perf: Disable round trip on write (#245)

This disables the round-tripping of cached data between
serialized/deserialized JSON when caching in OPA. This
reduces the amount of time a lock is held on OPA's cache, which
helps mitigate the lock contention mentioned in
open-policy-agent/gatekeeper#2060

Signed-off-by: Max Smythe <smythe@google.com>

Signed-off-by: Max Smythe <smythe@google.com>

constraint/go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/davecgh/go-spew v1.1.1
 	github.com/golang/glog v1.0.0
 	github.com/google/go-cmp v0.5.9
-	github.com/open-policy-agent/opa v0.42.2
+	github.com/open-policy-agent/opa v0.44.0
 	github.com/spf13/cobra v1.5.0
 	github.com/spf13/pflag v1.0.5
 	k8s.io/apiextensions-apiserver v0.24.2
@@ -30,75 +30,112 @@ require (
 )
 
 require (
+	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
 	github.com/OneOfOne/xxhash v1.2.8 // indirect
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
-	github.com/agnivade/levenshtein v1.0.1 // indirect
+	github.com/agnivade/levenshtein v1.1.1 // indirect
 	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210826220005-b48c857c3a0e // indirect
 	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/blang/semver/v4 v4.0.0 // indirect
+	github.com/bytecodealliance/wasmtime-go v0.36.0 // indirect
+	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
+	github.com/cespare/xxhash v1.1.0 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/containerd/containerd v1.6.8 // indirect
+	github.com/dgraph-io/badger/v3 v3.2103.2 // indirect
+	github.com/dgraph-io/ristretto v0.1.0 // indirect
+	github.com/docker/cli v20.10.17+incompatible // indirect
+	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/docker/docker v20.10.17+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.6.4 // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-metrics v0.0.1 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/emicklei/go-restful v2.9.5+incompatible // indirect
 	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
 	github.com/felixge/httpsnoop v1.0.2 // indirect
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
 	github.com/ghodss/yaml v1.0.0 // indirect
+	github.com/go-ini/ini v1.67.0 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.19.6 // indirect
 	github.com/go-openapi/swag v0.19.15 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/cel-go v0.10.1 // indirect
 	github.com/google/flatbuffers v2.0.6+incompatible // indirect
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/google/uuid v1.2.0 // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.15.1 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-runewidth v0.0.9 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
 	github.com/mitchellh/mapstructure v1.4.3 // indirect
+	github.com/moby/locker v1.0.1 // indirect
+	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799 // indirect
+	github.com/peterh/liner v0.0.0-20170211195444-bf27d3ba8e1d // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/prometheus/client_golang v1.12.2 // indirect
+	github.com/prometheus/client_golang v1.13.0 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.33.0 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
+	github.com/sirupsen/logrus v1.9.0 // indirect
 	github.com/stoewer/go-strcase v1.2.0 // indirect
+	github.com/tchap/go-patricia/v2 v2.3.1 // indirect
 	github.com/vektah/gqlparser/v2 v2.4.5 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/yashtewari/glob-intersection v0.1.0 // indirect
+	go.opencensus.io v0.23.0 // indirect
 	go.opentelemetry.io/contrib v0.20.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.32.0 // indirect
 	go.opentelemetry.io/otel v1.7.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp v0.20.0 // indirect
-	go.opentelemetry.io/otel/metric v0.28.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.7.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.7.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.7.0 // indirect
+	go.opentelemetry.io/otel/metric v0.30.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.7.0 // indirect
 	go.opentelemetry.io/otel/sdk/export/metric v0.20.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v0.20.0 // indirect
 	go.opentelemetry.io/otel/trace v1.7.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.16.0 // indirect
+	go.uber.org/automaxprocs v1.5.1 // indirect
 	golang.org/x/net v0.0.0-20220401154927-543a649e0bdd // indirect
 	golang.org/x/oauth2 v0.0.0-20220309155454-6242fa91716a // indirect
-	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad // indirect
+	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
+	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20220224211638-0e9765cccd65 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20220401154344-7eda02b0f484 // indirect
-	google.golang.org/grpc v1.47.0 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
+	google.golang.org/grpc v1.49.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
@@ -107,6 +144,7 @@ require (
 	k8s.io/component-base v0.24.2 // indirect
 	k8s.io/klog/v2 v2.60.1 // indirect
 	k8s.io/kube-openapi v0.0.0-20220328201542-3ee0da9b0b42 // indirect
+	oras.land/oras-go v1.2.0 // indirect
 	sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.30 // indirect
 	sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2 // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect