls grab the lock to schedule + // a callback in the serializer. + r, err := opts.builder.Build(opts.target, ccr, opts.bOpts) if err != nil { + cancel() return nil, err } + + // Any error reported by the resolver at build time that leads to a + // re-resolution request from the balancer is dropped by grpc until we + // return from this function. So, we don't have to handle pending resolveNow + // requests here. + ccr.mu.Lock() + ccr.resolver = r + ccr.mu.Unlock() + return ccr, nil } func (ccr *ccResolverWrapper) resolveNow(o resolver.ResolveNowOptions) { - ccr.resolverMu.Lock() - if !ccr.done.HasFired() { - ccr.resolver.ResolveNow(o) + ccr.mu.Lock() + defer ccr.mu.Unlock() + + // ccr.resolver field is set only after the call to Build() returns. But in + // the process of building, the resolver may send an error update which when + // propagated to the balancer may result in a re-resolution request. + if ccr.closed || ccr.resolver == nil { + return } - ccr.resolverMu.Unlock() + ccr.resolver.ResolveNow(o) } func (ccr *ccResolverWrapper) close() { - ccr.resolverMu.Lock() - ccr.resolver.Close() - ccr.done.Fire() - ccr.resolverMu.Unlock() + ccr.mu.Lock() + if ccr.closed { + ccr.mu.Unlock() + return + } + + channelz.Info(logger, ccr.channelzID, "Closing the name resolver") + + // Close the serializer to ensure that no more calls from the resolver are + // handled, before actually closing the resolver. + ccr.serializerCancel() + ccr.closed = true + r := ccr.resolver + ccr.mu.Unlock() + + // Give enqueued callbacks a chance to finish. + <-ccr.serializer.Done + + // Spawn a goroutine to close the resolver (since it may block trying to + // cleanup all allocated resources) and return early. + go r.Close() +} + +// serializerScheduleLocked is a convenience method to schedule a function to be +// run on the serializer while holding ccr.mu. +func (ccr *ccResolverWrapper) serializerScheduleLocked(f func(context.Context)) { + ccr.mu.Lock() + ccr.serializer.Schedule(f) + ccr.mu.Unlock() } +// UpdateState is called by resolver implementations to report new state to gRPC +// which includes addresses and service config. func (ccr *ccResolverWrapper) UpdateState(s resolver.State) error { - if ccr.done.HasFired() { - return nil - } - channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: sending update to cc: %v", s) - if channelz.IsOn() { + errCh := make(chan error, 1) + ok := ccr.serializer.Schedule(func(context.Context) { ccr.addChannelzTraceEvent(s) + ccr.curState = s + if err := ccr.cc.updateResolverState(ccr.curState, nil); err == balancer.ErrBadResolverState { + errCh <- balancer.ErrBadResolverState + return + } + errCh <- nil + }) + if !ok { + // The only time when Schedule() fail to add the callback to the + // serializer is when the serializer is closed, and this happens only + // when the resolver wrapper is closed. + return nil } - ccr.curState = s - if err := ccr.cc.updateResolverState(ccr.curState, nil); err == balancer.ErrBadResolverState { - return balancer.ErrBadResolverState - } - return nil + return <-errCh } +// ReportError is called by resolver implementations to report errors +// encountered during name resolution to gRPC. func (ccr *ccResolverWrapper) ReportError(err error) { - if ccr.done.HasFired() { - return - } - channelz.Warningf(logger, ccr.cc.channelzID, "ccResolverWrapper: reporting error to cc: %v", err) - ccr.cc.updateResolverState(resolver.State{}, err) + ccr.serializerScheduleLocked(func(_ context.Context) { + channelz.Warningf(logger, ccr.channelzID, "ccResolverWrapper: reporting error to cc: %v", err) + ccr.cc.updateResolverState(resolver.State{}, err) + }) } -// NewAddress is called by the resolver implementation to send addresses to gRPC. +// NewAddress is called by the resolver implementation to send addresses to +// gRPC. func (ccr *ccResolverWrapper) NewAddress(addrs []resolver.Address) { - if ccr.done.HasFired() { - return - } - channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: sending new addresses to cc: %v", addrs) - if channelz.IsOn() { + ccr.serializerScheduleLocked(func(_ context.Context) { ccr.addChannelzTraceEvent(resolver.State{Addresses: addrs, ServiceConfig: ccr.curState.ServiceConfig}) - } - ccr.curState.Addresses = addrs - ccr.cc.updateResolverState(ccr.curState, nil) + ccr.curState.Addresses = addrs + ccr.cc.updateResolverState(ccr.curState, nil) + }) } // NewServiceConfig is called by the resolver implementation to send service // configs to gRPC. func (ccr *ccResolverWrapper) NewServiceConfig(sc string) { - if ccr.done.HasFired() { - return - } - channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: got new service config: %v", sc) - if ccr.cc.dopts.disableServiceConfig { - channelz.Info(logger, ccr.cc.channelzID, "Service config lookups disabled; ignoring config") - return - } - scpr := parseServiceConfig(sc) - if scpr.Err != nil { - channelz.Warningf(logger, ccr.cc.channelzID, "ccResolverWrapper: error parsing service config: %v", scpr.Err) - return - } - if channelz.IsOn() { + ccr.serializerScheduleLocked(func(_ context.Context) { + channelz.Infof(logger, ccr.channelzID, "ccResolverWrapper: got new service config: %s", sc) + if ccr.ignoreServiceConfig { + channelz.Info(logger, ccr.channelzID, "Service config lookups disabled; ignoring config") + return + } + scpr := parseServiceConfig(sc) + if scpr.Err != nil { + channelz.Warningf(logger, ccr.channelzID, "ccResolverWrapper: error parsing service config: %v", scpr.Err) + return + } ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: scpr}) - } - ccr.curState.ServiceConfig = scpr - ccr.cc.updateResolverState(ccr.curState, nil) + ccr.curState.ServiceConfig = scpr + ccr.cc.updateResolverState(ccr.curState, nil) + }) } +// ParseServiceConfig is called by resolver implementations to parse a JSON +// representation of the service config. func (ccr *ccResolverWrapper) ParseServiceConfig(scJSON string) *serviceconfig.ParseResult { return parseServiceConfig(scJSON) } +// addChannelzTraceEvent adds a channelz trace event containing the new +// state received from resolver implementations. func (ccr *ccResolverWrapper) addChannelzTraceEvent(s resolver.State) { var updates []string var oldSC, newSC *ServiceConfig @@ -170,8 +235,5 @@ func (ccr *ccResolverWrapper) addChannelzTraceEvent(s resolver.State) { } else if len(ccr.curState.Addresses) == 0 && len(s.Addresses) > 0 { updates = append(updates, "resolver returned new addresses") } - channelz.AddTraceEvent(logger, ccr.cc.channelzID, 0, &channelz.TraceEventDesc{ - Desc: fmt.Sprintf("Resolver state updated: %+v (%v)", s, strings.Join(updates, "; ")), - Severity: channelz.CtInfo, - }) + channelz.Infof(logger, ccr.channelzID, "Resolver state updated: %s (%v)", pretty.ToJSON(s), strings.Join(updates, "; ")) } diff --git a/vendor/google.golang.org/grpc/rpc_util.go b/vendor/google.golang.org/grpc/rpc_util.go index 6db356fa..a844d28f 100644 --- a/vendor/google.golang.org/grpc/rpc_util.go +++ b/vendor/google.golang.org/grpc/rpc_util.go @@ -25,7 +25,6 @@ import ( "encoding/binary" "fmt" "io" - "io/ioutil" "math" "strings" "sync" @@ -77,7 +76,7 @@ func NewGZIPCompressorWithLevel(level int) (Compressor, error) { return &gzipCompressor{ pool: sync.Pool{ New: func() interface{} { - w, err := gzip.NewWriterLevel(ioutil.Discard, level) + w, err := gzip.NewWriterLevel(io.Discard, level) if err != nil { panic(err) } @@ -143,7 +142,7 @@ func (d *gzipDecompressor) Do(r io.Reader) ([]byte, error) { z.Close() d.pool.Put(z) }() - return ioutil.ReadAll(z) + return io.ReadAll(z) } func (d *gzipDecompressor) Type() string { @@ -160,6 +159,7 @@ type callInfo struct { contentSubtype string codec baseCodec maxRetryRPCBufferSize int + onFinish []func(err error) } func defaultCallInfo() *callInfo { @@ -198,7 +198,7 @@ func Header(md *metadata.MD) CallOption { // HeaderCallOption is a CallOption for collecting response header metadata. // The metadata field will be populated *after* the RPC completes. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -220,7 +220,7 @@ func Trailer(md *metadata.MD) CallOption { // TrailerCallOption is a CallOption for collecting response trailer metadata. // The metadata field will be populated *after* the RPC completes. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -242,7 +242,7 @@ func Peer(p *peer.Peer) CallOption { // PeerCallOption is a CallOption for collecting the identity of the remote // peer. The peer field will be populated *after* the RPC completes. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -258,7 +258,8 @@ func (o PeerCallOption) after(c *callInfo, attempt *csAttempt) { } // WaitForReady configures the action to take when an RPC is attempted on broken -// connections or unreachable servers. If waitForReady is false, the RPC will fail +// connections or unreachable servers. If waitForReady is false and the +// connection is in the TRANSIENT_FAILURE state, the RPC will fail // immediately. Otherwise, the RPC client will block the call until a // connection is available (or the call is canceled or times out) and will // retry the call if it fails due to a transient error. gRPC will not retry if @@ -281,7 +282,7 @@ func FailFast(failFast bool) CallOption { // FailFastCallOption is a CallOption for indicating whether an RPC should fail // fast or not. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -295,8 +296,44 @@ func (o FailFastCallOption) before(c *callInfo) error { } func (o FailFastCallOption) after(c *callInfo, attempt *csAttempt) {} +// OnFinish returns a CallOption that configures a callback to be called when +// the call completes. The error passed to the callback is the status of the +// RPC, and may be nil. The onFinish callback provided will only be called once +// by gRPC. This is mainly used to be used by streaming interceptors, to be +// notified when the RPC completes along with information about the status of +// the RPC. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +func OnFinish(onFinish func(err error)) CallOption { + return OnFinishCallOption{ + OnFinish: onFinish, + } +} + +// OnFinishCallOption is CallOption that indicates a callback to be called when +// the call completes. +// +// # Experimental +// +// Notice: This type is EXPERIMENTAL and may be changed or removed in a +// later release. +type OnFinishCallOption struct { + OnFinish func(error) +} + +func (o OnFinishCallOption) before(c *callInfo) error { + c.onFinish = append(c.onFinish, o.OnFinish) + return nil +} + +func (o OnFinishCallOption) after(c *callInfo, attempt *csAttempt) {} + // MaxCallRecvMsgSize returns a CallOption which sets the maximum message size -// in bytes the client can receive. +// in bytes the client can receive. If this is not set, gRPC uses the default +// 4MB. func MaxCallRecvMsgSize(bytes int) CallOption { return MaxRecvMsgSizeCallOption{MaxRecvMsgSize: bytes} } @@ -304,7 +341,7 @@ func MaxCallRecvMsgSize(bytes int) CallOption { // MaxRecvMsgSizeCallOption is a CallOption that indicates the maximum message // size in bytes the client can receive. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -319,7 +356,8 @@ func (o MaxRecvMsgSizeCallOption) before(c *callInfo) error { func (o MaxRecvMsgSizeCallOption) after(c *callInfo, attempt *csAttempt) {} // MaxCallSendMsgSize returns a CallOption which sets the maximum message size -// in bytes the client can send. +// in bytes the client can send. If this is not set, gRPC uses the default +// `math.MaxInt32`. func MaxCallSendMsgSize(bytes int) CallOption { return MaxSendMsgSizeCallOption{MaxSendMsgSize: bytes} } @@ -327,7 +365,7 @@ func MaxCallSendMsgSize(bytes int) CallOption { // MaxSendMsgSizeCallOption is a CallOption that indicates the maximum message // size in bytes the client can send. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -350,7 +388,7 @@ func PerRPCCredentials(creds credentials.PerRPCCredentials) CallOption { // PerRPCCredsCallOption is a CallOption that indicates the per-RPC // credentials to use for the call. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -368,7 +406,7 @@ func (o PerRPCCredsCallOption) after(c *callInfo, attempt *csAttempt) {} // sending the request. If WithCompressor is also set, UseCompressor has // higher priority. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -378,7 +416,7 @@ func UseCompressor(name string) CallOption { // CompressorCallOption is a CallOption that indicates the compressor to use. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -415,7 +453,7 @@ func CallContentSubtype(contentSubtype string) CallOption { // ContentSubtypeCallOption is a CallOption that indicates the content-subtype // used for marshaling messages. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -443,7 +481,7 @@ func (o ContentSubtypeCallOption) after(c *callInfo, attempt *csAttempt) {} // This function is provided for advanced users; prefer to use only // CallContentSubtype to select a registered codec instead. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -454,7 +492,7 @@ func ForceCodec(codec encoding.Codec) CallOption { // ForceCodecCallOption is a CallOption that indicates the codec used for // marshaling messages. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -479,7 +517,7 @@ func CallCustomCodec(codec Codec) CallOption { // CustomCodecCallOption is a CallOption that indicates the codec used for // marshaling messages. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -496,7 +534,7 @@ func (o CustomCodecCallOption) after(c *callInfo, attempt *csAttempt) {} // MaxRetryRPCBufferSize returns a CallOption that limits the amount of memory // used for buffering this RPC's requests for retry purposes. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -507,7 +545,7 @@ func MaxRetryRPCBufferSize(bytes int) CallOption { // MaxRetryRPCBufferSizeCallOption is a CallOption indicating the amount of // memory to be used for caching this RPC for retry purposes. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -539,6 +577,9 @@ type parser struct { // The header of a gRPC message. Find more detail at // https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md header [5]byte + + // recvBufferPool is the pool of shared receive buffers. + recvBufferPool SharedBufferPool } // recvMsg reads a complete gRPC message from the stream. @@ -547,10 +588,11 @@ type parser struct { // format. The caller owns the returned msg memory. // // If there is an error, possible values are: -// * io.EOF, when no messages remain -// * io.ErrUnexpectedEOF -// * of type transport.ConnectionError -// * an error from the status package +// - io.EOF, when no messages remain +// - io.ErrUnexpectedEOF +// - of type transport.ConnectionError +// - an error from the status package +// // No other error values or types must be returned, which also means // that the underlying io.Reader must not return an incompatible // error. @@ -571,9 +613,7 @@ func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byt if int(length) > maxReceiveMessageSize { return 0, nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", length, maxReceiveMessageSize) } - // TODO(bradfitz,zhaoq): garbage. reuse buffer after proto decoding instead - // of making it for each message: - msg = make([]byte, int(length)) + msg = p.recvBufferPool.Get(int(length)) if _, err := p.r.Read(msg); err != nil { if err == io.EOF { err = io.ErrUnexpectedEOF @@ -655,12 +695,13 @@ func msgHeader(data, compData []byte) (hdr []byte, payload []byte) { func outPayload(client bool, msg interface{}, data, payload []byte, t time.Time) *stats.OutPayload { return &stats.OutPayload{ - Client: client, - Payload: msg, - Data: data, - Length: len(data), - WireLength: len(payload) + headerLen, - SentTime: t, + Client: client, + Payload: msg, + Data: data, + Length: len(data), + WireLength: len(payload) + headerLen, + CompressedLength: len(payload), + SentTime: t, } } @@ -681,17 +722,17 @@ func checkRecvPayload(pf payloadFormat, recvCompress string, haveCompressor bool } type payloadInfo struct { - wireLength int // The compressed length got from wire. + compressedLength int // The compressed length got from wire. uncompressedBytes []byte } func recvAndDecompress(p *parser, s *transport.Stream, dc Decompressor, maxReceiveMessageSize int, payInfo *payloadInfo, compressor encoding.Compressor) ([]byte, error) { - pf, d, err := p.recvMsg(maxReceiveMessageSize) + pf, buf, err := p.recvMsg(maxReceiveMessageSize) if err != nil { return nil, err } if payInfo != nil { - payInfo.wireLength = len(d) + payInfo.compressedLength = len(buf) } if st := checkRecvPayload(pf, s.RecvCompress(), compressor != nil || dc != nil); st != nil { @@ -703,23 +744,21 @@ func recvAndDecompress(p *parser, s *transport.Stream, dc Decompressor, maxRecei // To match legacy behavior, if the decompressor is set by WithDecompressor or RPCDecompressor, // use this decompressor as the default. if dc != nil { - d, err = dc.Do(bytes.NewReader(d)) - size = len(d) + buf, err = dc.Do(bytes.NewReader(buf)) + size = len(buf) } else { - d, size, err = decompress(compressor, d, maxReceiveMessageSize) + buf, size, err = decompress(compressor, buf, maxReceiveMessageSize) } if err != nil { - return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) + return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the received message: %v", err) + } + if size > maxReceiveMessageSize { + // TODO: Revisit the error code. Currently keep it consistent with java + // implementation. + return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message after decompression larger than max (%d vs. %d)", size, maxReceiveMessageSize) } - } else { - size = len(d) - } - if size > maxReceiveMessageSize { - // TODO: Revisit the error code. Currently keep it consistent with java - // implementation. - return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", size, maxReceiveMessageSize) } - return d, nil + return buf, nil } // Using compressor, decompress d, returning data and size. @@ -746,7 +785,7 @@ func decompress(compressor encoding.Compressor, d []byte, maxReceiveMessageSize } // Read from LimitReader with limit max+1. So if the underlying // reader is over limit, the result will be bigger than max. - d, err = ioutil.ReadAll(io.LimitReader(dcReader, int64(maxReceiveMessageSize)+1)) + d, err = io.ReadAll(io.LimitReader(dcReader, int64(maxReceiveMessageSize)+1)) return d, len(d), err } @@ -754,15 +793,17 @@ func decompress(compressor encoding.Compressor, d []byte, maxReceiveMessageSize // dc takes precedence over compressor. // TODO(dfawley): wrap the old compressor/decompressor using the new API? func recv(p *parser, c baseCodec, s *transport.Stream, dc Decompressor, m interface{}, maxReceiveMessageSize int, payInfo *payloadInfo, compressor encoding.Compressor) error { - d, err := recvAndDecompress(p, s, dc, maxReceiveMessageSize, payInfo, compressor) + buf, err := recvAndDecompress(p, s, dc, maxReceiveMessageSize, payInfo, compressor) if err != nil { return err } - if err := c.Unmarshal(d, m); err != nil { - return status.Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err) + if err := c.Unmarshal(buf, m); err != nil { + return status.Errorf(codes.Internal, "grpc: failed to unmarshal the received message: %v", err) } if payInfo != nil { - payInfo.uncompressedBytes = d + payInfo.uncompressedBytes = buf + } else { + p.recvBufferPool.Put(&buf) } return nil } @@ -828,26 +869,28 @@ func Errorf(c codes.Code, format string, a ...interface{}) error { // toRPCErr converts an error into an error from the status package. func toRPCErr(err error) error { - if err == nil || err == io.EOF { + switch err { + case nil, io.EOF: return err - } - if err == io.ErrUnexpectedEOF { + case context.DeadlineExceeded: + return status.Error(codes.DeadlineExceeded, err.Error()) + case context.Canceled: + return status.Error(codes.Canceled, err.Error()) + case io.ErrUnexpectedEOF: return status.Error(codes.Internal, err.Error()) } - if _, ok := status.FromError(err); ok { - return err - } + switch e := err.(type) { case transport.ConnectionError: return status.Error(codes.Unavailable, e.Desc) - default: - switch err { - case context.DeadlineExceeded: - return status.Error(codes.DeadlineExceeded, err.Error()) - case context.Canceled: - return status.Error(codes.Canceled, err.Error()) - } + case *transport.NewStreamError: + return toRPCErr(e.Err) + } + + if _, ok := status.FromError(err); ok { + return err } + return status.Error(codes.Unknown, err.Error()) } diff --git a/vendor/google.golang.org/grpc/server.go b/vendor/google.golang.org/grpc/server.go index 0a151dee..e076ec71 100644 --- a/vendor/google.golang.org/grpc/server.go +++ b/vendor/google.golang.org/grpc/server.go @@ -43,8 +43,8 @@ import ( "google.golang.org/grpc/internal" "google.golang.org/grpc/internal/binarylog" "google.golang.org/grpc/internal/channelz" - "google.golang.org/grpc/internal/grpcrand" "google.golang.org/grpc/internal/grpcsync" + "google.golang.org/grpc/internal/grpcutil" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" @@ -73,6 +73,14 @@ func init() { internal.DrainServerTransports = func(srv *Server, addr string) { srv.drainServerTransports(addr) } + internal.AddGlobalServerOptions = func(opt ...ServerOption) { + globalServerOptions = append(globalServerOptions, opt...) + } + internal.ClearGlobalServerOptions = func() { + globalServerOptions = nil + } + internal.BinaryLogger = binaryLogger + internal.JoinServerOptions = newJoinServerOption } var statusOK = status.New(codes.OK, "") @@ -134,10 +142,10 @@ type Server struct { channelzRemoveOnce sync.Once serveWG sync.WaitGroup // counts active Serve goroutines for GracefulStop - channelzID int64 // channelz unique identification number + channelzID *channelz.Identifier czData *channelzData - serverWorkerChannels []chan *serverWorkerData + serverWorkerChannel chan *serverWorkerData } type serverOptions struct { @@ -149,8 +157,9 @@ type serverOptions struct { streamInt StreamServerInterceptor chainUnaryInts []UnaryServerInterceptor chainStreamInts []StreamServerInterceptor + binaryLogger binarylog.Logger inTapHandle tap.ServerInHandle - statsHandler stats.Handler + statsHandlers []stats.Handler maxConcurrentStreams uint32 maxReceiveMessageSize int maxSendMessageSize int @@ -165,6 +174,7 @@ type serverOptions struct { maxHeaderListSize *uint32 headerTableSize *uint32 numServerWorkers uint32 + recvBufferPool SharedBufferPool } var defaultServerOptions = serverOptions{ @@ -173,7 +183,9 @@ var defaultServerOptions = serverOptions{ connectionTimeout: 120 * time.Second, writeBufferSize: defaultWriteBufSize, readBufferSize: defaultReadBufSize, + recvBufferPool: nopBufferPool{}, } +var globalServerOptions []ServerOption // A ServerOption sets options such as credentials, codec and keepalive parameters, etc. type ServerOption interface { @@ -183,7 +195,7 @@ type ServerOption interface { // EmptyServerOption does not alter the server configuration. It can be embedded // in another structure to build custom server options. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -207,10 +219,27 @@ func newFuncServerOption(f func(*serverOptions)) *funcServerOption { } } -// WriteBufferSize determines how much data can be batched before doing a write on the wire. -// The corresponding memory allocation for this buffer will be twice the size to keep syscalls low. -// The default value for this buffer is 32KB. -// Zero will disable the write buffer such that each write will be on underlying connection. +// joinServerOption provides a way to combine arbitrary number of server +// options into one. +type joinServerOption struct { + opts []ServerOption +} + +func (mdo *joinServerOption) apply(do *serverOptions) { + for _, opt := range mdo.opts { + opt.apply(do) + } +} + +func newJoinServerOption(opts ...ServerOption) ServerOption { + return &joinServerOption{opts: opts} +} + +// WriteBufferSize determines how much data can be batched before doing a write +// on the wire. The corresponding memory allocation for this buffer will be +// twice the size to keep syscalls low. The default value for this buffer is +// 32KB. Zero or negative values will disable the write buffer such that each +// write will be on underlying connection. // Note: A Send call may not directly translate to a write. func WriteBufferSize(s int) ServerOption { return newFuncServerOption(func(o *serverOptions) { @@ -218,11 +247,10 @@ func WriteBufferSize(s int) ServerOption { }) } -// ReadBufferSize lets you set the size of read buffer, this determines how much data can be read at most -// for one read syscall. -// The default value for this buffer is 32KB. -// Zero will disable read buffer for a connection so data framer can access the underlying -// conn directly. +// ReadBufferSize lets you set the size of read buffer, this determines how much +// data can be read at most for one read syscall. The default value for this +// buffer is 32KB. Zero or negative values will disable read buffer for a +// connection so data framer can access the underlying conn directly. func ReadBufferSize(s int) ServerOption { return newFuncServerOption(func(o *serverOptions) { o.readBufferSize = s @@ -298,7 +326,7 @@ func CustomCodec(codec Codec) ServerOption { // https://github.com/grpc/grpc-go/blob/master/Documentation/encoding.md#using-a-codec. // Will be supported throughout 1.x. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -419,7 +447,7 @@ func ChainStreamInterceptor(interceptors ...StreamServerInterceptor) ServerOptio // InTapHandle returns a ServerOption that sets the tap handle for all the server // transport to be created. Only one can be installed. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -435,7 +463,21 @@ func InTapHandle(h tap.ServerInHandle) ServerOption { // StatsHandler returns a ServerOption that sets the stats handler for the server. func StatsHandler(h stats.Handler) ServerOption { return newFuncServerOption(func(o *serverOptions) { - o.statsHandler = h + if h == nil { + logger.Error("ignoring nil parameter in grpc.StatsHandler ServerOption") + // Do not allow a nil stats handler, which would otherwise cause + // panics. + return + } + o.statsHandlers = append(o.statsHandlers, h) + }) +} + +// binaryLogger returns a ServerOption that can set the binary logger for the +// server. +func binaryLogger(bl binarylog.Logger) ServerOption { + return newFuncServerOption(func(o *serverOptions) { + o.binaryLogger = bl }) } @@ -462,7 +504,7 @@ func UnknownServiceHandler(streamHandler StreamHandler) ServerOption { // new connections. If this is not set, the default is 120 seconds. A zero or // negative value will result in an immediate timeout. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -483,7 +525,7 @@ func MaxHeaderListSize(s uint32) ServerOption { // HeaderTableSize returns a ServerOption that sets the size of dynamic // header table for stream. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -498,7 +540,7 @@ func HeaderTableSize(s uint32) ServerOption { // zero (default) will disable workers and spawn a new goroutine for each // stream. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -512,6 +554,27 @@ func NumStreamWorkers(numServerWorkers uint32) ServerOption { }) } +// RecvBufferPool returns a ServerOption that configures the server +// to use the provided shared buffer pool for parsing incoming messages. Depending +// on the application's workload, this could result in reduced memory allocation. +// +// If you are unsure about how to implement a memory pool but want to utilize one, +// begin with grpc.NewSharedBufferPool. +// +// Note: The shared buffer pool feature will not be active if any of the following +// options are used: StatsHandler, EnableTracing, or binary logging. In such +// cases, the shared buffer pool will be ignored. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +func RecvBufferPool(bufferPool SharedBufferPool) ServerOption { + return newFuncServerOption(func(o *serverOptions) { + o.recvBufferPool = bufferPool + }) +} + // serverWorkerResetThreshold defines how often the stack must be reset. Every // N requests, by spawning a new goroutine in its place, a worker can reset its // stack so that large stacks don't live in memory forever. 2^16 should allow @@ -520,46 +583,47 @@ func NumStreamWorkers(numServerWorkers uint32) ServerOption { const serverWorkerResetThreshold = 1 << 16 // serverWorkers blocks on a *transport.Stream channel forever and waits for -// data to be fed by serveStreams. This allows different requests to be +// data to be fed by serveStreams. This allows multiple requests to be // processed by the same goroutine, removing the need for expensive stack // re-allocations (see the runtime.morestack problem [1]). // // [1] https://github.com/golang/go/issues/18138 -func (s *Server) serverWorker(ch chan *serverWorkerData) { - // To make sure all server workers don't reset at the same time, choose a - // random number of iterations before resetting. - threshold := serverWorkerResetThreshold + grpcrand.Intn(serverWorkerResetThreshold) - for completed := 0; completed < threshold; completed++ { - data, ok := <-ch +func (s *Server) serverWorker() { + for completed := 0; completed < serverWorkerResetThreshold; completed++ { + data, ok := <-s.serverWorkerChannel if !ok { return } - s.handleStream(data.st, data.stream, s.traceInfo(data.st, data.stream)) - data.wg.Done() + s.handleSingleStream(data) } - go s.serverWorker(ch) + go s.serverWorker() } -// initServerWorkers creates worker goroutines and channels to process incoming +func (s *Server) handleSingleStream(data *serverWorkerData) { + defer data.wg.Done() + s.handleStream(data.st, data.stream, s.traceInfo(data.st, data.stream)) +} + +// initServerWorkers creates worker goroutines and a channel to process incoming // connections to reduce the time spent overall on runtime.morestack. func (s *Server) initServerWorkers() { - s.serverWorkerChannels = make([]chan *serverWorkerData, s.opts.numServerWorkers) + s.serverWorkerChannel = make(chan *serverWorkerData) for i := uint32(0); i < s.opts.numServerWorkers; i++ { - s.serverWorkerChannels[i] = make(chan *serverWorkerData) - go s.serverWorker(s.serverWorkerChannels[i]) + go s.serverWorker() } } func (s *Server) stopServerWorkers() { - for i := uint32(0); i < s.opts.numServerWorkers; i++ { - close(s.serverWorkerChannels[i]) - } + close(s.serverWorkerChannel) } // NewServer creates a gRPC server which has no service registered and has not // started to accept requests yet. func NewServer(opt ...ServerOption) *Server { opts := defaultServerOptions + for _, o := range globalServerOptions { + o.apply(&opts) + } for _, o := range opt { o.apply(&opts) } @@ -584,9 +648,8 @@ func NewServer(opt ...ServerOption) *Server { s.initServerWorkers() } - if channelz.IsOn() { - s.channelzID = channelz.RegisterServer(&channelzServer{s}, "") - } + s.channelzID = channelz.RegisterServer(&channelzServer{s}, "") + channelz.Info(logger, s.channelzID, "Server created") return s } @@ -710,16 +773,9 @@ func (s *Server) GetServiceInfo() map[string]ServiceInfo { // the server being stopped. var ErrServerStopped = errors.New("grpc: the server has been stopped") -func (s *Server) useTransportAuthenticator(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) { - if s.opts.creds == nil { - return rawConn, nil, nil - } - return s.opts.creds.ServerHandshake(rawConn) -} - type listenSocket struct { net.Listener - channelzID int64 + channelzID *channelz.Identifier } func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric { @@ -731,9 +787,8 @@ func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric { func (l *listenSocket) Close() error { err := l.Listener.Close() - if channelz.IsOn() { - channelz.RemoveEntry(l.channelzID) - } + channelz.RemoveEntry(l.channelzID) + channelz.Info(logger, l.channelzID, "ListenSocket deleted") return err } @@ -766,11 +821,6 @@ func (s *Server) Serve(lis net.Listener) error { ls := &listenSocket{Listener: lis} s.lis[ls] = true - if channelz.IsOn() { - ls.channelzID = channelz.RegisterListenSocket(ls, s.channelzID, lis.Addr().String()) - } - s.mu.Unlock() - defer func() { s.mu.Lock() if s.lis != nil && s.lis[ls] { @@ -780,8 +830,16 @@ func (s *Server) Serve(lis net.Listener) error { s.mu.Unlock() }() - var tempDelay time.Duration // how long to sleep on accept failure + var err error + ls.channelzID, err = channelz.RegisterListenSocket(ls, s.channelzID, lis.Addr().String()) + if err != nil { + s.mu.Unlock() + return err + } + s.mu.Unlock() + channelz.Info(logger, ls.channelzID, "ListenSocket created") + var tempDelay time.Duration // how long to sleep on accept failure for { rawConn, err := lis.Accept() if err != nil { @@ -839,28 +897,14 @@ func (s *Server) handleRawConn(lisAddr string, rawConn net.Conn) { return } rawConn.SetDeadline(time.Now().Add(s.opts.connectionTimeout)) - conn, authInfo, err := s.useTransportAuthenticator(rawConn) - if err != nil { - // ErrConnDispatched means that the connection was dispatched away from - // gRPC; those connections should be left open. - if err != credentials.ErrConnDispatched { - s.mu.Lock() - s.errorf("ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err) - s.mu.Unlock() - channelz.Warningf(logger, s.channelzID, "grpc: Server.Serve failed to complete security handshake from %q: %v", rawConn.RemoteAddr(), err) - rawConn.Close() - } - rawConn.SetDeadline(time.Time{}) - return - } // Finish handshaking (HTTP2) - st := s.newHTTP2Transport(conn, authInfo) + st := s.newHTTP2Transport(rawConn) + rawConn.SetDeadline(time.Time{}) if st == nil { return } - rawConn.SetDeadline(time.Time{}) if !s.addConn(lisAddr, st) { return } @@ -874,19 +918,20 @@ func (s *Server) drainServerTransports(addr string) { s.mu.Lock() conns := s.conns[addr] for st := range conns { - st.Drain() + st.Drain("") } s.mu.Unlock() } // newHTTP2Transport sets up a http/2 transport (using the // gRPC http2 server transport in transport/http2_server.go). -func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) transport.ServerTransport { +func (s *Server) newHTTP2Transport(c net.Conn) transport.ServerTransport { config := &transport.ServerConfig{ MaxStreams: s.opts.maxConcurrentStreams, - AuthInfo: authInfo, + ConnectionTimeout: s.opts.connectionTimeout, + Credentials: s.opts.creds, InTapHandle: s.opts.inTapHandle, - StatsHandler: s.opts.statsHandler, + StatsHandlers: s.opts.statsHandlers, KeepaliveParams: s.opts.keepaliveParams, KeepalivePolicy: s.opts.keepalivePolicy, InitialWindowSize: s.opts.initialWindowSize, @@ -897,13 +942,20 @@ func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) tr MaxHeaderListSize: s.opts.maxHeaderListSize, HeaderTableSize: s.opts.headerTableSize, } - st, err := transport.NewServerTransport("http2", c, config) + st, err := transport.NewServerTransport(c, config) if err != nil { s.mu.Lock() s.errorf("NewServerTransport(%q) failed: %v", c.RemoteAddr(), err) s.mu.Unlock() - c.Close() - channelz.Warning(logger, s.channelzID, "grpc: Server.Serve failed to create ServerTransport: ", err) + // ErrConnDispatched means that the connection was dispatched away from + // gRPC; those connections should be left open. + if err != credentials.ErrConnDispatched { + // Don't log on ErrConnDispatched and io.EOF to prevent log spam. + if err != io.EOF { + channelz.Info(logger, s.channelzID, "grpc: Server.Serve failed to create ServerTransport: ", err) + } + c.Close() + } return nil } @@ -911,29 +963,24 @@ func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) tr } func (s *Server) serveStreams(st transport.ServerTransport) { - defer st.Close() + defer st.Close(errors.New("finished serving streams for the server transport")) var wg sync.WaitGroup - var roundRobinCounter uint32 st.HandleStreams(func(stream *transport.Stream) { wg.Add(1) if s.opts.numServerWorkers > 0 { data := &serverWorkerData{st: st, wg: &wg, stream: stream} select { - case s.serverWorkerChannels[atomic.AddUint32(&roundRobinCounter, 1)%s.opts.numServerWorkers] <- data: + case s.serverWorkerChannel <- data: + return default: // If all stream workers are busy, fallback to the default code path. - go func() { - s.handleStream(st, stream, s.traceInfo(st, stream)) - wg.Done() - }() } - } else { - go func() { - defer wg.Done() - s.handleStream(st, stream, s.traceInfo(st, stream)) - }() } + go func() { + defer wg.Done() + s.handleStream(st, stream, s.traceInfo(st, stream)) + }() }, func(ctx context.Context, method string) context.Context { if !EnableTracing { return ctx @@ -958,26 +1005,27 @@ var _ http.Handler = (*Server)(nil) // To share one port (such as 443 for https) between gRPC and an // existing http.Handler, use a root http.Handler such as: // -// if r.ProtoMajor == 2 && strings.HasPrefix( -// r.Header.Get("Content-Type"), "application/grpc") { -// grpcServer.ServeHTTP(w, r) -// } else { -// yourMux.ServeHTTP(w, r) -// } +// if r.ProtoMajor == 2 && strings.HasPrefix( +// r.Header.Get("Content-Type"), "application/grpc") { +// grpcServer.ServeHTTP(w, r) +// } else { +// yourMux.ServeHTTP(w, r) +// } // // Note that ServeHTTP uses Go's HTTP/2 server implementation which is totally // separate from grpc-go's HTTP/2 server. Performance and features may vary // between the two paths. ServeHTTP does not support some gRPC features // available through grpc-go's HTTP/2 server. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { - st, err := transport.NewServerHandlerTransport(w, r, s.opts.statsHandler) + st, err := transport.NewServerHandlerTransport(w, r, s.opts.statsHandlers) if err != nil { - http.Error(w, err.Error(), http.StatusInternalServerError) + // Errors returned from transport.NewServerHandlerTransport have + // already been written to w. return } if !s.addConn(listenerAddressForServeHTTP, st) { @@ -1015,13 +1063,13 @@ func (s *Server) addConn(addr string, st transport.ServerTransport) bool { s.mu.Lock() defer s.mu.Unlock() if s.conns == nil { - st.Close() + st.Close(errors.New("Server.addConn called when server has already been stopped")) return false } if s.drain { // Transport added after we drained our existing conns: drain it // immediately. - st.Drain() + st.Drain("") } if s.conns[addr] == nil { @@ -1088,8 +1136,10 @@ func (s *Server) sendResponse(t transport.ServerTransport, stream *transport.Str return status.Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(payload), s.opts.maxSendMessageSize) } err = t.Write(stream, hdr, payload, opts) - if err == nil && s.opts.statsHandler != nil { - s.opts.statsHandler.HandleRPC(stream.Context(), outPayload(false, msg, data, payload, time.Now())) + if err == nil { + for _, sh := range s.opts.statsHandlers { + sh.HandleRPC(stream.Context(), outPayload(false, msg, data, payload, time.Now())) + } } return err } @@ -1109,36 +1159,40 @@ func chainUnaryServerInterceptors(s *Server) { } else if len(interceptors) == 1 { chainedInt = interceptors[0] } else { - chainedInt = func(ctx context.Context, req interface{}, info *UnaryServerInfo, handler UnaryHandler) (interface{}, error) { - return interceptors[0](ctx, req, info, getChainUnaryHandler(interceptors, 0, info, handler)) - } + chainedInt = chainUnaryInterceptors(interceptors) } s.opts.unaryInt = chainedInt } -// getChainUnaryHandler recursively generate the chained UnaryHandler +func chainUnaryInterceptors(interceptors []UnaryServerInterceptor) UnaryServerInterceptor { + return func(ctx context.Context, req interface{}, info *UnaryServerInfo, handler UnaryHandler) (interface{}, error) { + return interceptors[0](ctx, req, info, getChainUnaryHandler(interceptors, 0, info, handler)) + } +} + func getChainUnaryHandler(interceptors []UnaryServerInterceptor, curr int, info *UnaryServerInfo, finalHandler UnaryHandler) UnaryHandler { if curr == len(interceptors)-1 { return finalHandler } - return func(ctx context.Context, req interface{}) (interface{}, error) { return interceptors[curr+1](ctx, req, info, getChainUnaryHandler(interceptors, curr+1, info, finalHandler)) } } func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.Stream, info *serviceInfo, md *MethodDesc, trInfo *traceInfo) (err error) { - sh := s.opts.statsHandler - if sh != nil || trInfo != nil || channelz.IsOn() { + shs := s.opts.statsHandlers + if len(shs) != 0 || trInfo != nil || channelz.IsOn() { if channelz.IsOn() { s.incrCallsStarted() } var statsBegin *stats.Begin - if sh != nil { + for _, sh := range shs { beginTime := time.Now() statsBegin = &stats.Begin{ - BeginTime: beginTime, + BeginTime: beginTime, + IsClientStream: false, + IsServerStream: false, } sh.HandleRPC(stream.Context(), statsBegin) } @@ -1164,7 +1218,7 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. trInfo.tr.Finish() } - if sh != nil { + for _, sh := range shs { end := &stats.End{ BeginTime: statsBegin.BeginTime, EndTime: time.Now(), @@ -1184,9 +1238,16 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. } }() } - - binlog := binarylog.GetMethodLogger(stream.Method()) - if binlog != nil { + var binlogs []binarylog.MethodLogger + if ml := binarylog.GetMethodLogger(stream.Method()); ml != nil { + binlogs = append(binlogs, ml) + } + if s.opts.binaryLogger != nil { + if ml := s.opts.binaryLogger.GetMethodLogger(stream.Method()); ml != nil { + binlogs = append(binlogs, ml) + } + } + if len(binlogs) != 0 { ctx := stream.Context() md, _ := metadata.FromIncomingContext(ctx) logEntry := &binarylog.ClientHeader{ @@ -1206,7 +1267,9 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. if peer, ok := peer.FromContext(ctx); ok { logEntry.PeerAddr = peer.Addr } - binlog.Log(logEntry) + for _, binlog := range binlogs { + binlog.Log(ctx, logEntry) + } } // comp and cp are used for compression. decomp and dc are used for @@ -1216,6 +1279,7 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. var comp, decomp encoding.Compressor var cp Compressor var dc Decompressor + var sendCompressorName string // If dc is set and matches the stream's compression, use it. Otherwise, try // to find a matching registered compressor for decomp. @@ -1236,23 +1300,29 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. // NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686. if s.opts.cp != nil { cp = s.opts.cp - stream.SetSendCompress(cp.Type()) + sendCompressorName = cp.Type() } else if rc := stream.RecvCompress(); rc != "" && rc != encoding.Identity { // Legacy compressor not specified; attempt to respond with same encoding. comp = encoding.GetCompressor(rc) if comp != nil { - stream.SetSendCompress(rc) + sendCompressorName = comp.Name() + } + } + + if sendCompressorName != "" { + if err := stream.SetSendCompress(sendCompressorName); err != nil { + return status.Errorf(codes.Internal, "grpc: failed to set send compressor: %v", err) } } var payInfo *payloadInfo - if sh != nil || binlog != nil { + if len(shs) != 0 || len(binlogs) != 0 { payInfo = &payloadInfo{} } - d, err := recvAndDecompress(&parser{r: stream}, stream, dc, s.opts.maxReceiveMessageSize, payInfo, decomp) + d, err := recvAndDecompress(&parser{r: stream, recvBufferPool: s.opts.recvBufferPool}, stream, dc, s.opts.maxReceiveMessageSize, payInfo, decomp) if err != nil { if e := t.WriteStatus(stream, status.Convert(err)); e != nil { - channelz.Warningf(logger, s.channelzID, "grpc: Server.processUnaryRPC failed to write status %v", e) + channelz.Warningf(logger, s.channelzID, "grpc: Server.processUnaryRPC failed to write status: %v", e) } return err } @@ -1263,19 +1333,23 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. if err := s.getCodec(stream.ContentSubtype()).Unmarshal(d, v); err != nil { return status.Errorf(codes.Internal, "grpc: error unmarshalling request: %v", err) } - if sh != nil { + for _, sh := range shs { sh.HandleRPC(stream.Context(), &stats.InPayload{ - RecvTime: time.Now(), - Payload: v, - WireLength: payInfo.wireLength + headerLen, - Data: d, - Length: len(d), + RecvTime: time.Now(), + Payload: v, + Length: len(d), + WireLength: payInfo.compressedLength + headerLen, + CompressedLength: payInfo.compressedLength, + Data: d, }) } - if binlog != nil { - binlog.Log(&binarylog.ClientMessage{ + if len(binlogs) != 0 { + cm := &binarylog.ClientMessage{ Message: d, - }) + } + for _, binlog := range binlogs { + binlog.Log(stream.Context(), cm) + } } if trInfo != nil { trInfo.tr.LazyLog(&payload{sent: false, msg: v}, true) @@ -1287,9 +1361,10 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. if appErr != nil { appStatus, ok := status.FromError(appErr) if !ok { - // Convert appErr if it is not a grpc status error. - appErr = status.Error(codes.Unknown, appErr.Error()) - appStatus, _ = status.FromError(appErr) + // Convert non-status application error to a status error with code + // Unknown, but handle context errors specifically. + appStatus = status.FromContextError(appErr) + appErr = appStatus.Err() } if trInfo != nil { trInfo.tr.LazyLog(stringer(appStatus.Message()), true) @@ -1298,18 +1373,24 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. if e := t.WriteStatus(stream, appStatus); e != nil { channelz.Warningf(logger, s.channelzID, "grpc: Server.processUnaryRPC failed to write status: %v", e) } - if binlog != nil { + if len(binlogs) != 0 { if h, _ := stream.Header(); h.Len() > 0 { // Only log serverHeader if there was header. Otherwise it can // be trailer only. - binlog.Log(&binarylog.ServerHeader{ + sh := &binarylog.ServerHeader{ Header: h, - }) + } + for _, binlog := range binlogs { + binlog.Log(stream.Context(), sh) + } } - binlog.Log(&binarylog.ServerTrailer{ + st := &binarylog.ServerTrailer{ Trailer: stream.Trailer(), Err: appErr, - }) + } + for _, binlog := range binlogs { + binlog.Log(stream.Context(), st) + } } return appErr } @@ -1318,6 +1399,11 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. } opts := &transport.Options{Last: true} + // Server handler could have set new compressor by calling SetSendCompressor. + // In case it is set, we need to use it for compressing outbound message. + if stream.SendCompress() != sendCompressorName { + comp = encoding.GetCompressor(stream.SendCompress()) + } if err := s.sendResponse(t, stream, reply, cp, opts, comp); err != nil { if err == io.EOF { // The entire stream is done (for unary RPC only). @@ -1335,26 +1421,34 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. panic(fmt.Sprintf("grpc: Unexpected error (%T) from sendResponse: %v", st, st)) } } - if binlog != nil { + if len(binlogs) != 0 { h, _ := stream.Header() - binlog.Log(&binarylog.ServerHeader{ + sh := &binarylog.ServerHeader{ Header: h, - }) - binlog.Log(&binarylog.ServerTrailer{ + } + st := &binarylog.ServerTrailer{ Trailer: stream.Trailer(), Err: appErr, - }) + } + for _, binlog := range binlogs { + binlog.Log(stream.Context(), sh) + binlog.Log(stream.Context(), st) + } } return err } - if binlog != nil { + if len(binlogs) != 0 { h, _ := stream.Header() - binlog.Log(&binarylog.ServerHeader{ + sh := &binarylog.ServerHeader{ Header: h, - }) - binlog.Log(&binarylog.ServerMessage{ + } + sm := &binarylog.ServerMessage{ Message: reply, - }) + } + for _, binlog := range binlogs { + binlog.Log(stream.Context(), sh) + binlog.Log(stream.Context(), sm) + } } if channelz.IsOn() { t.IncrMsgSent() @@ -1365,14 +1459,16 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. // TODO: Should we be logging if writing status failed here, like above? // Should the logging be in WriteStatus? Should we ignore the WriteStatus // error or allow the stats handler to see it? - err = t.WriteStatus(stream, statusOK) - if binlog != nil { - binlog.Log(&binarylog.ServerTrailer{ + if len(binlogs) != 0 { + st := &binarylog.ServerTrailer{ Trailer: stream.Trailer(), Err: appErr, - }) + } + for _, binlog := range binlogs { + binlog.Log(stream.Context(), st) + } } - return err + return t.WriteStatus(stream, statusOK) } // chainStreamServerInterceptors chains all stream server interceptors into one. @@ -1390,22 +1486,24 @@ func chainStreamServerInterceptors(s *Server) { } else if len(interceptors) == 1 { chainedInt = interceptors[0] } else { - chainedInt = func(srv interface{}, ss ServerStream, info *StreamServerInfo, handler StreamHandler) error { - return interceptors[0](srv, ss, info, getChainStreamHandler(interceptors, 0, info, handler)) - } + chainedInt = chainStreamInterceptors(interceptors) } s.opts.streamInt = chainedInt } -// getChainStreamHandler recursively generate the chained StreamHandler +func chainStreamInterceptors(interceptors []StreamServerInterceptor) StreamServerInterceptor { + return func(srv interface{}, ss ServerStream, info *StreamServerInfo, handler StreamHandler) error { + return interceptors[0](srv, ss, info, getChainStreamHandler(interceptors, 0, info, handler)) + } +} + func getChainStreamHandler(interceptors []StreamServerInterceptor, curr int, info *StreamServerInfo, finalHandler StreamHandler) StreamHandler { if curr == len(interceptors)-1 { return finalHandler } - - return func(srv interface{}, ss ServerStream) error { - return interceptors[curr+1](srv, ss, info, getChainStreamHandler(interceptors, curr+1, info, finalHandler)) + return func(srv interface{}, stream ServerStream) error { + return interceptors[curr+1](srv, stream, info, getChainStreamHandler(interceptors, curr+1, info, finalHandler)) } } @@ -1413,29 +1511,33 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp if channelz.IsOn() { s.incrCallsStarted() } - sh := s.opts.statsHandler + shs := s.opts.statsHandlers var statsBegin *stats.Begin - if sh != nil { + if len(shs) != 0 { beginTime := time.Now() statsBegin = &stats.Begin{ - BeginTime: beginTime, + BeginTime: beginTime, + IsClientStream: sd.ClientStreams, + IsServerStream: sd.ServerStreams, + } + for _, sh := range shs { + sh.HandleRPC(stream.Context(), statsBegin) } - sh.HandleRPC(stream.Context(), statsBegin) } ctx := NewContextWithServerTransportStream(stream.Context(), stream) ss := &serverStream{ ctx: ctx, t: t, s: stream, - p: &parser{r: stream}, + p: &parser{r: stream, recvBufferPool: s.opts.recvBufferPool}, codec: s.getCodec(stream.ContentSubtype()), maxReceiveMessageSize: s.opts.maxReceiveMessageSize, maxSendMessageSize: s.opts.maxSendMessageSize, trInfo: trInfo, - statsHandler: sh, + statsHandler: shs, } - if sh != nil || trInfo != nil || channelz.IsOn() { + if len(shs) != 0 || trInfo != nil || channelz.IsOn() { // See comment in processUnaryRPC on defers. defer func() { if trInfo != nil { @@ -1449,7 +1551,7 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp ss.mu.Unlock() } - if sh != nil { + if len(shs) != 0 { end := &stats.End{ BeginTime: statsBegin.BeginTime, EndTime: time.Now(), @@ -1457,7 +1559,9 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp if err != nil && err != io.EOF { end.Error = toRPCErr(err) } - sh.HandleRPC(stream.Context(), end) + for _, sh := range shs { + sh.HandleRPC(stream.Context(), end) + } } if channelz.IsOn() { @@ -1470,8 +1574,15 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp }() } - ss.binlog = binarylog.GetMethodLogger(stream.Method()) - if ss.binlog != nil { + if ml := binarylog.GetMethodLogger(stream.Method()); ml != nil { + ss.binlogs = append(ss.binlogs, ml) + } + if s.opts.binaryLogger != nil { + if ml := s.opts.binaryLogger.GetMethodLogger(stream.Method()); ml != nil { + ss.binlogs = append(ss.binlogs, ml) + } + } + if len(ss.binlogs) != 0 { md, _ := metadata.FromIncomingContext(ctx) logEntry := &binarylog.ClientHeader{ Header: md, @@ -1490,7 +1601,9 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp if peer, ok := peer.FromContext(ss.Context()); ok { logEntry.PeerAddr = peer.Addr } - ss.binlog.Log(logEntry) + for _, binlog := range ss.binlogs { + binlog.Log(stream.Context(), logEntry) + } } // If dc is set and matches the stream's compression, use it. Otherwise, try @@ -1512,15 +1625,23 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp // NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686. if s.opts.cp != nil { ss.cp = s.opts.cp - stream.SetSendCompress(s.opts.cp.Type()) + ss.sendCompressorName = s.opts.cp.Type() } else if rc := stream.RecvCompress(); rc != "" && rc != encoding.Identity { // Legacy compressor not specified; attempt to respond with same encoding. ss.comp = encoding.GetCompressor(rc) if ss.comp != nil { - stream.SetSendCompress(rc) + ss.sendCompressorName = rc } } + if ss.sendCompressorName != "" { + if err := stream.SetSendCompress(ss.sendCompressorName); err != nil { + return status.Errorf(codes.Internal, "grpc: failed to set send compressor: %v", err) + } + } + + ss.ctx = newContextWithRPCInfo(ss.ctx, false, ss.codec, ss.cp, ss.comp) + if trInfo != nil { trInfo.tr.LazyLog(&trInfo.firstLine, false) } @@ -1542,7 +1663,9 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp if appErr != nil { appStatus, ok := status.FromError(appErr) if !ok { - appStatus = status.New(codes.Unknown, appErr.Error()) + // Convert non-status application error to a status error with code + // Unknown, but handle context errors specifically. + appStatus = status.FromContextError(appErr) appErr = appStatus.Err() } if trInfo != nil { @@ -1551,13 +1674,16 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp ss.trInfo.tr.SetError() ss.mu.Unlock() } - t.WriteStatus(ss.s, appStatus) - if ss.binlog != nil { - ss.binlog.Log(&binarylog.ServerTrailer{ + if len(ss.binlogs) != 0 { + st := &binarylog.ServerTrailer{ Trailer: ss.s.Trailer(), Err: appErr, - }) + } + for _, binlog := range ss.binlogs { + binlog.Log(stream.Context(), st) + } } + t.WriteStatus(ss.s, appStatus) // TODO: Should we log an error from WriteStatus here and below? return appErr } @@ -1566,14 +1692,16 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp ss.trInfo.tr.LazyLog(stringer("OK"), false) ss.mu.Unlock() } - err = t.WriteStatus(ss.s, statusOK) - if ss.binlog != nil { - ss.binlog.Log(&binarylog.ServerTrailer{ + if len(ss.binlogs) != 0 { + st := &binarylog.ServerTrailer{ Trailer: ss.s.Trailer(), Err: appErr, - }) + } + for _, binlog := range ss.binlogs { + binlog.Log(stream.Context(), st) + } } - return err + return t.WriteStatus(ss.s, statusOK) } func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Stream, trInfo *traceInfo) { @@ -1588,7 +1716,7 @@ func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Str trInfo.tr.SetError() } errDesc := fmt.Sprintf("malformed method name: %q", stream.Method()) - if err := t.WriteStatus(stream, status.New(codes.ResourceExhausted, errDesc)); err != nil { + if err := t.WriteStatus(stream, status.New(codes.Unimplemented, errDesc)); err != nil { if trInfo != nil { trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) trInfo.tr.SetError() @@ -1647,7 +1775,7 @@ type streamKey struct{} // NewContextWithServerTransportStream creates a new context from ctx and // attaches stream to it. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -1662,7 +1790,7 @@ func NewContextWithServerTransportStream(ctx context.Context, stream ServerTrans // // See also NewContextWithServerTransportStream. // -// Experimental +// # Experimental // // Notice: This type is EXPERIMENTAL and may be changed or removed in a // later release. @@ -1677,7 +1805,7 @@ type ServerTransportStream interface { // ctx. Returns nil if the given context has no stream associated with it // (which implies it is not an RPC invocation context). // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. @@ -1699,11 +1827,7 @@ func (s *Server) Stop() { s.done.Fire() }() - s.channelzRemoveOnce.Do(func() { - if channelz.IsOn() { - channelz.RemoveEntry(s.channelzID) - } - }) + s.channelzRemoveOnce.Do(func() { channelz.RemoveEntry(s.channelzID) }) s.mu.Lock() listeners := s.lis @@ -1719,7 +1843,7 @@ func (s *Server) Stop() { } for _, cs := range conns { for st := range cs { - st.Close() + st.Close(errors.New("Server.Stop called")) } } if s.opts.numServerWorkers > 0 { @@ -1741,11 +1865,7 @@ func (s *Server) GracefulStop() { s.quit.Fire() defer s.done.Fire() - s.channelzRemoveOnce.Do(func() { - if channelz.IsOn() { - channelz.RemoveEntry(s.channelzID) - } - }) + s.channelzRemoveOnce.Do(func() { channelz.RemoveEntry(s.channelzID) }) s.mu.Lock() if s.conns == nil { s.mu.Unlock() @@ -1759,7 +1879,7 @@ func (s *Server) GracefulStop() { if !s.drain { for _, conns := range s.conns { for st := range conns { - st.Drain() + st.Drain("graceful_stop") } } s.drain = true @@ -1798,12 +1918,26 @@ func (s *Server) getCodec(contentSubtype string) baseCodec { return codec } -// SetHeader sets the header metadata. -// When called multiple times, all the provided metadata will be merged. -// All the metadata will be sent out when one of the following happens: -// - grpc.SendHeader() is called; -// - The first response is sent out; -// - An RPC status is sent out (error or success). +// SetHeader sets the header metadata to be sent from the server to the client. +// The context provided must be the context passed to the server's handler. +// +// Streaming RPCs should prefer the SetHeader method of the ServerStream. +// +// When called multiple times, all the provided metadata will be merged. All +// the metadata will be sent out when one of the following happens: +// +// - grpc.SendHeader is called, or for streaming handlers, stream.SendHeader. +// - The first response message is sent. For unary handlers, this occurs when +// the handler returns; for streaming handlers, this can happen when stream's +// SendMsg method is called. +// - An RPC status is sent out (error or success). This occurs when the handler +// returns. +// +// SetHeader will fail if called after any of the events above. +// +// The error returned is compatible with the status package. However, the +// status code will often not match the RPC status as seen by the client +// application, and therefore, should not be relied upon for this purpose. func SetHeader(ctx context.Context, md metadata.MD) error { if md.Len() == 0 { return nil @@ -1815,8 +1949,14 @@ func SetHeader(ctx context.Context, md metadata.MD) error { return stream.SetHeader(md) } -// SendHeader sends header metadata. It may be called at most once. -// The provided md and headers set by SetHeader() will be sent. +// SendHeader sends header metadata. It may be called at most once, and may not +// be called after any event that causes headers to be sent (see SetHeader for +// a complete list). The provided md and headers set by SetHeader() will be +// sent. +// +// The error returned is compatible with the status package. However, the +// status code will often not match the RPC status as seen by the client +// application, and therefore, should not be relied upon for this purpose. func SendHeader(ctx context.Context, md metadata.MD) error { stream := ServerTransportStreamFromContext(ctx) if stream == nil { @@ -1828,8 +1968,66 @@ func SendHeader(ctx context.Context, md metadata.MD) error { return nil } +// SetSendCompressor sets a compressor for outbound messages from the server. +// It must not be called after any event that causes headers to be sent +// (see ServerStream.SetHeader for the complete list). Provided compressor is +// used when below conditions are met: +// +// - compressor is registered via encoding.RegisterCompressor +// - compressor name must exist in the client advertised compressor names +// sent in grpc-accept-encoding header. Use ClientSupportedCompressors to +// get client supported compressor names. +// +// The context provided must be the context passed to the server's handler. +// It must be noted that compressor name encoding.Identity disables the +// outbound compression. +// By default, server messages will be sent using the same compressor with +// which request messages were sent. +// +// It is not safe to call SetSendCompressor concurrently with SendHeader and +// SendMsg. +// +// # Experimental +// +// Notice: This function is EXPERIMENTAL and may be changed or removed in a +// later release. +func SetSendCompressor(ctx context.Context, name string) error { + stream, ok := ServerTransportStreamFromContext(ctx).(*transport.Stream) + if !ok || stream == nil { + return fmt.Errorf("failed to fetch the stream from the given context") + } + + if err := validateSendCompressor(name, stream.ClientAdvertisedCompressors()); err != nil { + return fmt.Errorf("unable to set send compressor: %w", err) + } + + return stream.SetSendCompress(name) +} + +// ClientSupportedCompressors returns compressor names advertised by the client +// via grpc-accept-encoding header. +// +// The context provided must be the context passed to the server's handler. +// +// # Experimental +// +// Notice: This function is EXPERIMENTAL and may be changed or removed in a +// later release. +func ClientSupportedCompressors(ctx context.Context) ([]string, error) { + stream, ok := ServerTransportStreamFromContext(ctx).(*transport.Stream) + if !ok || stream == nil { + return nil, fmt.Errorf("failed to fetch the stream from the given context %v", ctx) + } + + return strings.Split(stream.ClientAdvertisedCompressors(), ","), nil +} + // SetTrailer sets the trailer metadata that will be sent when an RPC returns. // When called more than once, all the provided metadata will be merged. +// +// The error returned is compatible with the status package. However, the +// status code will often not match the RPC status as seen by the client +// application, and therefore, should not be relied upon for this purpose. func SetTrailer(ctx context.Context, md metadata.MD) error { if md.Len() == 0 { return nil @@ -1858,3 +2056,22 @@ type channelzServer struct { func (c *channelzServer) ChannelzMetric() *channelz.ServerInternalMetric { return c.s.channelzMetric() } + +// validateSendCompressor returns an error when given compressor name cannot be +// handled by the server or the client based on the advertised compressors. +func validateSendCompressor(name, clientCompressors string) error { + if name == encoding.Identity { + return nil + } + + if !grpcutil.IsCompressorNameRegistered(name) { + return fmt.Errorf("compressor not registered %q", name) + } + + for _, c := range strings.Split(clientCompressors, ",") { + if c == name { + return nil // found match + } + } + return fmt.Errorf("client does not support compressor %q", name) +} diff --git a/vendor/google.golang.org/grpc/service_config.go b/vendor/google.golang.org/grpc/service_config.go index 22c4240c..0df11fc0 100644 --- a/vendor/google.golang.org/grpc/service_config.go +++ b/vendor/google.golang.org/grpc/service_config.go @@ -23,8 +23,6 @@ import ( "errors" "fmt" "reflect" - "strconv" - "strings" "time" "google.golang.org/grpc/codes" @@ -57,10 +55,9 @@ type lbConfig struct { type ServiceConfig struct { serviceconfig.Config - // LB is the load balancer the service providers recommends. The balancer - // specified via grpc.WithBalancerName will override this. This is deprecated; - // lbConfigs is preferred. If lbConfig and LB are both present, lbConfig - // will be used. + // LB is the load balancer the service providers recommends. This is + // deprecated; lbConfigs is preferred. If lbConfig and LB are both present, + // lbConfig will be used. LB *string // lbConfig is the service config's load balancing configuration. If @@ -107,8 +104,8 @@ type healthCheckConfig struct { type jsonRetryPolicy struct { MaxAttempts int - InitialBackoff string - MaxBackoff string + InitialBackoff internalserviceconfig.Duration + MaxBackoff internalserviceconfig.Duration BackoffMultiplier float64 RetryableStatusCodes []codes.Code } @@ -130,50 +127,6 @@ type retryThrottlingPolicy struct { TokenRatio float64 } -func parseDuration(s *string) (*time.Duration, error) { - if s == nil { - return nil, nil - } - if !strings.HasSuffix(*s, "s") { - return nil, fmt.Errorf("malformed duration %q", *s) - } - ss := strings.SplitN((*s)[:len(*s)-1], ".", 3) - if len(ss) > 2 { - return nil, fmt.Errorf("malformed duration %q", *s) - } - // hasDigits is set if either the whole or fractional part of the number is - // present, since both are optional but one is required. - hasDigits := false - var d time.Duration - if len(ss[0]) > 0 { - i, err := strconv.ParseInt(ss[0], 10, 32) - if err != nil { - return nil, fmt.Errorf("malformed duration %q: %v", *s, err) - } - d = time.Duration(i) * time.Second - hasDigits = true - } - if len(ss) == 2 && len(ss[1]) > 0 { - if len(ss[1]) > 9 { - return nil, fmt.Errorf("malformed duration %q", *s) - } - f, err := strconv.ParseInt(ss[1], 10, 64) - if err != nil { - return nil, fmt.Errorf("malformed duration %q: %v", *s, err) - } - for i := 9; i > len(ss[1]); i-- { - f *= 10 - } - d += time.Duration(f) - hasDigits = true - } - if !hasDigits { - return nil, fmt.Errorf("malformed duration %q", *s) - } - - return &d, nil -} - type jsonName struct { Service string Method string @@ -202,7 +155,7 @@ func (j jsonName) generatePath() (string, error) { type jsonMC struct { Name *[]jsonName WaitForReady *bool - Timeout *string + Timeout *internalserviceconfig.Duration MaxRequestMessageBytes *int64 MaxResponseMessageBytes *int64 RetryPolicy *jsonRetryPolicy @@ -218,7 +171,7 @@ type jsonSC struct { } func init() { - internal.ParseServiceConfigForTesting = parseServiceConfig + internal.ParseServiceConfig = parseServiceConfig } func parseServiceConfig(js string) *serviceconfig.ParseResult { if len(js) == 0 { @@ -227,7 +180,7 @@ func parseServiceConfig(js string) *serviceconfig.ParseResult { var rsc jsonSC err := json.Unmarshal([]byte(js), &rsc) if err != nil { - logger.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err) + logger.Warningf("grpc: unmarshaling service config %s: %v", js, err) return &serviceconfig.ParseResult{Err: err} } sc := ServiceConfig{ @@ -253,18 +206,13 @@ func parseServiceConfig(js string) *serviceconfig.ParseResult { if m.Name == nil { continue } - d, err := parseDuration(m.Timeout) - if err != nil { - logger.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err) - return &serviceconfig.ParseResult{Err: err} - } mc := MethodConfig{ WaitForReady: m.WaitForReady, - Timeout: d, + Timeout: (*time.Duration)(m.Timeout), } if mc.RetryPolicy, err = convertRetryPolicy(m.RetryPolicy); err != nil { - logger.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err) + logger.Warningf("grpc: unmarshaling service config %s: %v", js, err) return &serviceconfig.ParseResult{Err: err} } if m.MaxRequestMessageBytes != nil { @@ -284,13 +232,13 @@ func parseServiceConfig(js string) *serviceconfig.ParseResult { for i, n := range *m.Name { path, err := n.generatePath() if err != nil { - logger.Warningf("grpc: parseServiceConfig error unmarshaling %s due to methodConfig[%d]: %v", js, i, err) + logger.Warningf("grpc: error unmarshaling service config %s due to methodConfig[%d]: %v", js, i, err) return &serviceconfig.ParseResult{Err: err} } if _, ok := paths[path]; ok { err = errDuplicatedName - logger.Warningf("grpc: parseServiceConfig error unmarshaling %s due to methodConfig[%d]: %v", js, i, err) + logger.Warningf("grpc: error unmarshaling service config %s due to methodConfig[%d]: %v", js, i, err) return &serviceconfig.ParseResult{Err: err} } paths[path] = struct{}{} @@ -313,18 +261,10 @@ func convertRetryPolicy(jrp *jsonRetryPolicy) (p *internalserviceconfig.RetryPol if jrp == nil { return nil, nil } - ib, err := parseDuration(&jrp.InitialBackoff) - if err != nil { - return nil, err - } - mb, err := parseDuration(&jrp.MaxBackoff) - if err != nil { - return nil, err - } if jrp.MaxAttempts <= 1 || - *ib <= 0 || - *mb <= 0 || + jrp.InitialBackoff <= 0 || + jrp.MaxBackoff <= 0 || jrp.BackoffMultiplier <= 0 || len(jrp.RetryableStatusCodes) == 0 { logger.Warningf("grpc: ignoring retry policy %v due to illegal configuration", jrp) @@ -333,8 +273,8 @@ func convertRetryPolicy(jrp *jsonRetryPolicy) (p *internalserviceconfig.RetryPol rp := &internalserviceconfig.RetryPolicy{ MaxAttempts: jrp.MaxAttempts, - InitialBackoff: *ib, - MaxBackoff: *mb, + InitialBackoff: time.Duration(jrp.InitialBackoff), + MaxBackoff: time.Duration(jrp.MaxBackoff), BackoffMultiplier: jrp.BackoffMultiplier, RetryableStatusCodes: make(map[codes.Code]bool), } @@ -381,6 +321,9 @@ func init() { // // If any of them is NOT *ServiceConfig, return false. func equalServiceConfig(a, b serviceconfig.Config) bool { + if a == nil && b == nil { + return true + } aa, ok := a.(*ServiceConfig) if !ok { return false diff --git a/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go b/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go index 73a2f926..35e7a20a 100644 --- a/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go +++ b/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go @@ -19,7 +19,7 @@ // Package serviceconfig defines types and methods for operating on gRPC // service configs. // -// Experimental +// # Experimental // // Notice: This package is EXPERIMENTAL and may be changed or removed in a // later release. diff --git a/vendor/google.golang.org/grpc/shared_buffer_pool.go b/vendor/google.golang.org/grpc/shared_buffer_pool.go new file mode 100644 index 00000000..c3a5a9ac --- /dev/null +++ b/vendor/google.golang.org/grpc/shared_buffer_pool.go @@ -0,0 +1,154 @@ +/* + * + * Copyright 2023 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import "sync" + +// SharedBufferPool is a pool of buffers that can be shared, resulting in +// decreased memory allocation. Currently, in gRPC-go, it is only utilized +// for parsing incoming messages. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +type SharedBufferPool interface { + // Get returns a buffer with specified length from the pool. + // + // The returned byte slice may be not zero initialized. + Get(length int) []byte + + // Put returns a buffer to the pool. + Put(*[]byte) +} + +// NewSharedBufferPool creates a simple SharedBufferPool with buckets +// of different sizes to optimize memory usage. This prevents the pool from +// wasting large amounts of memory, even when handling messages of varying sizes. +// +// # Experimental +// +// Notice: This API is EXPERIMENTAL and may be changed or removed in a +// later release. +func NewSharedBufferPool() SharedBufferPool { + return &simpleSharedBufferPool{ + pools: [poolArraySize]simpleSharedBufferChildPool{ + newBytesPool(level0PoolMaxSize), + newBytesPool(level1PoolMaxSize), + newBytesPool(level2PoolMaxSize), + newBytesPool(level3PoolMaxSize), + newBytesPool(level4PoolMaxSize), + newBytesPool(0), + }, + } +} + +// simpleSharedBufferPool is a simple implementation of SharedBufferPool. +type simpleSharedBufferPool struct { + pools [poolArraySize]simpleSharedBufferChildPool +} + +func (p *simpleSharedBufferPool) Get(size int) []byte { + return p.pools[p.poolIdx(size)].Get(size) +} + +func (p *simpleSharedBufferPool) Put(bs *[]byte) { + p.pools[p.poolIdx(cap(*bs))].Put(bs) +} + +func (p *simpleSharedBufferPool) poolIdx(size int) int { + switch { + case size <= level0PoolMaxSize: + return level0PoolIdx + case size <= level1PoolMaxSize: + return level1PoolIdx + case size <= level2PoolMaxSize: + return level2PoolIdx + case size <= level3PoolMaxSize: + return level3PoolIdx + case size <= level4PoolMaxSize: + return level4PoolIdx + default: + return levelMaxPoolIdx + } +} + +const ( + level0PoolMaxSize = 16 // 16 B + level1PoolMaxSize = level0PoolMaxSize * 16 // 256 B + level2PoolMaxSize = level1PoolMaxSize * 16 // 4 KB + level3PoolMaxSize = level2PoolMaxSize * 16 // 64 KB + level4PoolMaxSize = level3PoolMaxSize * 16 // 1 MB +) + +const ( + level0PoolIdx = iota + level1PoolIdx + level2PoolIdx + level3PoolIdx + level4PoolIdx + levelMaxPoolIdx + poolArraySize +) + +type simpleSharedBufferChildPool interface { + Get(size int) []byte + Put(interface{}) +} + +type bufferPool struct { + sync.Pool + + defaultSize int +} + +func (p *bufferPool) Get(size int) []byte { + bs := p.Pool.Get().(*[]byte) + + if cap(*bs) < size { + p.Pool.Put(bs) + + return make([]byte, size) + } + + return (*bs)[:size] +} + +func newBytesPool(size int) simpleSharedBufferChildPool { + return &bufferPool{ + Pool: sync.Pool{ + New: func() interface{} { + bs := make([]byte, size) + return &bs + }, + }, + defaultSize: size, + } +} + +// nopBufferPool is a buffer pool just makes new buffer without pooling. +type nopBufferPool struct { +} + +func (nopBufferPool) Get(length int) []byte { + return make([]byte, length) +} + +func (nopBufferPool) Put(*[]byte) { +} diff --git a/vendor/google.golang.org/grpc/stats/stats.go b/vendor/google.golang.org/grpc/stats/stats.go index 63e476ee..7a552a9b 100644 --- a/vendor/google.golang.org/grpc/stats/stats.go +++ b/vendor/google.golang.org/grpc/stats/stats.go @@ -36,15 +36,22 @@ type RPCStats interface { IsClient() bool } -// Begin contains stats when an RPC begins. +// Begin contains stats when an RPC attempt begins. // FailFast is only valid if this Begin is from client side. type Begin struct { // Client is true if this Begin is from client side. Client bool - // BeginTime is the time when the RPC begins. + // BeginTime is the time when the RPC attempt begins. BeginTime time.Time // FailFast indicates if this RPC is failfast. FailFast bool + // IsClientStream indicates whether the RPC is a client streaming RPC. + IsClientStream bool + // IsServerStream indicates whether the RPC is a server streaming RPC. + IsServerStream bool + // IsTransparentRetryAttempt indicates whether this attempt was initiated + // due to transparently retrying a previous attempt. + IsTransparentRetryAttempt bool } // IsClient indicates if the stats information is from client side. @@ -60,10 +67,18 @@ type InPayload struct { Payload interface{} // Data is the serialized message payload. Data []byte - // Length is the length of uncompressed data. + + // Length is the size of the uncompressed payload data. Does not include any + // framing (gRPC or HTTP/2). Length int - // WireLength is the length of data on wire (compressed, signed, encrypted). + // CompressedLength is the size of the compressed payload data. Does not + // include any framing (gRPC or HTTP/2). Same as Length if compression not + // enabled. + CompressedLength int + // WireLength is the size of the compressed payload data plus gRPC framing. + // Does not include HTTP/2 framing. WireLength int + // RecvTime is the time when the payload is received. RecvTime time.Time } @@ -122,9 +137,15 @@ type OutPayload struct { Payload interface{} // Data is the serialized message payload. Data []byte - // Length is the length of uncompressed data. + // Length is the size of the uncompressed payload data. Does not include any + // framing (gRPC or HTTP/2). Length int - // WireLength is the length of data on wire (compressed, signed, encrypted). + // CompressedLength is the size of the compressed payload data. Does not + // include any framing (gRPC or HTTP/2). Same as Length if compression not + // enabled. + CompressedLength int + // WireLength is the size of the compressed payload data plus gRPC framing. + // Does not include HTTP/2 framing. WireLength int // SentTime is the time when the payload is sent. SentTime time.Time diff --git a/vendor/google.golang.org/grpc/status/status.go b/vendor/google.golang.org/grpc/status/status.go index 54d18718..bcf2e4d8 100644 --- a/vendor/google.golang.org/grpc/status/status.go +++ b/vendor/google.golang.org/grpc/status/status.go @@ -29,6 +29,7 @@ package status import ( "context" + "errors" "fmt" spb "google.golang.org/genproto/googleapis/rpc/status" @@ -73,19 +74,52 @@ func FromProto(s *spb.Status) *Status { return status.FromProto(s) } -// FromError returns a Status representing err if it was produced by this -// package or has a method `GRPCStatus() *Status`. -// If err is nil, a Status is returned with codes.OK and no message. -// Otherwise, ok is false and a Status is returned with codes.Unknown and -// the original error message. +// FromError returns a Status representation of err. +// +// - If err was produced by this package or implements the method `GRPCStatus() +// *Status` and `GRPCStatus()` does not return nil, or if err wraps a type +// satisfying this, the Status from `GRPCStatus()` is returned. For wrapped +// errors, the message returned contains the entire err.Error() text and not +// just the wrapped status. In that case, ok is true. +// +// - If err is nil, a Status is returned with codes.OK and no message, and ok +// is true. +// +// - If err implements the method `GRPCStatus() *Status` and `GRPCStatus()` +// returns nil (which maps to Codes.OK), or if err wraps a type +// satisfying this, a Status is returned with codes.Unknown and err's +// Error() message, and ok is false. +// +// - Otherwise, err is an error not compatible with this package. In this +// case, a Status is returned with codes.Unknown and err's Error() message, +// and ok is false. func FromError(err error) (s *Status, ok bool) { if err == nil { return nil, true } - if se, ok := err.(interface { - GRPCStatus() *Status - }); ok { - return se.GRPCStatus(), true + type grpcstatus interface{ GRPCStatus() *Status } + if gs, ok := err.(grpcstatus); ok { + if gs.GRPCStatus() == nil { + // Error has status nil, which maps to codes.OK. There + // is no sensible behavior for this, so we turn it into + // an error with codes.Unknown and discard the existing + // status. + return New(codes.Unknown, err.Error()), false + } + return gs.GRPCStatus(), true + } + var gs grpcstatus + if errors.As(err, &gs) { + if gs.GRPCStatus() == nil { + // Error wraps an error that has status nil, which maps + // to codes.OK. There is no sensible behavior for this, + // so we turn it into an error with codes.Unknown and + // discard the existing status. + return New(codes.Unknown, err.Error()), false + } + p := gs.GRPCStatus().Proto() + p.Message = err.Error() + return status.FromProto(p), true } return New(codes.Unknown, err.Error()), false } @@ -97,33 +131,30 @@ func Convert(err error) *Status { return s } -// Code returns the Code of the error if it is a Status error, codes.OK if err -// is nil, or codes.Unknown otherwise. +// Code returns the Code of the error if it is a Status error or if it wraps a +// Status error. If that is not the case, it returns codes.OK if err is nil, or +// codes.Unknown otherwise. func Code(err error) codes.Code { // Don't use FromError to avoid allocation of OK status. if err == nil { return codes.OK } - if se, ok := err.(interface { - GRPCStatus() *Status - }); ok { - return se.GRPCStatus().Code() - } - return codes.Unknown + + return Convert(err).Code() } -// FromContextError converts a context error into a Status. It returns a -// Status with codes.OK if err is nil, or a Status with codes.Unknown if err is -// non-nil and not a context error. +// FromContextError converts a context error or wrapped context error into a +// Status. It returns a Status with codes.OK if err is nil, or a Status with +// codes.Unknown if err is non-nil and not a context error. func FromContextError(err error) *Status { - switch err { - case nil: + if err == nil { return nil - case context.DeadlineExceeded: + } + if errors.Is(err, context.DeadlineExceeded) { return New(codes.DeadlineExceeded, err.Error()) - case context.Canceled: + } + if errors.Is(err, context.Canceled) { return New(codes.Canceled, err.Error()) - default: - return New(codes.Unknown, err.Error()) } + return New(codes.Unknown, err.Error()) } diff --git a/vendor/google.golang.org/grpc/stream.go b/vendor/google.golang.org/grpc/stream.go index 1f3e70d2..de32a759 100644 --- a/vendor/google.golang.org/grpc/stream.go +++ b/vendor/google.golang.org/grpc/stream.go @@ -36,8 +36,10 @@ import ( "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/internal/grpcrand" "google.golang.org/grpc/internal/grpcutil" + imetadata "google.golang.org/grpc/internal/metadata" iresolver "google.golang.org/grpc/internal/resolver" "google.golang.org/grpc/internal/serviceconfig" + istatus "google.golang.org/grpc/internal/status" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" @@ -46,10 +48,12 @@ import ( ) // StreamHandler defines the handler called by gRPC server to complete the -// execution of a streaming RPC. If a StreamHandler returns an error, it -// should be produced by the status package, or else gRPC will use -// codes.Unknown as the status code and err.Error() as the status message -// of the RPC. +// execution of a streaming RPC. +// +// If a StreamHandler returns an error, it should either be produced by the +// status package, or be one of the context errors. Otherwise, gRPC will use +// codes.Unknown as the status code and err.Error() as the status message of the +// RPC. type StreamHandler func(srv interface{}, stream ServerStream) error // StreamDesc represents a streaming RPC service's method specification. Used @@ -119,6 +123,9 @@ type ClientStream interface { // calling RecvMsg on the same stream at the same time, but it is not safe // to call SendMsg on the same stream in different goroutines. It is also // not safe to call CloseSend concurrently with SendMsg. + // + // It is not safe to modify the message after calling SendMsg. Tracing + // libraries and stats handlers may use the message lazily. SendMsg(m interface{}) error // RecvMsg blocks until it receives a message into m or the stream is // done. It returns io.EOF when the stream completes successfully. On @@ -137,17 +144,22 @@ type ClientStream interface { // To ensure resources are not leaked due to the stream returned, one of the following // actions must be performed: // -// 1. Call Close on the ClientConn. -// 2. Cancel the context provided. -// 3. Call RecvMsg until a non-nil error is returned. A protobuf-generated -// client-streaming RPC, for instance, might use the helper function -// CloseAndRecv (note that CloseSend does not Recv, therefore is not -// guaranteed to release all resources). -// 4. Receive a non-nil, non-io.EOF error from Header or SendMsg. +// 1. Call Close on the ClientConn. +// 2. Cancel the context provided. +// 3. Call RecvMsg until a non-nil error is returned. A protobuf-generated +// client-streaming RPC, for instance, might use the helper function +// CloseAndRecv (note that CloseSend does not Recv, therefore is not +// guaranteed to release all resources). +// 4. Receive a non-nil, non-io.EOF error from Header or SendMsg. // // If none of the above happen, a goroutine and a context will be leaked, and grpc // will not call the optionally-configured stats handler with a stats.End message. func (cc *ClientConn) NewStream(ctx context.Context, desc *StreamDesc, method string, opts ...CallOption) (ClientStream, error) { + if err := cc.idlenessMgr.onCallBegin(); err != nil { + return nil, err + } + defer cc.idlenessMgr.onCallEnd() + // allow interceptor to see all applicable call options, which means those // configured as defaults from dial option as well as per-call options opts = combine(cc.dopts.callOptions, opts) @@ -164,6 +176,20 @@ func NewClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth } func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (_ ClientStream, err error) { + if md, added, ok := metadata.FromOutgoingContextRaw(ctx); ok { + // validate md + if err := imetadata.Validate(md); err != nil { + return nil, status.Error(codes.Internal, err.Error()) + } + // validate added + for _, kvs := range added { + for i := 0; i < len(kvs); i += 2 { + if err := imetadata.ValidatePair(kvs[i], kvs[i+1]); err != nil { + return nil, status.Error(codes.Internal, err.Error()) + } + } + } + } if channelz.IsOn() { cc.incrCallsStarted() defer func() { @@ -187,6 +213,13 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth rpcInfo := iresolver.RPCInfo{Context: ctx, Method: method} rpcConfig, err := cc.safeConfigSelector.SelectConfig(rpcInfo) if err != nil { + if st, ok := status.FromError(err); ok { + // Restrict the code to the list allowed by gRFC A54. + if istatus.IsRestrictedControlPlaneCode(st) { + err = status.Errorf(codes.Internal, "config selector returned illegal status: %v", err) + } + return nil, err + } return nil, toRPCErr(err) } @@ -274,33 +307,6 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client if c.creds != nil { callHdr.Creds = c.creds } - var trInfo *traceInfo - if EnableTracing { - trInfo = &traceInfo{ - tr: trace.New("grpc.Sent."+methodFamily(method), method), - firstLine: firstLine{ - client: true, - }, - } - if deadline, ok := ctx.Deadline(); ok { - trInfo.firstLine.deadline = time.Until(deadline) - } - trInfo.tr.LazyLog(&trInfo.firstLine, false) - ctx = trace.NewContext(ctx, trInfo.tr) - } - ctx = newContextWithRPCInfo(ctx, c.failFast, c.codec, cp, comp) - sh := cc.dopts.copts.StatsHandler - var beginTime time.Time - if sh != nil { - ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: c.failFast}) - beginTime = time.Now() - begin := &stats.Begin{ - Client: true, - BeginTime: beginTime, - FailFast: c.failFast, - } - sh.HandleRPC(ctx, begin) - } cs := &clientStream{ callHdr: callHdr, @@ -314,29 +320,41 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client cp: cp, comp: comp, cancel: cancel, - beginTime: beginTime, firstAttempt: true, onCommit: onCommit, } if !cc.dopts.disableRetry { cs.retryThrottler = cc.retryThrottler.Load().(*retryThrottler) } - cs.binlog = binarylog.GetMethodLogger(method) - - // Only this initial attempt has stats/tracing. - // TODO(dfawley): move to newAttempt when per-attempt stats are implemented. - if err := cs.newAttemptLocked(sh, trInfo); err != nil { - cs.finish(err) - return nil, err + if ml := binarylog.GetMethodLogger(method); ml != nil { + cs.binlogs = append(cs.binlogs, ml) + } + if cc.dopts.binaryLogger != nil { + if ml := cc.dopts.binaryLogger.GetMethodLogger(method); ml != nil { + cs.binlogs = append(cs.binlogs, ml) + } } - op := func(a *csAttempt) error { return a.newStream() } + // Pick the transport to use and create a new stream on the transport. + // Assign cs.attempt upon success. + op := func(a *csAttempt) error { + if err := a.getTransport(); err != nil { + return err + } + if err := a.newStream(); err != nil { + return err + } + // Because this operation is always called either here (while creating + // the clientStream) or by the retry code while locked when replaying + // the operation, it is safe to access cs.attempt directly. + cs.attempt = a + return nil + } if err := cs.withRetry(op, func() { cs.bufferForRetryLocked(0, op) }); err != nil { - cs.finish(err) return nil, err } - if cs.binlog != nil { + if len(cs.binlogs) != 0 { md, _ := metadata.FromOutgoingContext(ctx) logEntry := &binarylog.ClientHeader{ OnClientSide: true, @@ -350,7 +368,9 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client logEntry.Timeout = 0 } } - cs.binlog.Log(logEntry) + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, logEntry) + } } if desc != unaryStreamDesc { @@ -371,63 +391,123 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client return cs, nil } -// newAttemptLocked creates a new attempt with a transport. -// If it succeeds, then it replaces clientStream's attempt with this new attempt. -func (cs *clientStream) newAttemptLocked(sh stats.Handler, trInfo *traceInfo) (retErr error) { - newAttempt := &csAttempt{ - cs: cs, - dc: cs.cc.dopts.dc, - statsHandler: sh, - trInfo: trInfo, +// newAttemptLocked creates a new csAttempt without a transport or stream. +func (cs *clientStream) newAttemptLocked(isTransparent bool) (*csAttempt, error) { + if err := cs.ctx.Err(); err != nil { + return nil, toRPCErr(err) } - defer func() { - if retErr != nil { - // This attempt is not set in the clientStream, so it's finish won't - // be called. Call it here for stats and trace in case they are not - // nil. - newAttempt.finish(retErr) + if err := cs.cc.ctx.Err(); err != nil { + return nil, ErrClientConnClosing + } + + ctx := newContextWithRPCInfo(cs.ctx, cs.callInfo.failFast, cs.callInfo.codec, cs.cp, cs.comp) + method := cs.callHdr.Method + var beginTime time.Time + shs := cs.cc.dopts.copts.StatsHandlers + for _, sh := range shs { + ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: cs.callInfo.failFast}) + beginTime = time.Now() + begin := &stats.Begin{ + Client: true, + BeginTime: beginTime, + FailFast: cs.callInfo.failFast, + IsClientStream: cs.desc.ClientStreams, + IsServerStream: cs.desc.ServerStreams, + IsTransparentRetryAttempt: isTransparent, } - }() + sh.HandleRPC(ctx, begin) + } - if err := cs.ctx.Err(); err != nil { - return toRPCErr(err) + var trInfo *traceInfo + if EnableTracing { + trInfo = &traceInfo{ + tr: trace.New("grpc.Sent."+methodFamily(method), method), + firstLine: firstLine{ + client: true, + }, + } + if deadline, ok := ctx.Deadline(); ok { + trInfo.firstLine.deadline = time.Until(deadline) + } + trInfo.tr.LazyLog(&trInfo.firstLine, false) + ctx = trace.NewContext(ctx, trInfo.tr) } - ctx := cs.ctx - if cs.cc.parsedTarget.Scheme == "xds" { + if cs.cc.parsedTarget.URL.Scheme == "xds" { // Add extra metadata (metadata that will be added by transport) to context // so the balancer can see them. - ctx = grpcutil.WithExtraMetadata(cs.ctx, metadata.Pairs( + ctx = grpcutil.WithExtraMetadata(ctx, metadata.Pairs( "content-type", grpcutil.ContentType(cs.callHdr.ContentSubtype), )) } - t, done, err := cs.cc.getTransport(ctx, cs.callInfo.failFast, cs.callHdr.Method) + + return &csAttempt{ + ctx: ctx, + beginTime: beginTime, + cs: cs, + dc: cs.cc.dopts.dc, + statsHandlers: shs, + trInfo: trInfo, + }, nil +} + +func (a *csAttempt) getTransport() error { + cs := a.cs + + var err error + a.t, a.pickResult, err = cs.cc.getTransport(a.ctx, cs.callInfo.failFast, cs.callHdr.Method) if err != nil { + if de, ok := err.(dropError); ok { + err = de.error + a.drop = true + } return err } - if trInfo != nil { - trInfo.firstLine.SetRemoteAddr(t.RemoteAddr()) + if a.trInfo != nil { + a.trInfo.firstLine.SetRemoteAddr(a.t.RemoteAddr()) } - newAttempt.t = t - newAttempt.done = done - cs.attempt = newAttempt return nil } func (a *csAttempt) newStream() error { cs := a.cs cs.callHdr.PreviousAttempts = cs.numRetries - s, err := a.t.NewStream(cs.ctx, cs.callHdr) + + // Merge metadata stored in PickResult, if any, with existing call metadata. + // It is safe to overwrite the csAttempt's context here, since all state + // maintained in it are local to the attempt. When the attempt has to be + // retried, a new instance of csAttempt will be created. + if a.pickResult.Metadata != nil { + // We currently do not have a function it the metadata package which + // merges given metadata with existing metadata in a context. Existing + // function `AppendToOutgoingContext()` takes a variadic argument of key + // value pairs. + // + // TODO: Make it possible to retrieve key value pairs from metadata.MD + // in a form passable to AppendToOutgoingContext(), or create a version + // of AppendToOutgoingContext() that accepts a metadata.MD. + md, _ := metadata.FromOutgoingContext(a.ctx) + md = metadata.Join(md, a.pickResult.Metadata) + a.ctx = metadata.NewOutgoingContext(a.ctx, md) + } + + s, err := a.t.NewStream(a.ctx, cs.callHdr) if err != nil { - if _, ok := err.(transport.PerformedIOError); ok { - // Return without converting to an RPC error so retry code can - // inspect. + nse, ok := err.(*transport.NewStreamError) + if !ok { + // Unexpected. return err } - return toRPCErr(err) + + if nse.AllowTransparentRetry { + a.allowTransparentRetry = true + } + + // Unwrap and convert error. + return toRPCErr(nse.Err) } - cs.attempt.s = s - cs.attempt.p = &parser{r: s} + a.s = s + a.p = &parser{r: s, recvBufferPool: a.cs.cc.dopts.recvBufferPool} return nil } @@ -445,8 +525,7 @@ type clientStream struct { cancel context.CancelFunc // cancels all attempts - sentLast bool // sent an end stream - beginTime time.Time + sentLast bool // sent an end stream methodConfig *MethodConfig @@ -454,7 +533,7 @@ type clientStream struct { retryThrottler *retryThrottler // The throttler active when the RPC began. - binlog *binarylog.MethodLogger // Binary logger, can be nil. + binlogs []binarylog.MethodLogger // serverHeaderBinlogged is a boolean for whether server header has been // logged. Server header will be logged when the first time one of those // happens: stream.Header(), stream.Recv(). @@ -486,11 +565,12 @@ type clientStream struct { // csAttempt implements a single transport stream attempt within a // clientStream. type csAttempt struct { - cs *clientStream - t transport.ClientTransport - s *transport.Stream - p *parser - done func(balancer.DoneInfo) + ctx context.Context + cs *clientStream + t transport.ClientTransport + s *transport.Stream + p *parser + pickResult balancer.PickResult finished bool dc Decompressor @@ -503,7 +583,13 @@ type csAttempt struct { // and cleared when the finish method is called. trInfo *traceInfo - statsHandler stats.Handler + statsHandlers []stats.Handler + beginTime time.Time + + // set for newStream errors that may be transparently retried + allowTransparentRetry bool + // set for pick errors that are returned as a status + drop bool } func (cs *clientStream) commitAttemptLocked() { @@ -521,85 +607,76 @@ func (cs *clientStream) commitAttempt() { } // shouldRetry returns nil if the RPC should be retried; otherwise it returns -// the error that should be returned by the operation. -func (cs *clientStream) shouldRetry(err error) error { - unprocessed := false - if cs.attempt.s == nil { - pioErr, ok := err.(transport.PerformedIOError) - if ok { - // Unwrap error. - err = toRPCErr(pioErr.Err) - } else { - unprocessed = true - } - if !ok && !cs.callInfo.failFast { - // In the event of a non-IO operation error from NewStream, we - // never attempted to write anything to the wire, so we can retry - // indefinitely for non-fail-fast RPCs. - return nil - } +// the error that should be returned by the operation. If the RPC should be +// retried, the bool indicates whether it is being retried transparently. +func (a *csAttempt) shouldRetry(err error) (bool, error) { + cs := a.cs + + if cs.finished || cs.committed || a.drop { + // RPC is finished or committed or was dropped by the picker; cannot retry. + return false, err } - if cs.finished || cs.committed { - // RPC is finished or committed; cannot retry. - return err + if a.s == nil && a.allowTransparentRetry { + return true, nil } // Wait for the trailers. - if cs.attempt.s != nil { - <-cs.attempt.s.Done() - unprocessed = cs.attempt.s.Unprocessed() + unprocessed := false + if a.s != nil { + <-a.s.Done() + unprocessed = a.s.Unprocessed() } if cs.firstAttempt && unprocessed { // First attempt, stream unprocessed: transparently retry. - return nil + return true, nil } if cs.cc.dopts.disableRetry { - return err + return false, err } pushback := 0 hasPushback := false - if cs.attempt.s != nil { - if !cs.attempt.s.TrailersOnly() { - return err + if a.s != nil { + if !a.s.TrailersOnly() { + return false, err } // TODO(retry): Move down if the spec changes to not check server pushback // before considering this a failure for throttling. - sps := cs.attempt.s.Trailer()["grpc-retry-pushback-ms"] + sps := a.s.Trailer()["grpc-retry-pushback-ms"] if len(sps) == 1 { var e error if pushback, e = strconv.Atoi(sps[0]); e != nil || pushback < 0 { channelz.Infof(logger, cs.cc.channelzID, "Server retry pushback specified to abort (%q).", sps[0]) cs.retryThrottler.throttle() // This counts as a failure for throttling. - return err + return false, err } hasPushback = true } else if len(sps) > 1 { channelz.Warningf(logger, cs.cc.channelzID, "Server retry pushback specified multiple values (%q); not retrying.", sps) cs.retryThrottler.throttle() // This counts as a failure for throttling. - return err + return false, err } } var code codes.Code - if cs.attempt.s != nil { - code = cs.attempt.s.Status().Code() + if a.s != nil { + code = a.s.Status().Code() } else { - code = status.Convert(err).Code() + code = status.Code(err) } rp := cs.methodConfig.RetryPolicy if rp == nil || !rp.RetryableStatusCodes[code] { - return err + return false, err } // Note: the ordering here is important; we count this as a failure // only if the code matched a retryable code. if cs.retryThrottler.throttle() { - return err + return false, err } if cs.numRetries+1 >= rp.MaxAttempts { - return err + return false, err } var dur time.Duration @@ -622,26 +699,32 @@ func (cs *clientStream) shouldRetry(err error) error { select { case <-t.C: cs.numRetries++ - return nil + return false, nil case <-cs.ctx.Done(): t.Stop() - return status.FromContextError(cs.ctx.Err()).Err() + return false, status.FromContextError(cs.ctx.Err()).Err() } } // Returns nil if a retry was performed and succeeded; error otherwise. -func (cs *clientStream) retryLocked(lastErr error) error { +func (cs *clientStream) retryLocked(attempt *csAttempt, lastErr error) error { for { - cs.attempt.finish(lastErr) - if err := cs.shouldRetry(lastErr); err != nil { + attempt.finish(toRPCErr(lastErr)) + isTransparent, err := attempt.shouldRetry(lastErr) + if err != nil { cs.commitAttemptLocked() return err } cs.firstAttempt = false - if err := cs.newAttemptLocked(nil, nil); err != nil { + attempt, err = cs.newAttemptLocked(isTransparent) + if err != nil { + // Only returns error if the clientconn is closed or the context of + // the stream is canceled. return err } - if lastErr = cs.replayBufferLocked(); lastErr == nil { + // Note that the first op in the replay buffer always sets cs.attempt + // if it is able to pick a transport and create a stream. + if lastErr = cs.replayBufferLocked(attempt); lastErr == nil { return nil } } @@ -651,7 +734,10 @@ func (cs *clientStream) Context() context.Context { cs.commitAttempt() // No need to lock before using attempt, since we know it is committed and // cannot change. - return cs.attempt.s.Context() + if cs.attempt.s != nil { + return cs.attempt.s.Context() + } + return cs.ctx } func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func()) error { @@ -659,7 +745,23 @@ func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func()) for { if cs.committed { cs.mu.Unlock() - return op(cs.attempt) + // toRPCErr is used in case the error from the attempt comes from + // NewClientStream, which intentionally doesn't return a status + // error to allow for further inspection; all other errors should + // already be status errors. + return toRPCErr(op(cs.attempt)) + } + if len(cs.buffer) == 0 { + // For the first op, which controls creation of the stream and + // assigns cs.attempt, we need to create a new attempt inline + // before executing the first op. On subsequent ops, the attempt + // is created immediately before replaying the ops. + var err error + if cs.attempt, err = cs.newAttemptLocked(false /* isTransparent */); err != nil { + cs.mu.Unlock() + cs.finish(err) + return err + } } a := cs.attempt cs.mu.Unlock() @@ -677,7 +779,7 @@ func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func()) cs.mu.Unlock() return err } - if err := cs.retryLocked(err); err != nil { + if err := cs.retryLocked(a, err); err != nil { cs.mu.Unlock() return err } @@ -686,17 +788,25 @@ func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func()) func (cs *clientStream) Header() (metadata.MD, error) { var m metadata.MD + noHeader := false err := cs.withRetry(func(a *csAttempt) error { var err error m, err = a.s.Header() + if err == transport.ErrNoHeaders { + noHeader = true + return nil + } return toRPCErr(err) }, cs.commitAttemptLocked) + if err != nil { cs.finish(err) return nil, err } - if cs.binlog != nil && !cs.serverHeaderBinlogged { - // Only log if binary log is on and header has not been logged. + + if len(cs.binlogs) != 0 && !cs.serverHeaderBinlogged && !noHeader { + // Only log if binary log is on and header has not been logged, and + // there is actually headers to log. logEntry := &binarylog.ServerHeader{ OnClientSide: true, Header: m, @@ -705,10 +815,12 @@ func (cs *clientStream) Header() (metadata.MD, error) { if peer, ok := peer.FromContext(cs.Context()); ok { logEntry.PeerAddr = peer.Addr } - cs.binlog.Log(logEntry) cs.serverHeaderBinlogged = true + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, logEntry) + } } - return m, err + return m, nil } func (cs *clientStream) Trailer() metadata.MD { @@ -726,10 +838,9 @@ func (cs *clientStream) Trailer() metadata.MD { return cs.attempt.s.Trailer() } -func (cs *clientStream) replayBufferLocked() error { - a := cs.attempt +func (cs *clientStream) replayBufferLocked(attempt *csAttempt) error { for _, f := range cs.buffer { - if err := f(a); err != nil { + if err := f(attempt); err != nil { return err } } @@ -777,47 +888,48 @@ func (cs *clientStream) SendMsg(m interface{}) (err error) { if len(payload) > *cs.callInfo.maxSendMessageSize { return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), *cs.callInfo.maxSendMessageSize) } - msgBytes := data // Store the pointer before setting to nil. For binary logging. op := func(a *csAttempt) error { - err := a.sendMsg(m, hdr, payload, data) - // nil out the message and uncomp when replaying; they are only needed for - // stats which is disabled for subsequent attempts. - m, data = nil, nil - return err + return a.sendMsg(m, hdr, payload, data) } err = cs.withRetry(op, func() { cs.bufferForRetryLocked(len(hdr)+len(payload), op) }) - if cs.binlog != nil && err == nil { - cs.binlog.Log(&binarylog.ClientMessage{ + if len(cs.binlogs) != 0 && err == nil { + cm := &binarylog.ClientMessage{ OnClientSide: true, - Message: msgBytes, - }) + Message: data, + } + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, cm) + } } - return + return err } func (cs *clientStream) RecvMsg(m interface{}) error { - if cs.binlog != nil && !cs.serverHeaderBinlogged { + if len(cs.binlogs) != 0 && !cs.serverHeaderBinlogged { // Call Header() to binary log header if it's not already logged. cs.Header() } var recvInfo *payloadInfo - if cs.binlog != nil { + if len(cs.binlogs) != 0 { recvInfo = &payloadInfo{} } err := cs.withRetry(func(a *csAttempt) error { return a.recvMsg(m, recvInfo) }, cs.commitAttemptLocked) - if cs.binlog != nil && err == nil { - cs.binlog.Log(&binarylog.ServerMessage{ + if len(cs.binlogs) != 0 && err == nil { + sm := &binarylog.ServerMessage{ OnClientSide: true, Message: recvInfo.uncompressedBytes, - }) + } + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, sm) + } } if err != nil || !cs.desc.ServerStreams { // err != nil or non-server-streaming indicates end of stream. cs.finish(err) - if cs.binlog != nil { + if len(cs.binlogs) != 0 { // finish will not log Trailer. Log Trailer here. logEntry := &binarylog.ServerTrailer{ OnClientSide: true, @@ -830,7 +942,9 @@ func (cs *clientStream) RecvMsg(m interface{}) error { if peer, ok := peer.FromContext(cs.Context()); ok { logEntry.PeerAddr = peer.Addr } - cs.binlog.Log(logEntry) + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, logEntry) + } } } return err @@ -851,10 +965,13 @@ func (cs *clientStream) CloseSend() error { return nil } cs.withRetry(op, func() { cs.bufferForRetryLocked(0, op) }) - if cs.binlog != nil { - cs.binlog.Log(&binarylog.ClientHalfClose{ + if len(cs.binlogs) != 0 { + chc := &binarylog.ClientHalfClose{ OnClientSide: true, - }) + } + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, chc) + } } // We never returned an error here for reasons. return nil @@ -871,6 +988,9 @@ func (cs *clientStream) finish(err error) { return } cs.finished = true + for _, onFinish := range cs.callInfo.onFinish { + onFinish(err) + } cs.commitAttemptLocked() if cs.attempt != nil { cs.attempt.finish(err) @@ -887,10 +1007,13 @@ func (cs *clientStream) finish(err error) { // // Only one of cancel or trailer needs to be logged. In the cases where // users don't call RecvMsg, users must have already canceled the RPC. - if cs.binlog != nil && status.Code(err) == codes.Canceled { - cs.binlog.Log(&binarylog.Cancel{ + if len(cs.binlogs) != 0 && status.Code(err) == codes.Canceled { + c := &binarylog.Cancel{ OnClientSide: true, - }) + } + for _, binlog := range cs.binlogs { + binlog.Log(cs.ctx, c) + } } if err == nil { cs.retryThrottler.successfulRPC() @@ -923,8 +1046,8 @@ func (a *csAttempt) sendMsg(m interface{}, hdr, payld, data []byte) error { } return io.EOF } - if a.statsHandler != nil { - a.statsHandler.HandleRPC(cs.ctx, outPayload(true, m, data, payld, time.Now())) + for _, sh := range a.statsHandlers { + sh.HandleRPC(a.ctx, outPayload(true, m, data, payld, time.Now())) } if channelz.IsOn() { a.t.IncrMsgSent() @@ -934,7 +1057,7 @@ func (a *csAttempt) sendMsg(m interface{}, hdr, payld, data []byte) error { func (a *csAttempt) recvMsg(m interface{}, payInfo *payloadInfo) (err error) { cs := a.cs - if a.statsHandler != nil && payInfo == nil { + if len(a.statsHandlers) != 0 && payInfo == nil { payInfo = &payloadInfo{} } @@ -962,6 +1085,7 @@ func (a *csAttempt) recvMsg(m interface{}, payInfo *payloadInfo) (err error) { } return io.EOF // indicates successful end of stream. } + return toRPCErr(err) } if a.trInfo != nil { @@ -971,15 +1095,16 @@ func (a *csAttempt) recvMsg(m interface{}, payInfo *payloadInfo) (err error) { } a.mu.Unlock() } - if a.statsHandler != nil { - a.statsHandler.HandleRPC(cs.ctx, &stats.InPayload{ + for _, sh := range a.statsHandlers { + sh.HandleRPC(a.ctx, &stats.InPayload{ Client: true, RecvTime: time.Now(), Payload: m, // TODO truncate large payload. - Data: payInfo.uncompressedBytes, - WireLength: payInfo.wireLength + headerLen, - Length: len(payInfo.uncompressedBytes), + Data: payInfo.uncompressedBytes, + WireLength: payInfo.compressedLength + headerLen, + CompressedLength: payInfo.compressedLength, + Length: len(payInfo.uncompressedBytes), }) } if channelz.IsOn() { @@ -1018,12 +1143,12 @@ func (a *csAttempt) finish(err error) { tr = a.s.Trailer() } - if a.done != nil { + if a.pickResult.Done != nil { br := false if a.s != nil { br = a.s.BytesReceived() } - a.done(balancer.DoneInfo{ + a.pickResult.Done(balancer.DoneInfo{ Err: err, Trailer: tr, BytesSent: a.s != nil, @@ -1031,15 +1156,15 @@ func (a *csAttempt) finish(err error) { ServerLoad: balancerload.Parse(tr), }) } - if a.statsHandler != nil { + for _, sh := range a.statsHandlers { end := &stats.End{ Client: true, - BeginTime: a.cs.beginTime, + BeginTime: a.beginTime, EndTime: time.Now(), Trailer: tr, Error: err, } - a.statsHandler.HandleRPC(a.cs.ctx, end) + sh.HandleRPC(a.ctx, end) } if a.trInfo != nil && a.trInfo.tr != nil { if err == nil { @@ -1145,17 +1270,22 @@ func newNonRetryClientStream(ctx context.Context, desc *StreamDesc, method strin return nil, err } as.s = s - as.p = &parser{r: s} + as.p = &parser{r: s, recvBufferPool: ac.dopts.recvBufferPool} ac.incrCallsStarted() if desc != unaryStreamDesc { - // Listen on cc and stream contexts to cleanup when the user closes the - // ClientConn or cancels the stream context. In all other cases, an error - // should already be injected into the recv buffer by the transport, which - // the client will eventually receive, and then we will cancel the stream's - // context in clientStream.finish. + // Listen on stream context to cleanup when the stream context is + // canceled. Also listen for the addrConn's context in case the + // addrConn is closed or reconnects to a different address. In all + // other cases, an error should already be injected into the recv + // buffer by the transport, which the client will eventually receive, + // and then we will cancel the stream's context in + // addrConnStream.finish. go func() { + ac.mu.Lock() + acCtx := ac.ctx + ac.mu.Unlock() select { - case <-ac.ctx.Done(): + case <-acCtx.Done(): as.finish(status.Error(codes.Canceled, "grpc: the SubConn is closing")) case <-ctx.Done(): as.finish(toRPCErr(ctx.Err())) @@ -1344,8 +1474,10 @@ func (as *addrConnStream) finish(err error) { // ServerStream defines the server-side behavior of a streaming RPC. // -// All errors returned from ServerStream methods are compatible with the -// status package. +// Errors returned from ServerStream methods are compatible with the status +// package. However, the status code will often not match the RPC status as +// seen by the client application, and therefore, should not be relied upon for +// this purpose. type ServerStream interface { // SetHeader sets the header metadata. It may be called multiple times. // When call multiple times, all the provided metadata will be merged. @@ -1377,6 +1509,9 @@ type ServerStream interface { // It is safe to have a goroutine calling SendMsg and another goroutine // calling RecvMsg on the same stream at the same time, but it is not safe // to call SendMsg on the same stream in different goroutines. + // + // It is not safe to modify the message after calling SendMsg. Tracing + // libraries and stats handlers may use the message lazily. SendMsg(m interface{}) error // RecvMsg blocks until it receives a message into m or the stream is // done. It returns io.EOF when the client has performed a CloseSend. On @@ -1402,13 +1537,15 @@ type serverStream struct { comp encoding.Compressor decomp encoding.Compressor + sendCompressorName string + maxReceiveMessageSize int maxSendMessageSize int trInfo *traceInfo - statsHandler stats.Handler + statsHandler []stats.Handler - binlog *binarylog.MethodLogger + binlogs []binarylog.MethodLogger // serverHeaderBinlogged indicates whether server header has been logged. It // will happen when one of the following two happens: stream.SendHeader(), // stream.Send(). @@ -1428,17 +1565,29 @@ func (ss *serverStream) SetHeader(md metadata.MD) error { if md.Len() == 0 { return nil } + err := imetadata.Validate(md) + if err != nil { + return status.Error(codes.Internal, err.Error()) + } return ss.s.SetHeader(md) } func (ss *serverStream) SendHeader(md metadata.MD) error { - err := ss.t.WriteHeader(ss.s, md) - if ss.binlog != nil && !ss.serverHeaderBinlogged { + err := imetadata.Validate(md) + if err != nil { + return status.Error(codes.Internal, err.Error()) + } + + err = ss.t.WriteHeader(ss.s, md) + if len(ss.binlogs) != 0 && !ss.serverHeaderBinlogged { h, _ := ss.s.Header() - ss.binlog.Log(&binarylog.ServerHeader{ + sh := &binarylog.ServerHeader{ Header: h, - }) + } ss.serverHeaderBinlogged = true + for _, binlog := range ss.binlogs { + binlog.Log(ss.ctx, sh) + } } return err } @@ -1447,6 +1596,9 @@ func (ss *serverStream) SetTrailer(md metadata.MD) { if md.Len() == 0 { return } + if err := imetadata.Validate(md); err != nil { + logger.Errorf("stream: failed to validate md when setting trailer, err: %v", err) + } ss.s.SetTrailer(md) } @@ -1479,6 +1631,13 @@ func (ss *serverStream) SendMsg(m interface{}) (err error) { } }() + // Server handler could have set new compressor by calling SetSendCompressor. + // In case it is set, we need to use it for compressing outbound message. + if sendCompressorsName := ss.s.SendCompress(); sendCompressorsName != ss.sendCompressorName { + ss.comp = encoding.GetCompressor(sendCompressorsName) + ss.sendCompressorName = sendCompressorsName + } + // load hdr, payload, data hdr, payload, data, err := prepareMsg(m, ss.codec, ss.cp, ss.comp) if err != nil { @@ -1492,20 +1651,28 @@ func (ss *serverStream) SendMsg(m interface{}) (err error) { if err := ss.t.Write(ss.s, hdr, payload, &transport.Options{Last: false}); err != nil { return toRPCErr(err) } - if ss.binlog != nil { + if len(ss.binlogs) != 0 { if !ss.serverHeaderBinlogged { h, _ := ss.s.Header() - ss.binlog.Log(&binarylog.ServerHeader{ + sh := &binarylog.ServerHeader{ Header: h, - }) + } ss.serverHeaderBinlogged = true + for _, binlog := range ss.binlogs { + binlog.Log(ss.ctx, sh) + } } - ss.binlog.Log(&binarylog.ServerMessage{ + sm := &binarylog.ServerMessage{ Message: data, - }) + } + for _, binlog := range ss.binlogs { + binlog.Log(ss.ctx, sm) + } } - if ss.statsHandler != nil { - ss.statsHandler.HandleRPC(ss.s.Context(), outPayload(false, m, data, payload, time.Now())) + if len(ss.statsHandler) != 0 { + for _, sh := range ss.statsHandler { + sh.HandleRPC(ss.s.Context(), outPayload(false, m, data, payload, time.Now())) + } } return nil } @@ -1539,13 +1706,16 @@ func (ss *serverStream) RecvMsg(m interface{}) (err error) { } }() var payInfo *payloadInfo - if ss.statsHandler != nil || ss.binlog != nil { + if len(ss.statsHandler) != 0 || len(ss.binlogs) != 0 { payInfo = &payloadInfo{} } if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxReceiveMessageSize, payInfo, ss.decomp); err != nil { if err == io.EOF { - if ss.binlog != nil { - ss.binlog.Log(&binarylog.ClientHalfClose{}) + if len(ss.binlogs) != 0 { + chc := &binarylog.ClientHalfClose{} + for _, binlog := range ss.binlogs { + binlog.Log(ss.ctx, chc) + } } return err } @@ -1554,20 +1724,26 @@ func (ss *serverStream) RecvMsg(m interface{}) (err error) { } return toRPCErr(err) } - if ss.statsHandler != nil { - ss.statsHandler.HandleRPC(ss.s.Context(), &stats.InPayload{ - RecvTime: time.Now(), - Payload: m, - // TODO truncate large payload. - Data: payInfo.uncompressedBytes, - WireLength: payInfo.wireLength + headerLen, - Length: len(payInfo.uncompressedBytes), - }) + if len(ss.statsHandler) != 0 { + for _, sh := range ss.statsHandler { + sh.HandleRPC(ss.s.Context(), &stats.InPayload{ + RecvTime: time.Now(), + Payload: m, + // TODO truncate large payload. + Data: payInfo.uncompressedBytes, + Length: len(payInfo.uncompressedBytes), + WireLength: payInfo.compressedLength + headerLen, + CompressedLength: payInfo.compressedLength, + }) + } } - if ss.binlog != nil { - ss.binlog.Log(&binarylog.ClientMessage{ + if len(ss.binlogs) != 0 { + cm := &binarylog.ClientMessage{ Message: payInfo.uncompressedBytes, - }) + } + for _, binlog := range ss.binlogs { + binlog.Log(ss.ctx, cm) + } } return nil } diff --git a/vendor/google.golang.org/grpc/tap/tap.go b/vendor/google.golang.org/grpc/tap/tap.go index dbf34e6b..bfa5dfa4 100644 --- a/vendor/google.golang.org/grpc/tap/tap.go +++ b/vendor/google.golang.org/grpc/tap/tap.go @@ -19,7 +19,7 @@ // Package tap defines the function handles which are executed on the transport // layer of gRPC-Go and related information. // -// Experimental +// # Experimental // // Notice: This API is EXPERIMENTAL and may be changed or removed in a // later release. diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go index bfe5cf88..353cfd52 100644 --- a/vendor/google.golang.org/grpc/version.go +++ b/vendor/google.golang.org/grpc/version.go @@ -19,4 +19,4 @@ package grpc // Version is the current grpc version. -const Version = "1.38.0" +const Version = "1.57.0" diff --git a/vendor/google.golang.org/grpc/vet.sh b/vendor/google.golang.org/grpc/vet.sh index 1a0dbd7e..a8e4732b 100644 --- a/vendor/google.golang.org/grpc/vet.sh +++ b/vendor/google.golang.org/grpc/vet.sh @@ -32,37 +32,17 @@ PATH="${HOME}/go/bin:${GOROOT}/bin:${PATH}" go version if [[ "$1" = "-install" ]]; then - # Check for module support - if go help mod >& /dev/null; then - # Install the pinned versions as defined in module tools. - pushd ./test/tools - go install \ - golang.org/x/lint/golint \ - golang.org/x/tools/cmd/goimports \ - honnef.co/go/tools/cmd/staticcheck \ - github.com/client9/misspell/cmd/misspell - popd - else - # Ye olde `go get` incantation. - # Note: this gets the latest version of all tools (vs. the pinned versions - # with Go modules). - go get -u \ - golang.org/x/lint/golint \ - golang.org/x/tools/cmd/goimports \ - honnef.co/go/tools/cmd/staticcheck \ - github.com/client9/misspell/cmd/misspell - fi + # Install the pinned versions as defined in module tools. + pushd ./test/tools + go install \ + golang.org/x/lint/golint \ + golang.org/x/tools/cmd/goimports \ + honnef.co/go/tools/cmd/staticcheck \ + github.com/client9/misspell/cmd/misspell + popd if [[ -z "${VET_SKIP_PROTO}" ]]; then - if [[ "${TRAVIS}" = "true" ]]; then - PROTOBUF_VERSION=3.14.0 - PROTOC_FILENAME=protoc-${PROTOBUF_VERSION}-linux-x86_64.zip - pushd /home/travis - wget https://github.com/google/protobuf/releases/download/v${PROTOBUF_VERSION}/${PROTOC_FILENAME} - unzip ${PROTOC_FILENAME} - bin/protoc --version - popd - elif [[ "${GITHUB_ACTIONS}" = "true" ]]; then - PROTOBUF_VERSION=3.14.0 + if [[ "${GITHUB_ACTIONS}" = "true" ]]; then + PROTOBUF_VERSION=22.0 # a.k.a v4.22.0 in pb.go files. PROTOC_FILENAME=protoc-${PROTOBUF_VERSION}-linux-x86_64.zip pushd /home/runner/go wget https://github.com/google/protobuf/releases/download/v${PROTOBUF_VERSION}/${PROTOC_FILENAME} @@ -78,8 +58,20 @@ elif [[ "$#" -ne 0 ]]; then die "Unknown argument(s): $*" fi +# - Check that generated proto files are up to date. +if [[ -z "${VET_SKIP_PROTO}" ]]; then + make proto && git status --porcelain 2>&1 | fail_on_output || \ + (git status; git --no-pager diff; exit 1) +fi + +if [[ -n "${VET_ONLY_PROTO}" ]]; then + exit 0 +fi + # - Ensure all source files contain a copyright message. -not git grep -L "\(Copyright [0-9]\{4,\} gRPC authors\)\|DO NOT EDIT" -- '*.go' +# (Done in two parts because Darwin "git grep" has broken support for compound +# exclusion matches.) +(grep -L "DO NOT EDIT" $(git grep -L "\(Copyright [0-9]\{4,\} gRPC authors\)" -- '*.go') || true) | fail_on_output # - Make sure all tests in grpc and grpc/test use leakcheck via Teardown. not grep 'func Test[^(]' *_test.go @@ -93,7 +85,7 @@ not git grep -l 'x/net/context' -- "*.go" git grep -l '"math/rand"' -- "*.go" 2>&1 | not grep -v '^examples\|^stress\|grpcrand\|^benchmark\|wrr_test' # - Do not call grpclog directly. Use grpclog.Component instead. -git grep -l 'grpclog.I\|grpclog.W\|grpclog.E\|grpclog.F\|grpclog.V' -- "*.go" | not grep -v '^grpclog/component.go\|^internal/grpctest/tlogger_test.go' +git grep -l -e 'grpclog.I' --or -e 'grpclog.W' --or -e 'grpclog.E' --or -e 'grpclog.F' --or -e 'grpclog.V' -- "*.go" | not grep -v '^grpclog/component.go\|^internal/grpctest/tlogger_test.go' # - Ensure all ptypes proto packages are renamed when importing. not git grep "\(import \|^\s*\)\"github.com/golang/protobuf/ptypes/" -- "*.go" @@ -101,19 +93,8 @@ not git grep "\(import \|^\s*\)\"github.com/golang/protobuf/ptypes/" -- "*.go" # - Ensure all xds proto imports are renamed to *pb or *grpc. git grep '"github.com/envoyproxy/go-control-plane/envoy' -- '*.go' ':(exclude)*.pb.go' | not grep -v 'pb "\|grpc "' -# - Check imports that are illegal in appengine (until Go 1.11). -# TODO: Remove when we drop Go 1.10 support -go list -f {{.Dir}} ./... | xargs go run test/go_vet/vet.go - misspell -error . -# - Check that generated proto files are up to date. -if [[ -z "${VET_SKIP_PROTO}" ]]; then - PATH="/home/travis/bin:${PATH}" make proto && \ - git status --porcelain 2>&1 | fail_on_output || \ - (git status; git --no-pager diff; exit 1) -fi - # - gofmt, goimports, golint (with exceptions for generated code), go vet, # go mod tidy. # Perform these checks on each module inside gRPC. @@ -123,9 +104,9 @@ for MOD_FILE in $(find . -name 'go.mod'); do go vet -all ./... | fail_on_output gofmt -s -d -l . 2>&1 | fail_on_output goimports -l . 2>&1 | not grep -vE "\.pb\.go" - golint ./... 2>&1 | not grep -vE "/testv3\.pb\.go:" + golint ./... 2>&1 | not grep -vE "/grpc_testing_not_regenerate/.*\.pb\.go:" - go mod tidy + go mod tidy -compat=1.17 git status --porcelain 2>&1 | fail_on_output || \ (git status; git --no-pager diff; exit 1) popd @@ -135,8 +116,9 @@ done # # TODO(dfawley): don't use deprecated functions in examples or first-party # plugins. +# TODO(dfawley): enable ST1019 (duplicate imports) but allow for protobufs. SC_OUT="$(mktemp)" -staticcheck -go 1.9 -checks 'inherit,-ST1015' ./... > "${SC_OUT}" || true +staticcheck -go 1.19 -checks 'inherit,-ST1015,-ST1019,-SA1019' ./... > "${SC_OUT}" || true # Error if anything other than deprecation warnings are printed. not grep -v "is deprecated:.*SA1019" "${SC_OUT}" # Only ignore the following deprecated types/fields/functions. @@ -163,7 +145,6 @@ grpc.NewGZIPDecompressor grpc.RPCCompressor grpc.RPCDecompressor grpc.ServiceConfig -grpc.WithBalancerName grpc.WithCompressor grpc.WithDecompressor grpc.WithDialer diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/decode.go b/vendor/google.golang.org/protobuf/encoding/protojson/decode.go new file mode 100644 index 00000000..5f28148d --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/decode.go @@ -0,0 +1,665 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protojson + +import ( + "encoding/base64" + "fmt" + "math" + "strconv" + "strings" + + "google.golang.org/protobuf/internal/encoding/json" + "google.golang.org/protobuf/internal/encoding/messageset" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/flags" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/pragma" + "google.golang.org/protobuf/internal/set" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +// Unmarshal reads the given []byte into the given proto.Message. +// The provided message must be mutable (e.g., a non-nil pointer to a message). +func Unmarshal(b []byte, m proto.Message) error { + return UnmarshalOptions{}.Unmarshal(b, m) +} + +// UnmarshalOptions is a configurable JSON format parser. +type UnmarshalOptions struct { + pragma.NoUnkeyedLiterals + + // If AllowPartial is set, input for messages that will result in missing + // required fields will not return an error. + AllowPartial bool + + // If DiscardUnknown is set, unknown fields are ignored. + DiscardUnknown bool + + // Resolver is used for looking up types when unmarshaling + // google.protobuf.Any messages or extension fields. + // If nil, this defaults to using protoregistry.GlobalTypes. + Resolver interface { + protoregistry.MessageTypeResolver + protoregistry.ExtensionTypeResolver + } +} + +// Unmarshal reads the given []byte and populates the given proto.Message +// using options in the UnmarshalOptions object. +// It will clear the message first before setting the fields. +// If it returns an error, the given message may be partially set. +// The provided message must be mutable (e.g., a non-nil pointer to a message). +func (o UnmarshalOptions) Unmarshal(b []byte, m proto.Message) error { + return o.unmarshal(b, m) +} + +// unmarshal is a centralized function that all unmarshal operations go through. +// For profiling purposes, avoid changing the name of this function or +// introducing other code paths for unmarshal that do not go through this. +func (o UnmarshalOptions) unmarshal(b []byte, m proto.Message) error { + proto.Reset(m) + + if o.Resolver == nil { + o.Resolver = protoregistry.GlobalTypes + } + + dec := decoder{json.NewDecoder(b), o} + if err := dec.unmarshalMessage(m.ProtoReflect(), false); err != nil { + return err + } + + // Check for EOF. + tok, err := dec.Read() + if err != nil { + return err + } + if tok.Kind() != json.EOF { + return dec.unexpectedTokenError(tok) + } + + if o.AllowPartial { + return nil + } + return proto.CheckInitialized(m) +} + +type decoder struct { + *json.Decoder + opts UnmarshalOptions +} + +// newError returns an error object with position info. +func (d decoder) newError(pos int, f string, x ...interface{}) error { + line, column := d.Position(pos) + head := fmt.Sprintf("(line %d:%d): ", line, column) + return errors.New(head+f, x...) +} + +// unexpectedTokenError returns a syntax error for the given unexpected token. +func (d decoder) unexpectedTokenError(tok json.Token) error { + return d.syntaxError(tok.Pos(), "unexpected token %s", tok.RawString()) +} + +// syntaxError returns a syntax error for given position. +func (d decoder) syntaxError(pos int, f string, x ...interface{}) error { + line, column := d.Position(pos) + head := fmt.Sprintf("syntax error (line %d:%d): ", line, column) + return errors.New(head+f, x...) +} + +// unmarshalMessage unmarshals a message into the given protoreflect.Message. +func (d decoder) unmarshalMessage(m protoreflect.Message, skipTypeURL bool) error { + if unmarshal := wellKnownTypeUnmarshaler(m.Descriptor().FullName()); unmarshal != nil { + return unmarshal(d, m) + } + + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(tok) + } + + messageDesc := m.Descriptor() + if !flags.ProtoLegacy && messageset.IsMessageSet(messageDesc) { + return errors.New("no support for proto1 MessageSets") + } + + var seenNums set.Ints + var seenOneofs set.Ints + fieldDescs := messageDesc.Fields() + for { + // Read field name. + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + default: + return d.unexpectedTokenError(tok) + case json.ObjectClose: + return nil + case json.Name: + // Continue below. + } + + name := tok.Name() + // Unmarshaling a non-custom embedded message in Any will contain the + // JSON field "@type" which should be skipped because it is not a field + // of the embedded message, but simply an artifact of the Any format. + if skipTypeURL && name == "@type" { + d.Read() + continue + } + + // Get the FieldDescriptor. + var fd protoreflect.FieldDescriptor + if strings.HasPrefix(name, "[") && strings.HasSuffix(name, "]") { + // Only extension names are in [name] format. + extName := protoreflect.FullName(name[1 : len(name)-1]) + extType, err := d.opts.Resolver.FindExtensionByName(extName) + if err != nil && err != protoregistry.NotFound { + return d.newError(tok.Pos(), "unable to resolve %s: %v", tok.RawString(), err) + } + if extType != nil { + fd = extType.TypeDescriptor() + if !messageDesc.ExtensionRanges().Has(fd.Number()) || fd.ContainingMessage().FullName() != messageDesc.FullName() { + return d.newError(tok.Pos(), "message %v cannot be extended by %v", messageDesc.FullName(), fd.FullName()) + } + } + } else { + // The name can either be the JSON name or the proto field name. + fd = fieldDescs.ByJSONName(name) + if fd == nil { + fd = fieldDescs.ByTextName(name) + } + } + if flags.ProtoLegacy { + if fd != nil && fd.IsWeak() && fd.Message().IsPlaceholder() { + fd = nil // reset since the weak reference is not linked in + } + } + + if fd == nil { + // Field is unknown. + if d.opts.DiscardUnknown { + if err := d.skipJSONValue(); err != nil { + return err + } + continue + } + return d.newError(tok.Pos(), "unknown field %v", tok.RawString()) + } + + // Do not allow duplicate fields. + num := uint64(fd.Number()) + if seenNums.Has(num) { + return d.newError(tok.Pos(), "duplicate field %v", tok.RawString()) + } + seenNums.Set(num) + + // No need to set values for JSON null unless the field type is + // google.protobuf.Value or google.protobuf.NullValue. + if tok, _ := d.Peek(); tok.Kind() == json.Null && !isKnownValue(fd) && !isNullValue(fd) { + d.Read() + continue + } + + switch { + case fd.IsList(): + list := m.Mutable(fd).List() + if err := d.unmarshalList(list, fd); err != nil { + return err + } + case fd.IsMap(): + mmap := m.Mutable(fd).Map() + if err := d.unmarshalMap(mmap, fd); err != nil { + return err + } + default: + // If field is a oneof, check if it has already been set. + if od := fd.ContainingOneof(); od != nil { + idx := uint64(od.Index()) + if seenOneofs.Has(idx) { + return d.newError(tok.Pos(), "error parsing %s, oneof %v is already set", tok.RawString(), od.FullName()) + } + seenOneofs.Set(idx) + } + + // Required or optional fields. + if err := d.unmarshalSingular(m, fd); err != nil { + return err + } + } + } +} + +func isKnownValue(fd protoreflect.FieldDescriptor) bool { + md := fd.Message() + return md != nil && md.FullName() == genid.Value_message_fullname +} + +func isNullValue(fd protoreflect.FieldDescriptor) bool { + ed := fd.Enum() + return ed != nil && ed.FullName() == genid.NullValue_enum_fullname +} + +// unmarshalSingular unmarshals to the non-repeated field specified +// by the given FieldDescriptor. +func (d decoder) unmarshalSingular(m protoreflect.Message, fd protoreflect.FieldDescriptor) error { + var val protoreflect.Value + var err error + switch fd.Kind() { + case protoreflect.MessageKind, protoreflect.GroupKind: + val = m.NewField(fd) + err = d.unmarshalMessage(val.Message(), false) + default: + val, err = d.unmarshalScalar(fd) + } + + if err != nil { + return err + } + m.Set(fd, val) + return nil +} + +// unmarshalScalar unmarshals to a scalar/enum protoreflect.Value specified by +// the given FieldDescriptor. +func (d decoder) unmarshalScalar(fd protoreflect.FieldDescriptor) (protoreflect.Value, error) { + const b32 int = 32 + const b64 int = 64 + + tok, err := d.Read() + if err != nil { + return protoreflect.Value{}, err + } + + kind := fd.Kind() + switch kind { + case protoreflect.BoolKind: + if tok.Kind() == json.Bool { + return protoreflect.ValueOfBool(tok.Bool()), nil + } + + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + if v, ok := unmarshalInt(tok, b32); ok { + return v, nil + } + + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + if v, ok := unmarshalInt(tok, b64); ok { + return v, nil + } + + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + if v, ok := unmarshalUint(tok, b32); ok { + return v, nil + } + + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + if v, ok := unmarshalUint(tok, b64); ok { + return v, nil + } + + case protoreflect.FloatKind: + if v, ok := unmarshalFloat(tok, b32); ok { + return v, nil + } + + case protoreflect.DoubleKind: + if v, ok := unmarshalFloat(tok, b64); ok { + return v, nil + } + + case protoreflect.StringKind: + if tok.Kind() == json.String { + return protoreflect.ValueOfString(tok.ParsedString()), nil + } + + case protoreflect.BytesKind: + if v, ok := unmarshalBytes(tok); ok { + return v, nil + } + + case protoreflect.EnumKind: + if v, ok := unmarshalEnum(tok, fd); ok { + return v, nil + } + + default: + panic(fmt.Sprintf("unmarshalScalar: invalid scalar kind %v", kind)) + } + + return protoreflect.Value{}, d.newError(tok.Pos(), "invalid value for %v type: %v", kind, tok.RawString()) +} + +func unmarshalInt(tok json.Token, bitSize int) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.Number: + return getInt(tok, bitSize) + + case json.String: + // Decode number from string. + s := strings.TrimSpace(tok.ParsedString()) + if len(s) != len(tok.ParsedString()) { + return protoreflect.Value{}, false + } + dec := json.NewDecoder([]byte(s)) + tok, err := dec.Read() + if err != nil { + return protoreflect.Value{}, false + } + return getInt(tok, bitSize) + } + return protoreflect.Value{}, false +} + +func getInt(tok json.Token, bitSize int) (protoreflect.Value, bool) { + n, ok := tok.Int(bitSize) + if !ok { + return protoreflect.Value{}, false + } + if bitSize == 32 { + return protoreflect.ValueOfInt32(int32(n)), true + } + return protoreflect.ValueOfInt64(n), true +} + +func unmarshalUint(tok json.Token, bitSize int) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.Number: + return getUint(tok, bitSize) + + case json.String: + // Decode number from string. + s := strings.TrimSpace(tok.ParsedString()) + if len(s) != len(tok.ParsedString()) { + return protoreflect.Value{}, false + } + dec := json.NewDecoder([]byte(s)) + tok, err := dec.Read() + if err != nil { + return protoreflect.Value{}, false + } + return getUint(tok, bitSize) + } + return protoreflect.Value{}, false +} + +func getUint(tok json.Token, bitSize int) (protoreflect.Value, bool) { + n, ok := tok.Uint(bitSize) + if !ok { + return protoreflect.Value{}, false + } + if bitSize == 32 { + return protoreflect.ValueOfUint32(uint32(n)), true + } + return protoreflect.ValueOfUint64(n), true +} + +func unmarshalFloat(tok json.Token, bitSize int) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.Number: + return getFloat(tok, bitSize) + + case json.String: + s := tok.ParsedString() + switch s { + case "NaN": + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(math.NaN())), true + } + return protoreflect.ValueOfFloat64(math.NaN()), true + case "Infinity": + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(math.Inf(+1))), true + } + return protoreflect.ValueOfFloat64(math.Inf(+1)), true + case "-Infinity": + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(math.Inf(-1))), true + } + return protoreflect.ValueOfFloat64(math.Inf(-1)), true + } + + // Decode number from string. + if len(s) != len(strings.TrimSpace(s)) { + return protoreflect.Value{}, false + } + dec := json.NewDecoder([]byte(s)) + tok, err := dec.Read() + if err != nil { + return protoreflect.Value{}, false + } + return getFloat(tok, bitSize) + } + return protoreflect.Value{}, false +} + +func getFloat(tok json.Token, bitSize int) (protoreflect.Value, bool) { + n, ok := tok.Float(bitSize) + if !ok { + return protoreflect.Value{}, false + } + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(n)), true + } + return protoreflect.ValueOfFloat64(n), true +} + +func unmarshalBytes(tok json.Token) (protoreflect.Value, bool) { + if tok.Kind() != json.String { + return protoreflect.Value{}, false + } + + s := tok.ParsedString() + enc := base64.StdEncoding + if strings.ContainsAny(s, "-_") { + enc = base64.URLEncoding + } + if len(s)%4 != 0 { + enc = enc.WithPadding(base64.NoPadding) + } + b, err := enc.DecodeString(s) + if err != nil { + return protoreflect.Value{}, false + } + return protoreflect.ValueOfBytes(b), true +} + +func unmarshalEnum(tok json.Token, fd protoreflect.FieldDescriptor) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.String: + // Lookup EnumNumber based on name. + s := tok.ParsedString() + if enumVal := fd.Enum().Values().ByName(protoreflect.Name(s)); enumVal != nil { + return protoreflect.ValueOfEnum(enumVal.Number()), true + } + + case json.Number: + if n, ok := tok.Int(32); ok { + return protoreflect.ValueOfEnum(protoreflect.EnumNumber(n)), true + } + + case json.Null: + // This is only valid for google.protobuf.NullValue. + if isNullValue(fd) { + return protoreflect.ValueOfEnum(0), true + } + } + + return protoreflect.Value{}, false +} + +func (d decoder) unmarshalList(list protoreflect.List, fd protoreflect.FieldDescriptor) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ArrayOpen { + return d.unexpectedTokenError(tok) + } + + switch fd.Kind() { + case protoreflect.MessageKind, protoreflect.GroupKind: + for { + tok, err := d.Peek() + if err != nil { + return err + } + + if tok.Kind() == json.ArrayClose { + d.Read() + return nil + } + + val := list.NewElement() + if err := d.unmarshalMessage(val.Message(), false); err != nil { + return err + } + list.Append(val) + } + default: + for { + tok, err := d.Peek() + if err != nil { + return err + } + + if tok.Kind() == json.ArrayClose { + d.Read() + return nil + } + + val, err := d.unmarshalScalar(fd) + if err != nil { + return err + } + list.Append(val) + } + } + + return nil +} + +func (d decoder) unmarshalMap(mmap protoreflect.Map, fd protoreflect.FieldDescriptor) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(tok) + } + + // Determine ahead whether map entry is a scalar type or a message type in + // order to call the appropriate unmarshalMapValue func inside the for loop + // below. + var unmarshalMapValue func() (protoreflect.Value, error) + switch fd.MapValue().Kind() { + case protoreflect.MessageKind, protoreflect.GroupKind: + unmarshalMapValue = func() (protoreflect.Value, error) { + val := mmap.NewValue() + if err := d.unmarshalMessage(val.Message(), false); err != nil { + return protoreflect.Value{}, err + } + return val, nil + } + default: + unmarshalMapValue = func() (protoreflect.Value, error) { + return d.unmarshalScalar(fd.MapValue()) + } + } + +Loop: + for { + // Read field name. + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + default: + return d.unexpectedTokenError(tok) + case json.ObjectClose: + break Loop + case json.Name: + // Continue. + } + + // Unmarshal field name. + pkey, err := d.unmarshalMapKey(tok, fd.MapKey()) + if err != nil { + return err + } + + // Check for duplicate field name. + if mmap.Has(pkey) { + return d.newError(tok.Pos(), "duplicate map key %v", tok.RawString()) + } + + // Read and unmarshal field value. + pval, err := unmarshalMapValue() + if err != nil { + return err + } + + mmap.Set(pkey, pval) + } + + return nil +} + +// unmarshalMapKey converts given token of Name kind into a protoreflect.MapKey. +// A map key type is any integral or string type. +func (d decoder) unmarshalMapKey(tok json.Token, fd protoreflect.FieldDescriptor) (protoreflect.MapKey, error) { + const b32 = 32 + const b64 = 64 + const base10 = 10 + + name := tok.Name() + kind := fd.Kind() + switch kind { + case protoreflect.StringKind: + return protoreflect.ValueOfString(name).MapKey(), nil + + case protoreflect.BoolKind: + switch name { + case "true": + return protoreflect.ValueOfBool(true).MapKey(), nil + case "false": + return protoreflect.ValueOfBool(false).MapKey(), nil + } + + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + if n, err := strconv.ParseInt(name, base10, b32); err == nil { + return protoreflect.ValueOfInt32(int32(n)).MapKey(), nil + } + + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + if n, err := strconv.ParseInt(name, base10, b64); err == nil { + return protoreflect.ValueOfInt64(int64(n)).MapKey(), nil + } + + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + if n, err := strconv.ParseUint(name, base10, b32); err == nil { + return protoreflect.ValueOfUint32(uint32(n)).MapKey(), nil + } + + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + if n, err := strconv.ParseUint(name, base10, b64); err == nil { + return protoreflect.ValueOfUint64(uint64(n)).MapKey(), nil + } + + default: + panic(fmt.Sprintf("invalid kind for map key: %v", kind)) + } + + return protoreflect.MapKey{}, d.newError(tok.Pos(), "invalid value for %v key: %s", kind, tok.RawString()) +} diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/doc.go b/vendor/google.golang.org/protobuf/encoding/protojson/doc.go new file mode 100644 index 00000000..21d5d2cb --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/doc.go @@ -0,0 +1,11 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package protojson marshals and unmarshals protocol buffer messages as JSON +// format. It follows the guide at +// https://protobuf.dev/programming-guides/proto3#json. +// +// This package produces a different output than the standard "encoding/json" +// package, which does not operate correctly on protocol buffer messages. +package protojson diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/encode.go b/vendor/google.golang.org/protobuf/encoding/protojson/encode.go new file mode 100644 index 00000000..66b95870 --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/encode.go @@ -0,0 +1,349 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protojson + +import ( + "encoding/base64" + "fmt" + + "google.golang.org/protobuf/internal/encoding/json" + "google.golang.org/protobuf/internal/encoding/messageset" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/flags" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/order" + "google.golang.org/protobuf/internal/pragma" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +const defaultIndent = " " + +// Format formats the message as a multiline string. +// This function is only intended for human consumption and ignores errors. +// Do not depend on the output being stable. It may change over time across +// different versions of the program. +func Format(m proto.Message) string { + return MarshalOptions{Multiline: true}.Format(m) +} + +// Marshal writes the given proto.Message in JSON format using default options. +// Do not depend on the output being stable. It may change over time across +// different versions of the program. +func Marshal(m proto.Message) ([]byte, error) { + return MarshalOptions{}.Marshal(m) +} + +// MarshalOptions is a configurable JSON format marshaler. +type MarshalOptions struct { + pragma.NoUnkeyedLiterals + + // Multiline specifies whether the marshaler should format the output in + // indented-form with every textual element on a new line. + // If Indent is an empty string, then an arbitrary indent is chosen. + Multiline bool + + // Indent specifies the set of indentation characters to use in a multiline + // formatted output such that every entry is preceded by Indent and + // terminated by a newline. If non-empty, then Multiline is treated as true. + // Indent can only be composed of space or tab characters. + Indent string + + // AllowPartial allows messages that have missing required fields to marshal + // without returning an error. If AllowPartial is false (the default), + // Marshal will return error if there are any missing required fields. + AllowPartial bool + + // UseProtoNames uses proto field name instead of lowerCamelCase name in JSON + // field names. + UseProtoNames bool + + // UseEnumNumbers emits enum values as numbers. + UseEnumNumbers bool + + // EmitUnpopulated specifies whether to emit unpopulated fields. It does not + // emit unpopulated oneof fields or unpopulated extension fields. + // The JSON value emitted for unpopulated fields are as follows: + // ╔═══════╤════════════════════════════╗ + // ║ JSON │ Protobuf field ║ + // ╠═══════╪════════════════════════════╣ + // ║ false │ proto3 boolean fields ║ + // ║ 0 │ proto3 numeric fields ║ + // ║ "" │ proto3 string/bytes fields ║ + // ║ null │ proto2 scalar fields ║ + // ║ null │ message fields ║ + // ║ [] │ list fields ║ + // ║ {} │ map fields ║ + // ╚═══════╧════════════════════════════╝ + EmitUnpopulated bool + + // Resolver is used for looking up types when expanding google.protobuf.Any + // messages. If nil, this defaults to using protoregistry.GlobalTypes. + Resolver interface { + protoregistry.ExtensionTypeResolver + protoregistry.MessageTypeResolver + } +} + +// Format formats the message as a string. +// This method is only intended for human consumption and ignores errors. +// Do not depend on the output being stable. It may change over time across +// different versions of the program. +func (o MarshalOptions) Format(m proto.Message) string { + if m == nil || !m.ProtoReflect().IsValid() { + return "" // invalid syntax, but okay since this is for debugging + } + o.AllowPartial = true + b, _ := o.Marshal(m) + return string(b) +} + +// Marshal marshals the given proto.Message in the JSON format using options in +// MarshalOptions. Do not depend on the output being stable. It may change over +// time across different versions of the program. +func (o MarshalOptions) Marshal(m proto.Message) ([]byte, error) { + return o.marshal(nil, m) +} + +// MarshalAppend appends the JSON format encoding of m to b, +// returning the result. +func (o MarshalOptions) MarshalAppend(b []byte, m proto.Message) ([]byte, error) { + return o.marshal(b, m) +} + +// marshal is a centralized function that all marshal operations go through. +// For profiling purposes, avoid changing the name of this function or +// introducing other code paths for marshal that do not go through this. +func (o MarshalOptions) marshal(b []byte, m proto.Message) ([]byte, error) { + if o.Multiline && o.Indent == "" { + o.Indent = defaultIndent + } + if o.Resolver == nil { + o.Resolver = protoregistry.GlobalTypes + } + + internalEnc, err := json.NewEncoder(b, o.Indent) + if err != nil { + return nil, err + } + + // Treat nil message interface as an empty message, + // in which case the output in an empty JSON object. + if m == nil { + return append(b, '{', '}'), nil + } + + enc := encoder{internalEnc, o} + if err := enc.marshalMessage(m.ProtoReflect(), ""); err != nil { + return nil, err + } + if o.AllowPartial { + return enc.Bytes(), nil + } + return enc.Bytes(), proto.CheckInitialized(m) +} + +type encoder struct { + *json.Encoder + opts MarshalOptions +} + +// typeFieldDesc is a synthetic field descriptor used for the "@type" field. +var typeFieldDesc = func() protoreflect.FieldDescriptor { + var fd filedesc.Field + fd.L0.FullName = "@type" + fd.L0.Index = -1 + fd.L1.Cardinality = protoreflect.Optional + fd.L1.Kind = protoreflect.StringKind + return &fd +}() + +// typeURLFieldRanger wraps a protoreflect.Message and modifies its Range method +// to additionally iterate over a synthetic field for the type URL. +type typeURLFieldRanger struct { + order.FieldRanger + typeURL string +} + +func (m typeURLFieldRanger) Range(f func(protoreflect.FieldDescriptor, protoreflect.Value) bool) { + if !f(typeFieldDesc, protoreflect.ValueOfString(m.typeURL)) { + return + } + m.FieldRanger.Range(f) +} + +// unpopulatedFieldRanger wraps a protoreflect.Message and modifies its Range +// method to additionally iterate over unpopulated fields. +type unpopulatedFieldRanger struct{ protoreflect.Message } + +func (m unpopulatedFieldRanger) Range(f func(protoreflect.FieldDescriptor, protoreflect.Value) bool) { + fds := m.Descriptor().Fields() + for i := 0; i < fds.Len(); i++ { + fd := fds.Get(i) + if m.Has(fd) || fd.ContainingOneof() != nil { + continue // ignore populated fields and fields within a oneofs + } + + v := m.Get(fd) + isProto2Scalar := fd.Syntax() == protoreflect.Proto2 && fd.Default().IsValid() + isSingularMessage := fd.Cardinality() != protoreflect.Repeated && fd.Message() != nil + if isProto2Scalar || isSingularMessage { + v = protoreflect.Value{} // use invalid value to emit null + } + if !f(fd, v) { + return + } + } + m.Message.Range(f) +} + +// marshalMessage marshals the fields in the given protoreflect.Message. +// If the typeURL is non-empty, then a synthetic "@type" field is injected +// containing the URL as the value. +func (e encoder) marshalMessage(m protoreflect.Message, typeURL string) error { + if !flags.ProtoLegacy && messageset.IsMessageSet(m.Descriptor()) { + return errors.New("no support for proto1 MessageSets") + } + + if marshal := wellKnownTypeMarshaler(m.Descriptor().FullName()); marshal != nil { + return marshal(e, m) + } + + e.StartObject() + defer e.EndObject() + + var fields order.FieldRanger = m + if e.opts.EmitUnpopulated { + fields = unpopulatedFieldRanger{m} + } + if typeURL != "" { + fields = typeURLFieldRanger{fields, typeURL} + } + + var err error + order.RangeFields(fields, order.IndexNameFieldOrder, func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool { + name := fd.JSONName() + if e.opts.UseProtoNames { + name = fd.TextName() + } + + if err = e.WriteName(name); err != nil { + return false + } + if err = e.marshalValue(v, fd); err != nil { + return false + } + return true + }) + return err +} + +// marshalValue marshals the given protoreflect.Value. +func (e encoder) marshalValue(val protoreflect.Value, fd protoreflect.FieldDescriptor) error { + switch { + case fd.IsList(): + return e.marshalList(val.List(), fd) + case fd.IsMap(): + return e.marshalMap(val.Map(), fd) + default: + return e.marshalSingular(val, fd) + } +} + +// marshalSingular marshals the given non-repeated field value. This includes +// all scalar types, enums, messages, and groups. +func (e encoder) marshalSingular(val protoreflect.Value, fd protoreflect.FieldDescriptor) error { + if !val.IsValid() { + e.WriteNull() + return nil + } + + switch kind := fd.Kind(); kind { + case protoreflect.BoolKind: + e.WriteBool(val.Bool()) + + case protoreflect.StringKind: + if e.WriteString(val.String()) != nil { + return errors.InvalidUTF8(string(fd.FullName())) + } + + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + e.WriteInt(val.Int()) + + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + e.WriteUint(val.Uint()) + + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Uint64Kind, + protoreflect.Sfixed64Kind, protoreflect.Fixed64Kind: + // 64-bit integers are written out as JSON string. + e.WriteString(val.String()) + + case protoreflect.FloatKind: + // Encoder.WriteFloat handles the special numbers NaN and infinites. + e.WriteFloat(val.Float(), 32) + + case protoreflect.DoubleKind: + // Encoder.WriteFloat handles the special numbers NaN and infinites. + e.WriteFloat(val.Float(), 64) + + case protoreflect.BytesKind: + e.WriteString(base64.StdEncoding.EncodeToString(val.Bytes())) + + case protoreflect.EnumKind: + if fd.Enum().FullName() == genid.NullValue_enum_fullname { + e.WriteNull() + } else { + desc := fd.Enum().Values().ByNumber(val.Enum()) + if e.opts.UseEnumNumbers || desc == nil { + e.WriteInt(int64(val.Enum())) + } else { + e.WriteString(string(desc.Name())) + } + } + + case protoreflect.MessageKind, protoreflect.GroupKind: + if err := e.marshalMessage(val.Message(), ""); err != nil { + return err + } + + default: + panic(fmt.Sprintf("%v has unknown kind: %v", fd.FullName(), kind)) + } + return nil +} + +// marshalList marshals the given protoreflect.List. +func (e encoder) marshalList(list protoreflect.List, fd protoreflect.FieldDescriptor) error { + e.StartArray() + defer e.EndArray() + + for i := 0; i < list.Len(); i++ { + item := list.Get(i) + if err := e.marshalSingular(item, fd); err != nil { + return err + } + } + return nil +} + +// marshalMap marshals given protoreflect.Map. +func (e encoder) marshalMap(mmap protoreflect.Map, fd protoreflect.FieldDescriptor) error { + e.StartObject() + defer e.EndObject() + + var err error + order.RangeEntries(mmap, order.GenericKeyOrder, func(k protoreflect.MapKey, v protoreflect.Value) bool { + if err = e.WriteName(k.String()); err != nil { + return false + } + if err = e.marshalSingular(v, fd.MapValue()); err != nil { + return false + } + return true + }) + return err +} diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go b/vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go new file mode 100644 index 00000000..6c37d417 --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go @@ -0,0 +1,895 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protojson + +import ( + "bytes" + "fmt" + "math" + "strconv" + "strings" + "time" + + "google.golang.org/protobuf/internal/encoding/json" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" +) + +type marshalFunc func(encoder, protoreflect.Message) error + +// wellKnownTypeMarshaler returns a marshal function if the message type +// has specialized serialization behavior. It returns nil otherwise. +func wellKnownTypeMarshaler(name protoreflect.FullName) marshalFunc { + if name.Parent() == genid.GoogleProtobuf_package { + switch name.Name() { + case genid.Any_message_name: + return encoder.marshalAny + case genid.Timestamp_message_name: + return encoder.marshalTimestamp + case genid.Duration_message_name: + return encoder.marshalDuration + case genid.BoolValue_message_name, + genid.Int32Value_message_name, + genid.Int64Value_message_name, + genid.UInt32Value_message_name, + genid.UInt64Value_message_name, + genid.FloatValue_message_name, + genid.DoubleValue_message_name, + genid.StringValue_message_name, + genid.BytesValue_message_name: + return encoder.marshalWrapperType + case genid.Struct_message_name: + return encoder.marshalStruct + case genid.ListValue_message_name: + return encoder.marshalListValue + case genid.Value_message_name: + return encoder.marshalKnownValue + case genid.FieldMask_message_name: + return encoder.marshalFieldMask + case genid.Empty_message_name: + return encoder.marshalEmpty + } + } + return nil +} + +type unmarshalFunc func(decoder, protoreflect.Message) error + +// wellKnownTypeUnmarshaler returns a unmarshal function if the message type +// has specialized serialization behavior. It returns nil otherwise. +func wellKnownTypeUnmarshaler(name protoreflect.FullName) unmarshalFunc { + if name.Parent() == genid.GoogleProtobuf_package { + switch name.Name() { + case genid.Any_message_name: + return decoder.unmarshalAny + case genid.Timestamp_message_name: + return decoder.unmarshalTimestamp + case genid.Duration_message_name: + return decoder.unmarshalDuration + case genid.BoolValue_message_name, + genid.Int32Value_message_name, + genid.Int64Value_message_name, + genid.UInt32Value_message_name, + genid.UInt64Value_message_name, + genid.FloatValue_message_name, + genid.DoubleValue_message_name, + genid.StringValue_message_name, + genid.BytesValue_message_name: + return decoder.unmarshalWrapperType + case genid.Struct_message_name: + return decoder.unmarshalStruct + case genid.ListValue_message_name: + return decoder.unmarshalListValue + case genid.Value_message_name: + return decoder.unmarshalKnownValue + case genid.FieldMask_message_name: + return decoder.unmarshalFieldMask + case genid.Empty_message_name: + return decoder.unmarshalEmpty + } + } + return nil +} + +// The JSON representation of an Any message uses the regular representation of +// the deserialized, embedded message, with an additional field `@type` which +// contains the type URL. If the embedded message type is well-known and has a +// custom JSON representation, that representation will be embedded adding a +// field `value` which holds the custom JSON in addition to the `@type` field. + +func (e encoder) marshalAny(m protoreflect.Message) error { + fds := m.Descriptor().Fields() + fdType := fds.ByNumber(genid.Any_TypeUrl_field_number) + fdValue := fds.ByNumber(genid.Any_Value_field_number) + + if !m.Has(fdType) { + if !m.Has(fdValue) { + // If message is empty, marshal out empty JSON object. + e.StartObject() + e.EndObject() + return nil + } else { + // Return error if type_url field is not set, but value is set. + return errors.New("%s: %v is not set", genid.Any_message_fullname, genid.Any_TypeUrl_field_name) + } + } + + typeVal := m.Get(fdType) + valueVal := m.Get(fdValue) + + // Resolve the type in order to unmarshal value field. + typeURL := typeVal.String() + emt, err := e.opts.Resolver.FindMessageByURL(typeURL) + if err != nil { + return errors.New("%s: unable to resolve %q: %v", genid.Any_message_fullname, typeURL, err) + } + + em := emt.New() + err = proto.UnmarshalOptions{ + AllowPartial: true, // never check required fields inside an Any + Resolver: e.opts.Resolver, + }.Unmarshal(valueVal.Bytes(), em.Interface()) + if err != nil { + return errors.New("%s: unable to unmarshal %q: %v", genid.Any_message_fullname, typeURL, err) + } + + // If type of value has custom JSON encoding, marshal out a field "value" + // with corresponding custom JSON encoding of the embedded message as a + // field. + if marshal := wellKnownTypeMarshaler(emt.Descriptor().FullName()); marshal != nil { + e.StartObject() + defer e.EndObject() + + // Marshal out @type field. + e.WriteName("@type") + if err := e.WriteString(typeURL); err != nil { + return err + } + + e.WriteName("value") + return marshal(e, em) + } + + // Else, marshal out the embedded message's fields in this Any object. + if err := e.marshalMessage(em, typeURL); err != nil { + return err + } + + return nil +} + +func (d decoder) unmarshalAny(m protoreflect.Message) error { + // Peek to check for json.ObjectOpen to avoid advancing a read. + start, err := d.Peek() + if err != nil { + return err + } + if start.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(start) + } + + // Use another decoder to parse the unread bytes for @type field. This + // avoids advancing a read from current decoder because the current JSON + // object may contain the fields of the embedded type. + dec := decoder{d.Clone(), UnmarshalOptions{}} + tok, err := findTypeURL(dec) + switch err { + case errEmptyObject: + // An empty JSON object translates to an empty Any message. + d.Read() // Read json.ObjectOpen. + d.Read() // Read json.ObjectClose. + return nil + + case errMissingType: + if d.opts.DiscardUnknown { + // Treat all fields as unknowns, similar to an empty object. + return d.skipJSONValue() + } + // Use start.Pos() for line position. + return d.newError(start.Pos(), err.Error()) + + default: + if err != nil { + return err + } + } + + typeURL := tok.ParsedString() + emt, err := d.opts.Resolver.FindMessageByURL(typeURL) + if err != nil { + return d.newError(tok.Pos(), "unable to resolve %v: %q", tok.RawString(), err) + } + + // Create new message for the embedded message type and unmarshal into it. + em := emt.New() + if unmarshal := wellKnownTypeUnmarshaler(emt.Descriptor().FullName()); unmarshal != nil { + // If embedded message is a custom type, + // unmarshal the JSON "value" field into it. + if err := d.unmarshalAnyValue(unmarshal, em); err != nil { + return err + } + } else { + // Else unmarshal the current JSON object into it. + if err := d.unmarshalMessage(em, true); err != nil { + return err + } + } + // Serialize the embedded message and assign the resulting bytes to the + // proto value field. + b, err := proto.MarshalOptions{ + AllowPartial: true, // No need to check required fields inside an Any. + Deterministic: true, + }.Marshal(em.Interface()) + if err != nil { + return d.newError(start.Pos(), "error in marshaling Any.value field: %v", err) + } + + fds := m.Descriptor().Fields() + fdType := fds.ByNumber(genid.Any_TypeUrl_field_number) + fdValue := fds.ByNumber(genid.Any_Value_field_number) + + m.Set(fdType, protoreflect.ValueOfString(typeURL)) + m.Set(fdValue, protoreflect.ValueOfBytes(b)) + return nil +} + +var errEmptyObject = fmt.Errorf(`empty object`) +var errMissingType = fmt.Errorf(`missing "@type" field`) + +// findTypeURL returns the token for the "@type" field value from the given +// JSON bytes. It is expected that the given bytes start with json.ObjectOpen. +// It returns errEmptyObject if the JSON object is empty or errMissingType if +// @type field does not exist. It returns other error if the @type field is not +// valid or other decoding issues. +func findTypeURL(d decoder) (json.Token, error) { + var typeURL string + var typeTok json.Token + numFields := 0 + // Skip start object. + d.Read() + +Loop: + for { + tok, err := d.Read() + if err != nil { + return json.Token{}, err + } + + switch tok.Kind() { + case json.ObjectClose: + if typeURL == "" { + // Did not find @type field. + if numFields > 0 { + return json.Token{}, errMissingType + } + return json.Token{}, errEmptyObject + } + break Loop + + case json.Name: + numFields++ + if tok.Name() != "@type" { + // Skip value. + if err := d.skipJSONValue(); err != nil { + return json.Token{}, err + } + continue + } + + // Return error if this was previously set already. + if typeURL != "" { + return json.Token{}, d.newError(tok.Pos(), `duplicate "@type" field`) + } + // Read field value. + tok, err := d.Read() + if err != nil { + return json.Token{}, err + } + if tok.Kind() != json.String { + return json.Token{}, d.newError(tok.Pos(), `@type field value is not a string: %v`, tok.RawString()) + } + typeURL = tok.ParsedString() + if typeURL == "" { + return json.Token{}, d.newError(tok.Pos(), `@type field contains empty value`) + } + typeTok = tok + } + } + + return typeTok, nil +} + +// skipJSONValue parses a JSON value (null, boolean, string, number, object and +// array) in order to advance the read to the next JSON value. It relies on +// the decoder returning an error if the types are not in valid sequence. +func (d decoder) skipJSONValue() error { + tok, err := d.Read() + if err != nil { + return err + } + // Only need to continue reading for objects and arrays. + switch tok.Kind() { + case json.ObjectOpen: + for { + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + case json.ObjectClose: + return nil + case json.Name: + // Skip object field value. + if err := d.skipJSONValue(); err != nil { + return err + } + } + } + + case json.ArrayOpen: + for { + tok, err := d.Peek() + if err != nil { + return err + } + switch tok.Kind() { + case json.ArrayClose: + d.Read() + return nil + default: + // Skip array item. + if err := d.skipJSONValue(); err != nil { + return err + } + } + } + } + return nil +} + +// unmarshalAnyValue unmarshals the given custom-type message from the JSON +// object's "value" field. +func (d decoder) unmarshalAnyValue(unmarshal unmarshalFunc, m protoreflect.Message) error { + // Skip ObjectOpen, and start reading the fields. + d.Read() + + var found bool // Used for detecting duplicate "value". + for { + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + case json.ObjectClose: + if !found { + return d.newError(tok.Pos(), `missing "value" field`) + } + return nil + + case json.Name: + switch tok.Name() { + case "@type": + // Skip the value as this was previously parsed already. + d.Read() + + case "value": + if found { + return d.newError(tok.Pos(), `duplicate "value" field`) + } + // Unmarshal the field value into the given message. + if err := unmarshal(d, m); err != nil { + return err + } + found = true + + default: + if d.opts.DiscardUnknown { + if err := d.skipJSONValue(); err != nil { + return err + } + continue + } + return d.newError(tok.Pos(), "unknown field %v", tok.RawString()) + } + } + } +} + +// Wrapper types are encoded as JSON primitives like string, number or boolean. + +func (e encoder) marshalWrapperType(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.WrapperValue_Value_field_number) + val := m.Get(fd) + return e.marshalSingular(val, fd) +} + +func (d decoder) unmarshalWrapperType(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.WrapperValue_Value_field_number) + val, err := d.unmarshalScalar(fd) + if err != nil { + return err + } + m.Set(fd, val) + return nil +} + +// The JSON representation for Empty is an empty JSON object. + +func (e encoder) marshalEmpty(protoreflect.Message) error { + e.StartObject() + e.EndObject() + return nil +} + +func (d decoder) unmarshalEmpty(protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(tok) + } + + for { + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + case json.ObjectClose: + return nil + + case json.Name: + if d.opts.DiscardUnknown { + if err := d.skipJSONValue(); err != nil { + return err + } + continue + } + return d.newError(tok.Pos(), "unknown field %v", tok.RawString()) + + default: + return d.unexpectedTokenError(tok) + } + } +} + +// The JSON representation for Struct is a JSON object that contains the encoded +// Struct.fields map and follows the serialization rules for a map. + +func (e encoder) marshalStruct(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.Struct_Fields_field_number) + return e.marshalMap(m.Get(fd).Map(), fd) +} + +func (d decoder) unmarshalStruct(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.Struct_Fields_field_number) + return d.unmarshalMap(m.Mutable(fd).Map(), fd) +} + +// The JSON representation for ListValue is JSON array that contains the encoded +// ListValue.values repeated field and follows the serialization rules for a +// repeated field. + +func (e encoder) marshalListValue(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.ListValue_Values_field_number) + return e.marshalList(m.Get(fd).List(), fd) +} + +func (d decoder) unmarshalListValue(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.ListValue_Values_field_number) + return d.unmarshalList(m.Mutable(fd).List(), fd) +} + +// The JSON representation for a Value is dependent on the oneof field that is +// set. Each of the field in the oneof has its own custom serialization rule. A +// Value message needs to be a oneof field set, else it is an error. + +func (e encoder) marshalKnownValue(m protoreflect.Message) error { + od := m.Descriptor().Oneofs().ByName(genid.Value_Kind_oneof_name) + fd := m.WhichOneof(od) + if fd == nil { + return errors.New("%s: none of the oneof fields is set", genid.Value_message_fullname) + } + if fd.Number() == genid.Value_NumberValue_field_number { + if v := m.Get(fd).Float(); math.IsNaN(v) || math.IsInf(v, 0) { + return errors.New("%s: invalid %v value", genid.Value_NumberValue_field_fullname, v) + } + } + return e.marshalSingular(m.Get(fd), fd) +} + +func (d decoder) unmarshalKnownValue(m protoreflect.Message) error { + tok, err := d.Peek() + if err != nil { + return err + } + + var fd protoreflect.FieldDescriptor + var val protoreflect.Value + switch tok.Kind() { + case json.Null: + d.Read() + fd = m.Descriptor().Fields().ByNumber(genid.Value_NullValue_field_number) + val = protoreflect.ValueOfEnum(0) + + case json.Bool: + tok, err := d.Read() + if err != nil { + return err + } + fd = m.Descriptor().Fields().ByNumber(genid.Value_BoolValue_field_number) + val = protoreflect.ValueOfBool(tok.Bool()) + + case json.Number: + tok, err := d.Read() + if err != nil { + return err + } + fd = m.Descriptor().Fields().ByNumber(genid.Value_NumberValue_field_number) + var ok bool + val, ok = unmarshalFloat(tok, 64) + if !ok { + return d.newError(tok.Pos(), "invalid %v: %v", genid.Value_message_fullname, tok.RawString()) + } + + case json.String: + // A JSON string may have been encoded from the number_value field, + // e.g. "NaN", "Infinity", etc. Parsing a proto double type also allows + // for it to be in JSON string form. Given this custom encoding spec, + // however, there is no way to identify that and hence a JSON string is + // always assigned to the string_value field, which means that certain + // encoding cannot be parsed back to the same field. + tok, err := d.Read() + if err != nil { + return err + } + fd = m.Descriptor().Fields().ByNumber(genid.Value_StringValue_field_number) + val = protoreflect.ValueOfString(tok.ParsedString()) + + case json.ObjectOpen: + fd = m.Descriptor().Fields().ByNumber(genid.Value_StructValue_field_number) + val = m.NewField(fd) + if err := d.unmarshalStruct(val.Message()); err != nil { + return err + } + + case json.ArrayOpen: + fd = m.Descriptor().Fields().ByNumber(genid.Value_ListValue_field_number) + val = m.NewField(fd) + if err := d.unmarshalListValue(val.Message()); err != nil { + return err + } + + default: + return d.newError(tok.Pos(), "invalid %v: %v", genid.Value_message_fullname, tok.RawString()) + } + + m.Set(fd, val) + return nil +} + +// The JSON representation for a Duration is a JSON string that ends in the +// suffix "s" (indicating seconds) and is preceded by the number of seconds, +// with nanoseconds expressed as fractional seconds. +// +// Durations less than one second are represented with a 0 seconds field and a +// positive or negative nanos field. For durations of one second or more, a +// non-zero value for the nanos field must be of the same sign as the seconds +// field. +// +// Duration.seconds must be from -315,576,000,000 to +315,576,000,000 inclusive. +// Duration.nanos must be from -999,999,999 to +999,999,999 inclusive. + +const ( + secondsInNanos = 999999999 + maxSecondsInDuration = 315576000000 +) + +func (e encoder) marshalDuration(m protoreflect.Message) error { + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Duration_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Duration_Nanos_field_number) + + secsVal := m.Get(fdSeconds) + nanosVal := m.Get(fdNanos) + secs := secsVal.Int() + nanos := nanosVal.Int() + if secs < -maxSecondsInDuration || secs > maxSecondsInDuration { + return errors.New("%s: seconds out of range %v", genid.Duration_message_fullname, secs) + } + if nanos < -secondsInNanos || nanos > secondsInNanos { + return errors.New("%s: nanos out of range %v", genid.Duration_message_fullname, nanos) + } + if (secs > 0 && nanos < 0) || (secs < 0 && nanos > 0) { + return errors.New("%s: signs of seconds and nanos do not match", genid.Duration_message_fullname) + } + // Generated output always contains 0, 3, 6, or 9 fractional digits, + // depending on required precision, followed by the suffix "s". + var sign string + if secs < 0 || nanos < 0 { + sign, secs, nanos = "-", -1*secs, -1*nanos + } + x := fmt.Sprintf("%s%d.%09d", sign, secs, nanos) + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, ".000") + e.WriteString(x + "s") + return nil +} + +func (d decoder) unmarshalDuration(m protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.String { + return d.unexpectedTokenError(tok) + } + + secs, nanos, ok := parseDuration(tok.ParsedString()) + if !ok { + return d.newError(tok.Pos(), "invalid %v value %v", genid.Duration_message_fullname, tok.RawString()) + } + // Validate seconds. No need to validate nanos because parseDuration would + // have covered that already. + if secs < -maxSecondsInDuration || secs > maxSecondsInDuration { + return d.newError(tok.Pos(), "%v value out of range: %v", genid.Duration_message_fullname, tok.RawString()) + } + + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Duration_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Duration_Nanos_field_number) + + m.Set(fdSeconds, protoreflect.ValueOfInt64(secs)) + m.Set(fdNanos, protoreflect.ValueOfInt32(nanos)) + return nil +} + +// parseDuration parses the given input string for seconds and nanoseconds value +// for the Duration JSON format. The format is a decimal number with a suffix +// 's'. It can have optional plus/minus sign. There needs to be at least an +// integer or fractional part. Fractional part is limited to 9 digits only for +// nanoseconds precision, regardless of whether there are trailing zero digits. +// Example values are 1s, 0.1s, 1.s, .1s, +1s, -1s, -.1s. +func parseDuration(input string) (int64, int32, bool) { + b := []byte(input) + size := len(b) + if size < 2 { + return 0, 0, false + } + if b[size-1] != 's' { + return 0, 0, false + } + b = b[:size-1] + + // Read optional plus/minus symbol. + var neg bool + switch b[0] { + case '-': + neg = true + b = b[1:] + case '+': + b = b[1:] + } + if len(b) == 0 { + return 0, 0, false + } + + // Read the integer part. + var intp []byte + switch { + case b[0] == '0': + b = b[1:] + + case '1' <= b[0] && b[0] <= '9': + intp = b[0:] + b = b[1:] + n := 1 + for len(b) > 0 && '0' <= b[0] && b[0] <= '9' { + n++ + b = b[1:] + } + intp = intp[:n] + + case b[0] == '.': + // Continue below. + + default: + return 0, 0, false + } + + hasFrac := false + var frac [9]byte + if len(b) > 0 { + if b[0] != '.' { + return 0, 0, false + } + // Read the fractional part. + b = b[1:] + n := 0 + for len(b) > 0 && n < 9 && '0' <= b[0] && b[0] <= '9' { + frac[n] = b[0] + n++ + b = b[1:] + } + // It is not valid if there are more bytes left. + if len(b) > 0 { + return 0, 0, false + } + // Pad fractional part with 0s. + for i := n; i < 9; i++ { + frac[i] = '0' + } + hasFrac = true + } + + var secs int64 + if len(intp) > 0 { + var err error + secs, err = strconv.ParseInt(string(intp), 10, 64) + if err != nil { + return 0, 0, false + } + } + + var nanos int64 + if hasFrac { + nanob := bytes.TrimLeft(frac[:], "0") + if len(nanob) > 0 { + var err error + nanos, err = strconv.ParseInt(string(nanob), 10, 32) + if err != nil { + return 0, 0, false + } + } + } + + if neg { + if secs > 0 { + secs = -secs + } + if nanos > 0 { + nanos = -nanos + } + } + return secs, int32(nanos), true +} + +// The JSON representation for a Timestamp is a JSON string in the RFC 3339 +// format, i.e. "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z" where +// {year} is always expressed using four digits while {month}, {day}, {hour}, +// {min}, and {sec} are zero-padded to two digits each. The fractional seconds, +// which can go up to 9 digits, up to 1 nanosecond resolution, is optional. The +// "Z" suffix indicates the timezone ("UTC"); the timezone is required. Encoding +// should always use UTC (as indicated by "Z") and a decoder should be able to +// accept both UTC and other timezones (as indicated by an offset). +// +// Timestamp.seconds must be from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z +// inclusive. +// Timestamp.nanos must be from 0 to 999,999,999 inclusive. + +const ( + maxTimestampSeconds = 253402300799 + minTimestampSeconds = -62135596800 +) + +func (e encoder) marshalTimestamp(m protoreflect.Message) error { + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Timestamp_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Timestamp_Nanos_field_number) + + secsVal := m.Get(fdSeconds) + nanosVal := m.Get(fdNanos) + secs := secsVal.Int() + nanos := nanosVal.Int() + if secs < minTimestampSeconds || secs > maxTimestampSeconds { + return errors.New("%s: seconds out of range %v", genid.Timestamp_message_fullname, secs) + } + if nanos < 0 || nanos > secondsInNanos { + return errors.New("%s: nanos out of range %v", genid.Timestamp_message_fullname, nanos) + } + // Uses RFC 3339, where generated output will be Z-normalized and uses 0, 3, + // 6 or 9 fractional digits. + t := time.Unix(secs, nanos).UTC() + x := t.Format("2006-01-02T15:04:05.000000000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, ".000") + e.WriteString(x + "Z") + return nil +} + +func (d decoder) unmarshalTimestamp(m protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.String { + return d.unexpectedTokenError(tok) + } + + s := tok.ParsedString() + t, err := time.Parse(time.RFC3339Nano, s) + if err != nil { + return d.newError(tok.Pos(), "invalid %v value %v", genid.Timestamp_message_fullname, tok.RawString()) + } + // Validate seconds. + secs := t.Unix() + if secs < minTimestampSeconds || secs > maxTimestampSeconds { + return d.newError(tok.Pos(), "%v value out of range: %v", genid.Timestamp_message_fullname, tok.RawString()) + } + // Validate subseconds. + i := strings.LastIndexByte(s, '.') // start of subsecond field + j := strings.LastIndexAny(s, "Z-+") // start of timezone field + if i >= 0 && j >= i && j-i > len(".999999999") { + return d.newError(tok.Pos(), "invalid %v value %v", genid.Timestamp_message_fullname, tok.RawString()) + } + + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Timestamp_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Timestamp_Nanos_field_number) + + m.Set(fdSeconds, protoreflect.ValueOfInt64(secs)) + m.Set(fdNanos, protoreflect.ValueOfInt32(int32(t.Nanosecond()))) + return nil +} + +// The JSON representation for a FieldMask is a JSON string where paths are +// separated by a comma. Fields name in each path are converted to/from +// lower-camel naming conventions. Encoding should fail if the path name would +// end up differently after a round-trip. + +func (e encoder) marshalFieldMask(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.FieldMask_Paths_field_number) + list := m.Get(fd).List() + paths := make([]string, 0, list.Len()) + + for i := 0; i < list.Len(); i++ { + s := list.Get(i).String() + if !protoreflect.FullName(s).IsValid() { + return errors.New("%s contains invalid path: %q", genid.FieldMask_Paths_field_fullname, s) + } + // Return error if conversion to camelCase is not reversible. + cc := strs.JSONCamelCase(s) + if s != strs.JSONSnakeCase(cc) { + return errors.New("%s contains irreversible value %q", genid.FieldMask_Paths_field_fullname, s) + } + paths = append(paths, cc) + } + + e.WriteString(strings.Join(paths, ",")) + return nil +} + +func (d decoder) unmarshalFieldMask(m protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.String { + return d.unexpectedTokenError(tok) + } + str := strings.TrimSpace(tok.ParsedString()) + if str == "" { + return nil + } + paths := strings.Split(str, ",") + + fd := m.Descriptor().Fields().ByNumber(genid.FieldMask_Paths_field_number) + list := m.Mutable(fd).List() + + for _, s0 := range paths { + s := strs.JSONSnakeCase(s0) + if strings.Contains(s0, "_") || !protoreflect.FullName(s).IsValid() { + return d.newError(tok.Pos(), "%v contains invalid path: %q", genid.FieldMask_Paths_field_fullname, s0) + } + list.Append(protoreflect.ValueOfString(s)) + } + return nil +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode.go new file mode 100644 index 00000000..d043a6eb --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode.go @@ -0,0 +1,340 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "bytes" + "fmt" + "io" + "regexp" + "unicode/utf8" + + "google.golang.org/protobuf/internal/errors" +) + +// call specifies which Decoder method was invoked. +type call uint8 + +const ( + readCall call = iota + peekCall +) + +const unexpectedFmt = "unexpected token %s" + +// ErrUnexpectedEOF means that EOF was encountered in the middle of the input. +var ErrUnexpectedEOF = errors.New("%v", io.ErrUnexpectedEOF) + +// Decoder is a token-based JSON decoder. +type Decoder struct { + // lastCall is last method called, either readCall or peekCall. + // Initial value is readCall. + lastCall call + + // lastToken contains the last read token. + lastToken Token + + // lastErr contains the last read error. + lastErr error + + // openStack is a stack containing ObjectOpen and ArrayOpen values. The + // top of stack represents the object or the array the current value is + // directly located in. + openStack []Kind + + // orig is used in reporting line and column. + orig []byte + // in contains the unconsumed input. + in []byte +} + +// NewDecoder returns a Decoder to read the given []byte. +func NewDecoder(b []byte) *Decoder { + return &Decoder{orig: b, in: b} +} + +// Peek looks ahead and returns the next token kind without advancing a read. +func (d *Decoder) Peek() (Token, error) { + defer func() { d.lastCall = peekCall }() + if d.lastCall == readCall { + d.lastToken, d.lastErr = d.Read() + } + return d.lastToken, d.lastErr +} + +// Read returns the next JSON token. +// It will return an error if there is no valid token. +func (d *Decoder) Read() (Token, error) { + const scalar = Null | Bool | Number | String + + defer func() { d.lastCall = readCall }() + if d.lastCall == peekCall { + return d.lastToken, d.lastErr + } + + tok, err := d.parseNext() + if err != nil { + return Token{}, err + } + + switch tok.kind { + case EOF: + if len(d.openStack) != 0 || + d.lastToken.kind&scalar|ObjectClose|ArrayClose == 0 { + return Token{}, ErrUnexpectedEOF + } + + case Null: + if !d.isValueNext() { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + + case Bool, Number: + if !d.isValueNext() { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + + case String: + if d.isValueNext() { + break + } + // This string token should only be for a field name. + if d.lastToken.kind&(ObjectOpen|comma) == 0 { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + if len(d.in) == 0 { + return Token{}, ErrUnexpectedEOF + } + if c := d.in[0]; c != ':' { + return Token{}, d.newSyntaxError(d.currPos(), `unexpected character %s, missing ":" after field name`, string(c)) + } + tok.kind = Name + d.consume(1) + + case ObjectOpen, ArrayOpen: + if !d.isValueNext() { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + d.openStack = append(d.openStack, tok.kind) + + case ObjectClose: + if len(d.openStack) == 0 || + d.lastToken.kind == comma || + d.openStack[len(d.openStack)-1] != ObjectOpen { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + d.openStack = d.openStack[:len(d.openStack)-1] + + case ArrayClose: + if len(d.openStack) == 0 || + d.lastToken.kind == comma || + d.openStack[len(d.openStack)-1] != ArrayOpen { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + d.openStack = d.openStack[:len(d.openStack)-1] + + case comma: + if len(d.openStack) == 0 || + d.lastToken.kind&(scalar|ObjectClose|ArrayClose) == 0 { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + } + + // Update d.lastToken only after validating token to be in the right sequence. + d.lastToken = tok + + if d.lastToken.kind == comma { + return d.Read() + } + return tok, nil +} + +// Any sequence that looks like a non-delimiter (for error reporting). +var errRegexp = regexp.MustCompile(`^([-+._a-zA-Z0-9]{1,32}|.)`) + +// parseNext parses for the next JSON token. It returns a Token object for +// different types, except for Name. It does not handle whether the next token +// is in a valid sequence or not. +func (d *Decoder) parseNext() (Token, error) { + // Trim leading spaces. + d.consume(0) + + in := d.in + if len(in) == 0 { + return d.consumeToken(EOF, 0), nil + } + + switch in[0] { + case 'n': + if n := matchWithDelim("null", in); n != 0 { + return d.consumeToken(Null, n), nil + } + + case 't': + if n := matchWithDelim("true", in); n != 0 { + return d.consumeBoolToken(true, n), nil + } + + case 'f': + if n := matchWithDelim("false", in); n != 0 { + return d.consumeBoolToken(false, n), nil + } + + case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9': + if n, ok := parseNumber(in); ok { + return d.consumeToken(Number, n), nil + } + + case '"': + s, n, err := d.parseString(in) + if err != nil { + return Token{}, err + } + return d.consumeStringToken(s, n), nil + + case '{': + return d.consumeToken(ObjectOpen, 1), nil + + case '}': + return d.consumeToken(ObjectClose, 1), nil + + case '[': + return d.consumeToken(ArrayOpen, 1), nil + + case ']': + return d.consumeToken(ArrayClose, 1), nil + + case ',': + return d.consumeToken(comma, 1), nil + } + return Token{}, d.newSyntaxError(d.currPos(), "invalid value %s", errRegexp.Find(in)) +} + +// newSyntaxError returns an error with line and column information useful for +// syntax errors. +func (d *Decoder) newSyntaxError(pos int, f string, x ...interface{}) error { + e := errors.New(f, x...) + line, column := d.Position(pos) + return errors.New("syntax error (line %d:%d): %v", line, column, e) +} + +// Position returns line and column number of given index of the original input. +// It will panic if index is out of range. +func (d *Decoder) Position(idx int) (line int, column int) { + b := d.orig[:idx] + line = bytes.Count(b, []byte("\n")) + 1 + if i := bytes.LastIndexByte(b, '\n'); i >= 0 { + b = b[i+1:] + } + column = utf8.RuneCount(b) + 1 // ignore multi-rune characters + return line, column +} + +// currPos returns the current index position of d.in from d.orig. +func (d *Decoder) currPos() int { + return len(d.orig) - len(d.in) +} + +// matchWithDelim matches s with the input b and verifies that the match +// terminates with a delimiter of some form (e.g., r"[^-+_.a-zA-Z0-9]"). +// As a special case, EOF is considered a delimiter. It returns the length of s +// if there is a match, else 0. +func matchWithDelim(s string, b []byte) int { + if !bytes.HasPrefix(b, []byte(s)) { + return 0 + } + + n := len(s) + if n < len(b) && isNotDelim(b[n]) { + return 0 + } + return n +} + +// isNotDelim returns true if given byte is a not delimiter character. +func isNotDelim(c byte) bool { + return (c == '-' || c == '+' || c == '.' || c == '_' || + ('a' <= c && c <= 'z') || + ('A' <= c && c <= 'Z') || + ('0' <= c && c <= '9')) +} + +// consume consumes n bytes of input and any subsequent whitespace. +func (d *Decoder) consume(n int) { + d.in = d.in[n:] + for len(d.in) > 0 { + switch d.in[0] { + case ' ', '\n', '\r', '\t': + d.in = d.in[1:] + default: + return + } + } +} + +// isValueNext returns true if next type should be a JSON value: Null, +// Number, String or Bool. +func (d *Decoder) isValueNext() bool { + if len(d.openStack) == 0 { + return d.lastToken.kind == 0 + } + + start := d.openStack[len(d.openStack)-1] + switch start { + case ObjectOpen: + return d.lastToken.kind&Name != 0 + case ArrayOpen: + return d.lastToken.kind&(ArrayOpen|comma) != 0 + } + panic(fmt.Sprintf( + "unreachable logic in Decoder.isValueNext, lastToken.kind: %v, openStack: %v", + d.lastToken.kind, start)) +} + +// consumeToken constructs a Token for given Kind with raw value derived from +// current d.in and given size, and consumes the given size-length of it. +func (d *Decoder) consumeToken(kind Kind, size int) Token { + tok := Token{ + kind: kind, + raw: d.in[:size], + pos: len(d.orig) - len(d.in), + } + d.consume(size) + return tok +} + +// consumeBoolToken constructs a Token for a Bool kind with raw value derived from +// current d.in and given size. +func (d *Decoder) consumeBoolToken(b bool, size int) Token { + tok := Token{ + kind: Bool, + raw: d.in[:size], + pos: len(d.orig) - len(d.in), + boo: b, + } + d.consume(size) + return tok +} + +// consumeStringToken constructs a Token for a String kind with raw value derived +// from current d.in and given size. +func (d *Decoder) consumeStringToken(s string, size int) Token { + tok := Token{ + kind: String, + raw: d.in[:size], + pos: len(d.orig) - len(d.in), + str: s, + } + d.consume(size) + return tok +} + +// Clone returns a copy of the Decoder for use in reading ahead the next JSON +// object, array or other values without affecting current Decoder. +func (d *Decoder) Clone() *Decoder { + ret := *d + ret.openStack = append([]Kind(nil), ret.openStack...) + return &ret +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go new file mode 100644 index 00000000..2999d713 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go @@ -0,0 +1,254 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "bytes" + "strconv" +) + +// parseNumber reads the given []byte for a valid JSON number. If it is valid, +// it returns the number of bytes. Parsing logic follows the definition in +// https://tools.ietf.org/html/rfc7159#section-6, and is based off +// encoding/json.isValidNumber function. +func parseNumber(input []byte) (int, bool) { + var n int + + s := input + if len(s) == 0 { + return 0, false + } + + // Optional - + if s[0] == '-' { + s = s[1:] + n++ + if len(s) == 0 { + return 0, false + } + } + + // Digits + switch { + case s[0] == '0': + s = s[1:] + n++ + + case '1' <= s[0] && s[0] <= '9': + s = s[1:] + n++ + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + + default: + return 0, false + } + + // . followed by 1 or more digits. + if len(s) >= 2 && s[0] == '.' && '0' <= s[1] && s[1] <= '9' { + s = s[2:] + n += 2 + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + } + + // e or E followed by an optional - or + and + // 1 or more digits. + if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') { + s = s[1:] + n++ + if s[0] == '+' || s[0] == '-' { + s = s[1:] + n++ + if len(s) == 0 { + return 0, false + } + } + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + } + + // Check that next byte is a delimiter or it is at the end. + if n < len(input) && isNotDelim(input[n]) { + return 0, false + } + + return n, true +} + +// numberParts is the result of parsing out a valid JSON number. It contains +// the parts of a number. The parts are used for integer conversion. +type numberParts struct { + neg bool + intp []byte + frac []byte + exp []byte +} + +// parseNumber constructs numberParts from given []byte. The logic here is +// similar to consumeNumber above with the difference of having to construct +// numberParts. The slice fields in numberParts are subslices of the input. +func parseNumberParts(input []byte) (numberParts, bool) { + var neg bool + var intp []byte + var frac []byte + var exp []byte + + s := input + if len(s) == 0 { + return numberParts{}, false + } + + // Optional - + if s[0] == '-' { + neg = true + s = s[1:] + if len(s) == 0 { + return numberParts{}, false + } + } + + // Digits + switch { + case s[0] == '0': + // Skip first 0 and no need to store. + s = s[1:] + + case '1' <= s[0] && s[0] <= '9': + intp = s + n := 1 + s = s[1:] + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + intp = intp[:n] + + default: + return numberParts{}, false + } + + // . followed by 1 or more digits. + if len(s) >= 2 && s[0] == '.' && '0' <= s[1] && s[1] <= '9' { + frac = s[1:] + n := 1 + s = s[2:] + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + frac = frac[:n] + } + + // e or E followed by an optional - or + and + // 1 or more digits. + if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') { + s = s[1:] + exp = s + n := 0 + if s[0] == '+' || s[0] == '-' { + s = s[1:] + n++ + if len(s) == 0 { + return numberParts{}, false + } + } + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + exp = exp[:n] + } + + return numberParts{ + neg: neg, + intp: intp, + frac: bytes.TrimRight(frac, "0"), // Remove unnecessary 0s to the right. + exp: exp, + }, true +} + +// normalizeToIntString returns an integer string in normal form without the +// E-notation for given numberParts. It will return false if it is not an +// integer or if the exponent exceeds than max/min int value. +func normalizeToIntString(n numberParts) (string, bool) { + intpSize := len(n.intp) + fracSize := len(n.frac) + + if intpSize == 0 && fracSize == 0 { + return "0", true + } + + var exp int + if len(n.exp) > 0 { + i, err := strconv.ParseInt(string(n.exp), 10, 32) + if err != nil { + return "", false + } + exp = int(i) + } + + var num []byte + if exp >= 0 { + // For positive E, shift fraction digits into integer part and also pad + // with zeroes as needed. + + // If there are more digits in fraction than the E value, then the + // number is not an integer. + if fracSize > exp { + return "", false + } + + // Make sure resulting digits are within max value limit to avoid + // unnecessarily constructing a large byte slice that may simply fail + // later on. + const maxDigits = 20 // Max uint64 value has 20 decimal digits. + if intpSize+exp > maxDigits { + return "", false + } + + // Set cap to make a copy of integer part when appended. + num = n.intp[:len(n.intp):len(n.intp)] + num = append(num, n.frac...) + for i := 0; i < exp-fracSize; i++ { + num = append(num, '0') + } + } else { + // For negative E, shift digits in integer part out. + + // If there are fractions, then the number is not an integer. + if fracSize > 0 { + return "", false + } + + // index is where the decimal point will be after adjusting for negative + // exponent. + index := intpSize + exp + if index < 0 { + return "", false + } + + num = n.intp + // If any of the digits being shifted to the right of the decimal point + // is non-zero, then the number is not an integer. + for i := index; i < intpSize; i++ { + if num[i] != '0' { + return "", false + } + } + num = num[:index] + } + + if n.neg { + return "-" + string(num), true + } + return string(num), true +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go new file mode 100644 index 00000000..f7fea7d8 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go @@ -0,0 +1,91 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "strconv" + "unicode" + "unicode/utf16" + "unicode/utf8" + + "google.golang.org/protobuf/internal/strs" +) + +func (d *Decoder) parseString(in []byte) (string, int, error) { + in0 := in + if len(in) == 0 { + return "", 0, ErrUnexpectedEOF + } + if in[0] != '"' { + return "", 0, d.newSyntaxError(d.currPos(), "invalid character %q at start of string", in[0]) + } + in = in[1:] + i := indexNeedEscapeInBytes(in) + in, out := in[i:], in[:i:i] // set cap to prevent mutations + for len(in) > 0 { + switch r, n := utf8.DecodeRune(in); { + case r == utf8.RuneError && n == 1: + return "", 0, d.newSyntaxError(d.currPos(), "invalid UTF-8 in string") + case r < ' ': + return "", 0, d.newSyntaxError(d.currPos(), "invalid character %q in string", r) + case r == '"': + in = in[1:] + n := len(in0) - len(in) + return string(out), n, nil + case r == '\\': + if len(in) < 2 { + return "", 0, ErrUnexpectedEOF + } + switch r := in[1]; r { + case '"', '\\', '/': + in, out = in[2:], append(out, r) + case 'b': + in, out = in[2:], append(out, '\b') + case 'f': + in, out = in[2:], append(out, '\f') + case 'n': + in, out = in[2:], append(out, '\n') + case 'r': + in, out = in[2:], append(out, '\r') + case 't': + in, out = in[2:], append(out, '\t') + case 'u': + if len(in) < 6 { + return "", 0, ErrUnexpectedEOF + } + v, err := strconv.ParseUint(string(in[2:6]), 16, 16) + if err != nil { + return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:6]) + } + in = in[6:] + + r := rune(v) + if utf16.IsSurrogate(r) { + if len(in) < 6 { + return "", 0, ErrUnexpectedEOF + } + v, err := strconv.ParseUint(string(in[2:6]), 16, 16) + r = utf16.DecodeRune(r, rune(v)) + if in[0] != '\\' || in[1] != 'u' || + r == unicode.ReplacementChar || err != nil { + return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:6]) + } + in = in[6:] + } + out = append(out, string(r)...) + default: + return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:2]) + } + default: + i := indexNeedEscapeInBytes(in[n:]) + in, out = in[n+i:], append(out, in[:n+i]...) + } + } + return "", 0, ErrUnexpectedEOF +} + +// indexNeedEscapeInBytes returns the index of the character that needs +// escaping. If no characters need escaping, this returns the input length. +func indexNeedEscapeInBytes(b []byte) int { return indexNeedEscapeInString(strs.UnsafeString(b)) } diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go new file mode 100644 index 00000000..50578d65 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go @@ -0,0 +1,192 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "bytes" + "fmt" + "strconv" +) + +// Kind represents a token kind expressible in the JSON format. +type Kind uint16 + +const ( + Invalid Kind = (1 << iota) / 2 + EOF + Null + Bool + Number + String + Name + ObjectOpen + ObjectClose + ArrayOpen + ArrayClose + + // comma is only for parsing in between tokens and + // does not need to be exported. + comma +) + +func (k Kind) String() string { + switch k { + case EOF: + return "eof" + case Null: + return "null" + case Bool: + return "bool" + case Number: + return "number" + case String: + return "string" + case ObjectOpen: + return "{" + case ObjectClose: + return "}" + case Name: + return "name" + case ArrayOpen: + return "[" + case ArrayClose: + return "]" + case comma: + return "," + } + return "" +} + +// Token provides a parsed token kind and value. +// +// Values are provided by the difference accessor methods. The accessor methods +// Name, Bool, and ParsedString will panic if called on the wrong kind. There +// are different accessor methods for the Number kind for converting to the +// appropriate Go numeric type and those methods have the ok return value. +type Token struct { + // Token kind. + kind Kind + // pos provides the position of the token in the original input. + pos int + // raw bytes of the serialized token. + // This is a subslice into the original input. + raw []byte + // boo is parsed boolean value. + boo bool + // str is parsed string value. + str string +} + +// Kind returns the token kind. +func (t Token) Kind() Kind { + return t.kind +} + +// RawString returns the read value in string. +func (t Token) RawString() string { + return string(t.raw) +} + +// Pos returns the token position from the input. +func (t Token) Pos() int { + return t.pos +} + +// Name returns the object name if token is Name, else it panics. +func (t Token) Name() string { + if t.kind == Name { + return t.str + } + panic(fmt.Sprintf("Token is not a Name: %v", t.RawString())) +} + +// Bool returns the bool value if token kind is Bool, else it panics. +func (t Token) Bool() bool { + if t.kind == Bool { + return t.boo + } + panic(fmt.Sprintf("Token is not a Bool: %v", t.RawString())) +} + +// ParsedString returns the string value for a JSON string token or the read +// value in string if token is not a string. +func (t Token) ParsedString() string { + if t.kind == String { + return t.str + } + panic(fmt.Sprintf("Token is not a String: %v", t.RawString())) +} + +// Float returns the floating-point number if token kind is Number. +// +// The floating-point precision is specified by the bitSize parameter: 32 for +// float32 or 64 for float64. If bitSize=32, the result still has type float64, +// but it will be convertible to float32 without changing its value. It will +// return false if the number exceeds the floating point limits for given +// bitSize. +func (t Token) Float(bitSize int) (float64, bool) { + if t.kind != Number { + return 0, false + } + f, err := strconv.ParseFloat(t.RawString(), bitSize) + if err != nil { + return 0, false + } + return f, true +} + +// Int returns the signed integer number if token is Number. +// +// The given bitSize specifies the integer type that the result must fit into. +// It returns false if the number is not an integer value or if the result +// exceeds the limits for given bitSize. +func (t Token) Int(bitSize int) (int64, bool) { + s, ok := t.getIntStr() + if !ok { + return 0, false + } + n, err := strconv.ParseInt(s, 10, bitSize) + if err != nil { + return 0, false + } + return n, true +} + +// Uint returns the signed integer number if token is Number. +// +// The given bitSize specifies the unsigned integer type that the result must +// fit into. It returns false if the number is not an unsigned integer value +// or if the result exceeds the limits for given bitSize. +func (t Token) Uint(bitSize int) (uint64, bool) { + s, ok := t.getIntStr() + if !ok { + return 0, false + } + n, err := strconv.ParseUint(s, 10, bitSize) + if err != nil { + return 0, false + } + return n, true +} + +func (t Token) getIntStr() (string, bool) { + if t.kind != Number { + return "", false + } + parts, ok := parseNumberParts(t.raw) + if !ok { + return "", false + } + return normalizeToIntString(parts) +} + +// TokenEquals returns true if given Tokens are equal, else false. +func TokenEquals(x, y Token) bool { + return x.kind == y.kind && + x.pos == y.pos && + bytes.Equal(x.raw, y.raw) && + x.boo == y.boo && + x.str == y.str +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/encode.go b/vendor/google.golang.org/protobuf/internal/encoding/json/encode.go new file mode 100644 index 00000000..934f2dcb --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/encode.go @@ -0,0 +1,278 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "math" + "math/bits" + "strconv" + "strings" + "unicode/utf8" + + "google.golang.org/protobuf/internal/detrand" + "google.golang.org/protobuf/internal/errors" +) + +// kind represents an encoding type. +type kind uint8 + +const ( + _ kind = (1 << iota) / 2 + name + scalar + objectOpen + objectClose + arrayOpen + arrayClose +) + +// Encoder provides methods to write out JSON constructs and values. The user is +// responsible for producing valid sequences of JSON constructs and values. +type Encoder struct { + indent string + lastKind kind + indents []byte + out []byte +} + +// NewEncoder returns an Encoder. +// +// If indent is a non-empty string, it causes every entry for an Array or Object +// to be preceded by the indent and trailed by a newline. +func NewEncoder(buf []byte, indent string) (*Encoder, error) { + e := &Encoder{ + out: buf, + } + if len(indent) > 0 { + if strings.Trim(indent, " \t") != "" { + return nil, errors.New("indent may only be composed of space or tab characters") + } + e.indent = indent + } + return e, nil +} + +// Bytes returns the content of the written bytes. +func (e *Encoder) Bytes() []byte { + return e.out +} + +// WriteNull writes out the null value. +func (e *Encoder) WriteNull() { + e.prepareNext(scalar) + e.out = append(e.out, "null"...) +} + +// WriteBool writes out the given boolean value. +func (e *Encoder) WriteBool(b bool) { + e.prepareNext(scalar) + if b { + e.out = append(e.out, "true"...) + } else { + e.out = append(e.out, "false"...) + } +} + +// WriteString writes out the given string in JSON string value. Returns error +// if input string contains invalid UTF-8. +func (e *Encoder) WriteString(s string) error { + e.prepareNext(scalar) + var err error + if e.out, err = appendString(e.out, s); err != nil { + return err + } + return nil +} + +// Sentinel error used for indicating invalid UTF-8. +var errInvalidUTF8 = errors.New("invalid UTF-8") + +func appendString(out []byte, in string) ([]byte, error) { + out = append(out, '"') + i := indexNeedEscapeInString(in) + in, out = in[i:], append(out, in[:i]...) + for len(in) > 0 { + switch r, n := utf8.DecodeRuneInString(in); { + case r == utf8.RuneError && n == 1: + return out, errInvalidUTF8 + case r < ' ' || r == '"' || r == '\\': + out = append(out, '\\') + switch r { + case '"', '\\': + out = append(out, byte(r)) + case '\b': + out = append(out, 'b') + case '\f': + out = append(out, 'f') + case '\n': + out = append(out, 'n') + case '\r': + out = append(out, 'r') + case '\t': + out = append(out, 't') + default: + out = append(out, 'u') + out = append(out, "0000"[1+(bits.Len32(uint32(r))-1)/4:]...) + out = strconv.AppendUint(out, uint64(r), 16) + } + in = in[n:] + default: + i := indexNeedEscapeInString(in[n:]) + in, out = in[n+i:], append(out, in[:n+i]...) + } + } + out = append(out, '"') + return out, nil +} + +// indexNeedEscapeInString returns the index of the character that needs +// escaping. If no characters need escaping, this returns the input length. +func indexNeedEscapeInString(s string) int { + for i, r := range s { + if r < ' ' || r == '\\' || r == '"' || r == utf8.RuneError { + return i + } + } + return len(s) +} + +// WriteFloat writes out the given float and bitSize in JSON number value. +func (e *Encoder) WriteFloat(n float64, bitSize int) { + e.prepareNext(scalar) + e.out = appendFloat(e.out, n, bitSize) +} + +// appendFloat formats given float in bitSize, and appends to the given []byte. +func appendFloat(out []byte, n float64, bitSize int) []byte { + switch { + case math.IsNaN(n): + return append(out, `"NaN"`...) + case math.IsInf(n, +1): + return append(out, `"Infinity"`...) + case math.IsInf(n, -1): + return append(out, `"-Infinity"`...) + } + + // JSON number formatting logic based on encoding/json. + // See floatEncoder.encode for reference. + fmt := byte('f') + if abs := math.Abs(n); abs != 0 { + if bitSize == 64 && (abs < 1e-6 || abs >= 1e21) || + bitSize == 32 && (float32(abs) < 1e-6 || float32(abs) >= 1e21) { + fmt = 'e' + } + } + out = strconv.AppendFloat(out, n, fmt, -1, bitSize) + if fmt == 'e' { + n := len(out) + if n >= 4 && out[n-4] == 'e' && out[n-3] == '-' && out[n-2] == '0' { + out[n-2] = out[n-1] + out = out[:n-1] + } + } + return out +} + +// WriteInt writes out the given signed integer in JSON number value. +func (e *Encoder) WriteInt(n int64) { + e.prepareNext(scalar) + e.out = strconv.AppendInt(e.out, n, 10) +} + +// WriteUint writes out the given unsigned integer in JSON number value. +func (e *Encoder) WriteUint(n uint64) { + e.prepareNext(scalar) + e.out = strconv.AppendUint(e.out, n, 10) +} + +// StartObject writes out the '{' symbol. +func (e *Encoder) StartObject() { + e.prepareNext(objectOpen) + e.out = append(e.out, '{') +} + +// EndObject writes out the '}' symbol. +func (e *Encoder) EndObject() { + e.prepareNext(objectClose) + e.out = append(e.out, '}') +} + +// WriteName writes out the given string in JSON string value and the name +// separator ':'. Returns error if input string contains invalid UTF-8, which +// should not be likely as protobuf field names should be valid. +func (e *Encoder) WriteName(s string) error { + e.prepareNext(name) + var err error + // Append to output regardless of error. + e.out, err = appendString(e.out, s) + e.out = append(e.out, ':') + return err +} + +// StartArray writes out the '[' symbol. +func (e *Encoder) StartArray() { + e.prepareNext(arrayOpen) + e.out = append(e.out, '[') +} + +// EndArray writes out the ']' symbol. +func (e *Encoder) EndArray() { + e.prepareNext(arrayClose) + e.out = append(e.out, ']') +} + +// prepareNext adds possible comma and indentation for the next value based +// on last type and indent option. It also updates lastKind to next. +func (e *Encoder) prepareNext(next kind) { + defer func() { + // Set lastKind to next. + e.lastKind = next + }() + + if len(e.indent) == 0 { + // Need to add comma on the following condition. + if e.lastKind&(scalar|objectClose|arrayClose) != 0 && + next&(name|scalar|objectOpen|arrayOpen) != 0 { + e.out = append(e.out, ',') + // For single-line output, add a random extra space after each + // comma to make output unstable. + if detrand.Bool() { + e.out = append(e.out, ' ') + } + } + return + } + + switch { + case e.lastKind&(objectOpen|arrayOpen) != 0: + // If next type is NOT closing, add indent and newline. + if next&(objectClose|arrayClose) == 0 { + e.indents = append(e.indents, e.indent...) + e.out = append(e.out, '\n') + e.out = append(e.out, e.indents...) + } + + case e.lastKind&(scalar|objectClose|arrayClose) != 0: + switch { + // If next type is either a value or name, add comma and newline. + case next&(name|scalar|objectOpen|arrayOpen) != 0: + e.out = append(e.out, ',', '\n') + + // If next type is a closing object or array, adjust indentation. + case next&(objectClose|arrayClose) != 0: + e.indents = e.indents[:len(e.indents)-len(e.indent)] + e.out = append(e.out, '\n') + } + e.out = append(e.out, e.indents...) + + case e.lastKind&name != 0: + e.out = append(e.out, ' ') + // For multi-line output, add a random extra space after key: to make + // output unstable. + if detrand.Bool() { + e.out = append(e.out, ' ') + } + } +} diff --git a/vendor/modules.txt b/vendor/modules.txt index f2a80ff0..03f7cd84 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -11,8 +11,9 @@ github.com/davecgh/go-spew/spew # github.com/go-logr/logr v1.2.0 ## explicit; go 1.16 github.com/go-logr/logr -# github.com/golang/protobuf v1.5.0 +# github.com/golang/protobuf v1.5.3 ## explicit; go 1.9 +github.com/golang/protobuf/jsonpb github.com/golang/protobuf/proto github.com/golang/protobuf/ptypes github.com/golang/protobuf/ptypes/any @@ -99,7 +100,7 @@ github.com/stretchr/testify/require golang.org/x/mod/internal/lazyregexp golang.org/x/mod/module golang.org/x/mod/semver -# golang.org/x/net v0.7.0 +# golang.org/x/net v0.9.0 ## explicit; go 1.17 golang.org/x/net/http/httpguts golang.org/x/net/http2 @@ -114,7 +115,7 @@ golang.org/x/sys/internal/unsafeheader golang.org/x/sys/unix golang.org/x/sys/windows golang.org/x/sys/windows/svc -# golang.org/x/text v0.7.0 +# golang.org/x/text v0.9.0 ## explicit; go 1.17 golang.org/x/text/secure/bidirule golang.org/x/text/transform @@ -142,11 +143,11 @@ golang.org/x/tools/internal/pkgbits golang.org/x/tools/internal/tokeninternal golang.org/x/tools/internal/typeparams golang.org/x/tools/internal/typesinternal -# google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 -## explicit; go 1.11 +# google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 +## explicit; go 1.19 google.golang.org/genproto/googleapis/rpc/status -# google.golang.org/grpc v1.38.0 -## explicit; go 1.11 +# google.golang.org/grpc v1.57.0 +## explicit; go 1.17 google.golang.org/grpc google.golang.org/grpc/attributes google.golang.org/grpc/backoff @@ -155,14 +156,17 @@ google.golang.org/grpc/balancer/base google.golang.org/grpc/balancer/grpclb/state google.golang.org/grpc/balancer/roundrobin google.golang.org/grpc/binarylog/grpc_binarylog_v1 +google.golang.org/grpc/channelz google.golang.org/grpc/codes google.golang.org/grpc/connectivity google.golang.org/grpc/credentials +google.golang.org/grpc/credentials/insecure google.golang.org/grpc/encoding google.golang.org/grpc/encoding/proto google.golang.org/grpc/grpclog google.golang.org/grpc/internal google.golang.org/grpc/internal/backoff +google.golang.org/grpc/internal/balancer/gracefulswitch google.golang.org/grpc/internal/balancerload google.golang.org/grpc/internal/binarylog google.golang.org/grpc/internal/buffer @@ -174,6 +178,7 @@ google.golang.org/grpc/internal/grpcrand google.golang.org/grpc/internal/grpcsync google.golang.org/grpc/internal/grpcutil google.golang.org/grpc/internal/metadata +google.golang.org/grpc/internal/pretty google.golang.org/grpc/internal/resolver google.golang.org/grpc/internal/resolver/dns google.golang.org/grpc/internal/resolver/passthrough @@ -193,12 +198,14 @@ google.golang.org/grpc/status google.golang.org/grpc/tap # google.golang.org/protobuf v1.31.0 ## explicit; go 1.11 +google.golang.org/protobuf/encoding/protojson google.golang.org/protobuf/encoding/prototext google.golang.org/protobuf/encoding/protowire google.golang.org/protobuf/internal/descfmt google.golang.org/protobuf/internal/descopts google.golang.org/protobuf/internal/detrand google.golang.org/protobuf/internal/encoding/defval +google.golang.org/protobuf/internal/encoding/json google.golang.org/protobuf/internal/encoding/messageset google.golang.org/protobuf/internal/encoding/tag google.golang.org/protobuf/internal/encoding/text