add etcd layer

.travis.yml

@@ -10,6 +10,8 @@ before_install:
   - go get -v github.com/axw/gocov/gocov
   - go get -v github.com/mattn/goveralls
   - if ! go get code.google.com/p/go.tools/cmd/cover; then go get golang.org/x/tools/cmd/cover; fi
+  - bash travis/install_etcd.sh &
+  - sleep 3
 script:
   - go get -u ./...
   - goveralls -v -service travis-ci -repotoken $COVERALLS_TOKEN || go test -v

go.mod

@@ -4,17 +4,38 @@ go 1.12
 
 require (
 	github.com/BurntSushi/toml v0.3.1
+	github.com/coreos/bbolt v1.3.3 // indirect
+	github.com/coreos/etcd v3.3.13+incompatible
+	github.com/coreos/go-semver v0.3.0 // indirect
+	github.com/coreos/go-systemd v0.0.0-20190620071333-e64a0ec8b42a // indirect
+	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
+	github.com/etcd-io/etcd v3.3.13+incompatible
 	github.com/fsnotify/fsnotify v1.4.7
+	github.com/gogo/protobuf v1.2.1 // indirect
+	github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect
+	github.com/google/btree v1.0.0 // indirect
 	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
-	github.com/kr/pretty v0.1.0 // indirect
-	github.com/kr/pty v1.1.5 // indirect
+	github.com/gorilla/websocket v1.4.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway v1.9.2 // indirect
+	github.com/jonboulle/clockwork v0.1.0 // indirect
+	github.com/prometheus/client_golang v1.0.0 // indirect
 	github.com/smartystreets/assertions v1.0.0 // indirect
 	github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a
+	github.com/soheilhy/cmux v0.1.4 // indirect
+	github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect
+	github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
+	go.etcd.io/bbolt v1.3.3 // indirect
+	go.uber.org/atomic v1.4.0 // indirect
+	go.uber.org/multierr v1.1.0 // indirect
+	go.uber.org/zap v1.10.0 // indirect
 	golang.org/x/crypto v0.0.0-20190618222545-ea8f1a30c443
 	golang.org/x/net v0.0.0-20190619014844-b5b0513f8c1b // indirect
 	golang.org/x/sys v0.0.0-20190619183051-17bc6164aac4 // indirect
 	golang.org/x/text v0.3.2 // indirect
-	golang.org/x/tools v0.0.0-20190619215442-4adf7a708c2d // indirect
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
+	google.golang.org/grpc v1.21.1 // indirect
 	gopkg.in/yaml.v2 v2.2.2
 )