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Bump grpc from 1.7.5 to 1.13.0

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This commit is contained in:
saad-ali
2018-11-13 17:37:19 -08:00
parent c63476d0c4
commit 9d4810f25a
97 changed files with 123377 additions and 4266 deletions
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121
Godeps/Godeps.json generated
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@@ -3752,98 +3752,143 @@
},
{
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},
{
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"Comment": "v1.13.0",
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},
{
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},
{
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},
{
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},
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},
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},
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},
{
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},
{
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},
{
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{
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},
{
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},
{
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{
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},
{
"ImportPath": "gopkg.in/gcfg.v1",

114331
Godeps/LICENSES generated
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72
staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json generated
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@@ -820,79 +820,111 @@
},
{
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},
{
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},
{
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},
{
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},
{
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},
{
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},
{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
{
"ImportPath": "gopkg.in/inf.v0",

72
staging/src/k8s.io/apiserver/Godeps/Godeps.json generated
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@@ -812,79 +812,111 @@
},
{
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{
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},
{
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},
{
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{
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{
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70
staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json generated
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@@ -416,75 +416,107 @@
},
{
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{
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{
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{
"ImportPath": "google.golang.org/grpc/codes",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/connectivity",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/credentials",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"ImportPath": "google.golang.org/grpc/encoding",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/encoding/proto",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/grpclog",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal/backoff",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal/channelz",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal/grpcrand",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/keepalive",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/metadata",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/naming",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/peer",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/resolver",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/resolver/dns",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/resolver/passthrough",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/stats",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/status",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/tap",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/transport",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "gopkg.in/inf.v0",

70
staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json generated
View File

@@ -388,75 +388,107 @@
},
{
"ImportPath": "google.golang.org/grpc",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/balancer",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/balancer/base",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/balancer/roundrobin",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/codes",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/connectivity",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/credentials",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"ImportPath": "google.golang.org/grpc/encoding",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/encoding/proto",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/grpclog",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal/backoff",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal/channelz",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/internal/grpcrand",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/keepalive",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/metadata",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/naming",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/peer",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/resolver",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/resolver/dns",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/resolver/passthrough",
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/stats",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/status",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/tap",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "google.golang.org/grpc/transport",
"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
},
{
"ImportPath": "gopkg.in/inf.v0",

2
test/integration/master/synthetic_master_test.go
View File

@@ -304,7 +304,7 @@ func TestObjectSizeResponses(t *testing.T) {
const DeploymentTwoMegabyteSize = 1000000
expectedMsgFor1MB := `etcdserver: request is too large`
expectedMsgFor2MB := `rpc error: code = ResourceExhausted desc = grpc: trying to send message larger than max`
expectedMsgFor2MB := `rpc error: code = ResourceExhausted desc = trying to send message larger than max`
expectedMsgForLargeAnnotation := `metadata.annotations: Too long: must have at most 262144 characters`
deployment1 := constructBody("a", DeploymentMegabyteSize, "labels", t) // >1 MB file

0
vendor/google.golang.org/grpc/.please-update generated vendored
View File

14
vendor/google.golang.org/grpc/.travis.yml generated vendored
View File

@@ -1,20 +1,24 @@
language: go
go:
- 1.6.x
- 1.7.x
- 1.8.x
- 1.9.x
- 1.10.x
matrix:
include:
- go: 1.9.x
env: ARCH=386
- go: 1.10.x
env: RUN386=1
go_import_path: google.golang.org/grpc
before_install:
- if [[ "$TRAVIS_GO_VERSION" = 1.9* && "$ARCH" != "386" ]]; then ./vet.sh -install || exit 1; fi
- if [[ -n "$RUN386" ]]; then export GOARCH=386; fi
- if [[ "$TRAVIS_GO_VERSION" = 1.10* && "$GOARCH" != "386" ]]; then ./vet.sh -install || exit 1; fi
script:
- if [[ "$TRAVIS_GO_VERSION" = 1.9* && "$ARCH" != "386" ]]; then ./vet.sh || exit 1; fi
- make test testrace
- if [[ "$TRAVIS_GO_VERSION" = 1.10* && "$GOARCH" != "386" ]]; then ./vet.sh || exit 1; fi
- make test || exit 1
- if [[ "$GOARCH" != "386" ]]; then make testrace; fi

17
vendor/google.golang.org/grpc/BUILD generated vendored
View File

@@ -11,7 +11,9 @@ go_library(
"clientconn.go",
"codec.go",
"doc.go",
"grpclb.go",
"envconfig.go",
"go16.go",
"go17.go",
"interceptor.go",
"picker_wrapper.go",
"pickfirst.go",
@@ -19,29 +21,37 @@ go_library(
"resolver_conn_wrapper.go",
"rpc_util.go",
"server.go",
"service_config.go",
"stickiness_linkedmap.go",
"stream.go",
"trace.go",
"version.go",
],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc",
importpath = "google.golang.org/grpc",
visibility = ["//visibility:public"],
deps = [
"//vendor/github.com/golang/protobuf/proto:go_default_library",
"//vendor/golang.org/x/net/context:go_default_library",
"//vendor/golang.org/x/net/http2:go_default_library",
"//vendor/golang.org/x/net/trace:go_default_library",
"//vendor/google.golang.org/grpc/balancer:go_default_library",
"//vendor/google.golang.org/grpc/balancer/roundrobin:go_default_library",
"//vendor/google.golang.org/grpc/codes:go_default_library",
"//vendor/google.golang.org/grpc/connectivity:go_default_library",
"//vendor/google.golang.org/grpc/credentials:go_default_library",
"//vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages:go_default_library",
"//vendor/google.golang.org/grpc/encoding:go_default_library",
"//vendor/google.golang.org/grpc/encoding/proto:go_default_library",
"//vendor/google.golang.org/grpc/grpclog:go_default_library",
"//vendor/google.golang.org/grpc/internal:go_default_library",
"//vendor/google.golang.org/grpc/internal/backoff:go_default_library",
"//vendor/google.golang.org/grpc/internal/channelz:go_default_library",
"//vendor/google.golang.org/grpc/keepalive:go_default_library",
"//vendor/google.golang.org/grpc/metadata:go_default_library",
"//vendor/google.golang.org/grpc/naming:go_default_library",
"//vendor/google.golang.org/grpc/peer:go_default_library",
"//vendor/google.golang.org/grpc/resolver:go_default_library",
"//vendor/google.golang.org/grpc/resolver/dns:go_default_library",
"//vendor/google.golang.org/grpc/resolver/passthrough:go_default_library",
"//vendor/google.golang.org/grpc/stats:go_default_library",
"//vendor/google.golang.org/grpc/status:go_default_library",
"//vendor/google.golang.org/grpc/tap:go_default_library",
@@ -64,6 +74,7 @@ filegroup(
"//vendor/google.golang.org/grpc/codes:all-srcs",
"//vendor/google.golang.org/grpc/connectivity:all-srcs",
"//vendor/google.golang.org/grpc/credentials:all-srcs",
"//vendor/google.golang.org/grpc/encoding:all-srcs",
"//vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages:all-srcs",
"//vendor/google.golang.org/grpc/grpclog:all-srcs",
"//vendor/google.golang.org/grpc/health:all-srcs",

6
vendor/google.golang.org/grpc/CONTRIBUTING.md generated vendored
View File

@@ -7,7 +7,7 @@ If you are new to github, please start by reading [Pull Request howto](https://h
## Legal requirements
In order to protect both you and ourselves, you will need to sign the
[Contributor License Agreement](https://cla.developers.google.com/clas).
[Contributor License Agreement](https://identity.linuxfoundation.org/projects/cncf).
## Guidelines for Pull Requests
How to get your contributions merged smoothly and quickly.
@@ -27,6 +27,10 @@ How to get your contributions merged smoothly and quickly.
- Keep your PR up to date with upstream/master (if there are merge conflicts, we can't really merge your change).
- **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
- Exceptions to the rules can be made if there's a compelling reason for doing so.

13
vendor/google.golang.org/grpc/Makefile generated vendored
View File

@@ -1,4 +1,4 @@
all: test testrace
all: vet test testrace
deps:
go get -d -v google.golang.org/grpc/...
@@ -22,11 +22,14 @@ proto:
fi
go generate google.golang.org/grpc/...
vet:
./vet.sh
test: testdeps
go test -cpu 1,4 google.golang.org/grpc/...
go test -cpu 1,4 -timeout 5m google.golang.org/grpc/...
testrace: testdeps
go test -race -cpu 1,4 google.golang.org/grpc/...
go test -race -cpu 1,4 -timeout 7m google.golang.org/grpc/...
clean:
go clean -i google.golang.org/grpc/...
@@ -39,7 +42,7 @@ clean:
updatetestdeps \
build \
proto \
vet \
test \
testrace \
clean \
coverage
clean

4
vendor/google.golang.org/grpc/README.md generated vendored
View File

@@ -1,6 +1,6 @@
# gRPC-Go
[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) [![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc)
[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) [![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc) [![GoReportCard](https://goreportcard.com/badge/grpc/grpc-go)](https://goreportcard.com/report/github.com/grpc/grpc-go)
The Go implementation of [gRPC](https://grpc.io/): A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the [gRPC Quick Start: Go](https://grpc.io/docs/quickstart/go.html) guide.
@@ -16,7 +16,7 @@ $ go get -u google.golang.org/grpc
Prerequisites
-------------
This requires Go 1.7 or later.
This requires Go 1.6 or later. Go 1.7 will be required soon.
Constraints
-----------

68
vendor/google.golang.org/grpc/backoff.go generated vendored
View File

@@ -16,83 +16,23 @@
*
*/
// See internal/backoff package for the backoff implementation. This file is
// kept for the exported types and API backward compatility.
package grpc
import (
"math/rand"
"time"
)
// DefaultBackoffConfig uses values specified for backoff in
// https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
var (
DefaultBackoffConfig = BackoffConfig{
var DefaultBackoffConfig = BackoffConfig{
MaxDelay: 120 * time.Second,
baseDelay: 1.0 * time.Second,
factor: 1.6,
jitter: 0.2,
}
)
// backoffStrategy defines the methodology for backing off after a grpc
// connection failure.
//
// This is unexported until the gRPC project decides whether or not to allow
// alternative backoff strategies. Once a decision is made, this type and its
// method may be exported.
type backoffStrategy interface {
// backoff returns the amount of time to wait before the next retry given
// the number of consecutive failures.
backoff(retries int) time.Duration
}
// BackoffConfig defines the parameters for the default gRPC backoff strategy.
type BackoffConfig struct {
// MaxDelay is the upper bound of backoff delay.
MaxDelay time.Duration
// TODO(stevvooe): The following fields are not exported, as allowing
// changes would violate the current gRPC specification for backoff. If
// gRPC decides to allow more interesting backoff strategies, these fields
// may be opened up in the future.
// baseDelay is the amount of time to wait before retrying after the first
// failure.
baseDelay time.Duration
// factor is applied to the backoff after each retry.
factor float64
// jitter provides a range to randomize backoff delays.
jitter float64
}
func setDefaults(bc *BackoffConfig) {
md := bc.MaxDelay
*bc = DefaultBackoffConfig
if md > 0 {
bc.MaxDelay = md
}
}
func (bc BackoffConfig) backoff(retries int) time.Duration {
if retries == 0 {
return bc.baseDelay
}
backoff, max := float64(bc.baseDelay), float64(bc.MaxDelay)
for backoff < max && retries > 0 {
backoff *= bc.factor
retries--
}
if backoff > max {
backoff = max
}
// Randomize backoff delays so that if a cluster of requests start at
// the same time, they won't operate in lockstep.
backoff *= 1 + bc.jitter*(rand.Float64()*2-1)
if backoff < 0 {
return 0
}
return time.Duration(backoff)
}

16
vendor/google.golang.org/grpc/balancer.go generated vendored
View File

@@ -28,10 +28,12 @@ import (
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/naming"
"google.golang.org/grpc/status"
)
// Address represents a server the client connects to.
// This is the EXPERIMENTAL API and may be changed or extended in the future.
//
// Deprecated: please use package balancer.
type Address struct {
// Addr is the server address on which a connection will be established.
Addr string
@@ -41,6 +43,8 @@ type Address struct {
}
// BalancerConfig specifies the configurations for Balancer.
//
// Deprecated: please use package balancer.
type BalancerConfig struct {
// DialCreds is the transport credential the Balancer implementation can
// use to dial to a remote load balancer server. The Balancer implementations
@@ -53,7 +57,8 @@ type BalancerConfig struct {
}
// BalancerGetOptions configures a Get call.
// This is the EXPERIMENTAL API and may be changed or extended in the future.
//
// Deprecated: please use package balancer.
type BalancerGetOptions struct {
// BlockingWait specifies whether Get should block when there is no
// connected address.
@@ -61,7 +66,8 @@ type BalancerGetOptions struct {
}
// Balancer chooses network addresses for RPCs.
// This is the EXPERIMENTAL API and may be changed or extended in the future.
//
// Deprecated: please use package balancer.
type Balancer interface {
// Start does the initialization work to bootstrap a Balancer. For example,
// this function may start the name resolution and watch the updates. It will
@@ -134,6 +140,8 @@ func downErrorf(timeout, temporary bool, format string, a ...interface{}) downEr
// RoundRobin returns a Balancer that selects addresses round-robin. It uses r to watch
// the name resolution updates and updates the addresses available correspondingly.
//
// Deprecated: please use package balancer/roundrobin.
func RoundRobin(r naming.Resolver) Balancer {
return &roundRobin{r: r}
}
@@ -310,7 +318,7 @@ func (rr *roundRobin) Get(ctx context.Context, opts BalancerGetOptions) (addr Ad
if !opts.BlockingWait {
if len(rr.addrs) == 0 {
rr.mu.Unlock()
err = Errorf(codes.Unavailable, "there is no address available")
err = status.Errorf(codes.Unavailable, "there is no address available")
return
}
// Returns the next addr on rr.addrs for failfast RPCs.

6
vendor/google.golang.org/grpc/balancer/BUILD generated vendored
View File

@@ -23,7 +23,11 @@ filegroup(
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
srcs = [
":package-srcs",
"//vendor/google.golang.org/grpc/balancer/base:all-srcs",
"//vendor/google.golang.org/grpc/balancer/roundrobin:all-srcs",
],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

86
vendor/google.golang.org/grpc/balancer/balancer.go generated vendored
View File

@@ -23,6 +23,7 @@ package balancer
import (
"errors"
"net"
"strings"
"golang.org/x/net/context"
"google.golang.org/grpc/connectivity"
@@ -33,24 +34,26 @@ import (
var (
// m is a map from name to balancer builder.
m = make(map[string]Builder)
// defaultBuilder is the default balancer to use.
defaultBuilder Builder // TODO(bar) install pickfirst as default.
)
// Register registers the balancer builder to the balancer map.
// b.Name will be used as the name registered with this builder.
// Register registers the balancer builder to the balancer map. b.Name
// (lowercased) will be used as the name registered with this builder.
//
// NOTE: this function must only be called during initialization time (i.e. in
// an init() function), and is not thread-safe. If multiple Balancers are
// registered with the same name, the one registered last will take effect.
func Register(b Builder) {
m[b.Name()] = b
m[strings.ToLower(b.Name())] = b
}
// Get returns the resolver builder registered with the given name.
// If no builder is register with the name, the default pickfirst will
// be used.
// Note that the compare is done in a case-insenstive fashion.
// If no builder is register with the name, nil will be returned.
func Get(name string) Builder {
if b, ok := m[name]; ok {
if b, ok := m[strings.ToLower(name)]; ok {
return b
}
return defaultBuilder
return nil
}
// SubConn represents a gRPC sub connection.
@@ -66,6 +69,11 @@ func Get(name string) Builder {
// When the connection encounters an error, it will reconnect immediately.
// When the connection becomes IDLE, it will not reconnect unless Connect is
// called.
//
// 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.
type SubConn interface {
// UpdateAddresses updates the addresses used in this SubConn.
// gRPC checks if currently-connected address is still in the new list.
@@ -83,6 +91,11 @@ type SubConn interface {
type NewSubConnOptions struct{}
// ClientConn represents a gRPC ClientConn.
//
// 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.
type ClientConn interface {
// NewSubConn is called by balancer to create a new SubConn.
// It doesn't block and wait for the connections to be established.
@@ -99,6 +112,9 @@ type ClientConn interface {
// on the new picker to pick new SubConn.
UpdateBalancerState(s connectivity.State, p Picker)
// ResolveNow is called by balancer to notify gRPC to do a name resolving.
ResolveNow(resolver.ResolveNowOption)
// Target returns the dial target for this ClientConn.
Target() string
}
@@ -113,6 +129,8 @@ type BuildOptions struct {
// to a remote load balancer server. The Balancer implementations
// can ignore this if it doesn't need to talk to remote balancer.
Dialer func(context.Context, string) (net.Conn, error)
// ChannelzParentID is the entity parent's channelz unique identification number.
ChannelzParentID int64
}
// Builder creates a balancer.
@@ -131,6 +149,10 @@ type PickOptions struct{}
type DoneInfo struct {
// Err is the rpc error the RPC finished with. It could be nil.
Err error
// BytesSent indicates if any bytes have been sent to the server.
BytesSent bool
// BytesReceived indicates if any byte has been received from the server.
BytesReceived bool
}
var (
@@ -143,7 +165,7 @@ var (
)
// Picker is used by gRPC to pick a SubConn to send an RPC.
// Balancer is expected to generate a new picker from its snapshot everytime its
// Balancer is expected to generate a new picker from its snapshot every time its
// internal state has changed.
//
// The pickers used by gRPC can be updated by ClientConn.UpdateBalancerState().
@@ -161,7 +183,7 @@ type Picker interface {
// If a SubConn is returned:
// - If it is READY, gRPC will send the RPC on it;
// - If it is not ready, or becomes not ready after it's returned, gRPC will block
// this call until a new picker is updated and will call pick on the new picker.
// until UpdateBalancerState() is called and will call pick on the new picker.
//
// If the returned error is not nil:
// - If the error is ErrNoSubConnAvailable, gRPC will block until UpdateBalancerState()
@@ -204,3 +226,45 @@ type Balancer interface {
// ClientConn.RemoveSubConn for its existing SubConns.
Close()
}
// 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 transientFailure.
}
// 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
case connectivity.TransientFailure:
cse.numTransientFailure += updateVal
}
}
// Evaluate.
if cse.numReady > 0 {
return connectivity.Ready
}
if cse.numConnecting > 0 {
return connectivity.Connecting
}
return connectivity.TransientFailure
}

33
vendor/google.golang.org/grpc/balancer/base/BUILD generated vendored Normal file
View File

@@ -0,0 +1,33 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = [
"balancer.go",
"base.go",
],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/balancer/base",
importpath = "google.golang.org/grpc/balancer/base",
visibility = ["//visibility:public"],
deps = [
"//vendor/golang.org/x/net/context:go_default_library",
"//vendor/google.golang.org/grpc/balancer:go_default_library",
"//vendor/google.golang.org/grpc/connectivity:go_default_library",
"//vendor/google.golang.org/grpc/grpclog:go_default_library",
"//vendor/google.golang.org/grpc/resolver:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

208
vendor/google.golang.org/grpc/balancer/base/balancer.go generated vendored Normal file
View File

@@ -0,0 +1,208 @@
/*
*
* Copyright 2017 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 base
import (
"golang.org/x/net/context"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/connectivity"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/resolver"
)
type baseBuilder struct {
name string
pickerBuilder PickerBuilder
}
func (bb *baseBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
return &baseBalancer{
cc: cc,
pickerBuilder: bb.pickerBuilder,
subConns: make(map[resolver.Address]balancer.SubConn),
scStates: make(map[balancer.SubConn]connectivity.State),
csEvltr: &connectivityStateEvaluator{},
// Initialize picker to a picker that always return
// ErrNoSubConnAvailable, because when state of a SubConn changes, we
// may call UpdateBalancerState with this picker.
picker: NewErrPicker(balancer.ErrNoSubConnAvailable),
}
}
func (bb *baseBuilder) Name() string {
return bb.name
}
type baseBalancer struct {
cc balancer.ClientConn
pickerBuilder PickerBuilder
csEvltr *connectivityStateEvaluator
state connectivity.State
subConns map[resolver.Address]balancer.SubConn
scStates map[balancer.SubConn]connectivity.State
picker balancer.Picker
}
func (b *baseBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) {
if err != nil {
grpclog.Infof("base.baseBalancer: HandleResolvedAddrs called with error %v", err)
return
}
grpclog.Infoln("base.baseBalancer: got new resolved addresses: ", addrs)
// addrsSet is the set converted from addrs, it's used for quick lookup of an address.
addrsSet := make(map[resolver.Address]struct{})
for _, a := range addrs {
addrsSet[a] = struct{}{}
if _, ok := b.subConns[a]; !ok {
// a is a new address (not existing in b.subConns).
sc, err := b.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
if err != nil {
grpclog.Warningf("base.baseBalancer: failed to create new SubConn: %v", err)
continue
}
b.subConns[a] = sc
b.scStates[sc] = connectivity.Idle
sc.Connect()
}
}
for a, sc := range b.subConns {
// a was removed by resolver.
if _, ok := addrsSet[a]; !ok {
b.cc.RemoveSubConn(sc)
delete(b.subConns, a)
// Keep the state of this sc in b.scStates until sc's state becomes Shutdown.
// The entry will be deleted in HandleSubConnStateChange.
}
}
}
// regeneratePicker takes a snapshot of the balancer, and generates a picker
// from it. The picker is
// - errPicker with ErrTransientFailure 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(balancer.ErrTransientFailure)
return
}
readySCs := make(map[resolver.Address]balancer.SubConn)
// Filter out all ready SCs from full subConn map.
for addr, sc := range b.subConns {
if st, ok := b.scStates[sc]; ok && st == connectivity.Ready {
readySCs[addr] = sc
}
}
b.picker = b.pickerBuilder.Build(readySCs)
}
func (b *baseBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
grpclog.Infof("base.baseBalancer: handle SubConn state change: %p, %v", sc, s)
oldS, ok := b.scStates[sc]
if !ok {
grpclog.Infof("base.baseBalancer: got state changes for an unknown SubConn: %p, %v", sc, s)
return
}
b.scStates[sc] = s
switch s {
case connectivity.Idle:
sc.Connect()
case connectivity.Shutdown:
// When an address was removed by resolver, b called RemoveSubConn but
// kept the sc's state in scStates. Remove state for this sc here.
delete(b.scStates, sc)
}
oldAggrState := b.state
b.state = b.csEvltr.recordTransition(oldS, s)
// Regenerate picker when one of the following happens:
// - this sc became ready from not-ready
// - this sc became not-ready from ready
// - the aggregated state of balancer became TransientFailure from non-TransientFailure
// - the aggregated state of balancer became non-TransientFailure from TransientFailure
if (s == connectivity.Ready) != (oldS == connectivity.Ready) ||
(b.state == connectivity.TransientFailure) != (oldAggrState == connectivity.TransientFailure) {
b.regeneratePicker()
}
b.cc.UpdateBalancerState(b.state, b.picker)
}
// Close is a nop because base balancer doesn't have internal state to clean up,
// and it doesn't need to call RemoveSubConn for the SubConns.
func (b *baseBalancer) Close() {
}
// NewErrPicker returns a picker that always returns err on Pick().
func NewErrPicker(err error) balancer.Picker {
return &errPicker{err: err}
}
type errPicker struct {
err error // Pick() always returns this err.
}
func (p *errPicker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
return nil, nil, p.err
}
// connectivityStateEvaluator gets updated by addrConns when their
// states transition, based on which it evaluates the state of
// ClientConn.
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 transientFailure.
}
// recordTransition records state change happening in every subConn and based on
// that it evaluates what aggregated state should be.
// It can only transition between Ready, Connecting and TransientFailure. Other states,
// Idle and Shutdown are transitioned into by ClientConn; in the beginning of the connection
// before any subConn is created ClientConn is in idle state. In the end when ClientConn
// closes it is in Shutdown state.
//
// recordTransition should only be called synchronously from the same goroutine.
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
}
}
// Evaluate.
if cse.numReady > 0 {
return connectivity.Ready
}
if cse.numConnecting > 0 {
return connectivity.Connecting
}
return connectivity.TransientFailure
}

52
vendor/google.golang.org/grpc/balancer/base/base.go generated vendored Normal file
View File

@@ -0,0 +1,52 @@
/*
*
* Copyright 2017 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 base defines a balancer base that can be used to build balancers with
// different picking algorithms.
//
// The base balancer creates a new SubConn for each resolved address. The
// provided picker will only be notified about READY SubConns.
//
// This package is the base of round_robin balancer, its purpose is to be used
// to build round_robin like balancers with complex picking algorithms.
// Balancers with more complicated logic should try to implement a balancer
// builder from scratch.
//
// All APIs in this package are experimental.
package base
import (
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/resolver"
)
// PickerBuilder creates balancer.Picker.
type PickerBuilder interface {
// Build takes a slice of ready SubConns, and returns a picker that will be
// used by gRPC to pick a SubConn.
Build(readySCs map[resolver.Address]balancer.SubConn) balancer.Picker
}
// NewBalancerBuilder returns a balancer builder. The balancers
// built by this builder will use the picker builder to build pickers.
func NewBalancerBuilder(name string, pb PickerBuilder) balancer.Builder {
return &baseBuilder{
name: name,
pickerBuilder: pb,
}
}

30
vendor/google.golang.org/grpc/balancer/roundrobin/BUILD generated vendored Normal file
View File

@@ -0,0 +1,30 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["roundrobin.go"],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/balancer/roundrobin",
importpath = "google.golang.org/grpc/balancer/roundrobin",
visibility = ["//visibility:public"],
deps = [
"//vendor/golang.org/x/net/context:go_default_library",
"//vendor/google.golang.org/grpc/balancer:go_default_library",
"//vendor/google.golang.org/grpc/balancer/base:go_default_library",
"//vendor/google.golang.org/grpc/grpclog:go_default_library",
"//vendor/google.golang.org/grpc/resolver:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

79
vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go generated vendored Normal file
View File

@@ -0,0 +1,79 @@
/*
*
* Copyright 2017 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 roundrobin defines a roundrobin balancer. Roundrobin balancer is
// installed as one of the default balancers in gRPC, users don't need to
// explicitly install this balancer.
package roundrobin
import (
"sync"
"golang.org/x/net/context"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/balancer/base"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/resolver"
)
// Name is the name of round_robin balancer.
const Name = "round_robin"
// newBuilder creates a new roundrobin balancer builder.
func newBuilder() balancer.Builder {
return base.NewBalancerBuilder(Name, &rrPickerBuilder{})
}
func init() {
balancer.Register(newBuilder())
}
type rrPickerBuilder struct{}
func (*rrPickerBuilder) Build(readySCs map[resolver.Address]balancer.SubConn) balancer.Picker {
grpclog.Infof("roundrobinPicker: newPicker called with readySCs: %v", readySCs)
var scs []balancer.SubConn
for _, sc := range readySCs {
scs = append(scs, sc)
}
return &rrPicker{
subConns: scs,
}
}
type rrPicker struct {
// subConns is the snapshot of the roundrobin balancer when this picker was
// 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
}
func (p *rrPicker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
if len(p.subConns) <= 0 {
return nil, nil, balancer.ErrNoSubConnAvailable
}
p.mu.Lock()
sc := p.subConns[p.next]
p.next = (p.next + 1) % len(p.subConns)
p.mu.Unlock()
return sc, nil, nil
}

68
vendor/google.golang.org/grpc/balancer_conn_wrappers.go generated vendored
View File

@@ -19,6 +19,7 @@
package grpc
import (
"fmt"
"sync"
"google.golang.org/grpc/balancer"
@@ -73,7 +74,7 @@ func (b *scStateUpdateBuffer) load() {
}
}
// get returns the channel that receives a recvMsg in the buffer.
// get returns the channel that the scStateUpdate will be sent to.
//
// Upon receiving, the caller should call load to send another
// scStateChangeTuple onto the channel if there is any.
@@ -96,6 +97,9 @@ type ccBalancerWrapper struct {
stateChangeQueue *scStateUpdateBuffer
resolverUpdateCh chan *resolverUpdate
done chan struct{}
mu sync.Mutex
subConns map[*acBalancerWrapper]struct{}
}
func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.BuildOptions) *ccBalancerWrapper {
@@ -104,21 +108,34 @@ func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.Bui
stateChangeQueue: newSCStateUpdateBuffer(),
resolverUpdateCh: make(chan *resolverUpdate, 1),
done: make(chan struct{}),
subConns: make(map[*acBalancerWrapper]struct{}),
}
go ccb.watcher()
ccb.balancer = b.Build(ccb, bopts)
return ccb
}
// watcher balancer functions sequencially, so the balancer can be implemeneted
// watcher balancer functions sequentially, so the balancer can be implemented
// lock-free.
func (ccb *ccBalancerWrapper) watcher() {
for {
select {
case t := <-ccb.stateChangeQueue.get():
ccb.stateChangeQueue.load()
select {
case <-ccb.done:
ccb.balancer.Close()
return
default:
}
ccb.balancer.HandleSubConnStateChange(t.sc, t.state)
case t := <-ccb.resolverUpdateCh:
select {
case <-ccb.done:
ccb.balancer.Close()
return
default:
}
ccb.balancer.HandleResolvedAddrs(t.addrs, t.err)
case <-ccb.done:
}
@@ -126,6 +143,13 @@ func (ccb *ccBalancerWrapper) watcher() {
select {
case <-ccb.done:
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)
}
return
default:
}
@@ -165,33 +189,54 @@ func (ccb *ccBalancerWrapper) handleResolvedAddrs(addrs []resolver.Address, err
}
func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
grpclog.Infof("ccBalancerWrapper: new subconn: %v", addrs)
if len(addrs) <= 0 {
return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list")
}
ccb.mu.Lock()
defer ccb.mu.Unlock()
if ccb.subConns == nil {
return nil, fmt.Errorf("grpc: ClientConn balancer wrapper was closed")
}
ac, err := ccb.cc.newAddrConn(addrs)
if err != nil {
return nil, err
}
acbw := &acBalancerWrapper{ac: ac}
ac.mu.Lock()
acbw.ac.mu.Lock()
ac.acbw = acbw
ac.mu.Unlock()
acbw.ac.mu.Unlock()
ccb.subConns[acbw] = struct{}{}
return acbw, nil
}
func (ccb *ccBalancerWrapper) RemoveSubConn(sc balancer.SubConn) {
grpclog.Infof("ccBalancerWrapper: removing subconn")
acbw, ok := sc.(*acBalancerWrapper)
if !ok {
return
}
ccb.mu.Lock()
defer ccb.mu.Unlock()
if ccb.subConns == nil {
return
}
delete(ccb.subConns, acbw)
ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
}
func (ccb *ccBalancerWrapper) UpdateBalancerState(s connectivity.State, p balancer.Picker) {
grpclog.Infof("ccBalancerWrapper: updating state and picker called by balancer: %v, %p", s, p)
ccb.mu.Lock()
defer ccb.mu.Unlock()
if ccb.subConns == nil {
return
}
ccb.cc.csMgr.updateState(s)
ccb.cc.blockingpicker.updatePicker(p)
}
func (ccb *ccBalancerWrapper) ResolveNow(o resolver.ResolveNowOption) {
ccb.cc.resolveNow(o)
}
func (ccb *ccBalancerWrapper) Target() string {
return ccb.cc.target
}
@@ -204,9 +249,12 @@ type acBalancerWrapper struct {
}
func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
grpclog.Infof("acBalancerWrapper: UpdateAddresses called with %v", addrs)
acbw.mu.Lock()
defer acbw.mu.Unlock()
if len(addrs) <= 0 {
acbw.ac.tearDown(errConnDrain)
return
}
if !acbw.ac.tryUpdateAddrs(addrs) {
cc := acbw.ac.cc
acbw.ac.mu.Lock()
@@ -234,7 +282,7 @@ func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
ac.acbw = acbw
ac.mu.Unlock()
if acState != connectivity.Idle {
ac.connect(false)
ac.connect()
}
}
}
@@ -242,7 +290,7 @@ func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
func (acbw *acBalancerWrapper) Connect() {
acbw.mu.Lock()
defer acbw.mu.Unlock()
acbw.ac.connect(false)
acbw.ac.connect()
}
func (acbw *acBalancerWrapper) getAddrConn() *addrConn {

83
vendor/google.golang.org/grpc/balancer_v1_wrapper.go generated vendored
View File

@@ -19,6 +19,7 @@
package grpc
import (
"strings"
"sync"
"golang.org/x/net/context"
@@ -27,6 +28,7 @@ import (
"google.golang.org/grpc/connectivity"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/resolver"
"google.golang.org/grpc/status"
)
type balancerWrapperBuilder struct {
@@ -34,7 +36,13 @@ type balancerWrapperBuilder struct {
}
func (bwb *balancerWrapperBuilder) Build(cc balancer.ClientConn, opts balancer.BuildOptions) balancer.Balancer {
bwb.b.Start(cc.Target(), BalancerConfig{
targetAddr := cc.Target()
targetSplitted := strings.Split(targetAddr, ":///")
if len(targetSplitted) >= 2 {
targetAddr = targetSplitted[1]
}
bwb.b.Start(targetAddr, BalancerConfig{
DialCreds: opts.DialCreds,
Dialer: opts.Dialer,
})
@@ -43,10 +51,11 @@ func (bwb *balancerWrapperBuilder) Build(cc balancer.ClientConn, opts balancer.B
balancer: bwb.b,
pickfirst: pickfirst,
cc: cc,
targetAddr: targetAddr,
startCh: make(chan struct{}),
conns: make(map[resolver.Address]balancer.SubConn),
connSt: make(map[balancer.SubConn]*scState),
csEvltr: &connectivityStateEvaluator{},
csEvltr: &balancer.ConnectivityStateEvaluator{},
state: connectivity.Idle,
}
cc.UpdateBalancerState(connectivity.Idle, bw)
@@ -69,10 +78,7 @@ type balancerWrapper struct {
pickfirst bool
cc balancer.ClientConn
// To aggregate the connectivity state.
csEvltr *connectivityStateEvaluator
state connectivity.State
targetAddr string // Target without the scheme.
mu sync.Mutex
conns map[resolver.Address]balancer.SubConn
@@ -82,18 +88,21 @@ type balancerWrapper struct {
// - NewSubConn is created, cc wants to notify balancer of state changes;
// - Build hasn't return, cc doesn't have access to balancer.
startCh chan struct{}
// To aggregate the connectivity state.
csEvltr *balancer.ConnectivityStateEvaluator
state connectivity.State
}
// lbWatcher watches the Notify channel of the balancer and manages
// connections accordingly.
func (bw *balancerWrapper) lbWatcher() {
<-bw.startCh
grpclog.Infof("balancerWrapper: is pickfirst: %v\n", bw.pickfirst)
notifyCh := bw.balancer.Notify()
if notifyCh == nil {
// There's no resolver in the balancer. Connect directly.
a := resolver.Address{
Addr: bw.cc.Target(),
Addr: bw.targetAddr,
Type: resolver.Backend,
}
sc, err := bw.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
@@ -103,7 +112,7 @@ func (bw *balancerWrapper) lbWatcher() {
bw.mu.Lock()
bw.conns[a] = sc
bw.connSt[sc] = &scState{
addr: Address{Addr: bw.cc.Target()},
addr: Address{Addr: bw.targetAddr},
s: connectivity.Idle,
}
bw.mu.Unlock()
@@ -165,10 +174,10 @@ func (bw *balancerWrapper) lbWatcher() {
sc.Connect()
}
} else {
oldSC.UpdateAddresses(newAddrs)
bw.mu.Lock()
bw.connSt[oldSC].addr = addrs[0]
bw.mu.Unlock()
oldSC.UpdateAddresses(newAddrs)
}
} else {
var (
@@ -221,7 +230,6 @@ func (bw *balancerWrapper) lbWatcher() {
}
func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
grpclog.Infof("balancerWrapper: handle subconn state change: %p, %v", sc, s)
bw.mu.Lock()
defer bw.mu.Unlock()
scSt, ok := bw.connSt[sc]
@@ -240,7 +248,7 @@ func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s conne
scSt.down(errConnClosing)
}
}
sa := bw.csEvltr.recordTransition(oldS, s)
sa := bw.csEvltr.RecordTransition(oldS, s)
if bw.state != sa {
bw.state = sa
}
@@ -249,7 +257,6 @@ func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s conne
// Remove state for this sc.
delete(bw.connSt, sc)
}
return
}
func (bw *balancerWrapper) HandleResolvedAddrs([]resolver.Address, error) {
@@ -262,7 +269,6 @@ func (bw *balancerWrapper) HandleResolvedAddrs([]resolver.Address, error) {
}
// There should be a resolver inside the balancer.
// All updates here, if any, are ignored.
return
}
func (bw *balancerWrapper) Close() {
@@ -274,7 +280,6 @@ func (bw *balancerWrapper) Close() {
close(bw.startCh)
}
bw.balancer.Close()
return
}
// The picker is the balancerWrapper itself.
@@ -310,58 +315,14 @@ func (bw *balancerWrapper) Pick(ctx context.Context, opts balancer.PickOptions)
Metadata: a.Metadata,
}]
if !ok && failfast {
return nil, nil, Errorf(codes.Unavailable, "there is no connection available")
return nil, nil, status.Errorf(codes.Unavailable, "there is no connection available")
}
if s, ok := bw.connSt[sc]; failfast && (!ok || s.s != connectivity.Ready) {
// If the returned sc is not ready and RPC is failfast,
// return error, and this RPC will fail.
return nil, nil, Errorf(codes.Unavailable, "there is no connection available")
return nil, nil, status.Errorf(codes.Unavailable, "there is no connection available")
}
}
return sc, done, nil
}
// connectivityStateEvaluator gets updated by addrConns when their
// states transition, based on which it evaluates the state of
// ClientConn.
type connectivityStateEvaluator struct {
mu sync.Mutex
numReady uint64 // Number of addrConns in ready state.
numConnecting uint64 // Number of addrConns in connecting state.
numTransientFailure uint64 // Number of addrConns in transientFailure.
}
// recordTransition records state change happening in every subConn and based on
// that it evaluates what aggregated state should be.
// It can only transition between Ready, Connecting and TransientFailure. Other states,
// Idle and Shutdown are transitioned into by ClientConn; in the beginning of the connection
// before any subConn is created ClientConn is in idle state. In the end when ClientConn
// closes it is in Shutdown state.
// TODO Note that in later releases, a ClientConn with no activity will be put into an Idle state.
func (cse *connectivityStateEvaluator) recordTransition(oldState, newState connectivity.State) connectivity.State {
cse.mu.Lock()
defer cse.mu.Unlock()
// 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
}
}
// Evaluate.
if cse.numReady > 0 {
return connectivity.Ready
}
if cse.numConnecting > 0 {
return connectivity.Connecting
}
return connectivity.TransientFailure
}

304
vendor/google.golang.org/grpc/call.go generated vendored
View File

@@ -19,289 +19,75 @@
package grpc
import (
"bytes"
"io"
"time"
"golang.org/x/net/context"
"golang.org/x/net/trace"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/peer"
"google.golang.org/grpc/stats"
"google.golang.org/grpc/status"
"google.golang.org/grpc/transport"
)
// recvResponse receives and parses an RPC response.
// On error, it returns the error and indicates whether the call should be retried.
// Invoke sends the RPC request on the wire and returns after response is
// received. This is typically called by generated code.
//
// TODO(zhaoq): Check whether the received message sequence is valid.
// TODO ctx is used for stats collection and processing. It is the context passed from the application.
func recvResponse(ctx context.Context, dopts dialOptions, t transport.ClientTransport, c *callInfo, stream *transport.Stream, reply interface{}) (err error) {
// Try to acquire header metadata from the server if there is any.
defer func() {
if err != nil {
if _, ok := err.(transport.ConnectionError); !ok {
t.CloseStream(stream, err)
}
}
}()
c.headerMD, err = stream.Header()
if err != nil {
return
}
p := &parser{r: stream}
var inPayload *stats.InPayload
if dopts.copts.StatsHandler != nil {
inPayload = &stats.InPayload{
Client: true,
}
}
for {
if c.maxReceiveMessageSize == nil {
return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)")
}
if err = recv(p, dopts.codec, stream, dopts.dc, reply, *c.maxReceiveMessageSize, inPayload); err != nil {
if err == io.EOF {
break
}
return
}
}
if inPayload != nil && err == io.EOF && stream.Status().Code() == codes.OK {
// TODO in the current implementation, inTrailer may be handled before inPayload in some cases.
// Fix the order if necessary.
dopts.copts.StatsHandler.HandleRPC(ctx, inPayload)
}
c.trailerMD = stream.Trailer()
return nil
}
// 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 {
// 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)
// sendRequest writes out various information of an RPC such as Context and Message.
func sendRequest(ctx context.Context, dopts dialOptions, compressor Compressor, c *callInfo, callHdr *transport.CallHdr, stream *transport.Stream, t transport.ClientTransport, args interface{}, opts *transport.Options) (err error) {
defer func() {
if err != nil {
// If err is connection error, t will be closed, no need to close stream here.
if _, ok := err.(transport.ConnectionError); !ok {
t.CloseStream(stream, err)
}
}
}()
var (
cbuf *bytes.Buffer
outPayload *stats.OutPayload
)
if compressor != nil {
cbuf = new(bytes.Buffer)
}
if dopts.copts.StatsHandler != nil {
outPayload = &stats.OutPayload{
Client: true,
}
}
hdr, data, err := encode(dopts.codec, args, compressor, cbuf, outPayload)
if err != nil {
return err
}
if c.maxSendMessageSize == nil {
return Errorf(codes.Internal, "callInfo maxSendMessageSize field uninitialized(nil)")
}
if len(data) > *c.maxSendMessageSize {
return Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(data), *c.maxSendMessageSize)
}
err = t.Write(stream, hdr, data, opts)
if err == nil && outPayload != nil {
outPayload.SentTime = time.Now()
dopts.copts.StatsHandler.HandleRPC(ctx, outPayload)
}
// t.NewStream(...) could lead to an early rejection of the RPC (e.g., the service/method
// does not exist.) so that t.Write could get io.EOF from wait(...). Leave the following
// recvResponse to get the final status.
if err != nil && err != io.EOF {
return err
}
// Sent successfully.
return nil
}
// Invoke sends the RPC request on the wire and returns after response is received.
// Invoke is called by generated code. Also users can call Invoke directly when it
// is really needed in their use cases.
func Invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) error {
if cc.dopts.unaryInt != nil {
return cc.dopts.unaryInt(ctx, method, args, reply, cc, invoke, opts...)
}
return invoke(ctx, method, args, reply, cc, opts...)
}
func invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) (e error) {
c := defaultCallInfo()
mc := cc.GetMethodConfig(method)
if mc.WaitForReady != nil {
c.failFast = !*mc.WaitForReady
func combine(o1 []CallOption, o2 []CallOption) []CallOption {
// we don't use append because o1 could have extra capacity whose
// elements would be overwritten, which could cause inadvertent
// sharing (and race connditions) between concurrent calls
if len(o1) == 0 {
return o2
} else if len(o2) == 0 {
return o1
}
ret := make([]CallOption, len(o1)+len(o2))
copy(ret, o1)
copy(ret[len(o1):], o2)
return ret
}
if mc.Timeout != nil && *mc.Timeout >= 0 {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, *mc.Timeout)
defer cancel()
}
// Invoke sends the RPC request on the wire and returns after response is
// received. This is typically called by generated code.
//
// DEPRECATED: Use ClientConn.Invoke instead.
func Invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) error {
return cc.Invoke(ctx, method, args, reply, opts...)
}
opts = append(cc.dopts.callOptions, opts...)
for _, o := range opts {
if err := o.before(c); err != nil {
return toRPCErr(err)
}
}
defer func() {
for _, o := range opts {
o.after(c)
}
}()
var unaryStreamDesc = &StreamDesc{ServerStreams: false, ClientStreams: false}
c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize)
c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize)
if EnableTracing {
c.traceInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method)
defer c.traceInfo.tr.Finish()
c.traceInfo.firstLine.client = true
if deadline, ok := ctx.Deadline(); ok {
c.traceInfo.firstLine.deadline = deadline.Sub(time.Now())
}
c.traceInfo.tr.LazyLog(&c.traceInfo.firstLine, false)
// TODO(dsymonds): Arrange for c.traceInfo.firstLine.remoteAddr to be set.
defer func() {
if e != nil {
c.traceInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{e}}, true)
c.traceInfo.tr.SetError()
}
}()
}
ctx = newContextWithRPCInfo(ctx, c.failFast)
sh := cc.dopts.copts.StatsHandler
if sh != nil {
ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: c.failFast})
begin := &stats.Begin{
Client: true,
BeginTime: time.Now(),
FailFast: c.failFast,
}
sh.HandleRPC(ctx, begin)
defer func() {
end := &stats.End{
Client: true,
EndTime: time.Now(),
Error: e,
}
sh.HandleRPC(ctx, end)
}()
}
topts := &transport.Options{
Last: true,
Delay: false,
}
func invoke(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error {
// TODO: implement retries in clientStream and make this simply
// newClientStream, SendMsg, RecvMsg.
firstAttempt := true
for {
var (
err error
t transport.ClientTransport
stream *transport.Stream
// Record the done handler from Balancer.Get(...). It is called once the
// RPC has completed or failed.
done func(balancer.DoneInfo)
)
// TODO(zhaoq): Need a formal spec of fail-fast.
callHdr := &transport.CallHdr{
Host: cc.authority,
Method: method,
}
if cc.dopts.cp != nil {
callHdr.SendCompress = cc.dopts.cp.Type()
}
if c.creds != nil {
callHdr.Creds = c.creds
}
t, done, err = cc.getTransport(ctx, c.failFast)
csInt, err := newClientStream(ctx, unaryStreamDesc, cc, method, opts...)
if err != nil {
// TODO(zhaoq): Probably revisit the error handling.
if _, ok := status.FromError(err); ok {
return err
}
if err == errConnClosing || err == errConnUnavailable {
if c.failFast {
return Errorf(codes.Unavailable, "%v", err)
}
cs := csInt.(*clientStream)
if err := cs.SendMsg(req); err != nil {
if !cs.c.failFast && cs.attempt.s.Unprocessed() && firstAttempt {
// TODO: Add a field to header for grpc-transparent-retry-attempts
firstAttempt = false
continue
}
// All the other errors are treated as Internal errors.
return Errorf(codes.Internal, "%v", err)
return err
}
if c.traceInfo.tr != nil {
c.traceInfo.tr.LazyLog(&payload{sent: true, msg: args}, true)
}
stream, err = t.NewStream(ctx, callHdr)
if err != nil {
if done != nil {
if _, ok := err.(transport.ConnectionError); ok {
// If error is connection error, transport was sending data on wire,
// and we are not sure if anything has been sent on wire.
// If error is not connection error, we are sure nothing has been sent.
updateRPCInfoInContext(ctx, rpcInfo{bytesSent: true, bytesReceived: false})
}
done(balancer.DoneInfo{Err: err})
}
if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast {
if err := cs.RecvMsg(reply); err != nil {
if !cs.c.failFast && cs.attempt.s.Unprocessed() && firstAttempt {
// TODO: Add a field to header for grpc-transparent-retry-attempts
firstAttempt = false
continue
}
return toRPCErr(err)
return err
}
if peer, ok := peer.FromContext(stream.Context()); ok {
c.peer = peer
}
err = sendRequest(ctx, cc.dopts, cc.dopts.cp, c, callHdr, stream, t, args, topts)
if err != nil {
if done != nil {
updateRPCInfoInContext(ctx, rpcInfo{
bytesSent: stream.BytesSent(),
bytesReceived: stream.BytesReceived(),
})
done(balancer.DoneInfo{Err: err})
}
// Retry a non-failfast RPC when
// i) there is a connection error; or
// ii) the server started to drain before this RPC was initiated.
if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast {
continue
}
return toRPCErr(err)
}
err = recvResponse(ctx, cc.dopts, t, c, stream, reply)
if err != nil {
if done != nil {
updateRPCInfoInContext(ctx, rpcInfo{
bytesSent: stream.BytesSent(),
bytesReceived: stream.BytesReceived(),
})
done(balancer.DoneInfo{Err: err})
}
if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast {
continue
}
return toRPCErr(err)
}
if c.traceInfo.tr != nil {
c.traceInfo.tr.LazyLog(&payload{sent: false, msg: reply}, true)
}
t.CloseStream(stream, nil)
if done != nil {
updateRPCInfoInContext(ctx, rpcInfo{
bytesSent: stream.BytesSent(),
bytesReceived: stream.BytesReceived(),
})
done(balancer.DoneInfo{Err: err})
}
return stream.Status().Err()
return nil
}
}

910
vendor/google.golang.org/grpc/clientconn.go generated vendored
View File

File diff suppressed because it is too large Load Diff

88
vendor/google.golang.org/grpc/codec.go generated vendored
View File

@@ -19,86 +19,32 @@
package grpc
import (
"math"
"sync"
"github.com/golang/protobuf/proto"
"google.golang.org/grpc/encoding"
_ "google.golang.org/grpc/encoding/proto" // to register the Codec for "proto"
)
// baseCodec contains the functionality of both Codec and encoding.Codec, but
// omits the name/string, which vary between the two and are not needed for
// anything besides the registry in the encoding package.
type baseCodec interface {
Marshal(v interface{}) ([]byte, error)
Unmarshal(data []byte, v interface{}) error
}
var _ baseCodec = Codec(nil)
var _ baseCodec = encoding.Codec(nil)
// Codec defines the interface gRPC uses to encode and decode messages.
// Note that implementations of this interface must be thread safe;
// a Codec's methods can be called from concurrent goroutines.
//
// Deprecated: use encoding.Codec instead.
type Codec interface {
// Marshal returns the wire format of v.
Marshal(v interface{}) ([]byte, error)
// Unmarshal parses the wire format into v.
Unmarshal(data []byte, v interface{}) error
// String returns the name of the Codec implementation. The returned
// string will be used as part of content type in transmission.
// String returns the name of the Codec implementation. This is unused by
// gRPC.
String() string
}
// protoCodec is a Codec implementation with protobuf. It is the default codec for gRPC.
type protoCodec struct {
}
type cachedProtoBuffer struct {
lastMarshaledSize uint32
proto.Buffer
}
func capToMaxInt32(val int) uint32 {
if val > math.MaxInt32 {
return uint32(math.MaxInt32)
}
return uint32(val)
}
func (p protoCodec) marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) {
protoMsg := v.(proto.Message)
newSlice := make([]byte, 0, cb.lastMarshaledSize)
cb.SetBuf(newSlice)
cb.Reset()
if err := cb.Marshal(protoMsg); err != nil {
return nil, err
}
out := cb.Bytes()
cb.lastMarshaledSize = capToMaxInt32(len(out))
return out, nil
}
func (p protoCodec) Marshal(v interface{}) ([]byte, error) {
cb := protoBufferPool.Get().(*cachedProtoBuffer)
out, err := p.marshal(v, cb)
// put back buffer and lose the ref to the slice
cb.SetBuf(nil)
protoBufferPool.Put(cb)
return out, err
}
func (p protoCodec) Unmarshal(data []byte, v interface{}) error {
cb := protoBufferPool.Get().(*cachedProtoBuffer)
cb.SetBuf(data)
v.(proto.Message).Reset()
err := cb.Unmarshal(v.(proto.Message))
cb.SetBuf(nil)
protoBufferPool.Put(cb)
return err
}
func (protoCodec) String() string {
return "proto"
}
var (
protoBufferPool = &sync.Pool{
New: func() interface{} {
return &cachedProtoBuffer{
Buffer: proto.Buffer{},
lastMarshaledSize: 16,
}
},
}
)

66
vendor/google.golang.org/grpc/codes/code_string.go generated vendored
View File

@@ -1,16 +1,62 @@
// Code generated by "stringer -type=Code"; DO NOT EDIT.
/*
*
* Copyright 2017 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 codes
import "fmt"
import "strconv"
const _Code_name = "OKCanceledUnknownInvalidArgumentDeadlineExceededNotFoundAlreadyExistsPermissionDeniedResourceExhaustedFailedPreconditionAbortedOutOfRangeUnimplementedInternalUnavailableDataLossUnauthenticated"
var _Code_index = [...]uint8{0, 2, 10, 17, 32, 48, 56, 69, 85, 102, 120, 127, 137, 150, 158, 169, 177, 192}
func (i Code) String() string {
if i >= Code(len(_Code_index)-1) {
return fmt.Sprintf("Code(%d)", i)
func (c Code) String() string {
switch c {
case OK:
return "OK"
case Canceled:
return "Canceled"
case Unknown:
return "Unknown"
case InvalidArgument:
return "InvalidArgument"
case DeadlineExceeded:
return "DeadlineExceeded"
case NotFound:
return "NotFound"
case AlreadyExists:
return "AlreadyExists"
case PermissionDenied:
return "PermissionDenied"
case ResourceExhausted:
return "ResourceExhausted"
case FailedPrecondition:
return "FailedPrecondition"
case Aborted:
return "Aborted"
case OutOfRange:
return "OutOfRange"
case Unimplemented:
return "Unimplemented"
case Internal:
return "Internal"
case Unavailable:
return "Unavailable"
case DataLoss:
return "DataLoss"
case Unauthenticated:
return "Unauthenticated"
default:
return "Code(" + strconv.FormatInt(int64(c), 10) + ")"
}
return _Code_name[_Code_index[i]:_Code_index[i+1]]
}

65
vendor/google.golang.org/grpc/codes/codes.go generated vendored
View File

@@ -20,11 +20,14 @@
// consistent across various languages.
package codes
import (
"fmt"
"strconv"
)
// A Code is an unsigned 32-bit error code as defined in the gRPC spec.
type Code uint32
//go:generate stringer -type=Code
const (
// OK is returned on success.
OK Code = 0
@@ -68,10 +71,6 @@ const (
// instead for those errors).
PermissionDenied Code = 7
// Unauthenticated indicates the request does not have valid
// authentication credentials for the operation.
Unauthenticated Code = 16
// ResourceExhausted indicates some resource has been exhausted, perhaps
// a per-user quota, or perhaps the entire file system is out of space.
ResourceExhausted Code = 8
@@ -141,4 +140,58 @@ const (
// DataLoss indicates unrecoverable data loss or corruption.
DataLoss Code = 15
// Unauthenticated indicates the request does not have valid
// authentication credentials for the operation.
Unauthenticated Code = 16
_maxCode = 17
)
var strToCode = map[string]Code{
`"OK"`: OK,
`"CANCELLED"`:/* [sic] */ Canceled,
`"UNKNOWN"`: Unknown,
`"INVALID_ARGUMENT"`: InvalidArgument,
`"DEADLINE_EXCEEDED"`: DeadlineExceeded,
`"NOT_FOUND"`: NotFound,
`"ALREADY_EXISTS"`: AlreadyExists,
`"PERMISSION_DENIED"`: PermissionDenied,
`"RESOURCE_EXHAUSTED"`: ResourceExhausted,
`"FAILED_PRECONDITION"`: FailedPrecondition,
`"ABORTED"`: Aborted,
`"OUT_OF_RANGE"`: OutOfRange,
`"UNIMPLEMENTED"`: Unimplemented,
`"INTERNAL"`: Internal,
`"UNAVAILABLE"`: Unavailable,
`"DATA_LOSS"`: DataLoss,
`"UNAUTHENTICATED"`: Unauthenticated,
}
// UnmarshalJSON unmarshals b into the Code.
func (c *Code) UnmarshalJSON(b []byte) error {
// From json.Unmarshaler: By convention, to approximate the behavior of
// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
// a no-op.
if string(b) == "null" {
return nil
}
if c == nil {
return fmt.Errorf("nil receiver passed to UnmarshalJSON")
}
if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
if ci >= _maxCode {
return fmt.Errorf("invalid code: %q", ci)
}
*c = Code(ci)
return nil
}
if jc, ok := strToCode[string(b)]; ok {
*c = jc
return nil
}
return fmt.Errorf("invalid code: %q", string(b))
}

27
vendor/google.golang.org/grpc/credentials/credentials.go generated vendored
View File

@@ -34,10 +34,8 @@ import (
"golang.org/x/net/context"
)
var (
// alpnProtoStr are the specified application level protocols for gRPC.
alpnProtoStr = []string{"h2"}
)
// alpnProtoStr are the specified application level protocols for gRPC.
var alpnProtoStr = []string{"h2"}
// PerRPCCredentials defines the common interface for the credentials which need to
// attach security information to every RPC (e.g., oauth2).
@@ -45,8 +43,9 @@ 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. uri is the URI of the entry point for the request. When
// supported by the underlying implementation, ctx can be used for
// 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.
// TODO(zhaoq): Define the set of the qualified keys instead of leaving
// it as an arbitrary string.
@@ -74,11 +73,9 @@ type AuthInfo interface {
AuthType() string
}
var (
// ErrConnDispatched indicates that rawConn has been dispatched out of gRPC
// and the caller should not close rawConn.
ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC")
)
// ErrConnDispatched indicates that rawConn has been dispatched out of gRPC
// and the caller should not close rawConn.
var ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC")
// TransportCredentials defines the common interface for all the live gRPC wire
// protocols and supported transport security protocols (e.g., TLS, SSL).
@@ -135,15 +132,15 @@ func (c tlsCreds) Info() ProtocolInfo {
}
}
func (c *tlsCreds) ClientHandshake(ctx context.Context, addr string, rawConn net.Conn) (_ net.Conn, _ AuthInfo, err error) {
func (c *tlsCreds) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (_ net.Conn, _ AuthInfo, err error) {
// use local cfg to avoid clobbering ServerName if using multiple endpoints
cfg := cloneTLSConfig(c.config)
if cfg.ServerName == "" {
colonPos := strings.LastIndex(addr, ":")
colonPos := strings.LastIndex(authority, ":")
if colonPos == -1 {
colonPos = len(addr)
colonPos = len(authority)
}
cfg.ServerName = addr[:colonPos]
cfg.ServerName = authority[:colonPos]
}
conn := tls.Client(rawConn, cfg)
errChannel := make(chan error, 1)

26
vendor/google.golang.org/grpc/encoding/BUILD generated vendored Normal file
View File

@@ -0,0 +1,26 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["encoding.go"],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/encoding",
importpath = "google.golang.org/grpc/encoding",
visibility = ["//visibility:public"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//vendor/google.golang.org/grpc/encoding/proto:all-srcs",
],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

118
vendor/google.golang.org/grpc/encoding/encoding.go generated vendored Normal file
View File

@@ -0,0 +1,118 @@
/*
*
* Copyright 2017 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 encoding defines the interface for the compressor and codec, and
// functions to register and retrieve compressors and codecs.
//
// This package is EXPERIMENTAL.
package encoding
import (
"io"
"strings"
)
// Identity specifies the optional encoding for uncompressed streams.
// It is intended for grpc internal use only.
const Identity = "identity"
// Compressor is used for compressing and decompressing when sending or
// receiving messages.
type Compressor interface {
// Compress writes the data written to wc to w after compressing it. If an
// error occurs while initializing the compressor, that error is returned
// instead.
Compress(w io.Writer) (io.WriteCloser, error)
// Decompress reads data from r, decompresses it, and provides the
// uncompressed data via the returned io.Reader. If an error occurs while
// initializing the decompressor, that error is returned instead.
Decompress(r io.Reader) (io.Reader, error)
// Name is the name of the compression codec and is used to set the content
// coding header. The result must be static; the result cannot change
// between calls.
Name() string
}
var registeredCompressor = make(map[string]Compressor)
// RegisterCompressor registers the compressor with gRPC by its name. It can
// be activated when sending an RPC via grpc.UseCompressor(). It will be
// automatically accessed when receiving a message based on the content coding
// header. Servers also use it to send a response with the same encoding as
// the request.
//
// 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
// registered with the same name, the one registered last will take effect.
func RegisterCompressor(c Compressor) {
registeredCompressor[c.Name()] = c
}
// GetCompressor returns Compressor for the given compressor name.
func GetCompressor(name string) Compressor {
return registeredCompressor[name]
}
// Codec defines the interface gRPC uses to encode and decode messages. Note
// that implementations of this interface must be thread safe; a Codec's
// methods can be called from concurrent goroutines.
type Codec interface {
// Marshal returns the wire format of v.
Marshal(v interface{}) ([]byte, error)
// Unmarshal parses the wire format into v.
Unmarshal(data []byte, v interface{}) error
// Name returns the name of the Codec implementation. The returned string
// will be used as part of content type in transmission. The result must be
// static; the result cannot change between calls.
Name() string
}
var registeredCodecs = make(map[string]Codec)
// RegisterCodec registers the provided Codec for use with all gRPC clients and
// servers.
//
// The Codec will be stored and looked up by result of its Name() method, which
// should match the content-subtype of the encoding handled by the Codec. This
// is case-insensitive, and is stored and looked up as lowercase. If the
// result of calling Name() is an empty string, RegisterCodec will panic. See
// Content-Type on
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
// 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
// registered with the same name, the one registered last will take effect.
func RegisterCodec(codec Codec) {
if codec == nil {
panic("cannot register a nil Codec")
}
contentSubtype := strings.ToLower(codec.Name())
if contentSubtype == "" {
panic("cannot register Codec with empty string result for String()")
}
registeredCodecs[contentSubtype] = codec
}
// GetCodec gets a registered Codec by content-subtype, or nil if no Codec is
// registered for the content-subtype.
//
// The content-subtype is expected to be lowercase.
func GetCodec(contentSubtype string) Codec {
return registeredCodecs[contentSubtype]
}

27
vendor/google.golang.org/grpc/encoding/proto/BUILD generated vendored Normal file
View File

@@ -0,0 +1,27 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["proto.go"],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/encoding/proto",
importpath = "google.golang.org/grpc/encoding/proto",
visibility = ["//visibility:public"],
deps = [
"//vendor/github.com/golang/protobuf/proto:go_default_library",
"//vendor/google.golang.org/grpc/encoding:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

110
vendor/google.golang.org/grpc/encoding/proto/proto.go generated vendored Normal file
View File

@@ -0,0 +1,110 @@
/*
*
* Copyright 2018 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 proto defines the protobuf codec. Importing this package will
// register the codec.
package proto
import (
"math"
"sync"
"github.com/golang/protobuf/proto"
"google.golang.org/grpc/encoding"
)
// Name is the name registered for the proto compressor.
const Name = "proto"
func init() {
encoding.RegisterCodec(codec{})
}
// codec is a Codec implementation with protobuf. It is the default codec for gRPC.
type codec struct{}
type cachedProtoBuffer struct {
lastMarshaledSize uint32
proto.Buffer
}
func capToMaxInt32(val int) uint32 {
if val > math.MaxInt32 {
return uint32(math.MaxInt32)
}
return uint32(val)
}
func marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) {
protoMsg := v.(proto.Message)
newSlice := make([]byte, 0, cb.lastMarshaledSize)
cb.SetBuf(newSlice)
cb.Reset()
if err := cb.Marshal(protoMsg); err != nil {
return nil, err
}
out := cb.Bytes()
cb.lastMarshaledSize = capToMaxInt32(len(out))
return out, nil
}
func (codec) Marshal(v interface{}) ([]byte, error) {
if pm, ok := v.(proto.Marshaler); ok {
// object can marshal itself, no need for buffer
return pm.Marshal()
}
cb := protoBufferPool.Get().(*cachedProtoBuffer)
out, err := marshal(v, cb)
// put back buffer and lose the ref to the slice
cb.SetBuf(nil)
protoBufferPool.Put(cb)
return out, err
}
func (codec) Unmarshal(data []byte, v interface{}) error {
protoMsg := v.(proto.Message)
protoMsg.Reset()
if pu, ok := protoMsg.(proto.Unmarshaler); ok {
// object can unmarshal itself, no need for buffer
return pu.Unmarshal(data)
}
cb := protoBufferPool.Get().(*cachedProtoBuffer)
cb.SetBuf(data)
err := cb.Unmarshal(protoMsg)
cb.SetBuf(nil)
protoBufferPool.Put(cb)
return err
}
func (codec) Name() string {
return Name
}
var protoBufferPool = &sync.Pool{
New: func() interface{} {
return &cachedProtoBuffer{
Buffer: proto.Buffer{},
lastMarshaledSize: 16,
}
},
}

37
vendor/google.golang.org/grpc/envconfig.go generated vendored Normal file
View File

@@ -0,0 +1,37 @@
/*
*
* Copyright 2018 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 (
"os"
"strings"
)
const (
envConfigPrefix = "GRPC_GO_"
envConfigStickinessStr = envConfigPrefix + "STICKINESS"
)
var (
envConfigStickinessOn bool
)
func init() {
envConfigStickinessOn = strings.EqualFold(os.Getenv(envConfigStickinessStr), "on")
}

70
vendor/google.golang.org/grpc/go16.go generated vendored Normal file
View File

@@ -0,0 +1,70 @@
// +build go1.6,!go1.7
/*
*
* Copyright 2016 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"
"io"
"net"
"net/http"
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/grpc/transport"
)
// dialContext connects to the address on the named network.
func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address)
}
func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
req.Cancel = ctx.Done()
if err := req.Write(conn); err != nil {
return fmt.Errorf("failed to write the HTTP request: %v", err)
}
return nil
}
// toRPCErr converts an error into an error from the status package.
func toRPCErr(err error) error {
if err == nil || err == io.EOF {
return err
}
if _, ok := status.FromError(err); ok {
return err
}
switch e := err.(type) {
case transport.StreamError:
return status.Error(e.Code, e.Desc)
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())
}
}
return status.Error(codes.Unknown, err.Error())
}

71
vendor/google.golang.org/grpc/go17.go generated vendored Normal file
View File

@@ -0,0 +1,71 @@
// +build go1.7
/*
*
* Copyright 2016 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 (
"context"
"fmt"
"io"
"net"
"net/http"
netctx "golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/grpc/transport"
)
// dialContext connects to the address on the named network.
func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
return (&net.Dialer{}).DialContext(ctx, network, address)
}
func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
req = req.WithContext(ctx)
if err := req.Write(conn); err != nil {
return fmt.Errorf("failed to write the HTTP request: %v", err)
}
return nil
}
// toRPCErr converts an error into an error from the status package.
func toRPCErr(err error) error {
if err == nil || err == io.EOF {
return err
}
if _, ok := status.FromError(err); ok {
return err
}
switch e := err.(type) {
case transport.StreamError:
return status.Error(e.Code, e.Desc)
case transport.ConnectionError:
return status.Error(codes.Unavailable, e.Desc)
default:
switch err {
case context.DeadlineExceeded, netctx.DeadlineExceeded:
return status.Error(codes.DeadlineExceeded, err.Error())
case context.Canceled, netctx.Canceled:
return status.Error(codes.Canceled, err.Error())
}
}
return status.Error(codes.Unknown, err.Error())
}

704
vendor/google.golang.org/grpc/grpclb.go generated vendored
View File

@@ -1,704 +0,0 @@
/*
*
* Copyright 2016 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 (
"errors"
"fmt"
"math/rand"
"net"
"sync"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
lbmpb "google.golang.org/grpc/grpclb/grpc_lb_v1/messages"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/naming"
)
// Client API for LoadBalancer service.
// Mostly copied from generated pb.go file.
// To avoid circular dependency.
type loadBalancerClient struct {
cc *ClientConn
}
func (c *loadBalancerClient) BalanceLoad(ctx context.Context, opts ...CallOption) (*balanceLoadClientStream, error) {
desc := &StreamDesc{
StreamName: "BalanceLoad",
ServerStreams: true,
ClientStreams: true,
}
stream, err := NewClientStream(ctx, desc, c.cc, "/grpc.lb.v1.LoadBalancer/BalanceLoad", opts...)
if err != nil {
return nil, err
}
x := &balanceLoadClientStream{stream}
return x, nil
}
type balanceLoadClientStream struct {
ClientStream
}
func (x *balanceLoadClientStream) Send(m *lbmpb.LoadBalanceRequest) error {
return x.ClientStream.SendMsg(m)
}
func (x *balanceLoadClientStream) Recv() (*lbmpb.LoadBalanceResponse, error) {
m := new(lbmpb.LoadBalanceResponse)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// NewGRPCLBBalancer creates a grpclb load balancer.
func NewGRPCLBBalancer(r naming.Resolver) Balancer {
return &grpclbBalancer{
r: r,
}
}
type remoteBalancerInfo struct {
addr string
// the server name used for authentication with the remote LB server.
name string
}
// grpclbAddrInfo consists of the information of a backend server.
type grpclbAddrInfo struct {
addr Address
connected bool
// dropForRateLimiting indicates whether this particular request should be
// dropped by the client for rate limiting.
dropForRateLimiting bool
// dropForLoadBalancing indicates whether this particular request should be
// dropped by the client for load balancing.
dropForLoadBalancing bool
}
type grpclbBalancer struct {
r naming.Resolver
target string
mu sync.Mutex
seq int // a sequence number to make sure addrCh does not get stale addresses.
w naming.Watcher
addrCh chan []Address
rbs []remoteBalancerInfo
addrs []*grpclbAddrInfo
next int
waitCh chan struct{}
done bool
rand *rand.Rand
clientStats lbmpb.ClientStats
}
func (b *grpclbBalancer) watchAddrUpdates(w naming.Watcher, ch chan []remoteBalancerInfo) error {
updates, err := w.Next()
if err != nil {
grpclog.Warningf("grpclb: failed to get next addr update from watcher: %v", err)
return err
}
b.mu.Lock()
defer b.mu.Unlock()
if b.done {
return ErrClientConnClosing
}
for _, update := range updates {
switch update.Op {
case naming.Add:
var exist bool
for _, v := range b.rbs {
// TODO: Is the same addr with different server name a different balancer?
if update.Addr == v.addr {
exist = true
break
}
}
if exist {
continue
}
md, ok := update.Metadata.(*naming.AddrMetadataGRPCLB)
if !ok {
// TODO: Revisit the handling here and may introduce some fallback mechanism.
grpclog.Errorf("The name resolution contains unexpected metadata %v", update.Metadata)
continue
}
switch md.AddrType {
case naming.Backend:
// TODO: Revisit the handling here and may introduce some fallback mechanism.
grpclog.Errorf("The name resolution does not give grpclb addresses")
continue
case naming.GRPCLB:
b.rbs = append(b.rbs, remoteBalancerInfo{
addr: update.Addr,
name: md.ServerName,
})
default:
grpclog.Errorf("Received unknow address type %d", md.AddrType)
continue
}
case naming.Delete:
for i, v := range b.rbs {
if update.Addr == v.addr {
copy(b.rbs[i:], b.rbs[i+1:])
b.rbs = b.rbs[:len(b.rbs)-1]
break
}
}
default:
grpclog.Errorf("Unknown update.Op %v", update.Op)
}
}
// TODO: Fall back to the basic round-robin load balancing if the resulting address is
// not a load balancer.
select {
case <-ch:
default:
}
ch <- b.rbs
return nil
}
func convertDuration(d *lbmpb.Duration) time.Duration {
if d == nil {
return 0
}
return time.Duration(d.Seconds)*time.Second + time.Duration(d.Nanos)*time.Nanosecond
}
func (b *grpclbBalancer) processServerList(l *lbmpb.ServerList, seq int) {
if l == nil {
return
}
servers := l.GetServers()
var (
sl []*grpclbAddrInfo
addrs []Address
)
for _, s := range servers {
md := metadata.Pairs("lb-token", s.LoadBalanceToken)
ip := net.IP(s.IpAddress)
ipStr := ip.String()
if ip.To4() == nil {
// Add square brackets to ipv6 addresses, otherwise net.Dial() and
// net.SplitHostPort() will return too many colons error.
ipStr = fmt.Sprintf("[%s]", ipStr)
}
addr := Address{
Addr: fmt.Sprintf("%s:%d", ipStr, s.Port),
Metadata: &md,
}
sl = append(sl, &grpclbAddrInfo{
addr: addr,
dropForRateLimiting: s.DropForRateLimiting,
dropForLoadBalancing: s.DropForLoadBalancing,
})
addrs = append(addrs, addr)
}
b.mu.Lock()
defer b.mu.Unlock()
if b.done || seq < b.seq {
return
}
if len(sl) > 0 {
// reset b.next to 0 when replacing the server list.
b.next = 0
b.addrs = sl
b.addrCh <- addrs
}
return
}
func (b *grpclbBalancer) sendLoadReport(s *balanceLoadClientStream, interval time.Duration, done <-chan struct{}) {
ticker := time.NewTicker(interval)
defer ticker.Stop()
for {
select {
case <-ticker.C:
case <-done:
return
}
b.mu.Lock()
stats := b.clientStats
b.clientStats = lbmpb.ClientStats{} // Clear the stats.
b.mu.Unlock()
t := time.Now()
stats.Timestamp = &lbmpb.Timestamp{
Seconds: t.Unix(),
Nanos: int32(t.Nanosecond()),
}
if err := s.Send(&lbmpb.LoadBalanceRequest{
LoadBalanceRequestType: &lbmpb.LoadBalanceRequest_ClientStats{
ClientStats: &stats,
},
}); err != nil {
grpclog.Errorf("grpclb: failed to send load report: %v", err)
return
}
}
}
func (b *grpclbBalancer) callRemoteBalancer(lbc *loadBalancerClient, seq int) (retry bool) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
stream, err := lbc.BalanceLoad(ctx)
if err != nil {
grpclog.Errorf("grpclb: failed to perform RPC to the remote balancer %v", err)
return
}
b.mu.Lock()
if b.done {
b.mu.Unlock()
return
}
b.mu.Unlock()
initReq := &lbmpb.LoadBalanceRequest{
LoadBalanceRequestType: &lbmpb.LoadBalanceRequest_InitialRequest{
InitialRequest: &lbmpb.InitialLoadBalanceRequest{
Name: b.target,
},
},
}
if err := stream.Send(initReq); err != nil {
grpclog.Errorf("grpclb: failed to send init request: %v", err)
// TODO: backoff on retry?
return true
}
reply, err := stream.Recv()
if err != nil {
grpclog.Errorf("grpclb: failed to recv init response: %v", err)
// TODO: backoff on retry?
return true
}
initResp := reply.GetInitialResponse()
if initResp == nil {
grpclog.Errorf("grpclb: reply from remote balancer did not include initial response.")
return
}
// TODO: Support delegation.
if initResp.LoadBalancerDelegate != "" {
// delegation
grpclog.Errorf("TODO: Delegation is not supported yet.")
return
}
streamDone := make(chan struct{})
defer close(streamDone)
b.mu.Lock()
b.clientStats = lbmpb.ClientStats{} // Clear client stats.
b.mu.Unlock()
if d := convertDuration(initResp.ClientStatsReportInterval); d > 0 {
go b.sendLoadReport(stream, d, streamDone)
}
// Retrieve the server list.
for {
reply, err := stream.Recv()
if err != nil {
grpclog.Errorf("grpclb: failed to recv server list: %v", err)
break
}
b.mu.Lock()
if b.done || seq < b.seq {
b.mu.Unlock()
return
}
b.seq++ // tick when receiving a new list of servers.
seq = b.seq
b.mu.Unlock()
if serverList := reply.GetServerList(); serverList != nil {
b.processServerList(serverList, seq)
}
}
return true
}
func (b *grpclbBalancer) Start(target string, config BalancerConfig) error {
b.rand = rand.New(rand.NewSource(time.Now().Unix()))
// TODO: Fall back to the basic direct connection if there is no name resolver.
if b.r == nil {
return errors.New("there is no name resolver installed")
}
b.target = target
b.mu.Lock()
if b.done {
b.mu.Unlock()
return ErrClientConnClosing
}
b.addrCh = make(chan []Address)
w, err := b.r.Resolve(target)
if err != nil {
b.mu.Unlock()
grpclog.Errorf("grpclb: failed to resolve address: %v, err: %v", target, err)
return err
}
b.w = w
b.mu.Unlock()
balancerAddrsCh := make(chan []remoteBalancerInfo, 1)
// Spawn a goroutine to monitor the name resolution of remote load balancer.
go func() {
for {
if err := b.watchAddrUpdates(w, balancerAddrsCh); err != nil {
grpclog.Warningf("grpclb: the naming watcher stops working due to %v.\n", err)
close(balancerAddrsCh)
return
}
}
}()
// Spawn a goroutine to talk to the remote load balancer.
go func() {
var (
cc *ClientConn
// ccError is closed when there is an error in the current cc.
// A new rb should be picked from rbs and connected.
ccError chan struct{}
rb *remoteBalancerInfo
rbs []remoteBalancerInfo
rbIdx int
)
defer func() {
if ccError != nil {
select {
case <-ccError:
default:
close(ccError)
}
}
if cc != nil {
cc.Close()
}
}()
for {
var ok bool
select {
case rbs, ok = <-balancerAddrsCh:
if !ok {
return
}
foundIdx := -1
if rb != nil {
for i, trb := range rbs {
if trb == *rb {
foundIdx = i
break
}
}
}
if foundIdx >= 0 {
if foundIdx >= 1 {
// Move the address in use to the beginning of the list.
b.rbs[0], b.rbs[foundIdx] = b.rbs[foundIdx], b.rbs[0]
rbIdx = 0
}
continue // If found, don't dial new cc.
} else if len(rbs) > 0 {
// Pick a random one from the list, instead of always using the first one.
if l := len(rbs); l > 1 && rb != nil {
tmpIdx := b.rand.Intn(l - 1)
b.rbs[0], b.rbs[tmpIdx] = b.rbs[tmpIdx], b.rbs[0]
}
rbIdx = 0
rb = &rbs[0]
} else {
// foundIdx < 0 && len(rbs) <= 0.
rb = nil
}
case <-ccError:
ccError = nil
if rbIdx < len(rbs)-1 {
rbIdx++
rb = &rbs[rbIdx]
} else {
rb = nil
}
}
if rb == nil {
continue
}
if cc != nil {
cc.Close()
}
// Talk to the remote load balancer to get the server list.
var (
err error
dopts []DialOption
)
if creds := config.DialCreds; creds != nil {
if rb.name != "" {
if err := creds.OverrideServerName(rb.name); err != nil {
grpclog.Warningf("grpclb: failed to override the server name in the credentials: %v", err)
continue
}
}
dopts = append(dopts, WithTransportCredentials(creds))
} else {
dopts = append(dopts, WithInsecure())
}
if dialer := config.Dialer; dialer != nil {
// WithDialer takes a different type of function, so we instead use a special DialOption here.
dopts = append(dopts, func(o *dialOptions) { o.copts.Dialer = dialer })
}
dopts = append(dopts, WithBlock())
ccError = make(chan struct{})
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
cc, err = DialContext(ctx, rb.addr, dopts...)
cancel()
if err != nil {
grpclog.Warningf("grpclb: failed to setup a connection to the remote balancer %v: %v", rb.addr, err)
close(ccError)
continue
}
b.mu.Lock()
b.seq++ // tick when getting a new balancer address
seq := b.seq
b.next = 0
b.mu.Unlock()
go func(cc *ClientConn, ccError chan struct{}) {
lbc := &loadBalancerClient{cc}
b.callRemoteBalancer(lbc, seq)
cc.Close()
select {
case <-ccError:
default:
close(ccError)
}
}(cc, ccError)
}
}()
return nil
}
func (b *grpclbBalancer) down(addr Address, err error) {
b.mu.Lock()
defer b.mu.Unlock()
for _, a := range b.addrs {
if addr == a.addr {
a.connected = false
break
}
}
}
func (b *grpclbBalancer) Up(addr Address) func(error) {
b.mu.Lock()
defer b.mu.Unlock()
if b.done {
return nil
}
var cnt int
for _, a := range b.addrs {
if a.addr == addr {
if a.connected {
return nil
}
a.connected = true
}
if a.connected && !a.dropForRateLimiting && !a.dropForLoadBalancing {
cnt++
}
}
// addr is the only one which is connected. Notify the Get() callers who are blocking.
if cnt == 1 && b.waitCh != nil {
close(b.waitCh)
b.waitCh = nil
}
return func(err error) {
b.down(addr, err)
}
}
func (b *grpclbBalancer) Get(ctx context.Context, opts BalancerGetOptions) (addr Address, put func(), err error) {
var ch chan struct{}
b.mu.Lock()
if b.done {
b.mu.Unlock()
err = ErrClientConnClosing
return
}
seq := b.seq
defer func() {
if err != nil {
return
}
put = func() {
s, ok := rpcInfoFromContext(ctx)
if !ok {
return
}
b.mu.Lock()
defer b.mu.Unlock()
if b.done || seq < b.seq {
return
}
b.clientStats.NumCallsFinished++
if !s.bytesSent {
b.clientStats.NumCallsFinishedWithClientFailedToSend++
} else if s.bytesReceived {
b.clientStats.NumCallsFinishedKnownReceived++
}
}
}()
b.clientStats.NumCallsStarted++
if len(b.addrs) > 0 {
if b.next >= len(b.addrs) {
b.next = 0
}
next := b.next
for {
a := b.addrs[next]
next = (next + 1) % len(b.addrs)
if a.connected {
if !a.dropForRateLimiting && !a.dropForLoadBalancing {
addr = a.addr
b.next = next
b.mu.Unlock()
return
}
if !opts.BlockingWait {
b.next = next
if a.dropForLoadBalancing {
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithDropForLoadBalancing++
} else if a.dropForRateLimiting {
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithDropForRateLimiting++
}
b.mu.Unlock()
err = Errorf(codes.Unavailable, "%s drops requests", a.addr.Addr)
return
}
}
if next == b.next {
// Has iterated all the possible address but none is connected.
break
}
}
}
if !opts.BlockingWait {
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithClientFailedToSend++
b.mu.Unlock()
err = Errorf(codes.Unavailable, "there is no address available")
return
}
// Wait on b.waitCh for non-failfast RPCs.
if b.waitCh == nil {
ch = make(chan struct{})
b.waitCh = ch
} else {
ch = b.waitCh
}
b.mu.Unlock()
for {
select {
case <-ctx.Done():
b.mu.Lock()
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithClientFailedToSend++
b.mu.Unlock()
err = ctx.Err()
return
case <-ch:
b.mu.Lock()
if b.done {
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithClientFailedToSend++
b.mu.Unlock()
err = ErrClientConnClosing
return
}
if len(b.addrs) > 0 {
if b.next >= len(b.addrs) {
b.next = 0
}
next := b.next
for {
a := b.addrs[next]
next = (next + 1) % len(b.addrs)
if a.connected {
if !a.dropForRateLimiting && !a.dropForLoadBalancing {
addr = a.addr
b.next = next
b.mu.Unlock()
return
}
if !opts.BlockingWait {
b.next = next
if a.dropForLoadBalancing {
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithDropForLoadBalancing++
} else if a.dropForRateLimiting {
b.clientStats.NumCallsFinished++
b.clientStats.NumCallsFinishedWithDropForRateLimiting++
}
b.mu.Unlock()
err = Errorf(codes.Unavailable, "drop requests for the addreess %s", a.addr.Addr)
return
}
}
if next == b.next {
// Has iterated all the possible address but none is connected.
break
}
}
}
// The newly added addr got removed by Down() again.
if b.waitCh == nil {
ch = make(chan struct{})
b.waitCh = ch
} else {
ch = b.waitCh
}
b.mu.Unlock()
}
}
}
func (b *grpclbBalancer) Notify() <-chan []Address {
return b.addrCh
}
func (b *grpclbBalancer) Close() error {
b.mu.Lock()
defer b.mu.Unlock()
if b.done {
return errBalancerClosed
}
b.done = true
if b.waitCh != nil {
close(b.waitCh)
}
if b.addrCh != nil {
close(b.addrCh)
}
if b.w != nil {
b.w.Close()
}
return nil
}

6
vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages/BUILD generated vendored
View File

@@ -6,7 +6,11 @@ go_library(
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
importpath = "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
visibility = ["//visibility:public"],
deps = ["//vendor/github.com/golang/protobuf/proto:go_default_library"],
deps = [
"//vendor/github.com/golang/protobuf/proto:go_default_library",
"//vendor/github.com/golang/protobuf/ptypes/duration:go_default_library",
"//vendor/github.com/golang/protobuf/ptypes/timestamp:go_default_library",
],
)
filegroup(

507
vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages/messages.pb.go generated vendored
View File

@@ -1,28 +1,13 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: grpc_lb_v1/messages/messages.proto
/*
Package messages is a generated protocol buffer package.
It is generated from these files:
grpc_lb_v1/messages/messages.proto
It has these top-level messages:
Duration
Timestamp
LoadBalanceRequest
InitialLoadBalanceRequest
ClientStats
LoadBalanceResponse
InitialLoadBalanceResponse
ServerList
Server
*/
package messages
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import duration "github.com/golang/protobuf/ptypes/duration"
import timestamp "github.com/golang/protobuf/ptypes/timestamp"
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
@@ -35,90 +20,49 @@ var _ = math.Inf
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
type Duration struct {
// Signed seconds of the span of time. Must be from -315,576,000,000
// to +315,576,000,000 inclusive.
Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"`
// Signed fractions of a second at nanosecond resolution of the span
// of time. 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. Must be from -999,999,999
// to +999,999,999 inclusive.
Nanos int32 `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"`
}
func (m *Duration) Reset() { *m = Duration{} }
func (m *Duration) String() string { return proto.CompactTextString(m) }
func (*Duration) ProtoMessage() {}
func (*Duration) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
func (m *Duration) GetSeconds() int64 {
if m != nil {
return m.Seconds
}
return 0
}
func (m *Duration) GetNanos() int32 {
if m != nil {
return m.Nanos
}
return 0
}
type Timestamp struct {
// Represents seconds of UTC time since Unix epoch
// 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
// 9999-12-31T23:59:59Z inclusive.
Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"`
// Non-negative fractions of a second at nanosecond resolution. Negative
// second values with fractions must still have non-negative nanos values
// that count forward in time. Must be from 0 to 999,999,999
// inclusive.
Nanos int32 `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"`
}
func (m *Timestamp) Reset() { *m = Timestamp{} }
func (m *Timestamp) String() string { return proto.CompactTextString(m) }
func (*Timestamp) ProtoMessage() {}
func (*Timestamp) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (m *Timestamp) GetSeconds() int64 {
if m != nil {
return m.Seconds
}
return 0
}
func (m *Timestamp) GetNanos() int32 {
if m != nil {
return m.Nanos
}
return 0
}
type LoadBalanceRequest struct {
// Types that are valid to be assigned to LoadBalanceRequestType:
// *LoadBalanceRequest_InitialRequest
// *LoadBalanceRequest_ClientStats
LoadBalanceRequestType isLoadBalanceRequest_LoadBalanceRequestType `protobuf_oneof:"load_balance_request_type"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *LoadBalanceRequest) Reset() { *m = LoadBalanceRequest{} }
func (m *LoadBalanceRequest) String() string { return proto.CompactTextString(m) }
func (*LoadBalanceRequest) ProtoMessage() {}
func (*LoadBalanceRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
func (*LoadBalanceRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{0}
}
func (m *LoadBalanceRequest) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_LoadBalanceRequest.Unmarshal(m, b)
}
func (m *LoadBalanceRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_LoadBalanceRequest.Marshal(b, m, deterministic)
}
func (dst *LoadBalanceRequest) XXX_Merge(src proto.Message) {
xxx_messageInfo_LoadBalanceRequest.Merge(dst, src)
}
func (m *LoadBalanceRequest) XXX_Size() int {
return xxx_messageInfo_LoadBalanceRequest.Size(m)
}
func (m *LoadBalanceRequest) XXX_DiscardUnknown() {
xxx_messageInfo_LoadBalanceRequest.DiscardUnknown(m)
}
var xxx_messageInfo_LoadBalanceRequest proto.InternalMessageInfo
type isLoadBalanceRequest_LoadBalanceRequestType interface {
isLoadBalanceRequest_LoadBalanceRequestType()
}
type LoadBalanceRequest_InitialRequest struct {
InitialRequest *InitialLoadBalanceRequest `protobuf:"bytes,1,opt,name=initial_request,json=initialRequest,oneof"`
InitialRequest *InitialLoadBalanceRequest `protobuf:"bytes,1,opt,name=initial_request,json=initialRequest,proto3,oneof"`
}
type LoadBalanceRequest_ClientStats struct {
ClientStats *ClientStats `protobuf:"bytes,2,opt,name=client_stats,json=clientStats,oneof"`
ClientStats *ClientStats `protobuf:"bytes,2,opt,name=client_stats,json=clientStats,proto3,oneof"`
}
func (*LoadBalanceRequest_InitialRequest) isLoadBalanceRequest_LoadBalanceRequestType() {}
@@ -204,12 +148,12 @@ func _LoadBalanceRequest_OneofSizer(msg proto.Message) (n int) {
switch x := m.LoadBalanceRequestType.(type) {
case *LoadBalanceRequest_InitialRequest:
s := proto.Size(x.InitialRequest)
n += proto.SizeVarint(1<<3 | proto.WireBytes)
n += 1 // tag and wire
n += proto.SizeVarint(uint64(s))
n += s
case *LoadBalanceRequest_ClientStats:
s := proto.Size(x.ClientStats)
n += proto.SizeVarint(2<<3 | proto.WireBytes)
n += 1 // tag and wire
n += proto.SizeVarint(uint64(s))
n += s
case nil:
@@ -220,15 +164,37 @@ func _LoadBalanceRequest_OneofSizer(msg proto.Message) (n int) {
}
type InitialLoadBalanceRequest struct {
// Name of load balanced service (IE, balancer.service.com)
// Name of load balanced service (IE, balancer.service.com). Its
// length should be less than 256 bytes.
Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *InitialLoadBalanceRequest) Reset() { *m = InitialLoadBalanceRequest{} }
func (m *InitialLoadBalanceRequest) String() string { return proto.CompactTextString(m) }
func (*InitialLoadBalanceRequest) ProtoMessage() {}
func (*InitialLoadBalanceRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
func (*InitialLoadBalanceRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{1}
}
func (m *InitialLoadBalanceRequest) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_InitialLoadBalanceRequest.Unmarshal(m, b)
}
func (m *InitialLoadBalanceRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_InitialLoadBalanceRequest.Marshal(b, m, deterministic)
}
func (dst *InitialLoadBalanceRequest) XXX_Merge(src proto.Message) {
xxx_messageInfo_InitialLoadBalanceRequest.Merge(dst, src)
}
func (m *InitialLoadBalanceRequest) XXX_Size() int {
return xxx_messageInfo_InitialLoadBalanceRequest.Size(m)
}
func (m *InitialLoadBalanceRequest) XXX_DiscardUnknown() {
xxx_messageInfo_InitialLoadBalanceRequest.DiscardUnknown(m)
}
var xxx_messageInfo_InitialLoadBalanceRequest proto.InternalMessageInfo
func (m *InitialLoadBalanceRequest) GetName() string {
if m != nil {
@@ -237,34 +203,101 @@ func (m *InitialLoadBalanceRequest) GetName() string {
return ""
}
// Contains the number of calls finished for a particular load balance token.
type ClientStatsPerToken struct {
// See Server.load_balance_token.
LoadBalanceToken string `protobuf:"bytes,1,opt,name=load_balance_token,json=loadBalanceToken,proto3" json:"load_balance_token,omitempty"`
// The total number of RPCs that finished associated with the token.
NumCalls int64 `protobuf:"varint,2,opt,name=num_calls,json=numCalls,proto3" json:"num_calls,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ClientStatsPerToken) Reset() { *m = ClientStatsPerToken{} }
func (m *ClientStatsPerToken) String() string { return proto.CompactTextString(m) }
func (*ClientStatsPerToken) ProtoMessage() {}
func (*ClientStatsPerToken) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{2}
}
func (m *ClientStatsPerToken) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ClientStatsPerToken.Unmarshal(m, b)
}
func (m *ClientStatsPerToken) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ClientStatsPerToken.Marshal(b, m, deterministic)
}
func (dst *ClientStatsPerToken) XXX_Merge(src proto.Message) {
xxx_messageInfo_ClientStatsPerToken.Merge(dst, src)
}
func (m *ClientStatsPerToken) XXX_Size() int {
return xxx_messageInfo_ClientStatsPerToken.Size(m)
}
func (m *ClientStatsPerToken) XXX_DiscardUnknown() {
xxx_messageInfo_ClientStatsPerToken.DiscardUnknown(m)
}
var xxx_messageInfo_ClientStatsPerToken proto.InternalMessageInfo
func (m *ClientStatsPerToken) GetLoadBalanceToken() string {
if m != nil {
return m.LoadBalanceToken
}
return ""
}
func (m *ClientStatsPerToken) GetNumCalls() int64 {
if m != nil {
return m.NumCalls
}
return 0
}
// Contains client level statistics that are useful to load balancing. Each
// count except the timestamp should be reset to zero after reporting the stats.
type ClientStats struct {
// The timestamp of generating the report.
Timestamp *Timestamp `protobuf:"bytes,1,opt,name=timestamp" json:"timestamp,omitempty"`
Timestamp *timestamp.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
// The total number of RPCs that started.
NumCallsStarted int64 `protobuf:"varint,2,opt,name=num_calls_started,json=numCallsStarted" json:"num_calls_started,omitempty"`
NumCallsStarted int64 `protobuf:"varint,2,opt,name=num_calls_started,json=numCallsStarted,proto3" json:"num_calls_started,omitempty"`
// The total number of RPCs that finished.
NumCallsFinished int64 `protobuf:"varint,3,opt,name=num_calls_finished,json=numCallsFinished" json:"num_calls_finished,omitempty"`
// The total number of RPCs that were dropped by the client because of rate
// limiting.
NumCallsFinishedWithDropForRateLimiting int64 `protobuf:"varint,4,opt,name=num_calls_finished_with_drop_for_rate_limiting,json=numCallsFinishedWithDropForRateLimiting" json:"num_calls_finished_with_drop_for_rate_limiting,omitempty"`
// The total number of RPCs that were dropped by the client because of load
// balancing.
NumCallsFinishedWithDropForLoadBalancing int64 `protobuf:"varint,5,opt,name=num_calls_finished_with_drop_for_load_balancing,json=numCallsFinishedWithDropForLoadBalancing" json:"num_calls_finished_with_drop_for_load_balancing,omitempty"`
NumCallsFinished int64 `protobuf:"varint,3,opt,name=num_calls_finished,json=numCallsFinished,proto3" json:"num_calls_finished,omitempty"`
// The total number of RPCs that failed to reach a server except dropped RPCs.
NumCallsFinishedWithClientFailedToSend int64 `protobuf:"varint,6,opt,name=num_calls_finished_with_client_failed_to_send,json=numCallsFinishedWithClientFailedToSend" json:"num_calls_finished_with_client_failed_to_send,omitempty"`
NumCallsFinishedWithClientFailedToSend int64 `protobuf:"varint,6,opt,name=num_calls_finished_with_client_failed_to_send,json=numCallsFinishedWithClientFailedToSend,proto3" json:"num_calls_finished_with_client_failed_to_send,omitempty"`
// The total number of RPCs that finished and are known to have been received
// by a server.
NumCallsFinishedKnownReceived int64 `protobuf:"varint,7,opt,name=num_calls_finished_known_received,json=numCallsFinishedKnownReceived" json:"num_calls_finished_known_received,omitempty"`
NumCallsFinishedKnownReceived int64 `protobuf:"varint,7,opt,name=num_calls_finished_known_received,json=numCallsFinishedKnownReceived,proto3" json:"num_calls_finished_known_received,omitempty"`
// The list of dropped calls.
CallsFinishedWithDrop []*ClientStatsPerToken `protobuf:"bytes,8,rep,name=calls_finished_with_drop,json=callsFinishedWithDrop,proto3" json:"calls_finished_with_drop,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ClientStats) Reset() { *m = ClientStats{} }
func (m *ClientStats) String() string { return proto.CompactTextString(m) }
func (*ClientStats) ProtoMessage() {}
func (*ClientStats) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
func (*ClientStats) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{3}
}
func (m *ClientStats) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ClientStats.Unmarshal(m, b)
}
func (m *ClientStats) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ClientStats.Marshal(b, m, deterministic)
}
func (dst *ClientStats) XXX_Merge(src proto.Message) {
xxx_messageInfo_ClientStats.Merge(dst, src)
}
func (m *ClientStats) XXX_Size() int {
return xxx_messageInfo_ClientStats.Size(m)
}
func (m *ClientStats) XXX_DiscardUnknown() {
xxx_messageInfo_ClientStats.DiscardUnknown(m)
}
func (m *ClientStats) GetTimestamp() *Timestamp {
var xxx_messageInfo_ClientStats proto.InternalMessageInfo
func (m *ClientStats) GetTimestamp() *timestamp.Timestamp {
if m != nil {
return m.Timestamp
}
@@ -285,20 +318,6 @@ func (m *ClientStats) GetNumCallsFinished() int64 {
return 0
}
func (m *ClientStats) GetNumCallsFinishedWithDropForRateLimiting() int64 {
if m != nil {
return m.NumCallsFinishedWithDropForRateLimiting
}
return 0
}
func (m *ClientStats) GetNumCallsFinishedWithDropForLoadBalancing() int64 {
if m != nil {
return m.NumCallsFinishedWithDropForLoadBalancing
}
return 0
}
func (m *ClientStats) GetNumCallsFinishedWithClientFailedToSend() int64 {
if m != nil {
return m.NumCallsFinishedWithClientFailedToSend
@@ -313,27 +332,56 @@ func (m *ClientStats) GetNumCallsFinishedKnownReceived() int64 {
return 0
}
func (m *ClientStats) GetCallsFinishedWithDrop() []*ClientStatsPerToken {
if m != nil {
return m.CallsFinishedWithDrop
}
return nil
}
type LoadBalanceResponse struct {
// Types that are valid to be assigned to LoadBalanceResponseType:
// *LoadBalanceResponse_InitialResponse
// *LoadBalanceResponse_ServerList
LoadBalanceResponseType isLoadBalanceResponse_LoadBalanceResponseType `protobuf_oneof:"load_balance_response_type"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *LoadBalanceResponse) Reset() { *m = LoadBalanceResponse{} }
func (m *LoadBalanceResponse) String() string { return proto.CompactTextString(m) }
func (*LoadBalanceResponse) ProtoMessage() {}
func (*LoadBalanceResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
func (*LoadBalanceResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{4}
}
func (m *LoadBalanceResponse) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_LoadBalanceResponse.Unmarshal(m, b)
}
func (m *LoadBalanceResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_LoadBalanceResponse.Marshal(b, m, deterministic)
}
func (dst *LoadBalanceResponse) XXX_Merge(src proto.Message) {
xxx_messageInfo_LoadBalanceResponse.Merge(dst, src)
}
func (m *LoadBalanceResponse) XXX_Size() int {
return xxx_messageInfo_LoadBalanceResponse.Size(m)
}
func (m *LoadBalanceResponse) XXX_DiscardUnknown() {
xxx_messageInfo_LoadBalanceResponse.DiscardUnknown(m)
}
var xxx_messageInfo_LoadBalanceResponse proto.InternalMessageInfo
type isLoadBalanceResponse_LoadBalanceResponseType interface {
isLoadBalanceResponse_LoadBalanceResponseType()
}
type LoadBalanceResponse_InitialResponse struct {
InitialResponse *InitialLoadBalanceResponse `protobuf:"bytes,1,opt,name=initial_response,json=initialResponse,oneof"`
InitialResponse *InitialLoadBalanceResponse `protobuf:"bytes,1,opt,name=initial_response,json=initialResponse,proto3,oneof"`
}
type LoadBalanceResponse_ServerList struct {
ServerList *ServerList `protobuf:"bytes,2,opt,name=server_list,json=serverList,oneof"`
ServerList *ServerList `protobuf:"bytes,2,opt,name=server_list,json=serverList,proto3,oneof"`
}
func (*LoadBalanceResponse_InitialResponse) isLoadBalanceResponse_LoadBalanceResponseType() {}
@@ -419,12 +467,12 @@ func _LoadBalanceResponse_OneofSizer(msg proto.Message) (n int) {
switch x := m.LoadBalanceResponseType.(type) {
case *LoadBalanceResponse_InitialResponse:
s := proto.Size(x.InitialResponse)
n += proto.SizeVarint(1<<3 | proto.WireBytes)
n += 1 // tag and wire
n += proto.SizeVarint(uint64(s))
n += s
case *LoadBalanceResponse_ServerList:
s := proto.Size(x.ServerList)
n += proto.SizeVarint(2<<3 | proto.WireBytes)
n += 1 // tag and wire
n += proto.SizeVarint(uint64(s))
n += s
case nil:
@@ -440,17 +488,39 @@ type InitialLoadBalanceResponse struct {
// the response, the client should open a separate connection to the
// load_balancer_delegate and call the BalanceLoad method. Its length should
// be less than 64 bytes.
LoadBalancerDelegate string `protobuf:"bytes,1,opt,name=load_balancer_delegate,json=loadBalancerDelegate" json:"load_balancer_delegate,omitempty"`
LoadBalancerDelegate string `protobuf:"bytes,1,opt,name=load_balancer_delegate,json=loadBalancerDelegate,proto3" json:"load_balancer_delegate,omitempty"`
// This interval defines how often the client should send the client stats
// to the load balancer. Stats should only be reported when the duration is
// positive.
ClientStatsReportInterval *Duration `protobuf:"bytes,2,opt,name=client_stats_report_interval,json=clientStatsReportInterval" json:"client_stats_report_interval,omitempty"`
ClientStatsReportInterval *duration.Duration `protobuf:"bytes,2,opt,name=client_stats_report_interval,json=clientStatsReportInterval,proto3" json:"client_stats_report_interval,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *InitialLoadBalanceResponse) Reset() { *m = InitialLoadBalanceResponse{} }
func (m *InitialLoadBalanceResponse) String() string { return proto.CompactTextString(m) }
func (*InitialLoadBalanceResponse) ProtoMessage() {}
func (*InitialLoadBalanceResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
func (*InitialLoadBalanceResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{5}
}
func (m *InitialLoadBalanceResponse) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_InitialLoadBalanceResponse.Unmarshal(m, b)
}
func (m *InitialLoadBalanceResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_InitialLoadBalanceResponse.Marshal(b, m, deterministic)
}
func (dst *InitialLoadBalanceResponse) XXX_Merge(src proto.Message) {
xxx_messageInfo_InitialLoadBalanceResponse.Merge(dst, src)
}
func (m *InitialLoadBalanceResponse) XXX_Size() int {
return xxx_messageInfo_InitialLoadBalanceResponse.Size(m)
}
func (m *InitialLoadBalanceResponse) XXX_DiscardUnknown() {
xxx_messageInfo_InitialLoadBalanceResponse.DiscardUnknown(m)
}
var xxx_messageInfo_InitialLoadBalanceResponse proto.InternalMessageInfo
func (m *InitialLoadBalanceResponse) GetLoadBalancerDelegate() string {
if m != nil {
@@ -459,7 +529,7 @@ func (m *InitialLoadBalanceResponse) GetLoadBalancerDelegate() string {
return ""
}
func (m *InitialLoadBalanceResponse) GetClientStatsReportInterval() *Duration {
func (m *InitialLoadBalanceResponse) GetClientStatsReportInterval() *duration.Duration {
if m != nil {
return m.ClientStatsReportInterval
}
@@ -471,13 +541,35 @@ type ServerList struct {
// be updated when server resolutions change or as needed to balance load
// across more servers. The client should consume the server list in order
// unless instructed otherwise via the client_config.
Servers []*Server `protobuf:"bytes,1,rep,name=servers" json:"servers,omitempty"`
Servers []*Server `protobuf:"bytes,1,rep,name=servers,proto3" json:"servers,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ServerList) Reset() { *m = ServerList{} }
func (m *ServerList) String() string { return proto.CompactTextString(m) }
func (*ServerList) ProtoMessage() {}
func (*ServerList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
func (*ServerList) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{6}
}
func (m *ServerList) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ServerList.Unmarshal(m, b)
}
func (m *ServerList) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ServerList.Marshal(b, m, deterministic)
}
func (dst *ServerList) XXX_Merge(src proto.Message) {
xxx_messageInfo_ServerList.Merge(dst, src)
}
func (m *ServerList) XXX_Size() int {
return xxx_messageInfo_ServerList.Size(m)
}
func (m *ServerList) XXX_DiscardUnknown() {
xxx_messageInfo_ServerList.DiscardUnknown(m)
}
var xxx_messageInfo_ServerList proto.InternalMessageInfo
func (m *ServerList) GetServers() []*Server {
if m != nil {
@@ -486,35 +578,52 @@ func (m *ServerList) GetServers() []*Server {
return nil
}
// Contains server information. When none of the [drop_for_*] fields are true,
// use the other fields. When drop_for_rate_limiting is true, ignore all other
// fields. Use drop_for_load_balancing only when it is true and
// drop_for_rate_limiting is false.
// Contains server information. When the drop field is not true, use the other
// fields.
type Server struct {
// A resolved address for the server, serialized in network-byte-order. It may
// either be an IPv4 or IPv6 address.
IpAddress []byte `protobuf:"bytes,1,opt,name=ip_address,json=ipAddress,proto3" json:"ip_address,omitempty"`
// A resolved port number for the server.
Port int32 `protobuf:"varint,2,opt,name=port" json:"port,omitempty"`
Port int32 `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
// An opaque but printable token given to the frontend for each pick. All
// frontend requests for that pick must include the token in its initial
// metadata. The token is used by the backend to verify the request and to
// allow the backend to report load to the gRPC LB system.
//
// Its length is variable but less than 50 bytes.
LoadBalanceToken string `protobuf:"bytes,3,opt,name=load_balance_token,json=loadBalanceToken" json:"load_balance_token,omitempty"`
// Indicates whether this particular request should be dropped by the client
// for rate limiting.
DropForRateLimiting bool `protobuf:"varint,4,opt,name=drop_for_rate_limiting,json=dropForRateLimiting" json:"drop_for_rate_limiting,omitempty"`
// Indicates whether this particular request should be dropped by the client
// for load balancing.
DropForLoadBalancing bool `protobuf:"varint,5,opt,name=drop_for_load_balancing,json=dropForLoadBalancing" json:"drop_for_load_balancing,omitempty"`
// allow the backend to report load to the gRPC LB system. The token is also
// used in client stats for reporting dropped calls.
LoadBalanceToken string `protobuf:"bytes,3,opt,name=load_balance_token,json=loadBalanceToken,proto3" json:"load_balance_token,omitempty"`
// Indicates whether this particular request should be dropped by the client.
// If the request is dropped, there will be a corresponding entry in
// ClientStats.calls_finished_with_drop.
Drop bool `protobuf:"varint,4,opt,name=drop,proto3" json:"drop,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Server) Reset() { *m = Server{} }
func (m *Server) String() string { return proto.CompactTextString(m) }
func (*Server) ProtoMessage() {}
func (*Server) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
func (*Server) Descriptor() ([]byte, []int) {
return fileDescriptor_messages_b3d89fcb5aa158f8, []int{7}
}
func (m *Server) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Server.Unmarshal(m, b)
}
func (m *Server) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Server.Marshal(b, m, deterministic)
}
func (dst *Server) XXX_Merge(src proto.Message) {
xxx_messageInfo_Server.Merge(dst, src)
}
func (m *Server) XXX_Size() int {
return xxx_messageInfo_Server.Size(m)
}
func (m *Server) XXX_DiscardUnknown() {
xxx_messageInfo_Server.DiscardUnknown(m)
}
var xxx_messageInfo_Server proto.InternalMessageInfo
func (m *Server) GetIpAddress() []byte {
if m != nil {
@@ -537,25 +646,17 @@ func (m *Server) GetLoadBalanceToken() string {
return ""
}
func (m *Server) GetDropForRateLimiting() bool {
func (m *Server) GetDrop() bool {
if m != nil {
return m.DropForRateLimiting
}
return false
}
func (m *Server) GetDropForLoadBalancing() bool {
if m != nil {
return m.DropForLoadBalancing
return m.Drop
}
return false
}
func init() {
proto.RegisterType((*Duration)(nil), "grpc.lb.v1.Duration")
proto.RegisterType((*Timestamp)(nil), "grpc.lb.v1.Timestamp")
proto.RegisterType((*LoadBalanceRequest)(nil), "grpc.lb.v1.LoadBalanceRequest")
proto.RegisterType((*InitialLoadBalanceRequest)(nil), "grpc.lb.v1.InitialLoadBalanceRequest")
proto.RegisterType((*ClientStatsPerToken)(nil), "grpc.lb.v1.ClientStatsPerToken")
proto.RegisterType((*ClientStats)(nil), "grpc.lb.v1.ClientStats")
proto.RegisterType((*LoadBalanceResponse)(nil), "grpc.lb.v1.LoadBalanceResponse")
proto.RegisterType((*InitialLoadBalanceResponse)(nil), "grpc.lb.v1.InitialLoadBalanceResponse")
@@ -563,53 +664,55 @@ func init() {
proto.RegisterType((*Server)(nil), "grpc.lb.v1.Server")
}
func init() { proto.RegisterFile("grpc_lb_v1/messages/messages.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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func init() {
proto.RegisterFile("grpc_lb_v1/messages/messages.proto", fileDescriptor_messages_b3d89fcb5aa158f8)
}
var fileDescriptor_messages_b3d89fcb5aa158f8 = []byte{
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0xf7, 0x05, 0x00, 0x00,
}

82
vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages/messages.proto generated vendored
View File

@@ -14,35 +14,11 @@
syntax = "proto3";
import "google/protobuf/duration.proto";
import "google/protobuf/timestamp.proto";
package grpc.lb.v1;
option go_package = "messages";
message Duration {
// Signed seconds of the span of time. Must be from -315,576,000,000
// to +315,576,000,000 inclusive.
int64 seconds = 1;
// Signed fractions of a second at nanosecond resolution of the span
// of time. 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. Must be from -999,999,999
// to +999,999,999 inclusive.
int32 nanos = 2;
}
message Timestamp {
// Represents seconds of UTC time since Unix epoch
// 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
// 9999-12-31T23:59:59Z inclusive.
int64 seconds = 1;
// Non-negative fractions of a second at nanosecond resolution. Negative
// second values with fractions must still have non-negative nanos values
// that count forward in time. Must be from 0 to 999,999,999
// inclusive.
int32 nanos = 2;
}
option go_package = "google.golang.org/grpc/grpclb/grpc_lb_v1/messages";
message LoadBalanceRequest {
oneof load_balance_request_type {
@@ -56,16 +32,25 @@ message LoadBalanceRequest {
}
message InitialLoadBalanceRequest {
// Name of load balanced service (IE, balancer.service.com)
// Name of load balanced service (IE, balancer.service.com). Its
// length should be less than 256 bytes.
string name = 1;
}
// Contains the number of calls finished for a particular load balance token.
message ClientStatsPerToken {
// See Server.load_balance_token.
string load_balance_token = 1;
// The total number of RPCs that finished associated with the token.
int64 num_calls = 2;
}
// Contains client level statistics that are useful to load balancing. Each
// count except the timestamp should be reset to zero after reporting the stats.
message ClientStats {
// The timestamp of generating the report.
Timestamp timestamp = 1;
google.protobuf.Timestamp timestamp = 1;
// The total number of RPCs that started.
int64 num_calls_started = 2;
@@ -73,20 +58,17 @@ message ClientStats {
// The total number of RPCs that finished.
int64 num_calls_finished = 3;
// The total number of RPCs that were dropped by the client because of rate
// limiting.
int64 num_calls_finished_with_drop_for_rate_limiting = 4;
// The total number of RPCs that were dropped by the client because of load
// balancing.
int64 num_calls_finished_with_drop_for_load_balancing = 5;
// The total number of RPCs that failed to reach a server except dropped RPCs.
int64 num_calls_finished_with_client_failed_to_send = 6;
// The total number of RPCs that finished and are known to have been received
// by a server.
int64 num_calls_finished_known_received = 7;
// The list of dropped calls.
repeated ClientStatsPerToken calls_finished_with_drop = 8;
reserved 4, 5;
}
message LoadBalanceResponse {
@@ -111,7 +93,7 @@ message InitialLoadBalanceResponse {
// This interval defines how often the client should send the client stats
// to the load balancer. Stats should only be reported when the duration is
// positive.
Duration client_stats_report_interval = 2;
google.protobuf.Duration client_stats_report_interval = 2;
}
message ServerList {
@@ -125,10 +107,8 @@ message ServerList {
reserved 3;
}
// Contains server information. When none of the [drop_for_*] fields are true,
// use the other fields. When drop_for_rate_limiting is true, ignore all other
// fields. Use drop_for_load_balancing only when it is true and
// drop_for_rate_limiting is false.
// Contains server information. When the drop field is not true, use the other
// fields.
message Server {
// A resolved address for the server, serialized in network-byte-order. It may
// either be an IPv4 or IPv6 address.
@@ -140,16 +120,14 @@ message Server {
// An opaque but printable token given to the frontend for each pick. All
// frontend requests for that pick must include the token in its initial
// metadata. The token is used by the backend to verify the request and to
// allow the backend to report load to the gRPC LB system.
//
// Its length is variable but less than 50 bytes.
// allow the backend to report load to the gRPC LB system. The token is also
// used in client stats for reporting dropped calls.
string load_balance_token = 3;
// Indicates whether this particular request should be dropped by the client
// for rate limiting.
bool drop_for_rate_limiting = 4;
// Indicates whether this particular request should be dropped by the client.
// If the request is dropped, there will be a corresponding entry in
// ClientStats.calls_finished_with_drop.
bool drop = 4;
// Indicates whether this particular request should be dropped by the client
// for load balancing.
bool drop_for_load_balancing = 5;
reserved 5;
}

3
vendor/google.golang.org/grpc/grpclog/grpclog.go generated vendored
View File

@@ -105,18 +105,21 @@ func Fatalln(args ...interface{}) {
}
// Print prints to the logger. Arguments are handled in the manner of fmt.Print.
//
// Deprecated: use Info.
func Print(args ...interface{}) {
logger.Info(args...)
}
// Printf prints to the logger. Arguments are handled in the manner of fmt.Printf.
//
// Deprecated: use Infof.
func Printf(format string, args ...interface{}) {
logger.Infof(format, args...)
}
// Println prints to the logger. Arguments are handled in the manner of fmt.Println.
//
// Deprecated: use Infoln.
func Println(args ...interface{}) {
logger.Infoln(args...)

2
vendor/google.golang.org/grpc/grpclog/logger.go generated vendored
View File

@@ -19,6 +19,7 @@
package grpclog
// Logger mimics golang's standard Logger as an interface.
//
// Deprecated: use LoggerV2.
type Logger interface {
Fatal(args ...interface{})
@@ -31,6 +32,7 @@ type Logger interface {
// SetLogger sets the logger that is used in grpc. Call only from
// init() functions.
//
// Deprecated: use SetLoggerV2.
func SetLogger(l Logger) {
logger = &loggerWrapper{Logger: l}

2
vendor/google.golang.org/grpc/health/BUILD generated vendored
View File

@@ -8,9 +8,9 @@ go_library(
visibility = ["//visibility:public"],
deps = [
"//vendor/golang.org/x/net/context:go_default_library",
"//vendor/google.golang.org/grpc:go_default_library",
"//vendor/google.golang.org/grpc/codes:go_default_library",
"//vendor/google.golang.org/grpc/health/grpc_health_v1:go_default_library",
"//vendor/google.golang.org/grpc/status:go_default_library",
],
)

113
vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go generated vendored
View File

@@ -1,16 +1,6 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: grpc_health_v1/health.proto
// source: grpc/health/v1/health.proto
/*
Package grpc_health_v1 is a generated protocol buffer package.
It is generated from these files:
grpc_health_v1/health.proto
It has these top-level messages:
HealthCheckRequest
HealthCheckResponse
*/
package grpc_health_v1
import proto "github.com/golang/protobuf/proto"
@@ -56,17 +46,39 @@ func (x HealthCheckResponse_ServingStatus) String() string {
return proto.EnumName(HealthCheckResponse_ServingStatus_name, int32(x))
}
func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) {
return fileDescriptor0, []int{1, 0}
return fileDescriptor_health_85731b6c49265086, []int{1, 0}
}
type HealthCheckRequest struct {
Service string `protobuf:"bytes,1,opt,name=service" json:"service,omitempty"`
Service string `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *HealthCheckRequest) Reset() { *m = HealthCheckRequest{} }
func (m *HealthCheckRequest) String() string { return proto.CompactTextString(m) }
func (*HealthCheckRequest) ProtoMessage() {}
func (*HealthCheckRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
func (*HealthCheckRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_health_85731b6c49265086, []int{0}
}
func (m *HealthCheckRequest) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_HealthCheckRequest.Unmarshal(m, b)
}
func (m *HealthCheckRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_HealthCheckRequest.Marshal(b, m, deterministic)
}
func (dst *HealthCheckRequest) XXX_Merge(src proto.Message) {
xxx_messageInfo_HealthCheckRequest.Merge(dst, src)
}
func (m *HealthCheckRequest) XXX_Size() int {
return xxx_messageInfo_HealthCheckRequest.Size(m)
}
func (m *HealthCheckRequest) XXX_DiscardUnknown() {
xxx_messageInfo_HealthCheckRequest.DiscardUnknown(m)
}
var xxx_messageInfo_HealthCheckRequest proto.InternalMessageInfo
func (m *HealthCheckRequest) GetService() string {
if m != nil {
@@ -76,13 +88,35 @@ func (m *HealthCheckRequest) GetService() string {
}
type HealthCheckResponse struct {
Status HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
Status HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,proto3,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *HealthCheckResponse) Reset() { *m = HealthCheckResponse{} }
func (m *HealthCheckResponse) String() string { return proto.CompactTextString(m) }
func (*HealthCheckResponse) ProtoMessage() {}
func (*HealthCheckResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (*HealthCheckResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_health_85731b6c49265086, []int{1}
}
func (m *HealthCheckResponse) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_HealthCheckResponse.Unmarshal(m, b)
}
func (m *HealthCheckResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_HealthCheckResponse.Marshal(b, m, deterministic)
}
func (dst *HealthCheckResponse) XXX_Merge(src proto.Message) {
xxx_messageInfo_HealthCheckResponse.Merge(dst, src)
}
func (m *HealthCheckResponse) XXX_Size() int {
return xxx_messageInfo_HealthCheckResponse.Size(m)
}
func (m *HealthCheckResponse) XXX_DiscardUnknown() {
xxx_messageInfo_HealthCheckResponse.DiscardUnknown(m)
}
var xxx_messageInfo_HealthCheckResponse proto.InternalMessageInfo
func (m *HealthCheckResponse) GetStatus() HealthCheckResponse_ServingStatus {
if m != nil {
@@ -105,8 +139,9 @@ var _ grpc.ClientConn
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// Client API for Health service
// HealthClient is the client API for Health service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type HealthClient interface {
Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error)
}
@@ -121,15 +156,14 @@ func NewHealthClient(cc *grpc.ClientConn) HealthClient {
func (c *healthClient) Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) {
out := new(HealthCheckResponse)
err := grpc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, c.cc, opts...)
err := c.cc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for Health service
// HealthServer is the server API for Health service.
type HealthServer interface {
Check(context.Context, *HealthCheckRequest) (*HealthCheckResponse, error)
}
@@ -166,25 +200,28 @@ var _Health_serviceDesc = grpc.ServiceDesc{
},
},
Streams: []grpc.StreamDesc{},
Metadata: "grpc_health_v1/health.proto",
Metadata: "grpc/health/v1/health.proto",
}
func init() { proto.RegisterFile("grpc_health_v1/health.proto", fileDescriptor0) }
func init() { proto.RegisterFile("grpc/health/v1/health.proto", fileDescriptor_health_85731b6c49265086) }
var fileDescriptor0 = []byte{
// 213 bytes of a gzipped FileDescriptorProto
var fileDescriptor_health_85731b6c49265086 = []byte{
// 271 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4e, 0x2f, 0x2a, 0x48,
0x8e, 0xcf, 0x48, 0x4d, 0xcc, 0x29, 0xc9, 0x88, 0x2f, 0x33, 0xd4, 0x87, 0xb0, 0xf4, 0x0a, 0x8a,
0xf2, 0x4b, 0xf2, 0x85, 0xf8, 0x40, 0x92, 0x7a, 0x50, 0xa1, 0x32, 0x43, 0x25, 0x3d, 0x2e, 0x21,
0x0f, 0x30, 0xc7, 0x39, 0x23, 0x35, 0x39, 0x3b, 0x28, 0xb5, 0xb0, 0x34, 0xb5, 0xb8, 0x44, 0x48,
0x82, 0x8b, 0xbd, 0x38, 0xb5, 0xa8, 0x2c, 0x33, 0x39, 0x55, 0x82, 0x51, 0x81, 0x51, 0x83, 0x33,
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0x20, 0x60, 0x01, 0x00, 0x00,
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0x93, 0x8b, 0xad, 0xb8, 0x24, 0xb1, 0xa4, 0xb4, 0x18, 0xac, 0x81, 0xcf, 0xc8, 0x50, 0x0f, 0xd5,
0x22, 0x3d, 0x2c, 0x9a, 0xf4, 0x82, 0x41, 0x86, 0xe6, 0xa5, 0x07, 0x83, 0x35, 0x06, 0x41, 0x0d,
0x50, 0xb2, 0xe2, 0xe2, 0x45, 0x91, 0x10, 0xe2, 0xe6, 0x62, 0x0f, 0xf5, 0xf3, 0xf6, 0xf3, 0x0f,
0xf7, 0x13, 0x60, 0x00, 0x71, 0x82, 0x5d, 0x83, 0xc2, 0x3c, 0xfd, 0xdc, 0x05, 0x18, 0x85, 0xf8,
0xb9, 0xb8, 0xfd, 0xfc, 0x43, 0xe2, 0x61, 0x02, 0x4c, 0x46, 0x51, 0x5c, 0x6c, 0x10, 0x8b, 0x84,
0x02, 0xb8, 0x58, 0xc1, 0x96, 0x09, 0x29, 0xe1, 0x75, 0x09, 0xd8, 0xbf, 0x52, 0xca, 0x44, 0xb8,
0xd6, 0x29, 0x91, 0x4b, 0x30, 0x33, 0x1f, 0x4d, 0xa1, 0x13, 0x37, 0x44, 0x65, 0x00, 0x28, 0x70,
0x03, 0x18, 0xa3, 0x74, 0xd2, 0xf3, 0xf3, 0xd3, 0x73, 0x52, 0xf5, 0xd2, 0xf3, 0x73, 0x12, 0xf3,
0xd2, 0xf5, 0xf2, 0x8b, 0xd2, 0xf5, 0x91, 0x63, 0x03, 0xc4, 0x8e, 0x87, 0xb0, 0xe3, 0xcb, 0x0c,
0x57, 0x31, 0xf1, 0xb9, 0x83, 0x4c, 0x83, 0x18, 0xa1, 0x17, 0x66, 0x98, 0xc4, 0x06, 0x8e, 0x24,
0x63, 0x40, 0x00, 0x00, 0x00, 0xff, 0xff, 0xec, 0x66, 0x81, 0xcb, 0xc3, 0x01, 0x00, 0x00,
}

34
vendor/google.golang.org/grpc/health/grpc_health_v1/health.proto generated vendored
View File

@@ -1,34 +0,0 @@
// Copyright 2017 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.
syntax = "proto3";
package grpc.health.v1;
message HealthCheckRequest {
string service = 1;
}
message HealthCheckResponse {
enum ServingStatus {
UNKNOWN = 0;
SERVING = 1;
NOT_SERVING = 2;
}
ServingStatus status = 1;
}
service Health{
rpc Check(HealthCheckRequest) returns (HealthCheckResponse);
}

6
vendor/google.golang.org/grpc/health/health.go generated vendored
View File

@@ -16,7 +16,7 @@
*
*/
//go:generate protoc --go_out=plugins=grpc:. grpc_health_v1/health.proto
//go:generate ./regenerate.sh
// Package health provides some utility functions to health-check a server. The implementation
// is based on protobuf. Users need to write their own implementations if other IDLs are used.
@@ -26,9 +26,9 @@ import (
"sync"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
healthpb "google.golang.org/grpc/health/grpc_health_v1"
"google.golang.org/grpc/status"
)
// Server implements `service Health`.
@@ -60,7 +60,7 @@ func (s *Server) Check(ctx context.Context, in *healthpb.HealthCheckRequest) (*h
Status: status,
}, nil
}
return nil, grpc.Errorf(codes.NotFound, "unknown service")
return nil, status.Error(codes.NotFound, "unknown service")
}
// SetServingStatus is called when need to reset the serving status of a service

33
vendor/google.golang.org/grpc/health/regenerate.sh generated vendored Executable file
View File

@@ -0,0 +1,33 @@
#!/bin/bash
# Copyright 2018 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.
set -eux -o pipefail
TMP=$(mktemp -d)
function finish {
rm -rf "$TMP"
}
trap finish EXIT
pushd "$TMP"
mkdir -p grpc/health/v1
curl https://raw.githubusercontent.com/grpc/grpc-proto/master/grpc/health/v1/health.proto > grpc/health/v1/health.proto
protoc --go_out=plugins=grpc,paths=source_relative:. -I. grpc/health/v1/*.proto
popd
rm -f grpc_health_v1/*.pb.go
cp "$TMP"/grpc/health/v1/*.pb.go grpc_health_v1/

4
vendor/google.golang.org/grpc/interceptor.go generated vendored
View File

@@ -48,7 +48,9 @@ type UnaryServerInfo struct {
}
// UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal
// execution of a unary RPC.
// 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.
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

7
vendor/google.golang.org/grpc/internal/BUILD generated vendored
View File

@@ -17,7 +17,12 @@ filegroup(
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
srcs = [
":package-srcs",
"//vendor/google.golang.org/grpc/internal/backoff:all-srcs",
"//vendor/google.golang.org/grpc/internal/channelz:all-srcs",
"//vendor/google.golang.org/grpc/internal/grpcrand:all-srcs",
],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

24
vendor/google.golang.org/grpc/internal/backoff/BUILD generated vendored Normal file
View File

@@ -0,0 +1,24 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["backoff.go"],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/internal/backoff",
importpath = "google.golang.org/grpc/internal/backoff",
visibility = ["//vendor/google.golang.org/grpc:__subpackages__"],
deps = ["//vendor/google.golang.org/grpc/internal/grpcrand:go_default_library"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

78
vendor/google.golang.org/grpc/internal/backoff/backoff.go generated vendored Normal file
View File

@@ -0,0 +1,78 @@
/*
*
* Copyright 2017 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 backoff implement the backoff strategy for gRPC.
//
// This is kept in internal until the gRPC project decides whether or not to
// allow alternative backoff strategies.
package backoff
import (
"time"
"google.golang.org/grpc/internal/grpcrand"
)
// Strategy defines the methodology for backing off after a grpc connection
// failure.
//
type Strategy interface {
// Backoff returns the amount of time to wait before the next retry given
// the number of consecutive failures.
Backoff(retries int) time.Duration
}
const (
// baseDelay is the amount of time to wait before retrying after the first
// failure.
baseDelay = 1.0 * time.Second
// factor is applied to the backoff after each retry.
factor = 1.6
// jitter provides a range to randomize backoff delays.
jitter = 0.2
)
// Exponential implements exponential backoff algorithm as defined in
// https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
type Exponential struct {
// MaxDelay is the upper bound of backoff delay.
MaxDelay time.Duration
}
// Backoff returns the amount of time to wait before the next retry given the
// number of retries.
func (bc Exponential) Backoff(retries int) time.Duration {
if retries == 0 {
return baseDelay
}
backoff, max := float64(baseDelay), float64(bc.MaxDelay)
for backoff < max && retries > 0 {
backoff *= factor
retries--
}
if backoff > max {
backoff = max
}
// Randomize backoff delays so that if a cluster of requests start at
// the same time, they won't operate in lockstep.
backoff *= 1 + jitter*(grpcrand.Float64()*2-1)
if backoff < 0 {
return 0
}
return time.Duration(backoff)
}

30
vendor/google.golang.org/grpc/internal/channelz/BUILD generated vendored Normal file
View File

@@ -0,0 +1,30 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = [
"funcs.go",
"types.go",
],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/internal/channelz",
importpath = "google.golang.org/grpc/internal/channelz",
visibility = ["//vendor/google.golang.org/grpc:__subpackages__"],
deps = [
"//vendor/google.golang.org/grpc/connectivity:go_default_library",
"//vendor/google.golang.org/grpc/grpclog:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

573
vendor/google.golang.org/grpc/internal/channelz/funcs.go generated vendored Normal file
View File

@@ -0,0 +1,573 @@
/*
*
* Copyright 2018 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 defines APIs for enabling channelz service, entry
// registration/deletion, and accessing channelz data. It also defines channelz
// metric struct formats.
//
// All APIs in this package are experimental.
package channelz
import (
"sort"
"sync"
"sync/atomic"
"google.golang.org/grpc/grpclog"
)
var (
db dbWrapper
idGen idGenerator
// EntryPerPage defines the number of channelz entries to be shown on a web page.
EntryPerPage = 50
curState int32
)
// TurnOn turns on channelz data collection.
func TurnOn() {
if !IsOn() {
NewChannelzStorage()
atomic.StoreInt32(&curState, 1)
}
}
// IsOn returns whether channelz data collection is on.
func IsOn() bool {
return atomic.CompareAndSwapInt32(&curState, 1, 1)
}
// dbWarpper wraps around a reference to internal channelz data storage, and
// provide synchronized functionality to set and get the reference.
type dbWrapper struct {
mu sync.RWMutex
DB *channelMap
}
func (d *dbWrapper) set(db *channelMap) {
d.mu.Lock()
d.DB = db
d.mu.Unlock()
}
func (d *dbWrapper) get() *channelMap {
d.mu.RLock()
defer d.mu.RUnlock()
return d.DB
}
// NewChannelzStorage initializes channelz data storage and id generator.
//
// Note: This function is exported for testing purpose only. User should not call
// it in most cases.
func NewChannelzStorage() {
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),
})
idGen.reset()
}
// GetTopChannels returns a slice of top channel's ChannelMetric, along with a
// boolean indicating whether there's more top channels to be queried for.
//
// The arg id specifies that only top channel with id at or above it will be included
// in the result. The returned slice is up to a length of EntryPerPage, and is
// sorted in ascending id order.
func GetTopChannels(id int64) ([]*ChannelMetric, bool) {
return db.get().GetTopChannels(id)
}
// GetServers returns a slice of server's ServerMetric, along with a
// boolean indicating whether there's more servers to be queried for.
//
// The arg id specifies that only server with id at or above it will be included
// in the result. The returned slice is up to a length of EntryPerPage, and is
// sorted in ascending id order.
func GetServers(id int64) ([]*ServerMetric, bool) {
return db.get().GetServers(id)
}
// GetServerSockets returns a slice of server's (identified by id) normal socket's
// SocketMetric, along with a boolean indicating whether there's more sockets to
// be queried for.
//
// The arg startID specifies that only sockets with id at or above it will be
// included in the result. The returned slice is up to a length of EntryPerPage,
// and is sorted in ascending id order.
func GetServerSockets(id int64, startID int64) ([]*SocketMetric, bool) {
return db.get().GetServerSockets(id, startID)
}
// GetChannel returns the ChannelMetric for the channel (identified by id).
func GetChannel(id int64) *ChannelMetric {
return db.get().GetChannel(id)
}
// GetSubChannel returns the SubChannelMetric for the subchannel (identified by id).
func GetSubChannel(id int64) *SubChannelMetric {
return db.get().GetSubChannel(id)
}
// GetSocket returns the SocketInternalMetric for the socket (identified by id).
func GetSocket(id int64) *SocketMetric {
return db.get().GetSocket(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 {
id := idGen.genID()
cn := &channel{
refName: ref,
c: c,
subChans: make(map[int64]string),
nestedChans: make(map[int64]string),
id: id,
pid: pid,
}
if pid == 0 {
db.get().addChannel(id, cn, true, pid, ref)
} else {
db.get().addChannel(id, cn, false, pid, ref)
}
return id
}
// 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 {
grpclog.Error("a SubChannel's parent id cannot be 0")
return 0
}
id := idGen.genID()
sc := &subChannel{
refName: ref,
c: c,
sockets: make(map[int64]string),
id: id,
pid: pid,
}
db.get().addSubChannel(id, sc, pid, ref)
return id
}
// 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 {
id := idGen.genID()
svr := &server{
refName: ref,
s: s,
sockets: make(map[int64]string),
listenSockets: make(map[int64]string),
id: id,
}
db.get().addServer(id, svr)
return id
}
// 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 {
grpclog.Error("a ListenSocket's parent id cannot be 0")
return 0
}
id := idGen.genID()
ls := &listenSocket{refName: ref, s: s, id: id, pid: pid}
db.get().addListenSocket(id, ls, pid, ref)
return id
}
// 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
// (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 {
grpclog.Error("a NormalSocket's parent id cannot be 0")
return 0
}
id := idGen.genID()
ns := &normalSocket{refName: ref, s: s, id: id, pid: pid}
db.get().addNormalSocket(id, ns, pid, ref)
return id
}
// RemoveEntry removes an entry with unique channelz trakcing id to be id from
// channelz database.
func RemoveEntry(id int64) {
db.get().removeEntry(id)
}
// channelMap is the storage data structure for channelz.
// Methods of channelMap can be divided in two two categories with respect to locking.
// 1. Methods acquire the global lock.
// 2. Methods that can only be called when global lock is held.
// A second type of method need always to be called inside a first type of method.
type channelMap struct {
mu sync.RWMutex
topLevelChannels map[int64]struct{}
servers map[int64]*server
channels map[int64]*channel
subChannels map[int64]*subChannel
listenSockets map[int64]*listenSocket
normalSockets map[int64]*normalSocket
}
func (c *channelMap) addServer(id int64, s *server) {
c.mu.Lock()
s.cm = c
c.servers[id] = s
c.mu.Unlock()
}
func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64, ref string) {
c.mu.Lock()
cn.cm = c
c.channels[id] = cn
if isTopChannel {
c.topLevelChannels[id] = struct{}{}
} else {
c.findEntry(pid).addChild(id, cn)
}
c.mu.Unlock()
}
func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref string) {
c.mu.Lock()
sc.cm = c
c.subChannels[id] = sc
c.findEntry(pid).addChild(id, sc)
c.mu.Unlock()
}
func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref string) {
c.mu.Lock()
ls.cm = c
c.listenSockets[id] = ls
c.findEntry(pid).addChild(id, ls)
c.mu.Unlock()
}
func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64, ref string) {
c.mu.Lock()
ns.cm = c
c.normalSockets[id] = ns
c.findEntry(pid).addChild(id, ns)
c.mu.Unlock()
}
// removeEntry triggers the removal of an entry, which may not indeed delete the
// entry, if it has to wait on the deletion of its children, or may lead to a chain
// of entry deletion. For example, deleting the last socket of a gracefully shutting
// down server will lead to the server being also deleted.
func (c *channelMap) removeEntry(id int64) {
c.mu.Lock()
c.findEntry(id).triggerDelete()
c.mu.Unlock()
}
// c.mu must be held by the caller.
func (c *channelMap) findEntry(id int64) entry {
var v entry
var ok bool
if v, ok = c.channels[id]; ok {
return v
}
if v, ok = c.subChannels[id]; ok {
return v
}
if v, ok = c.servers[id]; ok {
return v
}
if v, ok = c.listenSockets[id]; ok {
return v
}
if v, ok = c.normalSockets[id]; ok {
return v
}
return &dummyEntry{idNotFound: id}
}
// c.mu must be held by the caller
// deleteEntry simply deletes an entry from the channelMap. Before calling this
// method, caller must check this entry is ready to be deleted, i.e removeEntry()
// has been called on it, and no children still exist.
// Conditionals are ordered by the expected frequency of deletion of each entity
// type, in order to optimize performance.
func (c *channelMap) deleteEntry(id int64) {
var ok bool
if _, ok = c.normalSockets[id]; ok {
delete(c.normalSockets, id)
return
}
if _, ok = c.subChannels[id]; ok {
delete(c.subChannels, id)
return
}
if _, ok = c.channels[id]; ok {
delete(c.channels, id)
delete(c.topLevelChannels, id)
return
}
if _, ok = c.listenSockets[id]; ok {
delete(c.listenSockets, id)
return
}
if _, ok = c.servers[id]; ok {
delete(c.servers, id)
return
}
}
type int64Slice []int64
func (s int64Slice) Len() int { return len(s) }
func (s int64Slice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s int64Slice) Less(i, j int) bool { return s[i] < s[j] }
func copyMap(m map[int64]string) map[int64]string {
n := make(map[int64]string)
for k, v := range m {
n[k] = v
}
return n
}
func min(a, b int) int {
if a < b {
return a
}
return b
}
func (c *channelMap) GetTopChannels(id int64) ([]*ChannelMetric, bool) {
c.mu.RLock()
l := len(c.topLevelChannels)
ids := make([]int64, 0, l)
cns := make([]*channel, 0, min(l, EntryPerPage))
for k := range c.topLevelChannels {
ids = append(ids, k)
}
sort.Sort(int64Slice(ids))
idx := sort.Search(len(ids), func(i int) bool { return ids[i] >= id })
count := 0
var end bool
var t []*ChannelMetric
for i, v := range ids[idx:] {
if count == EntryPerPage {
break
}
if cn, ok := c.channels[v]; ok {
cns = append(cns, cn)
t = append(t, &ChannelMetric{
NestedChans: copyMap(cn.nestedChans),
SubChans: copyMap(cn.subChans),
})
count++
}
if i == len(ids[idx:])-1 {
end = true
break
}
}
c.mu.RUnlock()
if count == 0 {
end = true
}
for i, cn := range cns {
t[i].ChannelData = cn.c.ChannelzMetric()
t[i].ID = cn.id
t[i].RefName = cn.refName
}
return t, end
}
func (c *channelMap) GetServers(id int64) ([]*ServerMetric, bool) {
c.mu.RLock()
l := len(c.servers)
ids := make([]int64, 0, l)
ss := make([]*server, 0, min(l, EntryPerPage))
for k := range c.servers {
ids = append(ids, k)
}
sort.Sort(int64Slice(ids))
idx := sort.Search(len(ids), func(i int) bool { return ids[i] >= id })
count := 0
var end bool
var s []*ServerMetric
for i, v := range ids[idx:] {
if count == EntryPerPage {
break
}
if svr, ok := c.servers[v]; ok {
ss = append(ss, svr)
s = append(s, &ServerMetric{
ListenSockets: copyMap(svr.listenSockets),
})
count++
}
if i == len(ids[idx:])-1 {
end = true
break
}
}
c.mu.RUnlock()
if count == 0 {
end = true
}
for i, svr := range ss {
s[i].ServerData = svr.s.ChannelzMetric()
s[i].ID = svr.id
s[i].RefName = svr.refName
}
return s, end
}
func (c *channelMap) GetServerSockets(id int64, startID int64) ([]*SocketMetric, bool) {
var svr *server
var ok bool
c.mu.RLock()
if svr, ok = c.servers[id]; !ok {
// server with id doesn't exist.
c.mu.RUnlock()
return nil, true
}
svrskts := svr.sockets
l := len(svrskts)
ids := make([]int64, 0, l)
sks := make([]*normalSocket, 0, min(l, EntryPerPage))
for k := range svrskts {
ids = append(ids, k)
}
sort.Sort((int64Slice(ids)))
idx := sort.Search(len(ids), func(i int) bool { return ids[i] >= id })
count := 0
var end bool
for i, v := range ids[idx:] {
if count == EntryPerPage {
break
}
if ns, ok := c.normalSockets[v]; ok {
sks = append(sks, ns)
count++
}
if i == len(ids[idx:])-1 {
end = true
break
}
}
c.mu.RUnlock()
if count == 0 {
end = true
}
var s []*SocketMetric
for _, ns := range sks {
sm := &SocketMetric{}
sm.SocketData = ns.s.ChannelzMetric()
sm.ID = ns.id
sm.RefName = ns.refName
s = append(s, sm)
}
return s, end
}
func (c *channelMap) GetChannel(id int64) *ChannelMetric {
cm := &ChannelMetric{}
var cn *channel
var ok bool
c.mu.RLock()
if cn, ok = c.channels[id]; !ok {
// channel with id doesn't exist.
c.mu.RUnlock()
return nil
}
cm.NestedChans = copyMap(cn.nestedChans)
cm.SubChans = copyMap(cn.subChans)
c.mu.RUnlock()
cm.ChannelData = cn.c.ChannelzMetric()
cm.ID = cn.id
cm.RefName = cn.refName
return cm
}
func (c *channelMap) GetSubChannel(id int64) *SubChannelMetric {
cm := &SubChannelMetric{}
var sc *subChannel
var ok bool
c.mu.RLock()
if sc, ok = c.subChannels[id]; !ok {
// subchannel with id doesn't exist.
c.mu.RUnlock()
return nil
}
cm.Sockets = copyMap(sc.sockets)
c.mu.RUnlock()
cm.ChannelData = sc.c.ChannelzMetric()
cm.ID = sc.id
cm.RefName = sc.refName
return cm
}
func (c *channelMap) GetSocket(id int64) *SocketMetric {
sm := &SocketMetric{}
c.mu.RLock()
if ls, ok := c.listenSockets[id]; ok {
c.mu.RUnlock()
sm.SocketData = ls.s.ChannelzMetric()
sm.ID = ls.id
sm.RefName = ls.refName
return sm
}
if ns, ok := c.normalSockets[id]; ok {
c.mu.RUnlock()
sm.SocketData = ns.s.ChannelzMetric()
sm.ID = ns.id
sm.RefName = ns.refName
return sm
}
c.mu.RUnlock()
return nil
}
type idGenerator struct {
id int64
}
func (i *idGenerator) reset() {
atomic.StoreInt64(&i.id, 0)
}
func (i *idGenerator) genID() int64 {
return atomic.AddInt64(&i.id, 1)
}

418
vendor/google.golang.org/grpc/internal/channelz/types.go generated vendored Normal file
View File

@@ -0,0 +1,418 @@
/*
*
* Copyright 2018 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 (
"net"
"time"
"google.golang.org/grpc/connectivity"
"google.golang.org/grpc/grpclog"
)
// entry represents a node in the channelz database.
type entry interface {
// addChild adds a child e, whose channelz id is id to child list
addChild(id int64, e entry)
// deleteChild deletes a child with channelz id to be id from child list
deleteChild(id int64)
// triggerDelete tries to delete self from channelz database. However, if child
// list is not empty, then deletion from the database is on hold until the last
// child is deleted from database.
triggerDelete()
// deleteSelfIfReady check whether triggerDelete() has been called before, and whether child
// list is now empty. If both conditions are met, then delete self from database.
deleteSelfIfReady()
}
// dummyEntry is a fake entry to handle entry not found case.
type dummyEntry struct {
idNotFound int64
}
func (d *dummyEntry) addChild(id int64, e entry) {
// Note: It is possible for a normal program to reach here under race condition.
// For example, there could be a race between ClientConn.Close() info being propagated
// to addrConn and http2Client. ClientConn.Close() cancel the context and result
// in http2Client to error. The error info is then caught by transport monitor
// and before addrConn.tearDown() is called in side ClientConn.Close(). Therefore,
// the addrConn will create a new transport. And when registering the new transport in
// channelz, its parent addrConn could have already been torn down and deleted
// from channelz tracking, and thus reach the code here.
grpclog.Infof("attempt to add child of type %T with id %d to a parent (id=%d) that doesn't currently exist", e, id, d.idNotFound)
}
func (d *dummyEntry) deleteChild(id int64) {
// It is possible for a normal program to reach here under race condition.
// Refer to the example described in addChild().
grpclog.Infof("attempt to delete child with id %d from a parent (id=%d) that doesn't currently exist", id, d.idNotFound)
}
func (d *dummyEntry) triggerDelete() {
grpclog.Warningf("attempt to delete an entry (id=%d) that doesn't currently exist", d.idNotFound)
}
func (*dummyEntry) deleteSelfIfReady() {
// code should not reach here. deleteSelfIfReady is always called on an existing entry.
}
// ChannelMetric defines the info channelz provides for a specific Channel, which
// includes ChannelInternalMetric and channelz-specific data, such as channelz id,
// child list, etc.
type ChannelMetric struct {
// ID is the channelz id of this channel.
ID int64
// RefName is the human readable reference string of this channel.
RefName string
// ChannelData contains channel internal metric reported by the channel through
// ChannelzMetric().
ChannelData *ChannelInternalMetric
// NestedChans tracks the nested channel type children of this channel in the format of
// a map from nested channel channelz id to corresponding reference string.
NestedChans map[int64]string
// SubChans tracks the subchannel type children of this channel in the format of a
// map from subchannel channelz id to corresponding reference string.
SubChans map[int64]string
// Sockets tracks the socket type children of this channel in the format of a map
// from socket channelz id to corresponding reference string.
// Note current grpc implementation doesn't allow channel having sockets directly,
// therefore, this is field is unused.
Sockets map[int64]string
}
// SubChannelMetric defines the info channelz provides for a specific SubChannel,
// which includes ChannelInternalMetric and channelz-specific data, such as
// channelz id, child list, etc.
type SubChannelMetric struct {
// ID is the channelz id of this subchannel.
ID int64
// RefName is the human readable reference string of this subchannel.
RefName string
// ChannelData contains subchannel internal metric reported by the subchannel
// through ChannelzMetric().
ChannelData *ChannelInternalMetric
// NestedChans tracks the nested channel type children of this subchannel in the format of
// a map from nested channel channelz id to corresponding reference string.
// Note current grpc implementation doesn't allow subchannel to have nested channels
// as children, therefore, this field is unused.
NestedChans map[int64]string
// SubChans tracks the subchannel type children of this subchannel in the format of a
// map from subchannel channelz id to corresponding reference string.
// Note current grpc implementation doesn't allow subchannel to have subchannels
// as children, therefore, this field is unused.
SubChans map[int64]string
// Sockets tracks the socket type children of this subchannel in the format of a map
// from socket channelz id to corresponding reference string.
Sockets map[int64]string
}
// ChannelInternalMetric defines the struct that the implementor of Channel interface
// should return from ChannelzMetric().
type ChannelInternalMetric struct {
// current connectivity state of the channel.
State connectivity.State
// The target this channel originally tried to connect to. May be absent
Target string
// The number of calls started on the channel.
CallsStarted int64
// The number of calls that have completed with an OK status.
CallsSucceeded int64
// The number of calls that have a completed with a non-OK status.
CallsFailed int64
// The last time a call was started on the channel.
LastCallStartedTimestamp time.Time
//TODO: trace
}
// Channel is the interface that should be satisfied in order to be tracked by
// channelz as Channel or SubChannel.
type Channel interface {
ChannelzMetric() *ChannelInternalMetric
}
type channel struct {
refName string
c Channel
closeCalled bool
nestedChans map[int64]string
subChans map[int64]string
id int64
pid int64
cm *channelMap
}
func (c *channel) addChild(id int64, e entry) {
switch v := e.(type) {
case *subChannel:
c.subChans[id] = v.refName
case *channel:
c.nestedChans[id] = v.refName
default:
grpclog.Errorf("cannot add a child (id = %d) of type %T to a channel", id, e)
}
}
func (c *channel) deleteChild(id int64) {
delete(c.subChans, id)
delete(c.nestedChans, id)
c.deleteSelfIfReady()
}
func (c *channel) triggerDelete() {
c.closeCalled = true
c.deleteSelfIfReady()
}
func (c *channel) deleteSelfIfReady() {
if !c.closeCalled || len(c.subChans)+len(c.nestedChans) != 0 {
return
}
c.cm.deleteEntry(c.id)
// not top channel
if c.pid != 0 {
c.cm.findEntry(c.pid).deleteChild(c.id)
}
}
type subChannel struct {
refName string
c Channel
closeCalled bool
sockets map[int64]string
id int64
pid int64
cm *channelMap
}
func (sc *subChannel) addChild(id int64, e entry) {
if v, ok := e.(*normalSocket); ok {
sc.sockets[id] = v.refName
} else {
grpclog.Errorf("cannot add a child (id = %d) of type %T to a subChannel", id, e)
}
}
func (sc *subChannel) deleteChild(id int64) {
delete(sc.sockets, id)
sc.deleteSelfIfReady()
}
func (sc *subChannel) triggerDelete() {
sc.closeCalled = true
sc.deleteSelfIfReady()
}
func (sc *subChannel) deleteSelfIfReady() {
if !sc.closeCalled || len(sc.sockets) != 0 {
return
}
sc.cm.deleteEntry(sc.id)
sc.cm.findEntry(sc.pid).deleteChild(sc.id)
}
// SocketMetric defines the info channelz provides for a specific Socket, which
// includes SocketInternalMetric and channelz-specific data, such as channelz id, etc.
type SocketMetric struct {
// ID is the channelz id of this socket.
ID int64
// RefName is the human readable reference string of this socket.
RefName string
// SocketData contains socket internal metric reported by the socket through
// ChannelzMetric().
SocketData *SocketInternalMetric
}
// SocketInternalMetric defines the struct that the implementor of Socket interface
// should return from ChannelzMetric().
type SocketInternalMetric struct {
// The number of streams that have been started.
StreamsStarted int64
// The number of streams that have ended successfully:
// On client side, receiving frame with eos bit set.
// On server side, sending frame with eos bit set.
StreamsSucceeded int64
// The number of streams that have ended unsuccessfully:
// On client side, termination without receiving frame with eos bit set.
// On server side, termination without sending frame with eos bit set.
StreamsFailed int64
// The number of messages successfully sent on this socket.
MessagesSent int64
MessagesReceived int64
// The number of keep alives sent. This is typically implemented with HTTP/2
// ping messages.
KeepAlivesSent int64
// The last time a stream was created by this endpoint. Usually unset for
// servers.
LastLocalStreamCreatedTimestamp time.Time
// The last time a stream was created by the remote endpoint. Usually unset
// for clients.
LastRemoteStreamCreatedTimestamp time.Time
// The last time a message was sent by this endpoint.
LastMessageSentTimestamp time.Time
// The last time a message was received by this endpoint.
LastMessageReceivedTimestamp time.Time
// The amount of window, granted to the local endpoint by the remote endpoint.
// This may be slightly out of date due to network latency. This does NOT
// include stream level or TCP level flow control info.
LocalFlowControlWindow int64
// The amount of window, granted to the remote endpoint by the local endpoint.
// This may be slightly out of date due to network latency. This does NOT
// include stream level or TCP level flow control info.
RemoteFlowControlWindow int64
// The locally bound address.
LocalAddr net.Addr
// The remote bound address. May be absent.
RemoteAddr net.Addr
// Optional, represents the name of the remote endpoint, if different than
// the original target name.
RemoteName string
//TODO: socket options
//TODO: Security
}
// Socket is the interface that should be satisfied in order to be tracked by
// channelz as Socket.
type Socket interface {
ChannelzMetric() *SocketInternalMetric
}
type listenSocket struct {
refName string
s Socket
id int64
pid int64
cm *channelMap
}
func (ls *listenSocket) addChild(id int64, e entry) {
grpclog.Errorf("cannot add a child (id = %d) of type %T to a listen socket", id, e)
}
func (ls *listenSocket) deleteChild(id int64) {
grpclog.Errorf("cannot delete a child (id = %d) from a listen socket", id)
}
func (ls *listenSocket) triggerDelete() {
ls.cm.deleteEntry(ls.id)
ls.cm.findEntry(ls.pid).deleteChild(ls.id)
}
func (ls *listenSocket) deleteSelfIfReady() {
grpclog.Errorf("cannot call deleteSelfIfReady on a listen socket")
}
type normalSocket struct {
refName string
s Socket
id int64
pid int64
cm *channelMap
}
func (ns *normalSocket) addChild(id int64, e entry) {
grpclog.Errorf("cannot add a child (id = %d) of type %T to a normal socket", id, e)
}
func (ns *normalSocket) deleteChild(id int64) {
grpclog.Errorf("cannot delete a child (id = %d) from a normal socket", id)
}
func (ns *normalSocket) triggerDelete() {
ns.cm.deleteEntry(ns.id)
ns.cm.findEntry(ns.pid).deleteChild(ns.id)
}
func (ns *normalSocket) deleteSelfIfReady() {
grpclog.Errorf("cannot call deleteSelfIfReady on a normal socket")
}
// ServerMetric defines the info channelz provides for a specific Server, which
// includes ServerInternalMetric and channelz-specific data, such as channelz id,
// child list, etc.
type ServerMetric struct {
// ID is the channelz id of this server.
ID int64
// RefName is the human readable reference string of this server.
RefName string
// ServerData contains server internal metric reported by the server through
// ChannelzMetric().
ServerData *ServerInternalMetric
// ListenSockets tracks the listener socket type children of this server in the
// format of a map from socket channelz id to corresponding reference string.
ListenSockets map[int64]string
}
// ServerInternalMetric defines the struct that the implementor of Server interface
// should return from ChannelzMetric().
type ServerInternalMetric struct {
// The number of incoming calls started on the server.
CallsStarted int64
// The number of incoming calls that have completed with an OK status.
CallsSucceeded int64
// The number of incoming calls that have a completed with a non-OK status.
CallsFailed int64
// The last time a call was started on the server.
LastCallStartedTimestamp time.Time
//TODO: trace
}
// Server is the interface to be satisfied in order to be tracked by channelz as
// Server.
type Server interface {
ChannelzMetric() *ServerInternalMetric
}
type server struct {
refName string
s Server
closeCalled bool
sockets map[int64]string
listenSockets map[int64]string
id int64
cm *channelMap
}
func (s *server) addChild(id int64, e entry) {
switch v := e.(type) {
case *normalSocket:
s.sockets[id] = v.refName
case *listenSocket:
s.listenSockets[id] = v.refName
default:
grpclog.Errorf("cannot add a child (id = %d) of type %T to a server", id, e)
}
}
func (s *server) deleteChild(id int64) {
delete(s.sockets, id)
delete(s.listenSockets, id)
s.deleteSelfIfReady()
}
func (s *server) triggerDelete() {
s.closeCalled = true
s.deleteSelfIfReady()
}
func (s *server) deleteSelfIfReady() {
if !s.closeCalled || len(s.sockets)+len(s.listenSockets) != 0 {
return
}
s.cm.deleteEntry(s.id)
}

23
vendor/google.golang.org/grpc/internal/grpcrand/BUILD generated vendored Normal file
View File

@@ -0,0 +1,23 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["grpcrand.go"],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/internal/grpcrand",
importpath = "google.golang.org/grpc/internal/grpcrand",
visibility = ["//vendor/google.golang.org/grpc:__subpackages__"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

56
vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go generated vendored Normal file
View File

@@ -0,0 +1,56 @@
/*
*
* Copyright 2018 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 grpcrand implements math/rand functions in a concurrent-safe way
// with a global random source, independent of math/rand's global source.
package grpcrand
import (
"math/rand"
"sync"
"time"
)
var (
r = rand.New(rand.NewSource(time.Now().UnixNano()))
mu sync.Mutex
)
// Int63n implements rand.Int63n on the grpcrand global source.
func Int63n(n int64) int64 {
mu.Lock()
res := r.Int63n(n)
mu.Unlock()
return res
}
// Intn implements rand.Intn on the grpcrand global source.
func Intn(n int) int {
mu.Lock()
res := r.Intn(n)
mu.Unlock()
return res
}
// Float64 implements rand.Float64 on the grpcrand global source.
func Float64() float64 {
mu.Lock()
res := r.Float64()
mu.Unlock()
return res
}

30
vendor/google.golang.org/grpc/internal/internal.go generated vendored
View File

@@ -15,20 +15,22 @@
*
*/
// Package internal contains gRPC-internal code for testing, to avoid polluting
// the godoc of the top-level grpc package.
// Package internal contains gRPC-internal code, to avoid polluting
// the godoc of the top-level grpc package. It must not import any grpc
// symbols to avoid circular dependencies.
package internal
// TestingCloseConns closes all existing transports but keeps
// grpcServer.lis accepting new connections.
//
// The provided grpcServer must be of type *grpc.Server. It is untyped
// for circular dependency reasons.
var TestingCloseConns func(grpcServer interface{})
var (
// TestingUseHandlerImpl enables the http.Handler-based server implementation.
// It must be called before Serve and requires TLS credentials.
//
// The provided grpcServer must be of type *grpc.Server. It is untyped
// for circular dependency reasons.
var TestingUseHandlerImpl func(grpcServer interface{})
// TestingUseHandlerImpl enables the http.Handler-based server implementation.
// It must be called before Serve and requires TLS credentials.
//
// The provided grpcServer must be of type *grpc.Server. It is untyped
// for circular dependency reasons.
TestingUseHandlerImpl func(grpcServer interface{})
// WithContextDialer is exported by clientconn.go
WithContextDialer interface{} // func(context.Context, string) (net.Conn, error) grpc.DialOption
// WithResolverBuilder is exported by clientconn.go
WithResolverBuilder interface{} // func (resolver.Builder) grpc.DialOption
)

89
vendor/google.golang.org/grpc/metadata/metadata.go generated vendored
View File

@@ -17,7 +17,8 @@
*/
// Package metadata define the structure of the metadata supported by gRPC library.
// Please refer to https://grpc.io/docs/guides/wire.html for more information about custom-metadata.
// Please refer to https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
// for more information about custom-metadata.
package metadata
import (
@@ -27,7 +28,9 @@ import (
"golang.org/x/net/context"
)
// DecodeKeyValue returns k, v, nil. It is deprecated and should not be used.
// DecodeKeyValue returns k, v, nil.
//
// Deprecated: use k and v directly instead.
func DecodeKeyValue(k, v string) (string, string, error) {
return k, v, nil
}
@@ -94,6 +97,30 @@ func (md MD) Copy() MD {
return Join(md)
}
// Get obtains the values for a given key.
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.
func (md MD) Set(k string, vals ...string) {
if len(vals) == 0 {
return
}
k = strings.ToLower(k)
md[k] = vals
}
// Append adds the values to key k, not overwriting what was already stored at that key.
func (md MD) Append(k string, vals ...string) {
if len(vals) == 0 {
return
}
k = strings.ToLower(k)
md[k] = append(md[k], vals...)
}
// 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.
@@ -115,9 +142,26 @@ func NewIncomingContext(ctx context.Context, md MD) context.Context {
return context.WithValue(ctx, mdIncomingKey{}, md)
}
// NewOutgoingContext creates a new context with outgoing md attached.
// NewOutgoingContext creates a new context with outgoing md attached. If used
// in conjunction with AppendToOutgoingContext, NewOutgoingContext will
// overwrite any previously-appended metadata.
func NewOutgoingContext(ctx context.Context, md MD) context.Context {
return context.WithValue(ctx, mdOutgoingKey{}, md)
return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md})
}
// 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.
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)))
}
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)
return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md.md, added: added})
}
// FromIncomingContext returns the incoming metadata in ctx if it exists. The
@@ -128,10 +172,39 @@ func FromIncomingContext(ctx context.Context) (md MD, ok bool) {
return
}
// 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.
//
// This is intended for gRPC-internal use ONLY.
func FromOutgoingContextRaw(ctx context.Context) (MD, [][]string, bool) {
raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD)
if !ok {
return nil, nil, false
}
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 the copies of the returned MD.
func FromOutgoingContext(ctx context.Context) (md MD, ok bool) {
md, ok = ctx.Value(mdOutgoingKey{}).(MD)
return
// Modification should be made to copies of the returned MD.
func FromOutgoingContext(ctx context.Context) (MD, bool) {
raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD)
if !ok {
return nil, false
}
mds := make([]MD, 0, len(raw.added)+1)
mds = append(mds, raw.md)
for _, vv := range raw.added {
mds = append(mds, Pairs(vv...))
}
return Join(mds...), ok
}
type rawMD struct {
md MD
added [][]string
}

6
vendor/google.golang.org/grpc/naming/dns_resolver.go generated vendored
View File

@@ -153,10 +153,10 @@ type ipWatcher struct {
updateChan chan *Update
}
// Next returns the adrress resolution Update for the target. For IP address,
// the resolution is itself, thus polling name server is unncessary. Therefore,
// Next returns the address resolution Update for the target. For IP address,
// the resolution is itself, thus polling name server is unnecessary. Therefore,
// Next() will return an Update the first time it is called, and will be blocked
// for all following calls as no Update exisits until watcher is closed.
// for all following calls as no Update exists until watcher is closed.
func (i *ipWatcher) Next() ([]*Update, error) {
u, ok := <-i.updateChan
if !ok {

2
vendor/google.golang.org/grpc/naming/go17.go generated vendored
View File

@@ -1,4 +1,4 @@
// +build go1.7, !go1.8
// +build go1.6,!go1.8
/*
*

12
vendor/google.golang.org/grpc/naming/naming.go generated vendored
View File

@@ -18,20 +18,26 @@
// Package naming defines the naming API and related data structures for gRPC.
// The interface is EXPERIMENTAL and may be suject to change.
//
// Deprecated: please use package resolver.
package naming
// Operation defines the corresponding operations for a name resolution change.
//
// Deprecated: please use package resolver.
type Operation uint8
const (
// Add indicates a new address is added.
Add Operation = iota
// Delete indicates an exisiting address is deleted.
// Delete indicates an existing address is deleted.
Delete
)
// Update defines a name resolution update. Notice that it is not valid having both
// empty string Addr and nil Metadata in an Update.
//
// Deprecated: please use package resolver.
type Update struct {
// Op indicates the operation of the update.
Op Operation
@@ -43,12 +49,16 @@ type Update struct {
}
// Resolver creates a Watcher for a target to track its resolution changes.
//
// Deprecated: please use package resolver.
type Resolver interface {
// Resolve creates a Watcher for target.
Resolve(target string) (Watcher, error)
}
// Watcher watches for the updates on the specified target.
//
// Deprecated: please use package resolver.
type Watcher interface {
// Next blocks until an update or error happens. It may return one or more
// updates. The first call should get the full set of the results. It should

203
vendor/google.golang.org/grpc/picker_wrapper.go generated vendored
View File

@@ -19,12 +19,17 @@
package grpc
import (
"io"
"sync"
"sync/atomic"
"golang.org/x/net/context"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/internal/channelz"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/resolver"
"google.golang.org/grpc/status"
"google.golang.org/grpc/transport"
)
@@ -36,13 +41,57 @@ type pickerWrapper struct {
done bool
blockingCh chan struct{}
picker balancer.Picker
// The latest connection happened.
connErrMu sync.Mutex
connErr error
stickinessMDKey atomic.Value
stickiness *stickyStore
}
func newPickerWrapper() *pickerWrapper {
bp := &pickerWrapper{blockingCh: make(chan struct{})}
bp := &pickerWrapper{
blockingCh: make(chan struct{}),
stickiness: newStickyStore(),
}
return bp
}
func (bp *pickerWrapper) updateConnectionError(err error) {
bp.connErrMu.Lock()
bp.connErr = err
bp.connErrMu.Unlock()
}
func (bp *pickerWrapper) connectionError() error {
bp.connErrMu.Lock()
err := bp.connErr
bp.connErrMu.Unlock()
return err
}
func (bp *pickerWrapper) updateStickinessMDKey(newKey string) {
// No need to check ok because mdKey == "" if ok == false.
if oldKey, _ := bp.stickinessMDKey.Load().(string); oldKey != newKey {
bp.stickinessMDKey.Store(newKey)
bp.stickiness.reset(newKey)
}
}
func (bp *pickerWrapper) getStickinessMDKey() string {
// No need to check ok because mdKey == "" if ok == false.
mdKey, _ := bp.stickinessMDKey.Load().(string)
return mdKey
}
func (bp *pickerWrapper) clearStickinessState() {
if oldKey := bp.getStickinessMDKey(); oldKey != "" {
// There's no need to reset store if mdKey was "".
bp.stickiness.reset(oldKey)
}
}
// updatePicker is called by UpdateBalancerState. It unblocks all blocked pick.
func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
bp.mu.Lock()
@@ -57,6 +106,23 @@ func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
bp.mu.Unlock()
}
func doneChannelzWrapper(acw *acBalancerWrapper, done func(balancer.DoneInfo)) func(balancer.DoneInfo) {
acw.mu.Lock()
ac := acw.ac
acw.mu.Unlock()
ac.incrCallsStarted()
return func(b balancer.DoneInfo) {
if b.Err != nil && b.Err != io.EOF {
ac.incrCallsFailed()
} else {
ac.incrCallsSucceeded()
}
if done != nil {
done(b)
}
}
}
// pick returns the transport that will be used for the RPC.
// It may block in the following cases:
// - there's no picker
@@ -65,6 +131,27 @@ func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
// - the subConn returned by the current picker is not READY
// When one of these situations happens, pick blocks until the picker gets updated.
func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.PickOptions) (transport.ClientTransport, func(balancer.DoneInfo), error) {
mdKey := bp.getStickinessMDKey()
stickyKey, isSticky := stickyKeyFromContext(ctx, mdKey)
// Potential race here: if stickinessMDKey is updated after the above two
// lines, and this pick is a sticky pick, the following put could add an
// entry to sticky store with an outdated sticky key.
//
// The solution: keep the current md key in sticky store, and at the
// beginning of each get/put, check the mdkey against store.curMDKey.
// - Cons: one more string comparing for each get/put.
// - Pros: the string matching happens inside get/put, so the overhead for
// non-sticky RPCs will be minimal.
if isSticky {
if t, ok := bp.stickiness.get(mdKey, stickyKey); ok {
// Done function returned is always nil.
return t, nil, nil
}
}
var (
p balancer.Picker
ch chan struct{}
@@ -97,7 +184,7 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.
p = bp.picker
bp.mu.Unlock()
subConn, put, err := p.Pick(ctx, opts)
subConn, done, err := p.Pick(ctx, opts)
if err != nil {
switch err {
@@ -107,7 +194,7 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.
if !failfast {
continue
}
return nil, nil, status.Errorf(codes.Unavailable, "%v", err)
return nil, nil, status.Errorf(codes.Unavailable, "%v, latest connection error: %v", err, bp.connectionError())
default:
// err is some other error.
return nil, nil, toRPCErr(err)
@@ -120,7 +207,13 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.
continue
}
if t, ok := acw.getAddrConn().getReadyTransport(); ok {
return t, put, nil
if isSticky {
bp.stickiness.put(mdKey, stickyKey, acw)
}
if channelz.IsOn() {
return t, doneChannelzWrapper(acw, done), nil
}
return t, done, nil
}
grpclog.Infof("blockingPicker: the picked transport is not ready, loop back to repick")
// If ok == false, ac.state is not READY.
@@ -139,3 +232,105 @@ func (bp *pickerWrapper) close() {
bp.done = true
close(bp.blockingCh)
}
const stickinessKeyCountLimit = 1000
type stickyStoreEntry struct {
acw *acBalancerWrapper
addr resolver.Address
}
type stickyStore struct {
mu sync.Mutex
// curMDKey is check before every get/put to avoid races. The operation will
// abort immediately when the given mdKey is different from the curMDKey.
curMDKey string
store *linkedMap
}
func newStickyStore() *stickyStore {
return &stickyStore{
store: newLinkedMap(),
}
}
// reset clears the map in stickyStore, and set the currentMDKey to newMDKey.
func (ss *stickyStore) reset(newMDKey string) {
ss.mu.Lock()
ss.curMDKey = newMDKey
ss.store.clear()
ss.mu.Unlock()
}
// stickyKey is the key to look up in store. mdKey will be checked against
// curMDKey to avoid races.
func (ss *stickyStore) put(mdKey, stickyKey string, acw *acBalancerWrapper) {
ss.mu.Lock()
defer ss.mu.Unlock()
if mdKey != ss.curMDKey {
return
}
// TODO(stickiness): limit the total number of entries.
ss.store.put(stickyKey, &stickyStoreEntry{
acw: acw,
addr: acw.getAddrConn().getCurAddr(),
})
if ss.store.len() > stickinessKeyCountLimit {
ss.store.removeOldest()
}
}
// stickyKey is the key to look up in store. mdKey will be checked against
// curMDKey to avoid races.
func (ss *stickyStore) get(mdKey, stickyKey string) (transport.ClientTransport, bool) {
ss.mu.Lock()
defer ss.mu.Unlock()
if mdKey != ss.curMDKey {
return nil, false
}
entry, ok := ss.store.get(stickyKey)
if !ok {
return nil, false
}
ac := entry.acw.getAddrConn()
if ac.getCurAddr() != entry.addr {
ss.store.remove(stickyKey)
return nil, false
}
t, ok := ac.getReadyTransport()
if !ok {
ss.store.remove(stickyKey)
return nil, false
}
return t, true
}
// Get one value from metadata in ctx with key stickinessMDKey.
//
// It returns "", false if stickinessMDKey is an empty string.
func stickyKeyFromContext(ctx context.Context, stickinessMDKey string) (string, bool) {
if stickinessMDKey == "" {
return "", false
}
md, added, ok := metadata.FromOutgoingContextRaw(ctx)
if !ok {
return "", false
}
if vv, ok := md[stickinessMDKey]; ok {
if len(vv) > 0 {
return vv[0], true
}
}
for _, ss := range added {
for i := 0; i < len(ss)-1; i += 2 {
if ss[i] == stickinessMDKey {
return ss[i+1], true
}
}
}
return "", false
}

17
vendor/google.golang.org/grpc/pickfirst.go generated vendored
View File

@@ -26,6 +26,9 @@ import (
"google.golang.org/grpc/resolver"
)
// PickFirstBalancerName is the name of the pick_first balancer.
const PickFirstBalancerName = "pick_first"
func newPickfirstBuilder() balancer.Builder {
return &pickfirstBuilder{}
}
@@ -37,7 +40,7 @@ func (*pickfirstBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions
}
func (*pickfirstBuilder) Name() string {
return "pickfirst"
return PickFirstBalancerName
}
type pickfirstBalancer struct {
@@ -57,14 +60,20 @@ func (b *pickfirstBalancer) HandleResolvedAddrs(addrs []resolver.Address, err er
return
}
b.cc.UpdateBalancerState(connectivity.Idle, &picker{sc: b.sc})
b.sc.Connect()
} else {
b.sc.UpdateAddresses(addrs)
b.sc.Connect()
}
}
func (b *pickfirstBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
grpclog.Infof("pickfirstBalancer: HandleSubConnStateChange: %p, %v", sc, s)
if b.sc != sc || s == connectivity.Shutdown {
if b.sc != sc {
grpclog.Infof("pickfirstBalancer: ignored state change because sc is not recognized")
return
}
if s == connectivity.Shutdown {
b.sc = nil
return
}
@@ -93,3 +102,7 @@ func (p *picker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.
}
return p.sc, nil, nil
}
func init() {
balancer.Register(newPickfirstBuilder())
}

3
vendor/google.golang.org/grpc/proxy.go generated vendored
View File

@@ -82,8 +82,7 @@ func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, addr string) (_
Header: map[string][]string{"User-Agent": {grpcUA}},
})
req = req.WithContext(ctx)
if err := req.Write(conn); err != nil {
if err := sendHTTPRequest(ctx, req, conn); err != nil {
return nil, fmt.Errorf("failed to write the HTTP request: %v", err)
}

6
vendor/google.golang.org/grpc/resolver/BUILD generated vendored
View File

@@ -17,7 +17,11 @@ filegroup(
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
srcs = [
":package-srcs",
"//vendor/google.golang.org/grpc/resolver/dns:all-srcs",
"//vendor/google.golang.org/grpc/resolver/passthrough:all-srcs",
],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

33
vendor/google.golang.org/grpc/resolver/dns/BUILD generated vendored Normal file
View File

@@ -0,0 +1,33 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = [
"dns_resolver.go",
"go17.go",
"go18.go",
],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/resolver/dns",
importpath = "google.golang.org/grpc/resolver/dns",
visibility = ["//visibility:public"],
deps = [
"//vendor/golang.org/x/net/context:go_default_library",
"//vendor/google.golang.org/grpc/grpclog:go_default_library",
"//vendor/google.golang.org/grpc/internal/grpcrand:go_default_library",
"//vendor/google.golang.org/grpc/resolver:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

381
vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go generated vendored Normal file
View File

@@ -0,0 +1,381 @@
/*
*
* Copyright 2017 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 dns implements a dns resolver to be installed as the default resolver
// in grpc.
package dns
import (
"encoding/json"
"errors"
"fmt"
"net"
"os"
"strconv"
"strings"
"sync"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/internal/grpcrand"
"google.golang.org/grpc/resolver"
)
func init() {
resolver.Register(NewBuilder())
}
const (
defaultPort = "443"
defaultFreq = time.Minute * 30
golang = "GO"
// In DNS, service config is encoded in a TXT record via the mechanism
// described in RFC-1464 using the attribute name grpc_config.
txtAttribute = "grpc_config="
)
var (
errMissingAddr = errors.New("missing address")
)
// NewBuilder creates a dnsBuilder which is used to factory DNS resolvers.
func NewBuilder() resolver.Builder {
return &dnsBuilder{freq: defaultFreq}
}
type dnsBuilder struct {
// frequency of polling the DNS server.
freq time.Duration
}
// 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.BuildOption) (resolver.Resolver, error) {
if target.Authority != "" {
return nil, fmt.Errorf("Default DNS resolver does not support custom DNS server")
}
host, port, err := parseTarget(target.Endpoint)
if err != nil {
return nil, err
}
// IP address.
if net.ParseIP(host) != nil {
host, _ = formatIP(host)
addr := []resolver.Address{{Addr: host + ":" + port}}
i := &ipResolver{
cc: cc,
ip: addr,
rn: make(chan struct{}, 1),
q: make(chan struct{}),
}
cc.NewAddress(addr)
go i.watcher()
return i, nil
}
// DNS address (non-IP).
ctx, cancel := context.WithCancel(context.Background())
d := &dnsResolver{
freq: b.freq,
host: host,
port: port,
ctx: ctx,
cancel: cancel,
cc: cc,
t: time.NewTimer(0),
rn: make(chan struct{}, 1),
disableServiceConfig: opts.DisableServiceConfig,
}
d.wg.Add(1)
go d.watcher()
return d, nil
}
// Scheme returns the naming scheme of this resolver builder, which is "dns".
func (b *dnsBuilder) Scheme() string {
return "dns"
}
// ipResolver watches for the name resolution update for an IP address.
type ipResolver struct {
cc resolver.ClientConn
ip []resolver.Address
// rn channel is used by ResolveNow() to force an immediate resolution of the target.
rn chan struct{}
q chan struct{}
}
// ResolveNow resend the address it stores, no resolution is needed.
func (i *ipResolver) ResolveNow(opt resolver.ResolveNowOption) {
select {
case i.rn <- struct{}{}:
default:
}
}
// Close closes the ipResolver.
func (i *ipResolver) Close() {
close(i.q)
}
func (i *ipResolver) watcher() {
for {
select {
case <-i.rn:
i.cc.NewAddress(i.ip)
case <-i.q:
return
}
}
}
// dnsResolver watches for the name resolution update for a non-IP target.
type dnsResolver struct {
freq time.Duration
host string
port string
ctx context.Context
cancel context.CancelFunc
cc resolver.ClientConn
// rn channel is used by ResolveNow() to force an immediate resolution of the target.
rn chan struct{}
t *time.Timer
// 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.
func (d *dnsResolver) ResolveNow(opt resolver.ResolveNowOption) {
select {
case d.rn <- struct{}{}:
default:
}
}
// Close closes the dnsResolver.
func (d *dnsResolver) Close() {
d.cancel()
d.wg.Wait()
d.t.Stop()
}
func (d *dnsResolver) watcher() {
defer d.wg.Done()
for {
select {
case <-d.ctx.Done():
return
case <-d.t.C:
case <-d.rn:
}
result, sc := d.lookup()
// Next lookup should happen after an interval defined by d.freq.
d.t.Reset(d.freq)
d.cc.NewServiceConfig(sc)
d.cc.NewAddress(result)
}
}
func (d *dnsResolver) lookupSRV() []resolver.Address {
var newAddrs []resolver.Address
_, srvs, err := lookupSRV(d.ctx, "grpclb", "tcp", d.host)
if err != nil {
grpclog.Infof("grpc: failed dns SRV record lookup due to %v.\n", err)
return nil
}
for _, s := range srvs {
lbAddrs, err := lookupHost(d.ctx, s.Target)
if err != nil {
grpclog.Infof("grpc: failed load balancer address dns lookup due to %v.\n", err)
continue
}
for _, a := range lbAddrs {
a, ok := formatIP(a)
if !ok {
grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err)
continue
}
addr := a + ":" + strconv.Itoa(int(s.Port))
newAddrs = append(newAddrs, resolver.Address{Addr: addr, Type: resolver.GRPCLB, ServerName: s.Target})
}
}
return newAddrs
}
func (d *dnsResolver) lookupTXT() string {
ss, err := lookupTXT(d.ctx, d.host)
if err != nil {
grpclog.Infof("grpc: failed dns TXT record lookup due to %v.\n", err)
return ""
}
var res string
for _, s := range ss {
res += s
}
// TXT record must have "grpc_config=" attribute in order to be used as service config.
if !strings.HasPrefix(res, txtAttribute) {
grpclog.Warningf("grpc: TXT record %v missing %v attribute", res, txtAttribute)
return ""
}
return strings.TrimPrefix(res, txtAttribute)
}
func (d *dnsResolver) lookupHost() []resolver.Address {
var newAddrs []resolver.Address
addrs, err := lookupHost(d.ctx, d.host)
if err != nil {
grpclog.Warningf("grpc: failed dns A record lookup due to %v.\n", err)
return nil
}
for _, a := range addrs {
a, ok := formatIP(a)
if !ok {
grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err)
continue
}
addr := a + ":" + d.port
newAddrs = append(newAddrs, resolver.Address{Addr: addr})
}
return newAddrs
}
func (d *dnsResolver) lookup() ([]resolver.Address, string) {
newAddrs := d.lookupSRV()
// Support fallback to non-balancer address.
newAddrs = append(newAddrs, d.lookupHost()...)
if d.disableServiceConfig {
return newAddrs, ""
}
sc := d.lookupTXT()
return newAddrs, canaryingSC(sc)
}
// 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 {
return "", false
}
if ip.To4() != nil {
return addr, true
}
return "[" + addr + "]", true
}
// parseTarget takes the user input target string, 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 sqarue brackets, brackets
// are strippd when setting the host.
// examples:
// target: "www.google.com" returns host: "www.google.com", port: "443"
// target: "ipv4-host:80" returns host: "ipv4-host", port: "80"
// target: "[ipv6-host]" returns host: "ipv6-host", port: "443"
// target: ":80" returns host: "localhost", port: "80"
// target: ":" returns host: "localhost", port: "443"
func parseTarget(target string) (host, port string, err error) {
if target == "" {
return "", "", errMissingAddr
}
if ip := net.ParseIP(target); ip != nil {
// target is an IPv4 or IPv6(without brackets) address
return target, defaultPort, nil
}
if host, port, err = net.SplitHostPort(target); err == nil {
// 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.
host = "localhost"
}
if port == "" {
// If the port field is empty(target ends with colon), e.g. "[::1]:", defaultPort is used.
port = defaultPort
}
return host, port, nil
}
if host, port, err = net.SplitHostPort(target + ":" + defaultPort); err == nil {
// target doesn't have port
return host, port, nil
}
return "", "", fmt.Errorf("invalid target address %v, error info: %v", target, err)
}
type rawChoice struct {
ClientLanguage *[]string `json:"clientLanguage,omitempty"`
Percentage *int `json:"percentage,omitempty"`
ClientHostName *[]string `json:"clientHostName,omitempty"`
ServiceConfig *json.RawMessage `json:"serviceConfig,omitempty"`
}
func containsString(a *[]string, b string) bool {
if a == nil {
return true
}
for _, c := range *a {
if c == b {
return true
}
}
return false
}
func chosenByPercentage(a *int) bool {
if a == nil {
return true
}
return grpcrand.Intn(100)+1 <= *a
}
func canaryingSC(js string) string {
if js == "" {
return ""
}
var rcs []rawChoice
err := json.Unmarshal([]byte(js), &rcs)
if err != nil {
grpclog.Warningf("grpc: failed to parse service config json string due to %v.\n", err)
return ""
}
cliHostname, err := os.Hostname()
if err != nil {
grpclog.Warningf("grpc: failed to get client hostname due to %v.\n", err)
return ""
}
var sc string
for _, c := range rcs {
if !containsString(c.ClientLanguage, golang) ||
!chosenByPercentage(c.Percentage) ||
!containsString(c.ClientHostName, cliHostname) ||
c.ServiceConfig == nil {
continue
}
sc = string(*c.ServiceConfig)
break
}
return sc
}

35
vendor/google.golang.org/grpc/resolver/dns/go17.go generated vendored Normal file
View File

@@ -0,0 +1,35 @@
// +build go1.6, !go1.8
/*
*
* Copyright 2017 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 dns
import (
"net"
"golang.org/x/net/context"
)
var (
lookupHost = func(ctx context.Context, host string) ([]string, error) { return net.LookupHost(host) }
lookupSRV = func(ctx context.Context, service, proto, name string) (string, []*net.SRV, error) {
return net.LookupSRV(service, proto, name)
}
lookupTXT = func(ctx context.Context, name string) ([]string, error) { return net.LookupTXT(name) }
)

29
vendor/google.golang.org/grpc/resolver/dns/go18.go generated vendored Normal file
View File

@@ -0,0 +1,29 @@
// +build go1.8
/*
*
* Copyright 2017 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 dns
import "net"
var (
lookupHost = net.DefaultResolver.LookupHost
lookupSRV = net.DefaultResolver.LookupSRV
lookupTXT = net.DefaultResolver.LookupTXT
)

24
vendor/google.golang.org/grpc/resolver/passthrough/BUILD generated vendored Normal file
View File

@@ -0,0 +1,24 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["passthrough.go"],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/resolver/passthrough",
importpath = "google.golang.org/grpc/resolver/passthrough",
visibility = ["//visibility:public"],
deps = ["//vendor/google.golang.org/grpc/resolver:go_default_library"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

57
vendor/google.golang.org/grpc/resolver/passthrough/passthrough.go generated vendored Normal file
View File

@@ -0,0 +1,57 @@
/*
*
* Copyright 2017 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 passthrough implements a pass-through resolver. It sends the target
// name without scheme back to gRPC as resolved address.
package passthrough
import "google.golang.org/grpc/resolver"
const scheme = "passthrough"
type passthroughBuilder struct{}
func (*passthroughBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOption) (resolver.Resolver, error) {
r := &passthroughResolver{
target: target,
cc: cc,
}
r.start()
return r, nil
}
func (*passthroughBuilder) Scheme() string {
return scheme
}
type passthroughResolver struct {
target resolver.Target
cc resolver.ClientConn
}
func (r *passthroughResolver) start() {
r.cc.NewAddress([]resolver.Address{{Addr: r.target.Endpoint}})
}
func (*passthroughResolver) ResolveNow(o resolver.ResolveNowOption) {}
func (*passthroughResolver) Close() {}
func init() {
resolver.Register(&passthroughBuilder{})
}

47
vendor/google.golang.org/grpc/resolver/resolver.go generated vendored
View File

@@ -24,42 +24,42 @@ var (
// m is a map from scheme to resolver builder.
m = make(map[string]Builder)
// defaultScheme is the default scheme to use.
defaultScheme string
defaultScheme = "passthrough"
)
// 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.
//
// 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
// registered with the same name, the one registered last will take effect.
func Register(b Builder) {
m[b.Scheme()] = b
}
// Get returns the resolver builder registered with the given scheme.
// If no builder is register with the scheme, the default scheme will
// be used.
// If the default scheme is not modified, "dns" will be the default
// scheme, and the preinstalled dns resolver will be used.
// If the default scheme is modified, and a resolver is registered with
// the scheme, that resolver will be returned.
// If the default scheme is modified, and no resolver is registered with
// the scheme, nil will be returned.
//
// If no builder is register with the scheme, nil will be returned.
func Get(scheme string) Builder {
if b, ok := m[scheme]; ok {
return b
}
if b, ok := m[defaultScheme]; ok {
return b
}
return nil
}
// SetDefaultScheme sets the default scheme that will be used.
// The default default scheme is "dns".
// The default default scheme is "passthrough".
func SetDefaultScheme(scheme string) {
defaultScheme = scheme
}
// GetDefaultScheme gets the default scheme that will be used.
func GetDefaultScheme() string {
return defaultScheme
}
// AddressType indicates the address type returned by name resolution.
type AddressType uint8
@@ -78,7 +78,9 @@ type Address struct {
// Type is the type of this address.
Type AddressType
// ServerName is the name of this address.
// It's the name of the grpc load balancer, which will be used for authentication.
//
// e.g. if Type is GRPCLB, ServerName should be the name of the remote load
// balancer, not the name of the backend.
ServerName string
// Metadata is the information associated with Addr, which may be used
// to make load balancing decision.
@@ -88,10 +90,17 @@ type Address struct {
// BuildOption includes additional information for the builder to create
// the resolver.
type BuildOption struct {
// DisableServiceConfig indicates whether resolver should fetch service config data.
DisableServiceConfig bool
}
// ClientConn contains the callbacks for resolver to notify any updates
// to the gRPC ClientConn.
//
// 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.
type ClientConn interface {
// NewAddress is called by resolver to notify ClientConn a new list
// of resolved addresses.
@@ -128,8 +137,10 @@ type ResolveNowOption struct{}
// Resolver watches for the updates on the specified target.
// Updates include address updates and service config updates.
type Resolver interface {
// ResolveNow will be called by gRPC to try to resolve the target name again.
// It's just a hint, resolver can ignore this if it's not necessary.
// ResolveNow will be called by gRPC to try to resolve the target name
// again. It's just a hint, resolver can ignore this if it's not necessary.
//
// It could be called multiple times concurrently.
ResolveNow(ResolveNowOption)
// Close closes the resolver.
Close()

73
vendor/google.golang.org/grpc/resolver_conn_wrapper.go generated vendored
View File

@@ -19,6 +19,7 @@
package grpc
import (
"fmt"
"strings"
"google.golang.org/grpc/grpclog"
@@ -36,39 +37,43 @@ type ccResolverWrapper struct {
}
// split2 returns the values from strings.SplitN(s, sep, 2).
// If sep is not found, it returns "", s instead.
func split2(s, sep string) (string, string) {
// If sep is not found, it returns ("", s, false) instead.
func split2(s, sep string) (string, string, bool) {
spl := strings.SplitN(s, sep, 2)
if len(spl) < 2 {
return "", s
return "", "", false
}
return spl[0], spl[1]
return spl[0], spl[1], true
}
// parseTarget splits target into a struct containing scheme, authority and
// endpoint.
//
// If target is not a valid scheme://authority/endpoint, it returns {Endpoint:
// target}.
func parseTarget(target string) (ret resolver.Target) {
ret.Scheme, ret.Endpoint = split2(target, "://")
ret.Authority, ret.Endpoint = split2(ret.Endpoint, "/")
var ok bool
ret.Scheme, ret.Endpoint, ok = split2(target, "://")
if !ok {
return resolver.Target{Endpoint: target}
}
ret.Authority, ret.Endpoint, ok = split2(ret.Endpoint, "/")
if !ok {
return resolver.Target{Endpoint: target}
}
return ret
}
// newCCResolverWrapper parses cc.target for scheme and gets the resolver
// builder for this scheme. It then builds the resolver and starts the
// monitoring goroutine for it.
// builder for this scheme and builds the resolver. The monitoring goroutine
// for it is not started yet and can be created by calling start().
//
// This function could return nil, nil, in tests for old behaviors.
// TODO(bar) never return nil, nil when DNS becomes the default resolver.
// If withResolverBuilder dial option is set, the specified resolver will be
// used instead.
func newCCResolverWrapper(cc *ClientConn) (*ccResolverWrapper, error) {
target := parseTarget(cc.target)
grpclog.Infof("dialing to target with scheme: %q", target.Scheme)
rb := resolver.Get(target.Scheme)
rb := cc.dopts.resolverBuilder
if rb == nil {
// TODO(bar) return error when DNS becomes the default (implemented and
// registered by DNS package).
grpclog.Infof("could not get resolver for scheme: %q", target.Scheme)
return nil, nil
return nil, fmt.Errorf("could not get resolver for scheme: %q", cc.parsedTarget.Scheme)
}
ccr := &ccResolverWrapper{
@@ -79,15 +84,18 @@ func newCCResolverWrapper(cc *ClientConn) (*ccResolverWrapper, error) {
}
var err error
ccr.resolver, err = rb.Build(target, ccr, resolver.BuildOption{})
ccr.resolver, err = rb.Build(cc.parsedTarget, ccr, resolver.BuildOption{DisableServiceConfig: cc.dopts.disableServiceConfig})
if err != nil {
return nil, err
}
go ccr.watcher()
return ccr, nil
}
// watcher processes address updates and service config updates sequencially.
func (ccr *ccResolverWrapper) start() {
go ccr.watcher()
}
// watcher processes address updates and service config updates sequentially.
// Otherwise, we need to resolve possible races between address and service
// config (e.g. they specify different balancer types).
func (ccr *ccResolverWrapper) watcher() {
@@ -100,20 +108,31 @@ func (ccr *ccResolverWrapper) watcher() {
select {
case addrs := <-ccr.addrCh:
grpclog.Infof("ccResolverWrapper: sending new addresses to balancer wrapper: %v", addrs)
// TODO(bar switching) this should never be nil. Pickfirst should be default.
if ccr.cc.balancerWrapper != nil {
// TODO(bar switching) create balancer if it's nil?
ccr.cc.balancerWrapper.handleResolvedAddrs(addrs, nil)
select {
case <-ccr.done:
return
default:
}
grpclog.Infof("ccResolverWrapper: sending new addresses to cc: %v", addrs)
ccr.cc.handleResolvedAddrs(addrs, nil)
case sc := <-ccr.scCh:
select {
case <-ccr.done:
return
default:
}
grpclog.Infof("ccResolverWrapper: got new service config: %v", sc)
ccr.cc.handleServiceConfig(sc)
case <-ccr.done:
return
}
}
}
func (ccr *ccResolverWrapper) resolveNow(o resolver.ResolveNowOption) {
ccr.resolver.ResolveNow(o)
}
func (ccr *ccResolverWrapper) close() {
ccr.resolver.Close()
close(ccr.done)
@@ -129,7 +148,7 @@ func (ccr *ccResolverWrapper) NewAddress(addrs []resolver.Address) {
}
// NewServiceConfig is called by the resolver implemenetion to send service
// configs to gPRC.
// configs to gRPC.
func (ccr *ccResolverWrapper) NewServiceConfig(sc string) {
select {
case <-ccr.scCh:

653
vendor/google.golang.org/grpc/rpc_util.go generated vendored
View File

@@ -21,18 +21,21 @@ package grpc
import (
"bytes"
"compress/gzip"
stdctx "context"
"encoding/binary"
"fmt"
"io"
"io/ioutil"
"math"
"os"
"net/url"
"strings"
"sync"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/encoding"
"google.golang.org/grpc/encoding/proto"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/peer"
"google.golang.org/grpc/stats"
@@ -41,6 +44,8 @@ import (
)
// Compressor defines the interface gRPC uses to compress a message.
//
// Deprecated: use package encoding.
type Compressor interface {
// Do compresses p into w.
Do(w io.Writer, p []byte) error
@@ -53,14 +58,34 @@ type gzipCompressor struct {
}
// NewGZIPCompressor creates a Compressor based on GZIP.
//
// Deprecated: use package encoding/gzip.
func NewGZIPCompressor() Compressor {
c, _ := NewGZIPCompressorWithLevel(gzip.DefaultCompression)
return c
}
// NewGZIPCompressorWithLevel is like NewGZIPCompressor but specifies the gzip compression level instead
// of assuming DefaultCompression.
//
// The error returned will be nil if the level is valid.
//
// Deprecated: use package encoding/gzip.
func NewGZIPCompressorWithLevel(level int) (Compressor, error) {
if level < gzip.DefaultCompression || level > gzip.BestCompression {
return nil, fmt.Errorf("grpc: invalid compression level: %d", level)
}
return &gzipCompressor{
pool: sync.Pool{
New: func() interface{} {
return gzip.NewWriter(ioutil.Discard)
},
},
w, err := gzip.NewWriterLevel(ioutil.Discard, level)
if err != nil {
panic(err)
}
return w
},
},
}, nil
}
func (c *gzipCompressor) Do(w io.Writer, p []byte) error {
@@ -78,6 +103,8 @@ func (c *gzipCompressor) Type() string {
}
// Decompressor defines the interface gRPC uses to decompress a message.
//
// Deprecated: use package encoding.
type Decompressor interface {
// Do reads the data from r and uncompress them.
Do(r io.Reader) ([]byte, error)
@@ -90,6 +117,8 @@ type gzipDecompressor struct {
}
// NewGZIPDecompressor creates a Decompressor based on GZIP.
//
// Deprecated: use package encoding/gzip.
func NewGZIPDecompressor() Decompressor {
return &gzipDecompressor{}
}
@@ -124,14 +153,15 @@ func (d *gzipDecompressor) Type() string {
// callInfo contains all related configuration and information about an RPC.
type callInfo struct {
compressorType string
failFast bool
headerMD metadata.MD
trailerMD metadata.MD
peer *peer.Peer
stream *clientStream
traceInfo traceInfo // in trace.go
maxReceiveMessageSize *int
maxSendMessageSize *int
creds credentials.PerRPCCredentials
contentSubtype string
codec baseCodec
}
func defaultCallInfo() *callInfo {
@@ -158,87 +188,239 @@ type EmptyCallOption struct{}
func (EmptyCallOption) before(*callInfo) error { return nil }
func (EmptyCallOption) after(*callInfo) {}
type beforeCall func(c *callInfo) error
func (o beforeCall) before(c *callInfo) error { return o(c) }
func (o beforeCall) after(c *callInfo) {}
type afterCall func(c *callInfo)
func (o afterCall) before(c *callInfo) error { return nil }
func (o afterCall) after(c *callInfo) { o(c) }
// Header returns a CallOptions that retrieves the header metadata
// for a unary RPC.
func Header(md *metadata.MD) CallOption {
return afterCall(func(c *callInfo) {
*md = c.headerMD
})
return HeaderCallOption{HeaderAddr: md}
}
// HeaderCallOption is a CallOption for collecting response header metadata.
// The metadata field will be populated *after* the RPC completes.
// This is an EXPERIMENTAL API.
type HeaderCallOption struct {
HeaderAddr *metadata.MD
}
func (o HeaderCallOption) before(c *callInfo) error { return nil }
func (o HeaderCallOption) after(c *callInfo) {
if c.stream != nil {
*o.HeaderAddr, _ = c.stream.Header()
}
}
// Trailer returns a CallOptions that retrieves the trailer metadata
// for a unary RPC.
func Trailer(md *metadata.MD) CallOption {
return afterCall(func(c *callInfo) {
*md = c.trailerMD
})
return TrailerCallOption{TrailerAddr: md}
}
// Peer returns a CallOption that retrieves peer information for a
// unary RPC.
func Peer(peer *peer.Peer) CallOption {
return afterCall(func(c *callInfo) {
if c.peer != nil {
*peer = *c.peer
// TrailerCallOption is a CallOption for collecting response trailer metadata.
// The metadata field will be populated *after* the RPC completes.
// This is an EXPERIMENTAL API.
type TrailerCallOption struct {
TrailerAddr *metadata.MD
}
func (o TrailerCallOption) before(c *callInfo) error { return nil }
func (o TrailerCallOption) after(c *callInfo) {
if c.stream != nil {
*o.TrailerAddr = c.stream.Trailer()
}
}
// Peer returns a CallOption that retrieves peer information for a unary RPC.
// The peer field will be populated *after* the RPC completes.
func Peer(p *peer.Peer) CallOption {
return PeerCallOption{PeerAddr: p}
}
// PeerCallOption is a CallOption for collecting the identity of the remote
// peer. The peer field will be populated *after* the RPC completes.
// This is an EXPERIMENTAL API.
type PeerCallOption struct {
PeerAddr *peer.Peer
}
func (o PeerCallOption) before(c *callInfo) error { return nil }
func (o PeerCallOption) after(c *callInfo) {
if c.stream != nil {
if x, ok := peer.FromContext(c.stream.Context()); ok {
*o.PeerAddr = *x
}
}
})
}
// FailFast configures the action to take when an RPC is attempted on broken
// connections or unreachable servers. If failfast is true, the RPC will fail
// connections or unreachable servers. If failFast is true, 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. Please refer to
// 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
// data was written to the wire unless the server indicates it did not process
// the data. Please refer to
// https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md.
// Note: failFast is default to true.
//
// By default, RPCs are "Fail Fast".
func FailFast(failFast bool) CallOption {
return beforeCall(func(c *callInfo) error {
c.failFast = failFast
return nil
})
return FailFastCallOption{FailFast: failFast}
}
// FailFastCallOption is a CallOption for indicating whether an RPC should fail
// fast or not.
// This is an EXPERIMENTAL API.
type FailFastCallOption struct {
FailFast bool
}
func (o FailFastCallOption) before(c *callInfo) error {
c.failFast = o.FailFast
return nil
}
func (o FailFastCallOption) after(c *callInfo) {}
// MaxCallRecvMsgSize returns a CallOption which sets the maximum message size the client can receive.
func MaxCallRecvMsgSize(s int) CallOption {
return beforeCall(func(o *callInfo) error {
o.maxReceiveMessageSize = &s
return nil
})
return MaxRecvMsgSizeCallOption{MaxRecvMsgSize: s}
}
// MaxRecvMsgSizeCallOption is a CallOption that indicates the maximum message
// size the client can receive.
// This is an EXPERIMENTAL API.
type MaxRecvMsgSizeCallOption struct {
MaxRecvMsgSize int
}
func (o MaxRecvMsgSizeCallOption) before(c *callInfo) error {
c.maxReceiveMessageSize = &o.MaxRecvMsgSize
return nil
}
func (o MaxRecvMsgSizeCallOption) after(c *callInfo) {}
// MaxCallSendMsgSize returns a CallOption which sets the maximum message size the client can send.
func MaxCallSendMsgSize(s int) CallOption {
return beforeCall(func(o *callInfo) error {
o.maxSendMessageSize = &s
return nil
})
return MaxSendMsgSizeCallOption{MaxSendMsgSize: s}
}
// MaxSendMsgSizeCallOption is a CallOption that indicates the maximum message
// size the client can send.
// This is an EXPERIMENTAL API.
type MaxSendMsgSizeCallOption struct {
MaxSendMsgSize int
}
func (o MaxSendMsgSizeCallOption) before(c *callInfo) error {
c.maxSendMessageSize = &o.MaxSendMsgSize
return nil
}
func (o MaxSendMsgSizeCallOption) after(c *callInfo) {}
// PerRPCCredentials returns a CallOption that sets credentials.PerRPCCredentials
// for a call.
func PerRPCCredentials(creds credentials.PerRPCCredentials) CallOption {
return beforeCall(func(c *callInfo) error {
c.creds = creds
return nil
})
return PerRPCCredsCallOption{Creds: creds}
}
// PerRPCCredsCallOption is a CallOption that indicates the per-RPC
// credentials to use for the call.
// This is an EXPERIMENTAL API.
type PerRPCCredsCallOption struct {
Creds credentials.PerRPCCredentials
}
func (o PerRPCCredsCallOption) before(c *callInfo) error {
c.creds = o.Creds
return nil
}
func (o PerRPCCredsCallOption) after(c *callInfo) {}
// UseCompressor returns a CallOption which sets the compressor used when
// sending the request. If WithCompressor is also set, UseCompressor has
// higher priority.
//
// This API is EXPERIMENTAL.
func UseCompressor(name string) CallOption {
return CompressorCallOption{CompressorType: name}
}
// CompressorCallOption is a CallOption that indicates the compressor to use.
// This is an EXPERIMENTAL API.
type CompressorCallOption struct {
CompressorType string
}
func (o CompressorCallOption) before(c *callInfo) error {
c.compressorType = o.CompressorType
return nil
}
func (o CompressorCallOption) after(c *callInfo) {}
// CallContentSubtype returns a CallOption that will set the content-subtype
// for a call. For example, if content-subtype is "json", the Content-Type over
// the wire will be "application/grpc+json". The content-subtype is converted
// to lowercase before being included in Content-Type. See Content-Type on
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
// more details.
//
// If CallCustomCodec is not also used, the content-subtype will be used to
// look up the Codec to use in the registry controlled by RegisterCodec. See
// the documentation on RegisterCodec for details on registration. The lookup
// of content-subtype is case-insensitive. If no such Codec is found, the call
// will result in an error with code codes.Internal.
//
// If CallCustomCodec is also used, that Codec will be used for all request and
// response messages, with the content-subtype set to the given contentSubtype
// here for requests.
func CallContentSubtype(contentSubtype string) CallOption {
return ContentSubtypeCallOption{ContentSubtype: strings.ToLower(contentSubtype)}
}
// ContentSubtypeCallOption is a CallOption that indicates the content-subtype
// used for marshaling messages.
// This is an EXPERIMENTAL API.
type ContentSubtypeCallOption struct {
ContentSubtype string
}
func (o ContentSubtypeCallOption) before(c *callInfo) error {
c.contentSubtype = o.ContentSubtype
return nil
}
func (o ContentSubtypeCallOption) after(c *callInfo) {}
// CallCustomCodec returns a CallOption that will set the given Codec to be
// used for all request and response messages for a call. The result of calling
// String() will be used as the content-subtype in a case-insensitive manner.
//
// See Content-Type on
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
// more details. Also see the documentation on RegisterCodec and
// CallContentSubtype for more details on the interaction between Codec and
// content-subtype.
//
// This function is provided for advanced users; prefer to use only
// CallContentSubtype to select a registered codec instead.
func CallCustomCodec(codec Codec) CallOption {
return CustomCodecCallOption{Codec: codec}
}
// CustomCodecCallOption is a CallOption that indicates the codec used for
// marshaling messages.
// This is an EXPERIMENTAL API.
type CustomCodecCallOption struct {
Codec Codec
}
func (o CustomCodecCallOption) before(c *callInfo) error {
c.codec = o.Codec
return nil
}
func (o CustomCodecCallOption) after(c *callInfo) {}
// The format of the payload: compressed or not?
type payloadFormat uint8
const (
compressionNone payloadFormat = iota // no compression
compressionMade
compressionNone payloadFormat = 0 // no compression
compressionMade payloadFormat = 1 // compressed
)
// parser reads complete gRPC messages from the underlying reader.
@@ -248,8 +430,8 @@ type parser struct {
// error types.
r io.Reader
// The header of a gRPC message. Find more detail
// at https://grpc.io/docs/guides/wire.html.
// The header of a gRPC message. Find more detail at
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
header [5]byte
}
@@ -277,8 +459,11 @@ func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byt
if length == 0 {
return pf, nil, nil
}
if length > uint32(maxReceiveMessageSize) {
return 0, nil, Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", length, maxReceiveMessageSize)
if int64(length) > int64(maxInt) {
return 0, nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max length allowed on current machine (%d vs. %d)", length, maxInt)
}
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:
@@ -292,67 +477,104 @@ func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byt
return pf, msg, nil
}
// encode serializes msg and returns a buffer of message header and a buffer of msg.
// If msg is nil, it generates the message header and an empty msg buffer.
func encode(c Codec, msg interface{}, cp Compressor, cbuf *bytes.Buffer, outPayload *stats.OutPayload) ([]byte, []byte, error) {
var b []byte
const (
payloadLen = 1
sizeLen = 4
)
if msg != nil {
var err error
b, err = c.Marshal(msg)
// encode serializes msg and returns a buffer containing the message, or an
// error if it is too large to be transmitted by grpc. If msg is nil, it
// generates an empty message.
func encode(c baseCodec, msg interface{}) ([]byte, error) {
if msg == nil { // NOTE: typed nils will not be caught by this check
return nil, nil
}
b, err := c.Marshal(msg)
if err != nil {
return nil, nil, Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error())
return nil, status.Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error())
}
if outPayload != nil {
outPayload.Payload = msg
// TODO truncate large payload.
outPayload.Data = b
outPayload.Length = len(b)
}
if cp != nil {
if err := cp.Do(cbuf, b); err != nil {
return nil, nil, Errorf(codes.Internal, "grpc: error while compressing: %v", err.Error())
}
b = cbuf.Bytes()
}
}
if uint(len(b)) > math.MaxUint32 {
return nil, nil, Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", len(b))
return nil, status.Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", len(b))
}
bufHeader := make([]byte, payloadLen+sizeLen)
if cp == nil {
bufHeader[0] = byte(compressionNone)
} else {
bufHeader[0] = byte(compressionMade)
}
// Write length of b into buf
binary.BigEndian.PutUint32(bufHeader[payloadLen:], uint32(len(b)))
if outPayload != nil {
outPayload.WireLength = payloadLen + sizeLen + len(b)
}
return bufHeader, b, nil
return b, nil
}
func checkRecvPayload(pf payloadFormat, recvCompress string, dc Decompressor) error {
// compress returns the input bytes compressed by compressor or cp. If both
// compressors are nil, returns nil.
//
// TODO(dfawley): eliminate cp parameter by wrapping Compressor in an encoding.Compressor.
func compress(in []byte, cp Compressor, compressor encoding.Compressor) ([]byte, error) {
if compressor == nil && cp == nil {
return nil, nil
}
wrapErr := func(err error) error {
return status.Errorf(codes.Internal, "grpc: error while compressing: %v", err.Error())
}
cbuf := &bytes.Buffer{}
if compressor != nil {
z, _ := compressor.Compress(cbuf)
if _, err := z.Write(in); err != nil {
return nil, wrapErr(err)
}
if err := z.Close(); err != nil {
return nil, wrapErr(err)
}
} else {
if err := cp.Do(cbuf, in); err != nil {
return nil, wrapErr(err)
}
}
return cbuf.Bytes(), nil
}
const (
payloadLen = 1
sizeLen = 4
headerLen = payloadLen + sizeLen
)
// msgHeader returns a 5-byte header for the message being transmitted and the
// payload, which is compData if non-nil or data otherwise.
func msgHeader(data, compData []byte) (hdr []byte, payload []byte) {
hdr = make([]byte, headerLen)
if compData != nil {
hdr[0] = byte(compressionMade)
data = compData
} else {
hdr[0] = byte(compressionNone)
}
// Write length of payload into buf
binary.BigEndian.PutUint32(hdr[payloadLen:], uint32(len(data)))
return hdr, data
}
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,
}
}
func checkRecvPayload(pf payloadFormat, recvCompress string, haveCompressor bool) *status.Status {
switch pf {
case compressionNone:
case compressionMade:
if dc == nil || recvCompress != dc.Type() {
return Errorf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", recvCompress)
if recvCompress == "" || recvCompress == encoding.Identity {
return status.New(codes.Internal, "grpc: compressed flag set with identity or empty encoding")
}
if !haveCompressor {
return status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", recvCompress)
}
default:
return Errorf(codes.Internal, "grpc: received unexpected payload format %d", pf)
return status.Newf(codes.Internal, "grpc: received unexpected payload format %d", pf)
}
return nil
}
func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{}, maxReceiveMessageSize int, inPayload *stats.InPayload) error {
// For the two compressor parameters, both should not be set, but if they are,
// 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, inPayload *stats.InPayload, compressor encoding.Compressor) error {
pf, d, err := p.recvMsg(maxReceiveMessageSize)
if err != nil {
return err
@@ -360,22 +582,37 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{
if inPayload != nil {
inPayload.WireLength = len(d)
}
if err := checkRecvPayload(pf, s.RecvCompress(), dc); err != nil {
return err
if st := checkRecvPayload(pf, s.RecvCompress(), compressor != nil || dc != nil); st != nil {
return st.Err()
}
if pf == compressionMade {
// 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))
if err != nil {
return Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
}
} else {
dcReader, err := compressor.Decompress(bytes.NewReader(d))
if err != nil {
return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
}
d, err = ioutil.ReadAll(dcReader)
if err != nil {
return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
}
}
}
if len(d) > maxReceiveMessageSize {
// TODO: Revisit the error code. Currently keep it consistent with java
// implementation.
return Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(d), maxReceiveMessageSize)
return status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(d), maxReceiveMessageSize)
}
if err := c.Unmarshal(d, m); err != nil {
return Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err)
return status.Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err)
}
if inPayload != nil {
inPayload.RecvTime = time.Now()
@@ -389,8 +626,6 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{
type rpcInfo struct {
failfast bool
bytesSent bool
bytesReceived bool
}
type rpcInfoContextKey struct{}
@@ -404,69 +639,10 @@ func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) {
return
}
func updateRPCInfoInContext(ctx context.Context, s rpcInfo) {
if ss, ok := rpcInfoFromContext(ctx); ok {
ss.bytesReceived = s.bytesReceived
ss.bytesSent = s.bytesSent
}
return
}
// toRPCErr converts an error into an error from the status package.
func toRPCErr(err error) error {
if _, ok := status.FromError(err); ok {
return err
}
switch e := err.(type) {
case transport.StreamError:
return status.Error(e.Code, e.Desc)
case transport.ConnectionError:
return status.Error(codes.Unavailable, e.Desc)
default:
switch err {
case context.DeadlineExceeded, stdctx.DeadlineExceeded:
return status.Error(codes.DeadlineExceeded, err.Error())
case context.Canceled, stdctx.Canceled:
return status.Error(codes.Canceled, err.Error())
case ErrClientConnClosing:
return status.Error(codes.FailedPrecondition, err.Error())
}
}
return status.Error(codes.Unknown, err.Error())
}
// convertCode converts a standard Go error into its canonical code. Note that
// this is only used to translate the error returned by the server applications.
func convertCode(err error) codes.Code {
switch err {
case nil:
return codes.OK
case io.EOF:
return codes.OutOfRange
case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF:
return codes.FailedPrecondition
case os.ErrInvalid:
return codes.InvalidArgument
case context.Canceled, stdctx.Canceled:
return codes.Canceled
case context.DeadlineExceeded, stdctx.DeadlineExceeded:
return codes.DeadlineExceeded
}
switch {
case os.IsExist(err):
return codes.AlreadyExists
case os.IsNotExist(err):
return codes.NotFound
case os.IsPermission(err):
return codes.PermissionDenied
}
return codes.Unknown
}
// Code returns the error code for err if it was produced by the rpc system.
// Otherwise, it returns codes.Unknown.
//
// Deprecated; use status.FromError and Code method instead.
// Deprecated: use status.FromError and Code method instead.
func Code(err error) codes.Code {
if s, ok := status.FromError(err); ok {
return s.Code()
@@ -477,7 +653,7 @@ func Code(err error) codes.Code {
// ErrorDesc returns the error description of err if it was produced by the rpc system.
// Otherwise, it returns err.Error() or empty string when err is nil.
//
// Deprecated; use status.FromError and Message method instead.
// Deprecated: use status.FromError and Message method instead.
func ErrorDesc(err error) string {
if s, ok := status.FromError(err); ok {
return s.Message()
@@ -488,85 +664,78 @@ func ErrorDesc(err error) string {
// Errorf returns an error containing an error code and a description;
// Errorf returns nil if c is OK.
//
// Deprecated; use status.Errorf instead.
// Deprecated: use status.Errorf instead.
func Errorf(c codes.Code, format string, a ...interface{}) error {
return status.Errorf(c, format, a...)
}
// MethodConfig defines the configuration recommended by the service providers for a
// particular method.
// This is EXPERIMENTAL and subject to change.
type MethodConfig struct {
// WaitForReady indicates whether RPCs sent to this method should wait until
// the connection is ready by default (!failfast). The value specified via the
// gRPC client API will override the value set here.
WaitForReady *bool
// Timeout is the default timeout for RPCs sent to this method. The actual
// deadline used will be the minimum of the value specified here and the value
// set by the application via the gRPC client API. If either one is not set,
// then the other will be used. If neither is set, then the RPC has no deadline.
Timeout *time.Duration
// MaxReqSize is the maximum allowed payload size for an individual request in a
// stream (client->server) in bytes. The size which is measured is the serialized
// payload after per-message compression (but before stream compression) in bytes.
// The actual value used is the minimum of the value specified here and the value set
// by the application via the gRPC client API. If either one is not set, then the other
// will be used. If neither is set, then the built-in default is used.
MaxReqSize *int
// MaxRespSize is the maximum allowed payload size for an individual response in a
// stream (server->client) in bytes.
MaxRespSize *int
// setCallInfoCodec should only be called after CallOptions have been applied.
func setCallInfoCodec(c *callInfo) error {
if c.codec != nil {
// codec was already set by a CallOption; use it.
return nil
}
if c.contentSubtype == "" {
// No codec specified in CallOptions; use proto by default.
c.codec = encoding.GetCodec(proto.Name)
return nil
}
// c.contentSubtype is already lowercased in CallContentSubtype
c.codec = encoding.GetCodec(c.contentSubtype)
if c.codec == nil {
return status.Errorf(codes.Internal, "no codec registered for content-subtype %s", c.contentSubtype)
}
return nil
}
// ServiceConfig is provided by the service provider and contains parameters for how
// clients that connect to the service should behave.
// This is EXPERIMENTAL and subject to change.
type ServiceConfig struct {
// LB is the load balancer the service providers recommends. The balancer specified
// via grpc.WithBalancer will override this.
LB Balancer
// Methods contains a map for the methods in this service.
// If there is an exact match for a method (i.e. /service/method) in the map, use the corresponding MethodConfig.
// If there's no exact match, look for the default config for the service (/service/) and use the corresponding MethodConfig if it exists.
// Otherwise, the method has no MethodConfig to use.
Methods map[string]MethodConfig
// parseDialTarget returns the network and address to pass to dialer
func parseDialTarget(target string) (net string, addr string) {
net = "tcp"
m1 := strings.Index(target, ":")
m2 := strings.Index(target, ":/")
// handle unix:addr which will fail with url.Parse
if m1 >= 0 && m2 < 0 {
if n := target[0:m1]; n == "unix" {
net = n
addr = target[m1+1:]
return net, addr
}
}
if m2 >= 0 {
t, err := url.Parse(target)
if err != nil {
return net, target
}
scheme := t.Scheme
addr = t.Path
if scheme == "unix" {
net = scheme
if addr == "" {
addr = t.Host
}
return net, addr
}
}
return net, target
}
func min(a, b *int) *int {
if *a < *b {
return a
}
return b
}
func getMaxSize(mcMax, doptMax *int, defaultVal int) *int {
if mcMax == nil && doptMax == nil {
return &defaultVal
}
if mcMax != nil && doptMax != nil {
return min(mcMax, doptMax)
}
if mcMax != nil {
return mcMax
}
return doptMax
}
// SupportPackageIsVersion3 is referenced from generated protocol buffer files.
// The latest support package version is 4.
// SupportPackageIsVersion3 is kept for compatibility. It will be removed in the
// next support package version update.
const SupportPackageIsVersion3 = true
// SupportPackageIsVersion4 is referenced from generated protocol buffer files
// to assert that that code is compatible with this version of the grpc package.
// The SupportPackageIsVersion variables are referenced from generated protocol
// buffer files to ensure compatibility with the gRPC version used. The latest
// support package version is 5.
//
// This constant may be renamed in the future if a change in the generated code
// requires a synchronised update of grpc-go and protoc-gen-go. This constant
// should not be referenced from any other code.
const SupportPackageIsVersion4 = true
// Version is the current grpc version.
const Version = "1.7.5"
// Older versions are kept for compatibility. They may be removed if
// compatibility cannot be maintained.
//
// These constants should not be referenced from any other code.
const (
SupportPackageIsVersion3 = true
SupportPackageIsVersion4 = true
SupportPackageIsVersion5 = true
)
const grpcUA = "grpc-go/" + Version

538
vendor/google.golang.org/grpc/server.go generated vendored
View File

@@ -32,13 +32,19 @@ import (
"sync"
"time"
"io/ioutil"
"golang.org/x/net/context"
"golang.org/x/net/http2"
"golang.org/x/net/trace"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"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/channelz"
"google.golang.org/grpc/keepalive"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/stats"
@@ -89,18 +95,28 @@ type Server struct {
conns map[io.Closer]bool
serve bool
drain bool
ctx context.Context
cancel context.CancelFunc
// A CondVar to let GracefulStop() blocks until all the pending RPCs are finished
// and all the transport goes away.
cv *sync.Cond
cv *sync.Cond // signaled when connections close for GracefulStop
m map[string]*service // service name -> service info
events trace.EventLog
quit chan struct{}
done chan struct{}
quitOnce sync.Once
doneOnce sync.Once
channelzRemoveOnce sync.Once
serveWG sync.WaitGroup // counts active Serve goroutines for GracefulStop
channelzID int64 // channelz unique identification number
czmu sync.RWMutex
callsStarted int64
callsFailed int64
callsSucceeded int64
lastCallStartedTime time.Time
}
type options struct {
creds credentials.TransportCredentials
codec Codec
codec baseCodec
cp Compressor
dc Decompressor
unaryInt UnaryServerInterceptor
@@ -177,20 +193,32 @@ func KeepaliveEnforcementPolicy(kep keepalive.EnforcementPolicy) ServerOption {
}
// CustomCodec returns a ServerOption that sets a codec for message marshaling and unmarshaling.
//
// This will override any lookups by content-subtype for Codecs registered with RegisterCodec.
func CustomCodec(codec Codec) ServerOption {
return func(o *options) {
o.codec = codec
}
}
// RPCCompressor returns a ServerOption that sets a compressor for outbound messages.
// RPCCompressor returns a ServerOption that sets a compressor for outbound
// messages. For backward compatibility, all outbound messages will be sent
// using this compressor, regardless of incoming message compression. By
// default, server messages will be sent using the same compressor with which
// request messages were sent.
//
// Deprecated: use encoding.RegisterCompressor instead.
func RPCCompressor(cp Compressor) ServerOption {
return func(o *options) {
o.cp = cp
}
}
// RPCDecompressor returns a ServerOption that sets a decompressor for inbound messages.
// RPCDecompressor returns a ServerOption that sets a decompressor for inbound
// messages. It has higher priority than decompressors registered via
// encoding.RegisterCompressor.
//
// Deprecated: use encoding.RegisterCompressor instead.
func RPCDecompressor(dc Decompressor) ServerOption {
return func(o *options) {
o.dc = dc
@@ -198,7 +226,9 @@ func RPCDecompressor(dc Decompressor) ServerOption {
}
// MaxMsgSize returns a ServerOption to set the max message size in bytes the server can receive.
// If this is not set, gRPC uses the default limit. Deprecated: use MaxRecvMsgSize instead.
// If this is not set, gRPC uses the default limit.
//
// Deprecated: use MaxRecvMsgSize instead.
func MaxMsgSize(m int) ServerOption {
return MaxRecvMsgSize(m)
}
@@ -297,6 +327,8 @@ func UnknownServiceHandler(streamHandler StreamHandler) ServerOption {
// connection establishment (up to and including HTTP/2 handshaking) for all
// new connections. If this is not set, the default is 120 seconds. A zero or
// negative value will result in an immediate timeout.
//
// This API is EXPERIMENTAL.
func ConnectionTimeout(d time.Duration) ServerOption {
return func(o *options) {
o.connectionTimeout = d
@@ -310,22 +342,23 @@ func NewServer(opt ...ServerOption) *Server {
for _, o := range opt {
o(&opts)
}
if opts.codec == nil {
// Set the default codec.
opts.codec = protoCodec{}
}
s := &Server{
lis: make(map[net.Listener]bool),
opts: opts,
conns: make(map[io.Closer]bool),
m: make(map[string]*service),
quit: make(chan struct{}),
done: make(chan struct{}),
}
s.cv = sync.NewCond(&s.mu)
s.ctx, s.cancel = context.WithCancel(context.Background())
if EnableTracing {
_, file, line, _ := runtime.Caller(1)
s.events = trace.NewEventLog("grpc.Server", fmt.Sprintf("%s:%d", file, line))
}
if channelz.IsOn() {
s.channelzID = channelz.RegisterServer(s, "")
}
return s
}
@@ -430,11 +463,9 @@ func (s *Server) GetServiceInfo() map[string]ServiceInfo {
return ret
}
var (
// ErrServerStopped indicates that the operation is now illegal because of
// the server being stopped.
ErrServerStopped = errors.New("grpc: the server has been stopped")
)
// ErrServerStopped indicates that the operation is now illegal because of
// 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 {
@@ -443,28 +474,66 @@ func (s *Server) useTransportAuthenticator(rawConn net.Conn) (net.Conn, credenti
return s.opts.creds.ServerHandshake(rawConn)
}
type listenSocket struct {
net.Listener
channelzID int64
}
func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric {
return &channelz.SocketInternalMetric{
LocalAddr: l.Listener.Addr(),
}
}
func (l *listenSocket) Close() error {
err := l.Listener.Close()
if channelz.IsOn() {
channelz.RemoveEntry(l.channelzID)
}
return err
}
// Serve accepts incoming connections on the listener lis, creating a new
// ServerTransport and service goroutine for each. The service goroutines
// read gRPC requests and then call the registered handlers to reply to them.
// Serve returns when lis.Accept fails with fatal errors. lis will be closed when
// this method returns.
// Serve always returns non-nil error.
// Serve will return a non-nil error unless Stop or GracefulStop is called.
func (s *Server) Serve(lis net.Listener) error {
s.mu.Lock()
s.printf("serving")
s.serve = true
if s.lis == nil {
// Serve called after Stop or GracefulStop.
s.mu.Unlock()
lis.Close()
return ErrServerStopped
}
s.lis[lis] = true
s.serveWG.Add(1)
defer func() {
s.serveWG.Done()
select {
// Stop or GracefulStop called; block until done and return nil.
case <-s.quit:
<-s.done
default:
}
}()
ls := &listenSocket{Listener: lis}
s.lis[ls] = true
if channelz.IsOn() {
ls.channelzID = channelz.RegisterListenSocket(ls, s.channelzID, "")
}
s.mu.Unlock()
defer func() {
s.mu.Lock()
if s.lis != nil && s.lis[lis] {
lis.Close()
delete(s.lis, lis)
if s.lis != nil && s.lis[ls] {
ls.Close()
delete(s.lis, ls)
}
s.mu.Unlock()
}()
@@ -491,25 +560,39 @@ func (s *Server) Serve(lis net.Listener) error {
timer := time.NewTimer(tempDelay)
select {
case <-timer.C:
case <-s.ctx.Done():
}
case <-s.quit:
timer.Stop()
return nil
}
continue
}
s.mu.Lock()
s.printf("done serving; Accept = %v", err)
s.mu.Unlock()
select {
case <-s.quit:
return nil
default:
}
return err
}
tempDelay = 0
// Start a new goroutine to deal with rawConn
// so we don't stall this Accept loop goroutine.
go s.handleRawConn(rawConn)
// Start a new goroutine to deal with rawConn so we don't stall this Accept
// loop goroutine.
//
// Make sure we account for the goroutine so GracefulStop doesn't nil out
// s.conns before this conn can be added.
s.serveWG.Add(1)
go func() {
s.handleRawConn(rawConn)
s.serveWG.Done()
}()
}
}
// handleRawConn is run in its own goroutine and handles a just-accepted
// connection that has not had any I/O performed on it yet.
// handleRawConn forks a goroutine to handle a just-accepted connection that
// has not had any I/O performed on it yet.
func (s *Server) handleRawConn(rawConn net.Conn) {
rawConn.SetDeadline(time.Now().Add(s.opts.connectionTimeout))
conn, authInfo, err := s.useTransportAuthenticator(rawConn)
@@ -534,17 +617,28 @@ func (s *Server) handleRawConn(rawConn net.Conn) {
}
s.mu.Unlock()
var serve func()
c := conn.(io.Closer)
if s.opts.useHandlerImpl {
rawConn.SetDeadline(time.Time{})
s.serveUsingHandler(conn)
serve = func() { s.serveUsingHandler(conn) }
} else {
// Finish handshaking (HTTP2)
st := s.newHTTP2Transport(conn, authInfo)
if st == nil {
return
}
rawConn.SetDeadline(time.Time{})
s.serveStreams(st)
c = st
serve = func() { s.serveStreams(st) }
}
rawConn.SetDeadline(time.Time{})
if !s.addConn(c) {
return
}
go func() {
serve()
s.removeConn(c)
}()
}
// newHTTP2Transport sets up a http/2 transport (using the
@@ -561,6 +655,7 @@ func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) tr
InitialConnWindowSize: s.opts.initialConnWindowSize,
WriteBufferSize: s.opts.writeBufferSize,
ReadBufferSize: s.opts.readBufferSize,
ChannelzParentID: s.channelzID,
}
st, err := transport.NewServerTransport("http2", c, config)
if err != nil {
@@ -571,15 +666,11 @@ func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) tr
grpclog.Warningln("grpc: Server.Serve failed to create ServerTransport: ", err)
return nil
}
if !s.addConn(st) {
st.Close()
return nil
}
return st
}
func (s *Server) serveStreams(st transport.ServerTransport) {
defer s.removeConn(st)
defer st.Close()
var wg sync.WaitGroup
st.HandleStreams(func(stream *transport.Stream) {
@@ -613,11 +704,6 @@ var _ http.Handler = (*Server)(nil)
//
// conn is the *tls.Conn that's already been authenticated.
func (s *Server) serveUsingHandler(conn net.Conn) {
if !s.addConn(conn) {
conn.Close()
return
}
defer s.removeConn(conn)
h2s := &http2.Server{
MaxConcurrentStreams: s.opts.maxConcurrentStreams,
}
@@ -651,13 +737,12 @@ func (s *Server) serveUsingHandler(conn net.Conn) {
// available through grpc-go's HTTP/2 server, and it is currently EXPERIMENTAL
// and subject to change.
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
st, err := transport.NewServerHandlerTransport(w, r)
st, err := transport.NewServerHandlerTransport(w, r, s.opts.statsHandler)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if !s.addConn(st) {
st.Close()
return
}
defer s.removeConn(st)
@@ -687,9 +772,15 @@ func (s *Server) traceInfo(st transport.ServerTransport, stream *transport.Strea
func (s *Server) addConn(c io.Closer) bool {
s.mu.Lock()
defer s.mu.Unlock()
if s.conns == nil || s.drain {
if s.conns == nil {
c.Close()
return false
}
if s.drain {
// Transport added after we drained our existing conns: drain it
// immediately.
c.(transport.ServerTransport).Drain()
}
s.conns[c] = true
return true
}
@@ -703,42 +794,82 @@ func (s *Server) removeConn(c io.Closer) {
}
}
func (s *Server) sendResponse(t transport.ServerTransport, stream *transport.Stream, msg interface{}, cp Compressor, opts *transport.Options) error {
var (
cbuf *bytes.Buffer
outPayload *stats.OutPayload
)
if cp != nil {
cbuf = new(bytes.Buffer)
// ChannelzMetric returns ServerInternalMetric of current server.
// This is an EXPERIMENTAL API.
func (s *Server) ChannelzMetric() *channelz.ServerInternalMetric {
s.czmu.RLock()
defer s.czmu.RUnlock()
return &channelz.ServerInternalMetric{
CallsStarted: s.callsStarted,
CallsSucceeded: s.callsSucceeded,
CallsFailed: s.callsFailed,
LastCallStartedTimestamp: s.lastCallStartedTime,
}
if s.opts.statsHandler != nil {
outPayload = &stats.OutPayload{}
}
hdr, data, err := encode(s.opts.codec, msg, cp, cbuf, outPayload)
}
func (s *Server) incrCallsStarted() {
s.czmu.Lock()
s.callsStarted++
s.lastCallStartedTime = time.Now()
s.czmu.Unlock()
}
func (s *Server) incrCallsSucceeded() {
s.czmu.Lock()
s.callsSucceeded++
s.czmu.Unlock()
}
func (s *Server) incrCallsFailed() {
s.czmu.Lock()
s.callsFailed++
s.czmu.Unlock()
}
func (s *Server) sendResponse(t transport.ServerTransport, stream *transport.Stream, msg interface{}, cp Compressor, opts *transport.Options, comp encoding.Compressor) error {
data, err := encode(s.getCodec(stream.ContentSubtype()), msg)
if err != nil {
grpclog.Errorln("grpc: server failed to encode response: ", err)
return err
}
if len(data) > s.opts.maxSendMessageSize {
return status.Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(data), s.opts.maxSendMessageSize)
compData, err := compress(data, cp, comp)
if err != nil {
grpclog.Errorln("grpc: server failed to compress response: ", err)
return err
}
err = t.Write(stream, hdr, data, opts)
if err == nil && outPayload != nil {
outPayload.SentTime = time.Now()
s.opts.statsHandler.HandleRPC(stream.Context(), outPayload)
hdr, payload := msgHeader(data, compData)
// TODO(dfawley): should we be checking len(data) instead?
if len(payload) > s.opts.maxSendMessageSize {
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()))
}
return err
}
func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, md *MethodDesc, trInfo *traceInfo) (err error) {
if channelz.IsOn() {
s.incrCallsStarted()
defer func() {
if err != nil && err != io.EOF {
s.incrCallsFailed()
} else {
s.incrCallsSucceeded()
}
}()
}
sh := s.opts.statsHandler
if sh != nil {
beginTime := time.Now()
begin := &stats.Begin{
BeginTime: time.Now(),
BeginTime: beginTime,
}
sh.HandleRPC(stream.Context(), begin)
defer func() {
end := &stats.End{
BeginTime: beginTime,
EndTime: time.Now(),
}
if err != nil && err != io.EOF {
@@ -758,10 +889,43 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
}
}()
}
if s.opts.cp != nil {
// NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686.
stream.SetSendCompress(s.opts.cp.Type())
// comp and cp are used for compression. decomp and dc are used for
// decompression. If comp and decomp are both set, they are the same;
// however they are kept separate to ensure that at most one of the
// compressor/decompressor variable pairs are set for use later.
var comp, decomp encoding.Compressor
var cp Compressor
var dc Decompressor
// If dc is set and matches the stream's compression, use it. Otherwise, try
// to find a matching registered compressor for decomp.
if rc := stream.RecvCompress(); s.opts.dc != nil && s.opts.dc.Type() == rc {
dc = s.opts.dc
} else if rc != "" && rc != encoding.Identity {
decomp = encoding.GetCompressor(rc)
if decomp == nil {
st := status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", rc)
t.WriteStatus(stream, st)
return st.Err()
}
}
// If cp is set, use it. Otherwise, attempt to compress the response using
// the incoming message compression method.
//
// 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())
} 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)
}
}
p := &parser{r: stream}
pf, req, err := p.recvMsg(s.opts.maxReceiveMessageSize)
if err == io.EOF {
@@ -769,7 +933,7 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
return err
}
if err == io.ErrUnexpectedEOF {
err = Errorf(codes.Internal, io.ErrUnexpectedEOF.Error())
err = status.Errorf(codes.Internal, io.ErrUnexpectedEOF.Error())
}
if err != nil {
if st, ok := status.FromError(err); ok {
@@ -790,19 +954,14 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
}
return err
}
if err := checkRecvPayload(pf, stream.RecvCompress(), s.opts.dc); err != nil {
if st, ok := status.FromError(err); ok {
if channelz.IsOn() {
t.IncrMsgRecv()
}
if st := checkRecvPayload(pf, stream.RecvCompress(), dc != nil || decomp != nil); st != nil {
if e := t.WriteStatus(stream, st); e != nil {
grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e)
}
return err
}
if e := t.WriteStatus(stream, status.New(codes.Internal, err.Error())); e != nil {
grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e)
}
// TODO checkRecvPayload always return RPC error. Add a return here if necessary.
return st.Err()
}
var inPayload *stats.InPayload
if sh != nil {
@@ -816,9 +975,17 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
}
if pf == compressionMade {
var err error
req, err = s.opts.dc.Do(bytes.NewReader(req))
if dc != nil {
req, err = dc.Do(bytes.NewReader(req))
if err != nil {
return Errorf(codes.Internal, err.Error())
return status.Errorf(codes.Internal, err.Error())
}
} else {
tmp, _ := decomp.Decompress(bytes.NewReader(req))
req, err = ioutil.ReadAll(tmp)
if err != nil {
return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
}
}
}
if len(req) > s.opts.maxReceiveMessageSize {
@@ -826,7 +993,7 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
// java implementation.
return status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(req), s.opts.maxReceiveMessageSize)
}
if err := s.opts.codec.Unmarshal(req, v); err != nil {
if err := s.getCodec(stream.ContentSubtype()).Unmarshal(req, v); err != nil {
return status.Errorf(codes.Internal, "grpc: error unmarshalling request: %v", err)
}
if inPayload != nil {
@@ -840,12 +1007,13 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
}
return nil
}
reply, appErr := md.Handler(srv.server, stream.Context(), df, s.opts.unaryInt)
ctx := NewContextWithServerTransportStream(stream.Context(), stream)
reply, appErr := md.Handler(srv.server, ctx, df, s.opts.unaryInt)
if appErr != nil {
appStatus, ok := status.FromError(appErr)
if !ok {
// Convert appErr if it is not a grpc status error.
appErr = status.Error(convertCode(appErr), appErr.Error())
appErr = status.Error(codes.Unknown, appErr.Error())
appStatus, _ = status.FromError(appErr)
}
if trInfo != nil {
@@ -864,7 +1032,8 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
Last: true,
Delay: false,
}
if err := s.sendResponse(t, stream, reply, s.opts.cp, opts); err != nil {
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).
return err
@@ -887,6 +1056,9 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
}
return err
}
if channelz.IsOn() {
t.IncrMsgSent()
}
if trInfo != nil {
trInfo.tr.LazyLog(&payload{sent: true, msg: reply}, true)
}
@@ -897,14 +1069,26 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
}
func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, sd *StreamDesc, trInfo *traceInfo) (err error) {
if channelz.IsOn() {
s.incrCallsStarted()
defer func() {
if err != nil && err != io.EOF {
s.incrCallsFailed()
} else {
s.incrCallsSucceeded()
}
}()
}
sh := s.opts.statsHandler
if sh != nil {
beginTime := time.Now()
begin := &stats.Begin{
BeginTime: time.Now(),
BeginTime: beginTime,
}
sh.HandleRPC(stream.Context(), begin)
defer func() {
end := &stats.End{
BeginTime: beginTime,
EndTime: time.Now(),
}
if err != nil && err != io.EOF {
@@ -913,21 +1097,47 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp
sh.HandleRPC(stream.Context(), end)
}()
}
if s.opts.cp != nil {
stream.SetSendCompress(s.opts.cp.Type())
}
ctx := NewContextWithServerTransportStream(stream.Context(), stream)
ss := &serverStream{
ctx: ctx,
t: t,
s: stream,
p: &parser{r: stream},
codec: s.opts.codec,
cp: s.opts.cp,
dc: s.opts.dc,
codec: s.getCodec(stream.ContentSubtype()),
maxReceiveMessageSize: s.opts.maxReceiveMessageSize,
maxSendMessageSize: s.opts.maxSendMessageSize,
trInfo: trInfo,
statsHandler: sh,
}
// If dc is set and matches the stream's compression, use it. Otherwise, try
// to find a matching registered compressor for decomp.
if rc := stream.RecvCompress(); s.opts.dc != nil && s.opts.dc.Type() == rc {
ss.dc = s.opts.dc
} else if rc != "" && rc != encoding.Identity {
ss.decomp = encoding.GetCompressor(rc)
if ss.decomp == nil {
st := status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", rc)
t.WriteStatus(ss.s, st)
return st.Err()
}
}
// If cp is set, use it. Otherwise, attempt to compress the response using
// the incoming message compression method.
//
// 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())
} 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)
}
}
if trInfo != nil {
trInfo.tr.LazyLog(&trInfo.firstLine, false)
defer func() {
@@ -963,7 +1173,7 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp
case transport.StreamError:
appStatus = status.New(err.Code, err.Desc)
default:
appStatus = status.New(convertCode(appErr), appErr.Error())
appStatus = status.New(codes.Unknown, appErr.Error())
}
appErr = appStatus.Err()
}
@@ -983,7 +1193,6 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp
ss.mu.Unlock()
}
return t.WriteStatus(ss.s, status.New(codes.OK, ""))
}
func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Stream, trInfo *traceInfo) {
@@ -1065,12 +1274,65 @@ func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Str
}
}
// The key to save ServerTransportStream in the context.
type streamKey struct{}
// NewContextWithServerTransportStream creates a new context from ctx and
// attaches stream to it.
//
// This API is EXPERIMENTAL.
func NewContextWithServerTransportStream(ctx context.Context, stream ServerTransportStream) context.Context {
return context.WithValue(ctx, streamKey{}, stream)
}
// ServerTransportStream is a minimal interface that a transport stream must
// implement. This can be used to mock an actual transport stream for tests of
// handler code that use, for example, grpc.SetHeader (which requires some
// stream to be in context).
//
// See also NewContextWithServerTransportStream.
//
// This API is EXPERIMENTAL.
type ServerTransportStream interface {
Method() string
SetHeader(md metadata.MD) error
SendHeader(md metadata.MD) error
SetTrailer(md metadata.MD) error
}
// ServerTransportStreamFromContext returns the ServerTransportStream saved in
// ctx. Returns nil if the given context has no stream associated with it
// (which implies it is not an RPC invocation context).
//
// This API is EXPERIMENTAL.
func ServerTransportStreamFromContext(ctx context.Context) ServerTransportStream {
s, _ := ctx.Value(streamKey{}).(ServerTransportStream)
return s
}
// Stop stops the gRPC server. It immediately closes all open
// connections and listeners.
// It cancels all active RPCs on the server side and the corresponding
// pending RPCs on the client side will get notified by connection
// errors.
func (s *Server) Stop() {
s.quitOnce.Do(func() {
close(s.quit)
})
defer func() {
s.serveWG.Wait()
s.doneOnce.Do(func() {
close(s.done)
})
}()
s.channelzRemoveOnce.Do(func() {
if channelz.IsOn() {
channelz.RemoveEntry(s.channelzID)
}
})
s.mu.Lock()
listeners := s.lis
s.lis = nil
@@ -1088,7 +1350,6 @@ func (s *Server) Stop() {
}
s.mu.Lock()
s.cancel()
if s.events != nil {
s.events.Finish()
s.events = nil
@@ -1100,22 +1361,44 @@ func (s *Server) Stop() {
// accepting new connections and RPCs and blocks until all the pending RPCs are
// finished.
func (s *Server) GracefulStop() {
s.quitOnce.Do(func() {
close(s.quit)
})
defer func() {
s.doneOnce.Do(func() {
close(s.done)
})
}()
s.channelzRemoveOnce.Do(func() {
if channelz.IsOn() {
channelz.RemoveEntry(s.channelzID)
}
})
s.mu.Lock()
defer s.mu.Unlock()
if s.conns == nil {
s.mu.Unlock()
return
}
for lis := range s.lis {
lis.Close()
}
s.lis = nil
s.cancel()
if !s.drain {
for c := range s.conns {
c.(transport.ServerTransport).Drain()
}
s.drain = true
}
// Wait for serving threads to be ready to exit. Only then can we be sure no
// new conns will be created.
s.mu.Unlock()
s.serveWG.Wait()
s.mu.Lock()
for len(s.conns) != 0 {
s.cv.Wait()
}
@@ -1124,26 +1407,29 @@ func (s *Server) GracefulStop() {
s.events.Finish()
s.events = nil
}
s.mu.Unlock()
}
func init() {
internal.TestingCloseConns = func(arg interface{}) {
arg.(*Server).testingCloseConns()
}
internal.TestingUseHandlerImpl = func(arg interface{}) {
arg.(*Server).opts.useHandlerImpl = true
}
}
// testingCloseConns closes all existing transports but keeps s.lis
// accepting new connections.
func (s *Server) testingCloseConns() {
s.mu.Lock()
for c := range s.conns {
c.Close()
delete(s.conns, c)
// contentSubtype must be lowercase
// cannot return nil
func (s *Server) getCodec(contentSubtype string) baseCodec {
if s.opts.codec != nil {
return s.opts.codec
}
s.mu.Unlock()
if contentSubtype == "" {
return encoding.GetCodec(proto.Name)
}
codec := encoding.GetCodec(contentSubtype)
if codec == nil {
return encoding.GetCodec(proto.Name)
}
return codec
}
// SetHeader sets the header metadata.
@@ -1156,9 +1442,9 @@ func SetHeader(ctx context.Context, md metadata.MD) error {
if md.Len() == 0 {
return nil
}
stream, ok := transport.StreamFromContext(ctx)
if !ok {
return Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
stream := ServerTransportStreamFromContext(ctx)
if stream == nil {
return status.Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
}
return stream.SetHeader(md)
}
@@ -1166,15 +1452,11 @@ func SetHeader(ctx context.Context, md metadata.MD) error {
// SendHeader sends header metadata. It may be called at most once.
// The provided md and headers set by SetHeader() will be sent.
func SendHeader(ctx context.Context, md metadata.MD) error {
stream, ok := transport.StreamFromContext(ctx)
if !ok {
return Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
stream := ServerTransportStreamFromContext(ctx)
if stream == nil {
return status.Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
}
t := stream.ServerTransport()
if t == nil {
grpclog.Fatalf("grpc: SendHeader: %v has no ServerTransport to send header metadata.", stream)
}
if err := t.WriteHeader(stream, md); err != nil {
if err := stream.SendHeader(md); err != nil {
return toRPCErr(err)
}
return nil
@@ -1186,9 +1468,19 @@ func SetTrailer(ctx context.Context, md metadata.MD) error {
if md.Len() == 0 {
return nil
}
stream, ok := transport.StreamFromContext(ctx)
if !ok {
return Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
stream := ServerTransportStreamFromContext(ctx)
if stream == nil {
return status.Errorf(codes.Internal, "grpc: failed to fetch the stream from the context %v", ctx)
}
return stream.SetTrailer(md)
}
// Method returns the method string for the server context. The returned
// string is in the format of "/service/method".
func Method(ctx context.Context) (string, bool) {
s := ServerTransportStreamFromContext(ctx)
if s == nil {
return "", false
}
return s.Method(), true
}

233
vendor/google.golang.org/grpc/service_config.go generated vendored Normal file
View File

@@ -0,0 +1,233 @@
/*
*
* Copyright 2017 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 (
"encoding/json"
"fmt"
"strconv"
"strings"
"time"
"google.golang.org/grpc/grpclog"
)
const maxInt = int(^uint(0) >> 1)
// MethodConfig defines the configuration recommended by the service providers for a
// particular method.
//
// Deprecated: Users should not use this struct. Service config should be received
// through name resolver, as specified here
// https://github.com/grpc/grpc/blob/master/doc/service_config.md
type MethodConfig struct {
// WaitForReady indicates whether RPCs sent to this method should wait until
// the connection is ready by default (!failfast). The value specified via the
// gRPC client API will override the value set here.
WaitForReady *bool
// Timeout is the default timeout for RPCs sent to this method. The actual
// deadline used will be the minimum of the value specified here and the value
// set by the application via the gRPC client API. If either one is not set,
// then the other will be used. If neither is set, then the RPC has no deadline.
Timeout *time.Duration
// MaxReqSize is the maximum allowed payload size for an individual request in a
// stream (client->server) in bytes. The size which is measured is the serialized
// payload after per-message compression (but before stream compression) in bytes.
// The actual value used is the minimum of the value specified here and the value set
// by the application via the gRPC client API. If either one is not set, then the other
// will be used. If neither is set, then the built-in default is used.
MaxReqSize *int
// MaxRespSize is the maximum allowed payload size for an individual response in a
// stream (server->client) in bytes.
MaxRespSize *int
}
// ServiceConfig is provided by the service provider and contains parameters for how
// clients that connect to the service should behave.
//
// Deprecated: Users should not use this struct. Service config should be received
// through name resolver, as specified here
// https://github.com/grpc/grpc/blob/master/doc/service_config.md
type ServiceConfig struct {
// LB is the load balancer the service providers recommends. The balancer specified
// via grpc.WithBalancer will override this.
LB *string
// Methods contains a map for the methods in this service.
// If there is an exact match for a method (i.e. /service/method) in the map, use the corresponding MethodConfig.
// If there's no exact match, look for the default config for the service (/service/) and use the corresponding MethodConfig if it exists.
// Otherwise, the method has no MethodConfig to use.
Methods map[string]MethodConfig
stickinessMetadataKey *string
}
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
}
func (j jsonName) generatePath() (string, bool) {
if j.Service == nil {
return "", false
}
res := "/" + *j.Service + "/"
if j.Method != nil {
res += *j.Method
}
return res, true
}
// TODO(lyuxuan): delete this struct after cleaning up old service config implementation.
type jsonMC struct {
Name *[]jsonName
WaitForReady *bool
Timeout *string
MaxRequestMessageBytes *int64
MaxResponseMessageBytes *int64
}
// TODO(lyuxuan): delete this struct after cleaning up old service config implementation.
type jsonSC struct {
LoadBalancingPolicy *string
StickinessMetadataKey *string
MethodConfig *[]jsonMC
}
func parseServiceConfig(js string) (ServiceConfig, error) {
var rsc jsonSC
err := json.Unmarshal([]byte(js), &rsc)
if err != nil {
grpclog.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err)
return ServiceConfig{}, err
}
sc := ServiceConfig{
LB: rsc.LoadBalancingPolicy,
Methods: make(map[string]MethodConfig),
stickinessMetadataKey: rsc.StickinessMetadataKey,
}
if rsc.MethodConfig == nil {
return sc, nil
}
for _, m := range *rsc.MethodConfig {
if m.Name == nil {
continue
}
d, err := parseDuration(m.Timeout)
if err != nil {
grpclog.Warningf("grpc: parseServiceConfig error unmarshaling %s due to %v", js, err)
return ServiceConfig{}, err
}
mc := MethodConfig{
WaitForReady: m.WaitForReady,
Timeout: d,
}
if m.MaxRequestMessageBytes != nil {
if *m.MaxRequestMessageBytes > int64(maxInt) {
mc.MaxReqSize = newInt(maxInt)
} else {
mc.MaxReqSize = newInt(int(*m.MaxRequestMessageBytes))
}
}
if m.MaxResponseMessageBytes != nil {
if *m.MaxResponseMessageBytes > int64(maxInt) {
mc.MaxRespSize = newInt(maxInt)
} else {
mc.MaxRespSize = newInt(int(*m.MaxResponseMessageBytes))
}
}
for _, n := range *m.Name {
if path, valid := n.generatePath(); valid {
sc.Methods[path] = mc
}
}
}
return sc, nil
}
func min(a, b *int) *int {
if *a < *b {
return a
}
return b
}
func getMaxSize(mcMax, doptMax *int, defaultVal int) *int {
if mcMax == nil && doptMax == nil {
return &defaultVal
}
if mcMax != nil && doptMax != nil {
return min(mcMax, doptMax)
}
if mcMax != nil {
return mcMax
}
return doptMax
}
func newInt(b int) *int {
return &b
}

2
vendor/google.golang.org/grpc/stats/stats.go generated vendored
View File

@@ -169,6 +169,8 @@ func (s *OutTrailer) isRPCStats() {}
type End struct {
// Client is true if this End is from client side.
Client bool
// BeginTime is the time when the RPC began.
BeginTime time.Time
// EndTime is the time when the RPC ends.
EndTime time.Time
// Error is the error the RPC ended with. It is an error generated from

7
vendor/google.golang.org/grpc/status/BUILD generated vendored
View File

@@ -2,13 +2,18 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["status.go"],
srcs = [
"go16.go",
"go17.go",
"status.go",
],
importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/status",
importpath = "google.golang.org/grpc/status",
visibility = ["//visibility:public"],
deps = [
"//vendor/github.com/golang/protobuf/proto:go_default_library",
"//vendor/github.com/golang/protobuf/ptypes:go_default_library",
"//vendor/golang.org/x/net/context:go_default_library",
"//vendor/google.golang.org/genproto/googleapis/rpc/status:go_default_library",
"//vendor/google.golang.org/grpc/codes:go_default_library",
],

42
vendor/google.golang.org/grpc/status/go16.go generated vendored Normal file
View File

@@ -0,0 +1,42 @@
// +build go1.6,!go1.7
/*
*
* Copyright 2018 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 status
import (
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
)
// 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.
func FromContextError(err error) *Status {
switch err {
case nil:
return New(codes.OK, "")
case context.DeadlineExceeded:
return New(codes.DeadlineExceeded, err.Error())
case context.Canceled:
return New(codes.Canceled, err.Error())
default:
return New(codes.Unknown, err.Error())
}
}

44
vendor/google.golang.org/grpc/status/go17.go generated vendored Normal file
View File

@@ -0,0 +1,44 @@
// +build go1.7
/*
*
* Copyright 2018 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 status
import (
"context"
netctx "golang.org/x/net/context"
"google.golang.org/grpc/codes"
)
// 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.
func FromContextError(err error) *Status {
switch err {
case nil:
return New(codes.OK, "")
case context.DeadlineExceeded, netctx.DeadlineExceeded:
return New(codes.DeadlineExceeded, err.Error())
case context.Canceled, netctx.Canceled:
return New(codes.Canceled, err.Error())
default:
return New(codes.Unknown, err.Error())
}
}

31
vendor/google.golang.org/grpc/status/status.go generated vendored
View File

@@ -46,7 +46,7 @@ func (se *statusError) Error() string {
return fmt.Sprintf("rpc error: code = %s desc = %s", codes.Code(p.GetCode()), p.GetMessage())
}
func (se *statusError) status() *Status {
func (se *statusError) GRPCStatus() *Status {
return &Status{s: (*spb.Status)(se)}
}
@@ -120,15 +120,23 @@ func FromProto(s *spb.Status) *Status {
}
// FromError returns a Status representing err if it was produced from this
// package, otherwise it returns nil, false.
// package or has a method `GRPCStatus() *Status`. Otherwise, ok is false and a
// Status is returned with codes.Unknown and the original error message.
func FromError(err error) (s *Status, ok bool) {
if err == nil {
return &Status{s: &spb.Status{Code: int32(codes.OK)}}, true
}
if s, ok := err.(*statusError); ok {
return s.status(), true
if se, ok := err.(interface{ GRPCStatus() *Status }); ok {
return se.GRPCStatus(), true
}
return nil, false
return New(codes.Unknown, err.Error()), false
}
// Convert is a convenience function which removes the need to handle the
// boolean return value from FromError.
func Convert(err error) *Status {
s, _ := FromError(err)
return s
}
// WithDetails returns a new status with the provided details messages appended to the status.
@@ -166,3 +174,16 @@ func (s *Status) Details() []interface{} {
}
return details
}
// Code returns the Code of the error if it is a Status error, 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
}

97
vendor/google.golang.org/grpc/stickiness_linkedmap.go generated vendored Normal file
View File

@@ -0,0 +1,97 @@
/*
*
* Copyright 2018 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 (
"container/list"
)
type linkedMapKVPair struct {
key string
value *stickyStoreEntry
}
// linkedMap is an implementation of a map that supports removing the oldest
// entry.
//
// linkedMap is NOT thread safe.
//
// It's for use of stickiness only!
type linkedMap struct {
m map[string]*list.Element
l *list.List // Head of the list is the oldest element.
}
// newLinkedMap returns a new LinkedMap.
func newLinkedMap() *linkedMap {
return &linkedMap{
m: make(map[string]*list.Element),
l: list.New(),
}
}
// put adds entry (key, value) to the map. Existing key will be overridden.
func (m *linkedMap) put(key string, value *stickyStoreEntry) {
if oldE, ok := m.m[key]; ok {
// Remove existing entry.
m.l.Remove(oldE)
}
e := m.l.PushBack(&linkedMapKVPair{key: key, value: value})
m.m[key] = e
}
// get returns the value of the given key.
func (m *linkedMap) get(key string) (*stickyStoreEntry, bool) {
e, ok := m.m[key]
if !ok {
return nil, false
}
m.l.MoveToBack(e)
return e.Value.(*linkedMapKVPair).value, true
}
// remove removes key from the map, and returns the value. The map is not
// modified if key is not in the map.
func (m *linkedMap) remove(key string) (*stickyStoreEntry, bool) {
e, ok := m.m[key]
if !ok {
return nil, false
}
delete(m.m, key)
m.l.Remove(e)
return e.Value.(*linkedMapKVPair).value, true
}
// len returns the len of the map.
func (m *linkedMap) len() int {
return len(m.m)
}
// clear removes all elements from the map.
func (m *linkedMap) clear() {
m.m = make(map[string]*list.Element)
m.l = list.New()
}
// removeOldest removes the oldest key from the map.
func (m *linkedMap) removeOldest() {
e := m.l.Front()
m.l.Remove(e)
delete(m.m, e.Value.(*linkedMapKVPair).key)
}

644
vendor/google.golang.org/grpc/stream.go generated vendored
View File

@@ -19,7 +19,6 @@
package grpc
import (
"bytes"
"errors"
"io"
"sync"
@@ -29,15 +28,19 @@ import (
"golang.org/x/net/trace"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/encoding"
"google.golang.org/grpc/internal/channelz"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/peer"
"google.golang.org/grpc/stats"
"google.golang.org/grpc/status"
"google.golang.org/grpc/transport"
)
// StreamHandler defines the handler called by gRPC server to complete the
// execution of a streaming RPC.
// 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.
type StreamHandler func(srv interface{}, stream ServerStream) error
// StreamDesc represents a streaming RPC service's method specification.
@@ -51,6 +54,8 @@ type StreamDesc struct {
}
// Stream defines the common interface a client or server stream has to satisfy.
//
// All errors returned from Stream are compatible with the status package.
type Stream interface {
// Context returns the context for this stream.
Context() context.Context
@@ -89,43 +94,78 @@ type ClientStream interface {
// Stream.SendMsg() may return a non-nil error when something wrong happens sending
// the request. The returned error indicates the status of this sending, not the final
// status of the RPC.
// Always call Stream.RecvMsg() to get the final status if you care about the status of
// the RPC.
//
// Always call Stream.RecvMsg() to drain the stream and get the final
// status, otherwise there could be leaked resources.
Stream
}
// NewClientStream creates a new Stream for the client side. This is called
// by generated code.
func NewClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (_ ClientStream, err error) {
// NewStream creates a new Stream for the client side. This is typically
// called by generated code. ctx is used for the lifetime of the stream.
//
// 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.
//
// 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) {
// 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)
if cc.dopts.streamInt != nil {
return cc.dopts.streamInt(ctx, desc, cc, method, newClientStream, opts...)
}
return newClientStream(ctx, desc, cc, method, opts...)
}
// NewClientStream is a wrapper for ClientConn.NewStream.
//
// DEPRECATED: Use ClientConn.NewStream instead.
func NewClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error) {
return cc.NewStream(ctx, desc, method, opts...)
}
func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (_ ClientStream, err error) {
var (
t transport.ClientTransport
s *transport.Stream
done func(balancer.DoneInfo)
cancel context.CancelFunc
)
if channelz.IsOn() {
cc.incrCallsStarted()
defer func() {
if err != nil {
cc.incrCallsFailed()
}
}()
}
c := defaultCallInfo()
mc := cc.GetMethodConfig(method)
if mc.WaitForReady != nil {
c.failFast = !*mc.WaitForReady
}
if mc.Timeout != nil {
// Possible context leak:
// The cancel function for the child context we create will only be called
// when RecvMsg returns a non-nil error, if the ClientConn is closed, or if
// an error is generated by SendMsg.
// https://github.com/grpc/grpc-go/issues/1818.
var cancel context.CancelFunc
if mc.Timeout != nil && *mc.Timeout >= 0 {
ctx, cancel = context.WithTimeout(ctx, *mc.Timeout)
} else {
ctx, cancel = context.WithCancel(ctx)
}
defer func() {
if err != nil {
cancel()
}
}()
}
opts = append(cc.dopts.callOptions, opts...)
for _, o := range opts {
if err := o.before(c); err != nil {
return nil, toRPCErr(err)
@@ -133,6 +173,9 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
}
c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize)
c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize)
if err := setCallInfoCodec(c); err != nil {
return nil, err
}
callHdr := &transport.CallHdr{
Host: cc.authority,
@@ -142,9 +185,26 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
// If it's client streaming, the user may never send a request or send it any
// time soon, so we ask the transport to flush the header.
Flush: desc.ClientStreams,
ContentSubtype: c.contentSubtype,
}
if cc.dopts.cp != nil {
// Set our outgoing compression according to the UseCompressor CallOption, if
// set. In that case, also find the compressor from the encoding package.
// Otherwise, use the compressor configured by the WithCompressor DialOption,
// if set.
var cp Compressor
var comp encoding.Compressor
if ct := c.compressorType; ct != "" {
callHdr.SendCompress = ct
if ct != encoding.Identity {
comp = encoding.GetCompressor(ct)
if comp == nil {
return nil, status.Errorf(codes.Internal, "grpc: Compressor is not installed for requested grpc-encoding %q", ct)
}
}
} else if cc.dopts.cp != nil {
callHdr.SendCompress = cc.dopts.cp.Type()
cp = cc.dopts.cp
}
if c.creds != nil {
callHdr.Creds = c.creds
@@ -170,11 +230,13 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
}
ctx = newContextWithRPCInfo(ctx, c.failFast)
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: time.Now(),
BeginTime: beginTime,
FailFast: c.failFast,
}
sh.HandleRPC(ctx, begin)
@@ -184,94 +246,89 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
end := &stats.End{
Client: true,
Error: err,
BeginTime: beginTime,
EndTime: time.Now(),
}
sh.HandleRPC(ctx, end)
}
}()
}
var (
t transport.ClientTransport
s *transport.Stream
done func(balancer.DoneInfo)
)
for {
// Check to make sure the context has expired. This will prevent us from
// looping forever if an error occurs for wait-for-ready RPCs where no data
// is sent on the wire.
select {
case <-ctx.Done():
return nil, toRPCErr(ctx.Err())
default:
}
t, done, err = cc.getTransport(ctx, c.failFast)
if err != nil {
// TODO(zhaoq): Probably revisit the error handling.
if _, ok := status.FromError(err); ok {
return nil, err
}
if err == errConnClosing || err == errConnUnavailable {
if c.failFast {
return nil, Errorf(codes.Unavailable, "%v", err)
}
continue
}
// All the other errors are treated as Internal errors.
return nil, Errorf(codes.Internal, "%v", err)
}
s, err = t.NewStream(ctx, callHdr)
if err != nil {
if _, ok := err.(transport.ConnectionError); ok && done != nil {
// If error is connection error, transport was sending data on wire,
// and we are not sure if anything has been sent on wire.
// If error is not connection error, we are sure nothing has been sent.
updateRPCInfoInContext(ctx, rpcInfo{bytesSent: true, bytesReceived: false})
}
if done != nil {
done(balancer.DoneInfo{Err: err})
done = nil
}
if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast {
// In the event of any error from NewStream, we never attempted to write
// anything to the wire, so we can retry indefinitely for non-fail-fast
// RPCs.
if !c.failFast {
continue
}
return nil, toRPCErr(err)
}
break
}
// Set callInfo.peer object from stream's context.
if peer, ok := peer.FromContext(s.Context()); ok {
c.peer = peer
}
cs := &clientStream{
opts: opts,
c: c,
cc: cc,
desc: desc,
codec: cc.dopts.codec,
cp: cc.dopts.cp,
dc: cc.dopts.dc,
codec: c.codec,
cp: cp,
comp: comp,
cancel: cancel,
done: done,
attempt: &csAttempt{
t: t,
s: s,
p: &parser{r: s},
tracing: EnableTracing,
done: done,
dc: cc.dopts.dc,
ctx: ctx,
trInfo: trInfo,
statsCtx: ctx,
statsHandler: cc.dopts.copts.StatsHandler,
statsHandler: sh,
beginTime: beginTime,
},
}
// Listen on ctx.Done() to detect cancellation and s.Done() to detect normal termination
// when there is no pending I/O operations on this stream.
cs.c.stream = cs
cs.attempt.cs = cs
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.
go func() {
select {
case <-t.Error():
// Incur transport error, simply exit.
case <-cc.ctx.Done():
cs.finish(ErrClientConnClosing)
cs.closeTransportStream(ErrClientConnClosing)
case <-s.Done():
// TODO: The trace of the RPC is terminated here when there is no pending
// I/O, which is probably not the optimal solution.
cs.finish(s.Status().Err())
cs.closeTransportStream(nil)
case <-s.GoAway():
cs.finish(errConnDrain)
cs.closeTransportStream(errConnDrain)
case <-s.Context().Done():
err := s.Context().Err()
cs.finish(err)
cs.closeTransportStream(transport.ContextErr(err))
case <-ctx.Done():
cs.finish(toRPCErr(ctx.Err()))
}
}()
}
return cs, nil
}
@@ -279,244 +336,292 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
type clientStream struct {
opts []CallOption
c *callInfo
cc *ClientConn
desc *StreamDesc
codec baseCodec
cp Compressor
comp encoding.Compressor
cancel context.CancelFunc // cancels all attempts
sentLast bool // sent an end stream
mu sync.Mutex // guards finished
finished bool // TODO: replace with atomic cmpxchg or sync.Once?
attempt *csAttempt // the active client stream attempt
// TODO(hedging): hedging will have multiple attempts simultaneously.
}
// csAttempt implements a single transport stream attempt within a
// clientStream.
type csAttempt struct {
cs *clientStream
t transport.ClientTransport
s *transport.Stream
p *parser
desc *StreamDesc
codec Codec
cp Compressor
dc Decompressor
cancel context.CancelFunc
tracing bool // set to EnableTracing when the clientStream is created.
mu sync.Mutex
done func(balancer.DoneInfo)
closed bool
finished bool
// trInfo.tr is set when the clientStream is created (if EnableTracing is true),
// and is set to nil when the clientStream's finish method is called.
dc Decompressor
decomp encoding.Compressor
decompSet bool
ctx context.Context // the application's context, wrapped by stats/tracing
mu sync.Mutex // guards trInfo.tr
// trInfo.tr is set when created (if EnableTracing is true),
// and cleared when the finish method is called.
trInfo traceInfo
// statsCtx keeps the user context for stats handling.
// All stats collection should use the statsCtx (instead of the stream context)
// so that all the generated stats for a particular RPC can be associated in the processing phase.
statsCtx context.Context
statsHandler stats.Handler
beginTime time.Time
}
func (cs *clientStream) Context() context.Context {
return cs.s.Context()
// TODO(retry): commit the current attempt (the context has peer-aware data).
return cs.attempt.context()
}
func (cs *clientStream) Header() (metadata.MD, error) {
m, err := cs.s.Header()
m, err := cs.attempt.header()
if err != nil {
if _, ok := err.(transport.ConnectionError); !ok {
cs.closeTransportStream(err)
}
// TODO(retry): maybe retry on error or commit attempt on success.
err = toRPCErr(err)
cs.finish(err)
}
return m, err
}
func (cs *clientStream) Trailer() metadata.MD {
return cs.s.Trailer()
// TODO(retry): on error, maybe retry (trailers-only).
return cs.attempt.trailer()
}
func (cs *clientStream) SendMsg(m interface{}) (err error) {
if cs.tracing {
cs.mu.Lock()
if cs.trInfo.tr != nil {
cs.trInfo.tr.LazyLog(&payload{sent: true, msg: m}, true)
}
cs.mu.Unlock()
}
// TODO Investigate how to signal the stats handling party.
// generate error stats if err != nil && err != io.EOF?
defer func() {
if err != nil {
cs.finish(err)
}
if err == nil {
return
}
if err == io.EOF {
// Specialize the process for server streaming. SendMsg is only called
// once when creating the stream object. io.EOF needs to be skipped when
// the rpc is early finished (before the stream object is created.).
// TODO: It is probably better to move this into the generated code.
if !cs.desc.ClientStreams && cs.desc.ServerStreams {
err = nil
}
return
}
if _, ok := err.(transport.ConnectionError); !ok {
cs.closeTransportStream(err)
}
err = toRPCErr(err)
}()
var outPayload *stats.OutPayload
if cs.statsHandler != nil {
outPayload = &stats.OutPayload{
Client: true,
}
}
hdr, data, err := encode(cs.codec, m, cs.cp, bytes.NewBuffer([]byte{}), outPayload)
if err != nil {
return err
}
if cs.c.maxSendMessageSize == nil {
return Errorf(codes.Internal, "callInfo maxSendMessageSize field uninitialized(nil)")
}
if len(data) > *cs.c.maxSendMessageSize {
return Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(data), *cs.c.maxSendMessageSize)
}
err = cs.t.Write(cs.s, hdr, data, &transport.Options{Last: false})
if err == nil && outPayload != nil {
outPayload.SentTime = time.Now()
cs.statsHandler.HandleRPC(cs.statsCtx, outPayload)
}
return err
// TODO(retry): buffer message for replaying if not committed.
return cs.attempt.sendMsg(m)
}
func (cs *clientStream) RecvMsg(m interface{}) (err error) {
// TODO(retry): maybe retry on error or commit attempt on success.
return cs.attempt.recvMsg(m)
}
func (cs *clientStream) CloseSend() error {
cs.attempt.closeSend()
return nil
}
func (cs *clientStream) finish(err error) {
if err == io.EOF {
// Ending a stream with EOF indicates a success.
err = nil
}
cs.mu.Lock()
if cs.finished {
cs.mu.Unlock()
return
}
cs.finished = true
cs.mu.Unlock()
if channelz.IsOn() {
if err != nil {
cs.cc.incrCallsFailed()
} else {
cs.cc.incrCallsSucceeded()
}
}
// TODO(retry): commit current attempt if necessary.
cs.attempt.finish(err)
for _, o := range cs.opts {
o.after(cs.c)
}
cs.cancel()
}
func (a *csAttempt) context() context.Context {
return a.s.Context()
}
func (a *csAttempt) header() (metadata.MD, error) {
return a.s.Header()
}
func (a *csAttempt) trailer() metadata.MD {
return a.s.Trailer()
}
func (a *csAttempt) sendMsg(m interface{}) (err error) {
// TODO Investigate how to signal the stats handling party.
// generate error stats if err != nil && err != io.EOF?
cs := a.cs
defer func() {
// For non-client-streaming RPCs, we return nil instead of EOF on success
// because the generated code requires it. finish is not called; RecvMsg()
// will call it with the stream's status independently.
if err == io.EOF && !cs.desc.ClientStreams {
err = nil
}
if err != nil && err != io.EOF {
// Call finish on the client stream for errors generated by this SendMsg
// call, as these indicate problems created by this client. (Transport
// errors are converted to an io.EOF error below; the real error will be
// returned from RecvMsg eventually in that case, or be retried.)
cs.finish(err)
}
}()
// TODO: Check cs.sentLast and error if we already ended the stream.
if EnableTracing {
a.mu.Lock()
if a.trInfo.tr != nil {
a.trInfo.tr.LazyLog(&payload{sent: true, msg: m}, true)
}
a.mu.Unlock()
}
data, err := encode(cs.codec, m)
if err != nil {
return err
}
compData, err := compress(data, cs.cp, cs.comp)
if err != nil {
return err
}
hdr, payload := msgHeader(data, compData)
// TODO(dfawley): should we be checking len(data) instead?
if len(payload) > *cs.c.maxSendMessageSize {
return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), *cs.c.maxSendMessageSize)
}
if !cs.desc.ClientStreams {
cs.sentLast = true
}
err = a.t.Write(a.s, hdr, payload, &transport.Options{Last: !cs.desc.ClientStreams})
if err == nil {
if a.statsHandler != nil {
a.statsHandler.HandleRPC(a.ctx, outPayload(true, m, data, payload, time.Now()))
}
if channelz.IsOn() {
a.t.IncrMsgSent()
}
return nil
}
return io.EOF
}
func (a *csAttempt) recvMsg(m interface{}) (err error) {
cs := a.cs
defer func() {
if err != nil || !cs.desc.ServerStreams {
// err != nil or non-server-streaming indicates end of stream.
cs.finish(err)
}
}()
var inPayload *stats.InPayload
if cs.statsHandler != nil {
if a.statsHandler != nil {
inPayload = &stats.InPayload{
Client: true,
}
}
if cs.c.maxReceiveMessageSize == nil {
return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)")
if !a.decompSet {
// Block until we receive headers containing received message encoding.
if ct := a.s.RecvCompress(); ct != "" && ct != encoding.Identity {
if a.dc == nil || a.dc.Type() != ct {
// No configured decompressor, or it does not match the incoming
// message encoding; attempt to find a registered compressor that does.
a.dc = nil
a.decomp = encoding.GetCompressor(ct)
}
err = recv(cs.p, cs.codec, cs.s, cs.dc, m, *cs.c.maxReceiveMessageSize, inPayload)
defer func() {
// err != nil indicates the termination of the stream.
} else {
// No compression is used; disable our decompressor.
a.dc = nil
}
// Only initialize this state once per stream.
a.decompSet = true
}
err = recv(a.p, cs.codec, a.s, a.dc, m, *cs.c.maxReceiveMessageSize, inPayload, a.decomp)
if err != nil {
cs.finish(err)
if err == io.EOF {
if statusErr := a.s.Status().Err(); statusErr != nil {
return statusErr
}
}()
if err == nil {
if cs.tracing {
cs.mu.Lock()
if cs.trInfo.tr != nil {
cs.trInfo.tr.LazyLog(&payload{sent: false, msg: m}, true)
return io.EOF // indicates successful end of stream.
}
cs.mu.Unlock()
return toRPCErr(err)
}
if EnableTracing {
a.mu.Lock()
if a.trInfo.tr != nil {
a.trInfo.tr.LazyLog(&payload{sent: false, msg: m}, true)
}
a.mu.Unlock()
}
if inPayload != nil {
cs.statsHandler.HandleRPC(cs.statsCtx, inPayload)
a.statsHandler.HandleRPC(a.ctx, inPayload)
}
if !cs.desc.ClientStreams || cs.desc.ServerStreams {
return
if channelz.IsOn() {
a.t.IncrMsgRecv()
}
// Special handling for client streaming rpc.
if cs.desc.ServerStreams {
// Subsequent messages should be received by subsequent RecvMsg calls.
return nil
}
// Special handling for non-server-stream rpcs.
// This recv expects EOF or errors, so we don't collect inPayload.
if cs.c.maxReceiveMessageSize == nil {
return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)")
}
err = recv(cs.p, cs.codec, cs.s, cs.dc, m, *cs.c.maxReceiveMessageSize, nil)
cs.closeTransportStream(err)
err = recv(a.p, cs.codec, a.s, a.dc, m, *cs.c.maxReceiveMessageSize, nil, a.decomp)
if err == nil {
return toRPCErr(errors.New("grpc: client streaming protocol violation: get <nil>, want <EOF>"))
}
if err == io.EOF {
if se := cs.s.Status().Err(); se != nil {
return se
}
cs.finish(err)
return nil
}
return toRPCErr(err)
}
if _, ok := err.(transport.ConnectionError); !ok {
cs.closeTransportStream(err)
}
if err == io.EOF {
if statusErr := cs.s.Status().Err(); statusErr != nil {
return statusErr
}
// Returns io.EOF to indicate the end of the stream.
return
return a.s.Status().Err() // non-server streaming Recv returns nil on success
}
return toRPCErr(err)
}
func (cs *clientStream) CloseSend() (err error) {
err = cs.t.Write(cs.s, nil, nil, &transport.Options{Last: true})
defer func() {
if err != nil {
cs.finish(err)
}
}()
if err == nil || err == io.EOF {
return nil
}
if _, ok := err.(transport.ConnectionError); !ok {
cs.closeTransportStream(err)
}
err = toRPCErr(err)
func (a *csAttempt) closeSend() {
cs := a.cs
if cs.sentLast {
return
}
cs.sentLast = true
cs.attempt.t.Write(cs.attempt.s, nil, nil, &transport.Options{Last: true})
// We ignore errors from Write. Any error it would return would also be
// returned by a subsequent RecvMsg call, and the user is supposed to always
// finish the stream by calling RecvMsg until it returns err != nil.
}
func (cs *clientStream) closeTransportStream(err error) {
cs.mu.Lock()
if cs.closed {
cs.mu.Unlock()
return
}
cs.closed = true
cs.mu.Unlock()
cs.t.CloseStream(cs.s, err)
}
func (a *csAttempt) finish(err error) {
a.mu.Lock()
a.t.CloseStream(a.s, err)
func (cs *clientStream) finish(err error) {
cs.mu.Lock()
defer cs.mu.Unlock()
if cs.finished {
return
}
cs.finished = true
defer func() {
if cs.cancel != nil {
cs.cancel()
}
}()
for _, o := range cs.opts {
o.after(cs.c)
}
if cs.done != nil {
updateRPCInfoInContext(cs.s.Context(), rpcInfo{
bytesSent: cs.s.BytesSent(),
bytesReceived: cs.s.BytesReceived(),
if a.done != nil {
a.done(balancer.DoneInfo{
Err: err,
BytesSent: true,
BytesReceived: a.s.BytesReceived(),
})
cs.done(balancer.DoneInfo{Err: err})
cs.done = nil
}
if cs.statsHandler != nil {
if a.statsHandler != nil {
end := &stats.End{
Client: true,
BeginTime: a.beginTime,
EndTime: time.Now(),
Error: err,
}
if err != io.EOF {
// end.Error is nil if the RPC finished successfully.
end.Error = toRPCErr(err)
a.statsHandler.HandleRPC(a.ctx, end)
}
cs.statsHandler.HandleRPC(cs.statsCtx, end)
}
if !cs.tracing {
return
}
if cs.trInfo.tr != nil {
if err == nil || err == io.EOF {
cs.trInfo.tr.LazyPrintf("RPC: [OK]")
if a.trInfo.tr != nil {
if err == nil {
a.trInfo.tr.LazyPrintf("RPC: [OK]")
} else {
cs.trInfo.tr.LazyPrintf("RPC: [%v]", err)
cs.trInfo.tr.SetError()
a.trInfo.tr.LazyPrintf("RPC: [%v]", err)
a.trInfo.tr.SetError()
}
cs.trInfo.tr.Finish()
cs.trInfo.tr = nil
a.trInfo.tr.Finish()
a.trInfo.tr = nil
}
a.mu.Unlock()
}
// ServerStream defines the interface a server stream has to satisfy.
@@ -540,12 +645,17 @@ type ServerStream interface {
// serverStream implements a server side Stream.
type serverStream struct {
ctx context.Context
t transport.ServerTransport
s *transport.Stream
p *parser
codec Codec
codec baseCodec
cp Compressor
dc Decompressor
comp encoding.Compressor
decomp encoding.Compressor
maxReceiveMessageSize int
maxSendMessageSize int
trInfo *traceInfo
@@ -556,7 +666,7 @@ type serverStream struct {
}
func (ss *serverStream) Context() context.Context {
return ss.s.Context()
return ss.ctx
}
func (ss *serverStream) SetHeader(md metadata.MD) error {
@@ -575,7 +685,6 @@ func (ss *serverStream) SetTrailer(md metadata.MD) {
return
}
ss.s.SetTrailer(md)
return
}
func (ss *serverStream) SendMsg(m interface{}) (err error) {
@@ -596,24 +705,28 @@ func (ss *serverStream) SendMsg(m interface{}) (err error) {
st, _ := status.FromError(toRPCErr(err))
ss.t.WriteStatus(ss.s, st)
}
}()
var outPayload *stats.OutPayload
if ss.statsHandler != nil {
outPayload = &stats.OutPayload{}
if channelz.IsOn() && err == nil {
ss.t.IncrMsgSent()
}
hdr, data, err := encode(ss.codec, m, ss.cp, bytes.NewBuffer([]byte{}), outPayload)
}()
data, err := encode(ss.codec, m)
if err != nil {
return err
}
if len(data) > ss.maxSendMessageSize {
return Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(data), ss.maxSendMessageSize)
compData, err := compress(data, ss.cp, ss.comp)
if err != nil {
return err
}
if err := ss.t.Write(ss.s, hdr, data, &transport.Options{Last: false}); err != nil {
hdr, payload := msgHeader(data, compData)
// TODO(dfawley): should we be checking len(data) instead?
if len(payload) > ss.maxSendMessageSize {
return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), ss.maxSendMessageSize)
}
if err := ss.t.Write(ss.s, hdr, payload, &transport.Options{Last: false}); err != nil {
return toRPCErr(err)
}
if outPayload != nil {
outPayload.SentTime = time.Now()
ss.statsHandler.HandleRPC(ss.s.Context(), outPayload)
if ss.statsHandler != nil {
ss.statsHandler.HandleRPC(ss.s.Context(), outPayload(false, m, data, payload, time.Now()))
}
return nil
}
@@ -636,17 +749,20 @@ func (ss *serverStream) RecvMsg(m interface{}) (err error) {
st, _ := status.FromError(toRPCErr(err))
ss.t.WriteStatus(ss.s, st)
}
if channelz.IsOn() && err == nil {
ss.t.IncrMsgRecv()
}
}()
var inPayload *stats.InPayload
if ss.statsHandler != nil {
inPayload = &stats.InPayload{}
}
if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxReceiveMessageSize, inPayload); err != nil {
if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxReceiveMessageSize, inPayload, ss.decomp); err != nil {
if err == io.EOF {
return err
}
if err == io.ErrUnexpectedEOF {
err = Errorf(codes.Internal, io.ErrUnexpectedEOF.Error())
err = status.Errorf(codes.Internal, io.ErrUnexpectedEOF.Error())
}
return toRPCErr(err)
}
@@ -655,3 +771,9 @@ func (ss *serverStream) RecvMsg(m interface{}) (err error) {
}
return nil
}
// MethodFromServerStream returns the method string for the input stream.
// The returned string is in the format of "/service/method".
func MethodFromServerStream(stream ServerStream) (string, bool) {
return Method(stream.Context())
}

7
vendor/google.golang.org/grpc/transport/BUILD generated vendored
View File

@@ -4,7 +4,10 @@ go_library(
name = "go_default_library",
srcs = [
"bdp_estimator.go",
"control.go",
"controlbuf.go",
"flowcontrol.go",
"go16.go",
"go17.go",
"handler_server.go",
"http2_client.go",
"http2_server.go",
@@ -24,6 +27,8 @@ go_library(
"//vendor/google.golang.org/grpc/codes:go_default_library",
"//vendor/google.golang.org/grpc/credentials:go_default_library",
"//vendor/google.golang.org/grpc/grpclog:go_default_library",
"//vendor/google.golang.org/grpc/internal/channelz:go_default_library",
"//vendor/google.golang.org/grpc/internal/grpcrand:go_default_library",
"//vendor/google.golang.org/grpc/keepalive:go_default_library",
"//vendor/google.golang.org/grpc/metadata:go_default_library",
"//vendor/google.golang.org/grpc/peer:go_default_library",

9
vendor/google.golang.org/grpc/transport/bdp_estimator.go generated vendored
View File

@@ -41,12 +41,9 @@ const (
gamma = 2
)
var (
// Adding arbitrary data to ping so that its ack can be
// identified.
// Easter-egg: what does the ping message say?
bdpPing = &ping{data: [8]byte{2, 4, 16, 16, 9, 14, 7, 7}}
)
// Adding arbitrary data to ping so that its ack can be identified.
// Easter-egg: what does the ping message say?
var bdpPing = &ping{data: [8]byte{2, 4, 16, 16, 9, 14, 7, 7}}
type bdpEstimator struct {
// sentAt is the time when the ping was sent.

796
vendor/google.golang.org/grpc/transport/controlbuf.go generated vendored Normal file
View File

@@ -0,0 +1,796 @@
/*
*
* 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.
*
*/
package transport
import (
"bytes"
"fmt"
"runtime"
"sync"
"golang.org/x/net/http2"
"golang.org/x/net/http2/hpack"
)
var updateHeaderTblSize = func(e *hpack.Encoder, v uint32) {
e.SetMaxDynamicTableSizeLimit(v)
}
type itemNode struct {
it interface{}
next *itemNode
}
type itemList struct {
head *itemNode
tail *itemNode
}
func (il *itemList) enqueue(i interface{}) {
n := &itemNode{it: i}
if il.tail == nil {
il.head, il.tail = n, n
return
}
il.tail.next = n
il.tail = n
}
// peek returns the first item in the list without removing it from the
// list.
func (il *itemList) peek() interface{} {
return il.head.it
}
func (il *itemList) dequeue() interface{} {
if il.head == nil {
return nil
}
i := il.head.it
il.head = il.head.next
if il.head == nil {
il.tail = nil
}
return i
}
func (il *itemList) dequeueAll() *itemNode {
h := il.head
il.head, il.tail = nil, nil
return h
}
func (il *itemList) isEmpty() bool {
return il.head == nil
}
// The following defines various control items which could flow through
// the control buffer of transport. They represent different aspects of
// control tasks, e.g., flow control, settings, streaming resetting, etc.
// registerStream is used to register an incoming stream with loopy writer.
type registerStream struct {
streamID uint32
wq *writeQuota
}
// headerFrame is also used to register stream on the client-side.
type headerFrame struct {
streamID uint32
hf []hpack.HeaderField
endStream bool // Valid on server side.
initStream func(uint32) (bool, error) // Used only on the client side.
onWrite func()
wq *writeQuota // write quota for the stream created.
cleanup *cleanupStream // Valid on the server side.
onOrphaned func(error) // Valid on client-side
}
type cleanupStream struct {
streamID uint32
idPtr *uint32
rst bool
rstCode http2.ErrCode
onWrite func()
}
type dataFrame struct {
streamID uint32
endStream bool
h []byte
d []byte
// onEachWrite is called every time
// a part of d is written out.
onEachWrite func()
}
type incomingWindowUpdate struct {
streamID uint32
increment uint32
}
type outgoingWindowUpdate struct {
streamID uint32
increment uint32
}
type incomingSettings struct {
ss []http2.Setting
}
type outgoingSettings struct {
ss []http2.Setting
}
type settingsAck struct {
}
type incomingGoAway struct {
}
type goAway struct {
code http2.ErrCode
debugData []byte
headsUp bool
closeConn bool
}
type ping struct {
ack bool
data [8]byte
}
type outFlowControlSizeRequest struct {
resp chan uint32
}
type outStreamState int
const (
active outStreamState = iota
empty
waitingOnStreamQuota
)
type outStream struct {
id uint32
state outStreamState
itl *itemList
bytesOutStanding int
wq *writeQuota
next *outStream
prev *outStream
}
func (s *outStream) deleteSelf() {
if s.prev != nil {
s.prev.next = s.next
}
if s.next != nil {
s.next.prev = s.prev
}
s.next, s.prev = nil, nil
}
type outStreamList struct {
// Following are sentinel objects that mark the
// beginning and end of the list. They do not
// contain any item lists. All valid objects are
// inserted in between them.
// This is needed so that an outStream object can
// deleteSelf() in O(1) time without knowing which
// list it belongs to.
head *outStream
tail *outStream
}
func newOutStreamList() *outStreamList {
head, tail := new(outStream), new(outStream)
head.next = tail
tail.prev = head
return &outStreamList{
head: head,
tail: tail,
}
}
func (l *outStreamList) enqueue(s *outStream) {
e := l.tail.prev
e.next = s
s.prev = e
s.next = l.tail
l.tail.prev = s
}
// remove from the beginning of the list.
func (l *outStreamList) dequeue() *outStream {
b := l.head.next
if b == l.tail {
return nil
}
b.deleteSelf()
return b
}
type controlBuffer struct {
ch chan struct{}
done <-chan struct{}
mu sync.Mutex
consumerWaiting bool
list *itemList
err error
}
func newControlBuffer(done <-chan struct{}) *controlBuffer {
return &controlBuffer{
ch: make(chan struct{}, 1),
list: &itemList{},
done: done,
}
}
func (c *controlBuffer) put(it interface{}) error {
_, err := c.executeAndPut(nil, it)
return err
}
func (c *controlBuffer) executeAndPut(f func(it interface{}) bool, it interface{}) (bool, error) {
var wakeUp bool
c.mu.Lock()
if c.err != nil {
c.mu.Unlock()
return false, c.err
}
if f != nil {
if !f(it) { // f wasn't successful
c.mu.Unlock()
return false, nil
}
}
if c.consumerWaiting {
wakeUp = true
c.consumerWaiting = false
}
c.list.enqueue(it)
c.mu.Unlock()
if wakeUp {
select {
case c.ch <- struct{}{}:
default:
}
}
return true, nil
}
func (c *controlBuffer) get(block bool) (interface{}, error) {
for {
c.mu.Lock()
if c.err != nil {
c.mu.Unlock()
return nil, c.err
}
if !c.list.isEmpty() {
h := c.list.dequeue()
c.mu.Unlock()
return h, nil
}
if !block {
c.mu.Unlock()
return nil, nil
}
c.consumerWaiting = true
c.mu.Unlock()
select {
case <-c.ch:
case <-c.done:
c.finish()
return nil, ErrConnClosing
}
}
}
func (c *controlBuffer) finish() {
c.mu.Lock()
if c.err != nil {
c.mu.Unlock()
return
}
c.err = ErrConnClosing
// There may be headers for streams in the control buffer.
// These streams need to be cleaned out since the transport
// is still not aware of these yet.
for head := c.list.dequeueAll(); head != nil; head = head.next {
hdr, ok := head.it.(*headerFrame)
if !ok {
continue
}
if hdr.onOrphaned != nil { // It will be nil on the server-side.
hdr.onOrphaned(ErrConnClosing)
}
}
c.mu.Unlock()
}
type side int
const (
clientSide side = iota
serverSide
)
type loopyWriter struct {
side side
cbuf *controlBuffer
sendQuota uint32
oiws uint32 // outbound initial window size.
estdStreams map[uint32]*outStream // Established streams.
activeStreams *outStreamList // Streams that are sending data.
framer *framer
hBuf *bytes.Buffer // The buffer for HPACK encoding.
hEnc *hpack.Encoder // HPACK encoder.
bdpEst *bdpEstimator
draining bool
// Side-specific handlers
ssGoAwayHandler func(*goAway) (bool, error)
}
func newLoopyWriter(s side, fr *framer, cbuf *controlBuffer, bdpEst *bdpEstimator) *loopyWriter {
var buf bytes.Buffer
l := &loopyWriter{
side: s,
cbuf: cbuf,
sendQuota: defaultWindowSize,
oiws: defaultWindowSize,
estdStreams: make(map[uint32]*outStream),
activeStreams: newOutStreamList(),
framer: fr,
hBuf: &buf,
hEnc: hpack.NewEncoder(&buf),
bdpEst: bdpEst,
}
return l
}
const minBatchSize = 1000
// run should be run in a separate goroutine.
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.
infof("transport: loopyWriter.run returning. %v", err)
err = nil
}
}()
for {
it, err := l.cbuf.get(true)
if err != nil {
return err
}
if err = l.handle(it); err != nil {
return err
}
if _, err = l.processData(); err != nil {
return err
}
gosched := true
hasdata:
for {
it, err := l.cbuf.get(false)
if err != nil {
return err
}
if it != nil {
if err = l.handle(it); err != nil {
return err
}
if _, err = l.processData(); err != nil {
return err
}
continue hasdata
}
isEmpty, err := l.processData()
if err != nil {
return err
}
if !isEmpty {
continue hasdata
}
if gosched {
gosched = false
if l.framer.writer.offset < minBatchSize {
runtime.Gosched()
continue hasdata
}
}
l.framer.writer.Flush()
break hasdata
}
}
}
func (l *loopyWriter) outgoingWindowUpdateHandler(w *outgoingWindowUpdate) error {
return l.framer.fr.WriteWindowUpdate(w.streamID, w.increment)
}
func (l *loopyWriter) incomingWindowUpdateHandler(w *incomingWindowUpdate) error {
// Otherwise update the quota.
if w.streamID == 0 {
l.sendQuota += w.increment
return nil
}
// Find the stream and update it.
if str, ok := l.estdStreams[w.streamID]; ok {
str.bytesOutStanding -= int(w.increment)
if strQuota := int(l.oiws) - str.bytesOutStanding; strQuota > 0 && str.state == waitingOnStreamQuota {
str.state = active
l.activeStreams.enqueue(str)
return nil
}
}
return nil
}
func (l *loopyWriter) outgoingSettingsHandler(s *outgoingSettings) error {
return l.framer.fr.WriteSettings(s.ss...)
}
func (l *loopyWriter) incomingSettingsHandler(s *incomingSettings) error {
if err := l.applySettings(s.ss); err != nil {
return err
}
return l.framer.fr.WriteSettingsAck()
}
func (l *loopyWriter) registerStreamHandler(h *registerStream) error {
str := &outStream{
id: h.streamID,
state: empty,
itl: &itemList{},
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 {
warningf("transport: loopy doesn't recognize the stream: %d", h.streamID)
return nil
}
// Case 1.A: Server is responding back with headers.
if !h.endStream {
return l.writeHeader(h.streamID, h.endStream, h.hf, h.onWrite)
}
// else: Case 1.B: Server wants to close stream.
if str.state != empty { // either active or waiting on stream quota.
// add it str's list of items.
str.itl.enqueue(h)
return nil
}
if err := l.writeHeader(h.streamID, h.endStream, h.hf, h.onWrite); err != nil {
return err
}
return l.cleanupStreamHandler(h.cleanup)
}
// Case 2: Client wants to originate stream.
str := &outStream{
id: h.streamID,
state: empty,
itl: &itemList{},
wq: h.wq,
}
str.itl.enqueue(h)
return l.originateStream(str)
}
func (l *loopyWriter) originateStream(str *outStream) error {
hdr := str.itl.dequeue().(*headerFrame)
sendPing, err := hdr.initStream(str.id)
if err != nil {
if err == ErrConnClosing {
return err
}
// Other errors(errStreamDrain) need not close transport.
return nil
}
if err = l.writeHeader(str.id, hdr.endStream, hdr.hf, hdr.onWrite); err != nil {
return err
}
l.estdStreams[str.id] = str
if sendPing {
return l.pingHandler(&ping{data: [8]byte{}})
}
return nil
}
func (l *loopyWriter) writeHeader(streamID uint32, endStream bool, hf []hpack.HeaderField, onWrite func()) error {
if onWrite != nil {
onWrite()
}
l.hBuf.Reset()
for _, f := range hf {
if err := l.hEnc.WriteField(f); err != nil {
warningf("transport: loopyWriter.writeHeader encountered error while encoding headers:", err)
}
}
var (
err error
endHeaders, first bool
)
first = true
for !endHeaders {
size := l.hBuf.Len()
if size > http2MaxFrameLen {
size = http2MaxFrameLen
} else {
endHeaders = true
}
if first {
first = false
err = l.framer.fr.WriteHeaders(http2.HeadersFrameParam{
StreamID: streamID,
BlockFragment: l.hBuf.Next(size),
EndStream: endStream,
EndHeaders: endHeaders,
})
} else {
err = l.framer.fr.WriteContinuation(
streamID,
endHeaders,
l.hBuf.Next(size),
)
}
if err != nil {
return err
}
}
return nil
}
func (l *loopyWriter) preprocessData(df *dataFrame) error {
str, ok := l.estdStreams[df.streamID]
if !ok {
return nil
}
// If we got data for a stream it means that
// stream was originated and the headers were sent out.
str.itl.enqueue(df)
if str.state == empty {
str.state = active
l.activeStreams.enqueue(str)
}
return nil
}
func (l *loopyWriter) pingHandler(p *ping) error {
if !p.ack {
l.bdpEst.timesnap(p.data)
}
return l.framer.fr.WritePing(p.ack, p.data)
}
func (l *loopyWriter) outFlowControlSizeRequestHandler(o *outFlowControlSizeRequest) error {
o.resp <- l.sendQuota
return nil
}
func (l *loopyWriter) cleanupStreamHandler(c *cleanupStream) error {
c.onWrite()
if str, ok := l.estdStreams[c.streamID]; ok {
// On the server side it could be a trailers-only response or
// a RST_STREAM before stream initialization thus the stream might
// not be established yet.
delete(l.estdStreams, c.streamID)
str.deleteSelf()
}
if c.rst { // If RST_STREAM needs to be sent.
if err := l.framer.fr.WriteRSTStream(c.streamID, c.rstCode); err != nil {
return err
}
}
if l.side == clientSide && l.draining && len(l.estdStreams) == 0 {
return ErrConnClosing
}
return nil
}
func (l *loopyWriter) incomingGoAwayHandler(*incomingGoAway) error {
if l.side == clientSide {
l.draining = true
if len(l.estdStreams) == 0 {
return ErrConnClosing
}
}
return nil
}
func (l *loopyWriter) goAwayHandler(g *goAway) error {
// Handling of outgoing GoAway is very specific to side.
if l.ssGoAwayHandler != nil {
draining, err := l.ssGoAwayHandler(g)
if err != nil {
return err
}
l.draining = draining
}
return nil
}
func (l *loopyWriter) handle(i interface{}) error {
switch i := i.(type) {
case *incomingWindowUpdate:
return l.incomingWindowUpdateHandler(i)
case *outgoingWindowUpdate:
return l.outgoingWindowUpdateHandler(i)
case *incomingSettings:
return l.incomingSettingsHandler(i)
case *outgoingSettings:
return l.outgoingSettingsHandler(i)
case *headerFrame:
return l.headerHandler(i)
case *registerStream:
return l.registerStreamHandler(i)
case *cleanupStream:
return l.cleanupStreamHandler(i)
case *incomingGoAway:
return l.incomingGoAwayHandler(i)
case *dataFrame:
return l.preprocessData(i)
case *ping:
return l.pingHandler(i)
case *goAway:
return l.goAwayHandler(i)
case *outFlowControlSizeRequest:
return l.outFlowControlSizeRequestHandler(i)
default:
return fmt.Errorf("transport: unknown control message type %T", i)
}
}
func (l *loopyWriter) applySettings(ss []http2.Setting) error {
for _, s := range ss {
switch s.ID {
case http2.SettingInitialWindowSize:
o := l.oiws
l.oiws = s.Val
if o < l.oiws {
// If the new limit is greater make all depleted streams active.
for _, stream := range l.estdStreams {
if stream.state == waitingOnStreamQuota {
stream.state = active
l.activeStreams.enqueue(stream)
}
}
}
case http2.SettingHeaderTableSize:
updateHeaderTblSize(l.hEnc, s.Val)
}
}
return nil
}
func (l *loopyWriter) processData() (bool, error) {
if l.sendQuota == 0 {
return true, nil
}
str := l.activeStreams.dequeue()
if str == nil {
return true, nil
}
dataItem := str.itl.peek().(*dataFrame)
if len(dataItem.h) == 0 && len(dataItem.d) == 0 {
// Client sends out empty data frame with endStream = true
if err := l.framer.fr.WriteData(dataItem.streamID, dataItem.endStream, nil); err != nil {
return false, err
}
str.itl.dequeue()
if str.itl.isEmpty() {
str.state = empty
} else if trailer, ok := str.itl.peek().(*headerFrame); ok { // the next item is trailers.
if err := l.writeHeader(trailer.streamID, trailer.endStream, trailer.hf, trailer.onWrite); err != nil {
return false, err
}
if err := l.cleanupStreamHandler(trailer.cleanup); err != nil {
return false, nil
}
} else {
l.activeStreams.enqueue(str)
}
return false, nil
}
var (
idx int
buf []byte
)
if len(dataItem.h) != 0 { // data header has not been written out yet.
buf = dataItem.h
} else {
idx = 1
buf = dataItem.d
}
size := http2MaxFrameLen
if len(buf) < size {
size = len(buf)
}
if strQuota := int(l.oiws) - str.bytesOutStanding; strQuota <= 0 {
str.state = waitingOnStreamQuota
return false, nil
} else if strQuota < size {
size = strQuota
}
if l.sendQuota < uint32(size) {
size = int(l.sendQuota)
}
// Now that outgoing flow controls are checked we can replenish str's write quota
str.wq.replenish(size)
var endStream bool
// This last data message on this stream and all
// of it can be written in this go.
if dataItem.endStream && size == len(buf) {
// buf contains either data or it contains header but data is empty.
if idx == 1 || len(dataItem.d) == 0 {
endStream = true
}
}
if dataItem.onEachWrite != nil {
dataItem.onEachWrite()
}
if err := l.framer.fr.WriteData(dataItem.streamID, endStream, buf[:size]); err != nil {
return false, err
}
buf = buf[size:]
str.bytesOutStanding += size
l.sendQuota -= uint32(size)
if idx == 0 {
dataItem.h = buf
} else {
dataItem.d = buf
}
if len(dataItem.h) == 0 && len(dataItem.d) == 0 { // All the data from that message was written out.
str.itl.dequeue()
}
if str.itl.isEmpty() {
str.state = empty
} else if trailer, ok := str.itl.peek().(*headerFrame); ok { // The next item is trailers.
if err := l.writeHeader(trailer.streamID, trailer.endStream, trailer.hf, trailer.onWrite); err != nil {
return false, err
}
if err := l.cleanupStreamHandler(trailer.cleanup); err != nil {
return false, err
}
} else if int(l.oiws)-str.bytesOutStanding <= 0 { // Ran out of stream quota.
str.state = waitingOnStreamQuota
} else { // Otherwise add it back to the list of active streams.
l.activeStreams.enqueue(str)
}
return false, nil
}

253
vendor/google.golang.org/grpc/transport/control.go → vendor/google.golang.org/grpc/transport/flowcontrol.go generated vendored
View File

@@ -24,9 +24,6 @@ import (
"sync"
"sync/atomic"
"time"
"golang.org/x/net/http2"
"golang.org/x/net/http2/hpack"
)
const (
@@ -36,179 +33,115 @@ const (
initialWindowSize = defaultWindowSize // for an RPC
infinity = time.Duration(math.MaxInt64)
defaultClientKeepaliveTime = infinity
defaultClientKeepaliveTimeout = time.Duration(20 * time.Second)
defaultClientKeepaliveTimeout = 20 * time.Second
defaultMaxStreamsClient = 100
defaultMaxConnectionIdle = infinity
defaultMaxConnectionAge = infinity
defaultMaxConnectionAgeGrace = infinity
defaultServerKeepaliveTime = time.Duration(2 * time.Hour)
defaultServerKeepaliveTimeout = time.Duration(20 * time.Second)
defaultKeepalivePolicyMinTime = time.Duration(5 * time.Minute)
defaultServerKeepaliveTime = 2 * time.Hour
defaultServerKeepaliveTimeout = 20 * time.Second
defaultKeepalivePolicyMinTime = 5 * time.Minute
// max window limit set by HTTP2 Specs.
maxWindowSize = math.MaxInt32
// defaultLocalSendQuota sets is default value for number of data
// defaultWriteQuota is the default value for number of data
// bytes that each stream can schedule before some of it being
// flushed out.
defaultLocalSendQuota = 64 * 1024
defaultWriteQuota = 64 * 1024
)
// The following defines various control items which could flow through
// the control buffer of transport. They represent different aspects of
// control tasks, e.g., flow control, settings, streaming resetting, etc.
type headerFrame struct {
streamID uint32
hf []hpack.HeaderField
endStream bool
// writeQuota is a soft limit on the amount of data a stream can
// schedule before some of it is written out.
type writeQuota struct {
quota int32
// get waits on read from when quota goes less than or equal to zero.
// replenish writes on it when quota goes positive again.
ch chan struct{}
// done is triggered in error case.
done <-chan struct{}
// replenish is called by loopyWriter to give quota back to.
// It is implemented as a field so that it can be updated
// by tests.
replenish func(n int)
}
func (*headerFrame) item() {}
type continuationFrame struct {
streamID uint32
endHeaders bool
headerBlockFragment []byte
}
type dataFrame struct {
streamID uint32
endStream bool
d []byte
f func()
}
func (*dataFrame) item() {}
func (*continuationFrame) item() {}
type windowUpdate struct {
streamID uint32
increment uint32
}
func (*windowUpdate) item() {}
type settings struct {
ack bool
ss []http2.Setting
}
func (*settings) item() {}
type resetStream struct {
streamID uint32
code http2.ErrCode
}
func (*resetStream) item() {}
type goAway struct {
code http2.ErrCode
debugData []byte
headsUp bool
closeConn bool
}
func (*goAway) item() {}
type flushIO struct {
}
func (*flushIO) item() {}
type ping struct {
ack bool
data [8]byte
}
func (*ping) item() {}
// quotaPool is a pool which accumulates the quota and sends it to acquire()
// when it is available.
type quotaPool struct {
c chan int
mu sync.Mutex
version uint32
quota int
}
// newQuotaPool creates a quotaPool which has quota q available to consume.
func newQuotaPool(q int) *quotaPool {
qb := &quotaPool{
c: make(chan int, 1),
func newWriteQuota(sz int32, done <-chan struct{}) *writeQuota {
w := &writeQuota{
quota: sz,
ch: make(chan struct{}, 1),
done: done,
}
if q > 0 {
qb.c <- q
} else {
qb.quota = q
w.replenish = w.realReplenish
return w
}
func (w *writeQuota) get(sz int32) error {
for {
if atomic.LoadInt32(&w.quota) > 0 {
atomic.AddInt32(&w.quota, -sz)
return nil
}
return qb
}
// add cancels the pending quota sent on acquired, incremented by v and sends
// it back on acquire.
func (qb *quotaPool) add(v int) {
qb.mu.Lock()
defer qb.mu.Unlock()
qb.lockedAdd(v)
}
func (qb *quotaPool) lockedAdd(v int) {
select {
case n := <-qb.c:
qb.quota += n
case <-w.ch:
continue
case <-w.done:
return errStreamDone
}
}
}
func (w *writeQuota) realReplenish(n int) {
sz := int32(n)
a := atomic.AddInt32(&w.quota, sz)
b := a - sz
if b <= 0 && a > 0 {
select {
case w.ch <- struct{}{}:
default:
}
qb.quota += v
if qb.quota <= 0 {
return
}
// After the pool has been created, this is the only place that sends on
// the channel. Since mu is held at this point and any quota that was sent
// on the channel has been retrieved, we know that this code will always
// place any positive quota value on the channel.
select {
case qb.c <- qb.quota:
qb.quota = 0
default:
}
}
func (qb *quotaPool) addAndUpdate(v int) {
qb.mu.Lock()
defer qb.mu.Unlock()
qb.lockedAdd(v)
// Update the version only after having added to the quota
// so that if acquireWithVesrion sees the new vesrion it is
// guaranteed to have seen the updated quota.
// Also, still keep this inside of the lock, so that when
// compareAndExecute is processing, this function doesn't
// get executed partially (quota gets updated but the version
// doesn't).
atomic.AddUint32(&(qb.version), 1)
type trInFlow struct {
limit uint32
unacked uint32
effectiveWindowSize uint32
}
func (qb *quotaPool) acquireWithVersion() (<-chan int, uint32) {
return qb.c, atomic.LoadUint32(&(qb.version))
func (f *trInFlow) newLimit(n uint32) uint32 {
d := n - f.limit
f.limit = n
f.updateEffectiveWindowSize()
return d
}
func (qb *quotaPool) compareAndExecute(version uint32, success, failure func()) bool {
qb.mu.Lock()
defer qb.mu.Unlock()
if version == atomic.LoadUint32(&(qb.version)) {
success()
return true
func (f *trInFlow) onData(n uint32) uint32 {
f.unacked += n
if f.unacked >= f.limit/4 {
w := f.unacked
f.unacked = 0
f.updateEffectiveWindowSize()
return w
}
failure()
return false
f.updateEffectiveWindowSize()
return 0
}
// acquire returns the channel on which available quota amounts are sent.
func (qb *quotaPool) acquire() <-chan int {
return qb.c
func (f *trInFlow) reset() uint32 {
w := f.unacked
f.unacked = 0
f.updateEffectiveWindowSize()
return w
}
func (f *trInFlow) updateEffectiveWindowSize() {
atomic.StoreUint32(&f.effectiveWindowSize, f.limit-f.unacked)
}
func (f *trInFlow) getSize() uint32 {
return atomic.LoadUint32(&f.effectiveWindowSize)
}
// TODO(mmukhi): Simplify this code.
// inFlow deals with inbound flow control
type inFlow struct {
mu sync.Mutex
@@ -229,9 +162,9 @@ type inFlow struct {
// It assumes that n is always greater than the old limit.
func (f *inFlow) newLimit(n uint32) uint32 {
f.mu.Lock()
defer f.mu.Unlock()
d := n - f.limit
f.limit = n
f.mu.Unlock()
return d
}
@@ -240,7 +173,6 @@ func (f *inFlow) maybeAdjust(n uint32) uint32 {
n = uint32(math.MaxInt32)
}
f.mu.Lock()
defer f.mu.Unlock()
// estSenderQuota is the receiver's view of the maximum number of bytes the sender
// can send without a window update.
estSenderQuota := int32(f.limit - (f.pendingData + f.pendingUpdate))
@@ -252,7 +184,7 @@ func (f *inFlow) maybeAdjust(n uint32) uint32 {
// for this message. Therefore we must send an update over the limit since there's an active read
// request from the application.
if estUntransmittedData > estSenderQuota {
// Sender's window shouldn't go more than 2^31 - 1 as speecified in the HTTP spec.
// Sender's window shouldn't go more than 2^31 - 1 as specified in the HTTP spec.
if f.limit+n > maxWindowSize {
f.delta = maxWindowSize - f.limit
} else {
@@ -261,19 +193,24 @@ func (f *inFlow) maybeAdjust(n uint32) uint32 {
// is padded; We will fallback on the current available window(at least a 1/4th of the limit).
f.delta = n
}
f.mu.Unlock()
return f.delta
}
f.mu.Unlock()
return 0
}
// onData is invoked when some data frame is received. It updates pendingData.
func (f *inFlow) onData(n uint32) error {
f.mu.Lock()
defer f.mu.Unlock()
f.pendingData += n
if f.pendingData+f.pendingUpdate > f.limit+f.delta {
return fmt.Errorf("received %d-bytes data exceeding the limit %d bytes", f.pendingData+f.pendingUpdate, f.limit)
limit := f.limit
rcvd := f.pendingData + f.pendingUpdate
f.mu.Unlock()
return fmt.Errorf("received %d-bytes data exceeding the limit %d bytes", rcvd, limit)
}
f.mu.Unlock()
return nil
}
@@ -281,8 +218,8 @@ func (f *inFlow) onData(n uint32) error {
// to be sent to the peer.
func (f *inFlow) onRead(n uint32) uint32 {
f.mu.Lock()
defer f.mu.Unlock()
if f.pendingData == 0 {
f.mu.Unlock()
return 0
}
f.pendingData -= n
@@ -297,15 +234,9 @@ func (f *inFlow) onRead(n uint32) uint32 {
if f.pendingUpdate >= f.limit/4 {
wu := f.pendingUpdate
f.pendingUpdate = 0
f.mu.Unlock()
return wu
}
f.mu.Unlock()
return 0
}
func (f *inFlow) resetPendingUpdate() uint32 {
f.mu.Lock()
defer f.mu.Unlock()
n := f.pendingUpdate
f.pendingUpdate = 0
return n
}

51
vendor/google.golang.org/grpc/transport/go16.go generated vendored Normal file
View File

@@ -0,0 +1,51 @@
// +build go1.6,!go1.7
/*
*
* Copyright 2016 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 (
"net"
"net/http"
"google.golang.org/grpc/codes"
"golang.org/x/net/context"
)
// dialContext connects to the address on the named network.
func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address)
}
// ContextErr converts the error from context package into a StreamError.
func ContextErr(err error) StreamError {
switch err {
case context.DeadlineExceeded:
return streamErrorf(codes.DeadlineExceeded, "%v", err)
case context.Canceled:
return streamErrorf(codes.Canceled, "%v", err)
}
return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
}
// contextFromRequest returns a background context.
func contextFromRequest(r *http.Request) context.Context {
return context.Background()
}

52
vendor/google.golang.org/grpc/transport/go17.go generated vendored Normal file
View File

@@ -0,0 +1,52 @@
// +build go1.7
/*
*
* Copyright 2016 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 (
"context"
"net"
"net/http"
"google.golang.org/grpc/codes"
netctx "golang.org/x/net/context"
)
// dialContext connects to the address on the named network.
func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
return (&net.Dialer{}).DialContext(ctx, network, address)
}
// ContextErr converts the error from context package into a StreamError.
func ContextErr(err error) StreamError {
switch err {
case context.DeadlineExceeded, netctx.DeadlineExceeded:
return streamErrorf(codes.DeadlineExceeded, "%v", err)
case context.Canceled, netctx.Canceled:
return streamErrorf(codes.Canceled, "%v", err)
}
return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
}
// contextFromRequest returns a context from the HTTP Request.
func contextFromRequest(r *http.Request) context.Context {
return r.Context()
}

64
vendor/google.golang.org/grpc/transport/handler_server.go generated vendored
View File

@@ -40,20 +40,24 @@ import (
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/peer"
"google.golang.org/grpc/stats"
"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) (ServerTransport, error) {
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")
}
if r.Method != "POST" {
return nil, errors.New("invalid gRPC request method")
}
if !validContentType(r.Header.Get("Content-Type")) {
contentType := r.Header.Get("Content-Type")
// TODO: do we assume contentType is lowercase? we did before
contentSubtype, validContentType := contentSubtype(contentType)
if !validContentType {
return nil, errors.New("invalid gRPC request content-type")
}
if _, ok := w.(http.Flusher); !ok {
@@ -68,6 +72,9 @@ func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request) (ServerTr
req: r,
closedCh: make(chan struct{}),
writes: make(chan func()),
contentType: contentType,
contentSubtype: contentSubtype,
stats: stats,
}
if v := r.Header.Get("grpc-timeout"); v != "" {
@@ -79,19 +86,19 @@ func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request) (ServerTr
st.timeout = to
}
var metakv []string
metakv := []string{"content-type", contentType}
if r.Host != "" {
metakv = append(metakv, ":authority", r.Host)
}
for k, vv := range r.Header {
k = strings.ToLower(k)
if isReservedHeader(k) && !isWhitelistedPseudoHeader(k) {
if isReservedHeader(k) && !isWhitelistedHeader(k) {
continue
}
for _, v := range vv {
v, err := decodeMetadataHeader(k, v)
if err != nil {
return nil, streamErrorf(codes.InvalidArgument, "malformed binary metadata: %v", err)
return nil, streamErrorf(codes.Internal, "malformed binary metadata: %v", err)
}
metakv = append(metakv, k, v)
}
@@ -126,6 +133,14 @@ type serverHandlerTransport struct {
// block concurrent WriteStatus calls
// e.g. grpc/(*serverStream).SendMsg/RecvMsg
writeStatusMu sync.Mutex
// we just mirror the request content-type
contentType string
// we store both contentType and contentSubtype so we don't keep recreating them
// TODO make sure this is consistent across handler_server and http2_server
contentSubtype string
stats stats.Handler
}
func (ht *serverHandlerTransport) Close() error {
@@ -219,6 +234,9 @@ func (ht *serverHandlerTransport) WriteStatus(s *Stream, st *status.Status) erro
})
if err == nil { // transport has not been closed
if ht.stats != nil {
ht.stats.HandleRPC(s.Context(), &stats.OutTrailer{})
}
ht.Close()
close(ht.writes)
}
@@ -235,7 +253,7 @@ func (ht *serverHandlerTransport) writeCommonHeaders(s *Stream) {
h := ht.rw.Header()
h["Date"] = nil // suppress Date to make tests happy; TODO: restore
h.Set("Content-Type", "application/grpc")
h.Set("Content-Type", ht.contentType)
// Predeclare trailers we'll set later in WriteStatus (after the body).
// This is a SHOULD in the HTTP RFC, and the way you add (known)
@@ -263,7 +281,7 @@ func (ht *serverHandlerTransport) Write(s *Stream, hdr []byte, data []byte, opts
}
func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error {
return ht.do(func() {
err := ht.do(func() {
ht.writeCommonHeaders(s)
h := ht.rw.Header()
for k, vv := range md {
@@ -279,17 +297,24 @@ func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error {
ht.rw.WriteHeader(200)
ht.rw.(http.Flusher).Flush()
})
if err == nil {
if ht.stats != nil {
ht.stats.HandleRPC(s.Context(), &stats.OutHeader{})
}
}
return err
}
func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), traceCtx func(context.Context, string) context.Context) {
// With this transport type there will be exactly 1 stream: this HTTP request.
var ctx context.Context
ctx := contextFromRequest(ht.req)
var cancel context.CancelFunc
if ht.timeoutSet {
ctx, cancel = context.WithTimeout(context.Background(), ht.timeout)
ctx, cancel = context.WithTimeout(ctx, ht.timeout)
} else {
ctx, cancel = context.WithCancel(context.Background())
ctx, cancel = context.WithCancel(ctx)
}
// requestOver is closed when either the request's context is done
@@ -320,6 +345,7 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace
st: ht,
method: req.URL.Path,
recvCompress: req.Header.Get("grpc-encoding"),
contentSubtype: ht.contentSubtype,
}
pr := &peer.Peer{
Addr: ht.RemoteAddr(),
@@ -328,10 +354,18 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace
pr.AuthInfo = credentials.TLSInfo{State: *req.TLS}
}
ctx = metadata.NewIncomingContext(ctx, ht.headerMD)
ctx = peer.NewContext(ctx, pr)
s.ctx = newContextWithStream(ctx, s)
s.ctx = peer.NewContext(ctx, pr)
if ht.stats != nil {
s.ctx = ht.stats.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)
}
s.trReader = &transportReader{
reader: &recvBufferReader{ctx: s.ctx, recv: s.buf},
reader: &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf},
windowHandler: func(int) {},
}
@@ -386,6 +420,10 @@ func (ht *serverHandlerTransport) runStream() {
}
}
func (ht *serverHandlerTransport) IncrMsgSent() {}
func (ht *serverHandlerTransport) IncrMsgRecv() {}
func (ht *serverHandlerTransport) Drain() {
panic("Drain() is not implemented")
}

1050
vendor/google.golang.org/grpc/transport/http2_client.go generated vendored
View File

File diff suppressed because it is too large Load Diff

772
vendor/google.golang.org/grpc/transport/http2_server.go generated vendored
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File diff suppressed because it is too large Load Diff

185
vendor/google.golang.org/grpc/transport/http_util.go generated vendored
View File

@@ -23,12 +23,12 @@ import (
"bytes"
"encoding/base64"
"fmt"
"io"
"net"
"net/http"
"strconv"
"strings"
"time"
"unicode/utf8"
"github.com/golang/protobuf/proto"
"golang.org/x/net/http2"
@@ -46,6 +46,12 @@ const (
// http2IOBufSize specifies the buffer size for sending frames.
defaultWriteBufSize = 32 * 1024
defaultReadBufSize = 32 * 1024
// 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.
baseContentType = "application/grpc"
)
var (
@@ -64,7 +70,7 @@ var (
http2.ErrCodeConnect: codes.Internal,
http2.ErrCodeEnhanceYourCalm: codes.ResourceExhausted,
http2.ErrCodeInadequateSecurity: codes.PermissionDenied,
http2.ErrCodeHTTP11Required: codes.FailedPrecondition,
http2.ErrCodeHTTP11Required: codes.Internal,
}
statusCodeConvTab = map[codes.Code]http2.ErrCode{
codes.Internal: http2.ErrCodeInternal,
@@ -114,6 +120,7 @@ type decodeState struct {
mdata map[string][]string
statsTags []byte
statsTrace []byte
contentSubtype string
}
// isReservedHeader checks whether hdr belongs to HTTP2 headers
@@ -125,6 +132,7 @@ func isReservedHeader(hdr string) bool {
}
switch hdr {
case "content-type",
"user-agent",
"grpc-message-type",
"grpc-encoding",
"grpc-message",
@@ -138,28 +146,55 @@ func isReservedHeader(hdr string) bool {
}
}
// isWhitelistedPseudoHeader checks whether hdr belongs to HTTP2 pseudoheaders
// that should be propagated into metadata visible to users.
func isWhitelistedPseudoHeader(hdr string) bool {
// isWhitelistedHeader checks whether hdr should be propagated
// into metadata visible to users.
func isWhitelistedHeader(hdr string) bool {
switch hdr {
case ":authority":
case ":authority", "user-agent":
return true
default:
return false
}
}
func validContentType(t string) bool {
e := "application/grpc"
if !strings.HasPrefix(t, e) {
return false
// contentSubtype returns the content-subtype for the given content-type. The
// given content-type must be a valid content-type that starts with
// "application/grpc". A content-subtype will follow "application/grpc" after a
// "+" or ";". See
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
// more details.
//
// If contentType is not a valid content-type for gRPC, the boolean
// will be false, otherwise true. If content-type == "application/grpc",
// "application/grpc+", or "application/grpc;", the boolean will be true,
// but no content-subtype will be returned.
//
// contentType is assumed to be lowercase already.
func contentSubtype(contentType string) (string, bool) {
if contentType == baseContentType {
return "", true
}
// Support variations on the content-type
// (e.g. "application/grpc+blah", "application/grpc;blah").
if len(t) > len(e) && t[len(e)] != '+' && t[len(e)] != ';' {
return false
if !strings.HasPrefix(contentType, baseContentType) {
return "", false
}
return true
// guaranteed since != baseContentType and has baseContentType prefix
switch contentType[len(baseContentType)] {
case '+', ';':
// this will return true for "application/grpc+" or "application/grpc;"
// which the previous validContentType function tested to be valid, so we
// just say that no content-subtype is specified in this case
return contentType[len(baseContentType)+1:], true
default:
return "", false
}
}
// contentSubtype is assumed to be lowercase
func contentType(contentSubtype string) string {
if contentSubtype == "" {
return baseContentType
}
return baseContentType + "+" + contentSubtype
}
func (d *decodeState) status() *status.Status {
@@ -228,9 +263,9 @@ func (d *decodeState) decodeResponseHeader(frame *http2.MetaHeadersFrame) error
// gRPC status doesn't exist and http status is OK.
// Set rawStatusCode to be unknown and return nil error.
// So that, if the stream has ended this Unknown status
// will be propogated to the user.
// 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 propogated.
// a later trailer, that has StreamEnded flag set, is propagated.
code := int(codes.Unknown)
d.rawStatusCode = &code
return nil
@@ -247,9 +282,16 @@ func (d *decodeState) addMetadata(k, v string) {
func (d *decodeState) processHeaderField(f hpack.HeaderField) error {
switch f.Name {
case "content-type":
if !validContentType(f.Value) {
return streamErrorf(codes.FailedPrecondition, "transport: received the unexpected content-type %q", f.Value)
contentSubtype, validContentType := contentSubtype(f.Value)
if !validContentType {
return streamErrorf(codes.Internal, "transport: received the unexpected content-type %q", f.Value)
}
d.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)
case "grpc-encoding":
d.encoding = f.Value
case "grpc-status":
@@ -299,7 +341,7 @@ func (d *decodeState) processHeaderField(f hpack.HeaderField) error {
d.statsTrace = v
d.addMetadata(f.Name, string(v))
default:
if isReservedHeader(f.Name) && !isWhitelistedPseudoHeader(f.Name) {
if isReservedHeader(f.Name) && !isWhitelistedHeader(f.Name) {
break
}
v, err := decodeMetadataHeader(f.Name, f.Value)
@@ -307,7 +349,7 @@ func (d *decodeState) processHeaderField(f hpack.HeaderField) error {
errorf("Failed to decode metadata header (%q, %q): %v", f.Name, f.Value, err)
return nil
}
d.addMetadata(f.Name, string(v))
d.addMetadata(f.Name, v)
}
return nil
}
@@ -396,16 +438,17 @@ func decodeTimeout(s string) (time.Duration, error) {
const (
spaceByte = ' '
tildaByte = '~'
tildeByte = '~'
percentByte = '%'
)
// encodeGrpcMessage is used to encode status code in header field
// "grpc-message".
// It checks to see if each individual byte in msg is an
// allowable byte, and then either percent encoding or passing it through.
// When percent encoding, the byte is converted into hexadecimal notation
// with a '%' prepended.
// "grpc-message". It does percent encoding and also replaces invalid utf-8
// characters with Unicode replacement character.
//
// It checks to see if each individual byte in msg is an allowable byte, and
// then either percent encoding or passing it through. When percent encoding,
// the byte is converted into hexadecimal notation with a '%' prepended.
func encodeGrpcMessage(msg string) string {
if msg == "" {
return ""
@@ -413,7 +456,7 @@ func encodeGrpcMessage(msg string) string {
lenMsg := len(msg)
for i := 0; i < lenMsg; i++ {
c := msg[i]
if !(c >= spaceByte && c < tildaByte && c != percentByte) {
if !(c >= spaceByte && c <= tildeByte && c != percentByte) {
return encodeGrpcMessageUnchecked(msg)
}
}
@@ -422,14 +465,26 @@ func encodeGrpcMessage(msg string) string {
func encodeGrpcMessageUnchecked(msg string) string {
var buf bytes.Buffer
lenMsg := len(msg)
for i := 0; i < lenMsg; i++ {
c := msg[i]
if c >= spaceByte && c < tildaByte && c != percentByte {
buf.WriteByte(c)
} else {
buf.WriteString(fmt.Sprintf("%%%02X", c))
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))
continue
}
// The for loop is necessary even if size == 1. r could be
// utf8.RuneError.
//
// fmt.Sprintf("%%%02X", utf8.RuneError) gives "%FFFD".
if b >= spaceByte && b <= tildeByte && b != percentByte {
buf.WriteByte(b)
} else {
buf.WriteString(fmt.Sprintf("%%%02X", b))
}
}
msg = msg[size:]
}
return buf.String()
}
@@ -468,19 +523,67 @@ func decodeGrpcMessageUnchecked(msg string) string {
return buf.String()
}
type bufWriter struct {
buf []byte
offset int
batchSize int
conn net.Conn
err error
onFlush func()
}
func newBufWriter(conn net.Conn, batchSize int) *bufWriter {
return &bufWriter{
buf: make([]byte, batchSize*2),
batchSize: batchSize,
conn: conn,
}
}
func (w *bufWriter) Write(b []byte) (n int, err error) {
if w.err != nil {
return 0, w.err
}
for len(b) > 0 {
nn := copy(w.buf[w.offset:], b)
b = b[nn:]
w.offset += nn
n += nn
if w.offset >= w.batchSize {
err = w.Flush()
}
}
return n, err
}
func (w *bufWriter) Flush() error {
if w.err != nil {
return w.err
}
if w.offset == 0 {
return nil
}
if w.onFlush != nil {
w.onFlush()
}
_, w.err = w.conn.Write(w.buf[:w.offset])
w.offset = 0
return w.err
}
type framer struct {
numWriters int32
reader io.Reader
writer *bufio.Writer
writer *bufWriter
fr *http2.Framer
}
func newFramer(conn net.Conn, writeBufferSize, readBufferSize int) *framer {
r := bufio.NewReaderSize(conn, readBufferSize)
w := newBufWriter(conn, writeBufferSize)
f := &framer{
reader: bufio.NewReaderSize(conn, readBufferSize),
writer: bufio.NewWriterSize(conn, writeBufferSize),
writer: w,
fr: http2.NewFramer(w, r),
}
f.fr = http2.NewFramer(f.writer, f.reader)
// Opt-in to Frame reuse API on framer to reduce garbage.
// Frames aren't safe to read from after a subsequent call to ReadFrame.
f.fr.SetReuseFrames()

417
vendor/google.golang.org/grpc/transport/transport.go generated vendored
View File

@@ -17,19 +17,19 @@
*/
// Package transport defines and implements message oriented communication
// channel to complete various transactions (e.g., an RPC).
package transport
// channel to complete various transactions (e.g., an RPC). It is meant for
// grpc-internal usage and is not intended to be imported directly by users.
package transport // externally used as import "google.golang.org/grpc/transport"
import (
stdctx "context"
"errors"
"fmt"
"io"
"net"
"sync"
"time"
"sync/atomic"
"golang.org/x/net/context"
"golang.org/x/net/http2"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/keepalive"
@@ -58,6 +58,7 @@ type recvBuffer struct {
c chan recvMsg
mu sync.Mutex
backlog []recvMsg
err error
}
func newRecvBuffer() *recvBuffer {
@@ -69,6 +70,13 @@ func newRecvBuffer() *recvBuffer {
func (b *recvBuffer) put(r recvMsg) {
b.mu.Lock()
if b.err != nil {
b.mu.Unlock()
// An error had occurred earlier, don't accept more
// data or errors.
return
}
b.err = r.err
if len(b.backlog) == 0 {
select {
case b.c <- r:
@@ -102,11 +110,12 @@ func (b *recvBuffer) get() <-chan recvMsg {
return b.c
}
//
// recvBufferReader implements io.Reader interface to read the data from
// recvBuffer.
type recvBufferReader struct {
ctx context.Context
goAway chan struct{}
ctxDone <-chan struct{} // cache of ctx.Done() (for performance).
recv *recvBuffer
last []byte // Stores the remaining data in the previous calls.
err error
@@ -131,10 +140,8 @@ func (r *recvBufferReader) read(p []byte) (n int, err error) {
return copied, nil
}
select {
case <-r.ctx.Done():
case <-r.ctxDone:
return 0, ContextErr(r.ctx.Err())
case <-r.goAway:
return 0, ErrStreamDrain
case m := <-r.recv.get():
r.recv.load()
if m.err != nil {
@@ -146,61 +153,7 @@ func (r *recvBufferReader) read(p []byte) (n int, err error) {
}
}
// All items in an out of a controlBuffer should be the same type.
type item interface {
item()
}
// controlBuffer is an unbounded channel of item.
type controlBuffer struct {
c chan item
mu sync.Mutex
backlog []item
}
func newControlBuffer() *controlBuffer {
b := &controlBuffer{
c: make(chan item, 1),
}
return b
}
func (b *controlBuffer) put(r item) {
b.mu.Lock()
if len(b.backlog) == 0 {
select {
case b.c <- r:
b.mu.Unlock()
return
default:
}
}
b.backlog = append(b.backlog, r)
b.mu.Unlock()
}
func (b *controlBuffer) load() {
b.mu.Lock()
if len(b.backlog) > 0 {
select {
case b.c <- b.backlog[0]:
b.backlog[0] = nil
b.backlog = b.backlog[1:]
default:
}
}
b.mu.Unlock()
}
// get returns the channel that receives an item in the buffer.
//
// Upon receipt of an item, the caller should call load to send another
// item onto the channel if there is any.
func (b *controlBuffer) get() <-chan item {
return b.c
}
type streamState uint8
type streamState uint32
const (
streamActive streamState = iota
@@ -212,65 +165,92 @@ const (
// Stream represents an RPC in the transport layer.
type Stream struct {
id uint32
// nil for client side Stream.
st ServerTransport
// ctx is the associated context of the stream.
ctx context.Context
// cancel is always nil for client side Stream.
cancel context.CancelFunc
// done is closed when the final status arrives.
done chan struct{}
// goAway is closed when the server sent GoAways signal before this stream was initiated.
goAway chan struct{}
// method records the associated RPC method of the stream.
method string
st ServerTransport // nil for client side Stream
ctx context.Context // the associated context of the stream
cancel context.CancelFunc // always nil for client side Stream
done chan struct{} // closed at the end of stream to unblock writers. On the client side.
ctxDone <-chan struct{} // same as done chan but for server side. Cache of ctx.Done() (for performance)
method string // the associated RPC method of the stream
recvCompress string
sendCompress string
buf *recvBuffer
trReader io.Reader
fc *inFlow
recvQuota uint32
// TODO: Remote this unused variable.
// The accumulated inbound quota pending for window update.
updateQuota uint32
wq *writeQuota
// Callback to state application's intentions to read data. This
// is used to adjust flow control, if need be.
// is used to adjust flow control, if needed.
requestRead func(int)
sendQuotaPool *quotaPool
localSendQuota *quotaPool
// Close headerChan to indicate the end of reception of header metadata.
headerChan chan struct{}
// header caches the received header metadata.
header metadata.MD
// The key-value map of trailer metadata.
trailer metadata.MD
headerChan chan struct{} // closed to indicate the end of header metadata.
headerDone uint32 // set when headerChan is closed. Used to avoid closing headerChan multiple times.
// hdrMu protects header and trailer metadata on the server-side.
hdrMu sync.Mutex
header metadata.MD // the received header metadata.
trailer metadata.MD // the key-value map of trailer metadata.
// On the server-side, headerSent is atomically set to 1 when the headers are sent out.
headerSent uint32
mu sync.RWMutex // guard the following
// headerOK becomes true from the first header is about to send.
headerOk bool
state streamState
// true iff headerChan is closed. Used to avoid closing headerChan
// multiple times.
headerDone bool
// the status error received from the server.
// On client-side it is the status error received from the server.
// On server-side it is unused.
status *status.Status
// rstStream indicates whether a RST_STREAM frame needs to be sent
// to the server to signify that this stream is closing.
rstStream bool
// rstError is the error that needs to be sent along with the RST_STREAM frame.
rstError http2.ErrCode
// bytesSent and bytesReceived indicates whether any bytes have been sent or
// received on this stream.
bytesSent bool
bytesReceived bool
bytesReceived uint32 // indicates whether any bytes have been received on this stream
unprocessed uint32 // set if the server sends a refused stream or GOAWAY including this stream
// contentSubtype is the content-subtype for requests.
// this must be lowercase or the behavior is undefined.
contentSubtype string
}
// isHeaderSent is only valid on the server-side.
func (s *Stream) isHeaderSent() bool {
return atomic.LoadUint32(&s.headerSent) == 1
}
// updateHeaderSent updates headerSent and returns true
// if it was alreay set. It is valid only on server-side.
func (s *Stream) updateHeaderSent() bool {
return atomic.SwapUint32(&s.headerSent, 1) == 1
}
func (s *Stream) swapState(st streamState) streamState {
return streamState(atomic.SwapUint32((*uint32)(&s.state), uint32(st)))
}
func (s *Stream) compareAndSwapState(oldState, newState streamState) bool {
return atomic.CompareAndSwapUint32((*uint32)(&s.state), uint32(oldState), uint32(newState))
}
func (s *Stream) getState() streamState {
return streamState(atomic.LoadUint32((*uint32)(&s.state)))
}
func (s *Stream) waitOnHeader() error {
if s.headerChan == nil {
// On the server headerChan is always nil since a stream originates
// only after having received headers.
return nil
}
select {
case <-s.ctx.Done():
return ContextErr(s.ctx.Err())
case <-s.headerChan:
return nil
}
}
// RecvCompress returns the compression algorithm applied to the inbound
// message. It is empty string if there is no compression applied.
func (s *Stream) RecvCompress() string {
if err := s.waitOnHeader(); err != nil {
return ""
}
return s.recvCompress
}
@@ -285,28 +265,17 @@ func (s *Stream) Done() <-chan struct{} {
return s.done
}
// GoAway returns a channel which is closed when the server sent GoAways signal
// before this stream was initiated.
func (s *Stream) GoAway() <-chan struct{} {
return s.goAway
}
// Header acquires the key-value pairs of header metadata once it
// is available. It blocks until i) the metadata is ready or ii) there is no
// header metadata or iii) the stream is canceled/expired.
func (s *Stream) Header() (metadata.MD, error) {
var err error
select {
case <-s.ctx.Done():
err = ContextErr(s.ctx.Err())
case <-s.goAway:
err = ErrStreamDrain
case <-s.headerChan:
return s.header.Copy(), nil
}
err := s.waitOnHeader()
// Even if the stream is closed, header is returned if available.
select {
case <-s.headerChan:
if s.header == nil {
return nil, nil
}
return s.header.Copy(), nil
default:
}
@@ -316,10 +285,10 @@ func (s *Stream) Header() (metadata.MD, error) {
// Trailer returns the cached trailer metedata. Note that if it is not called
// after the entire stream is done, it could return an empty MD. Client
// side only.
// It can be safely read only after stream has ended that is either read
// or write have returned io.EOF.
func (s *Stream) Trailer() metadata.MD {
s.mu.RLock()
c := s.trailer.Copy()
s.mu.RUnlock()
return c
}
@@ -329,6 +298,15 @@ func (s *Stream) ServerTransport() ServerTransport {
return s.st
}
// ContentSubtype returns the content-subtype for a request. For example, a
// content-subtype of "proto" will result in a content-type of
// "application/grpc+proto". This will always be lowercase. See
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
// more details.
func (s *Stream) ContentSubtype() string {
return s.contentSubtype
}
// Context returns the context of the stream.
func (s *Stream) Context() context.Context {
return s.ctx
@@ -340,36 +318,49 @@ func (s *Stream) Method() string {
}
// Status returns the status received from the server.
// Status can be read safely only after the stream has ended,
// that is, read or write has returned io.EOF.
func (s *Stream) Status() *status.Status {
return s.status
}
// SetHeader sets the header metadata. This can be called multiple times.
// Server side only.
// This should not be called in parallel to other data writes.
func (s *Stream) SetHeader(md metadata.MD) error {
s.mu.Lock()
if s.headerOk || s.state == streamDone {
s.mu.Unlock()
if md.Len() == 0 {
return nil
}
if s.isHeaderSent() || s.getState() == streamDone {
return ErrIllegalHeaderWrite
}
if md.Len() == 0 {
s.mu.Unlock()
return nil
}
s.hdrMu.Lock()
s.header = metadata.Join(s.header, md)
s.mu.Unlock()
s.hdrMu.Unlock()
return nil
}
// SendHeader sends the given header metadata. The given metadata is
// combined with any metadata set by previous calls to SetHeader and
// then written to the transport stream.
func (s *Stream) SendHeader(md metadata.MD) error {
t := s.ServerTransport()
return t.WriteHeader(s, md)
}
// SetTrailer sets the trailer metadata which will be sent with the RPC status
// by the server. This can be called multiple times. Server side only.
// This should not be called parallel to other data writes.
func (s *Stream) SetTrailer(md metadata.MD) error {
if md.Len() == 0 {
return nil
}
s.mu.Lock()
if s.getState() == streamDone {
return ErrIllegalHeaderWrite
}
s.hdrMu.Lock()
s.trailer = metadata.Join(s.trailer, md)
s.mu.Unlock()
s.hdrMu.Unlock()
return nil
}
@@ -409,28 +400,15 @@ func (t *transportReader) Read(p []byte) (n int, err error) {
return
}
// finish sets the stream's state and status, and closes the done channel.
// s.mu must be held by the caller. st must always be non-nil.
func (s *Stream) finish(st *status.Status) {
s.status = st
s.state = streamDone
close(s.done)
}
// BytesSent indicates whether any bytes have been sent on this stream.
func (s *Stream) BytesSent() bool {
s.mu.Lock()
bs := s.bytesSent
s.mu.Unlock()
return bs
}
// BytesReceived indicates whether any bytes have been received on this stream.
func (s *Stream) BytesReceived() bool {
s.mu.Lock()
br := s.bytesReceived
s.mu.Unlock()
return br
return atomic.LoadUint32(&s.bytesReceived) == 1
}
// Unprocessed indicates whether the server did not process this stream --
// i.e. it sent a refused stream or GOAWAY including this stream ID.
func (s *Stream) Unprocessed() bool {
return atomic.LoadUint32(&s.unprocessed) == 1
}
// GoString is implemented by Stream so context.String() won't
@@ -439,21 +417,6 @@ func (s *Stream) GoString() string {
return fmt.Sprintf("<stream: %p, %v>", s, s.method)
}
// The key to save transport.Stream in the context.
type streamKey struct{}
// newContextWithStream creates a new context from ctx and attaches stream
// to it.
func newContextWithStream(ctx context.Context, stream *Stream) context.Context {
return context.WithValue(ctx, streamKey{}, stream)
}
// StreamFromContext returns the stream saved in ctx.
func StreamFromContext(ctx context.Context) (s *Stream, ok bool) {
s, ok = ctx.Value(streamKey{}).(*Stream)
return
}
// state of transport
type transportState int
@@ -475,6 +438,7 @@ type ServerConfig struct {
InitialConnWindowSize int32
WriteBufferSize int
ReadBufferSize int
ChannelzParentID int64
}
// NewServerTransport creates a ServerTransport with conn or non-nil error
@@ -510,18 +474,21 @@ type ConnectOptions struct {
WriteBufferSize int
// 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
}
// TargetInfo contains the information of the target such as network address and metadata.
type TargetInfo struct {
Addr string
Metadata interface{}
Authority string
}
// NewClientTransport establishes the transport with the required ConnectOptions
// and returns it to the caller.
func NewClientTransport(ctx context.Context, target TargetInfo, opts ConnectOptions, timeout time.Duration) (ClientTransport, error) {
return newHTTP2Client(ctx, target, opts, timeout)
func NewClientTransport(connectCtx, ctx context.Context, target TargetInfo, opts ConnectOptions, onSuccess func()) (ClientTransport, error) {
return newHTTP2Client(connectCtx, ctx, target, opts, onSuccess)
}
// Options provides additional hints and information for message
@@ -545,10 +512,6 @@ type CallHdr struct {
// Method specifies the operation to perform.
Method string
// RecvCompress specifies the compression algorithm applied on
// inbound messages.
RecvCompress string
// SendCompress specifies the compression algorithm applied on
// outbound message.
SendCompress string
@@ -563,6 +526,14 @@ type CallHdr struct {
// for performance purposes.
// If it's false, new stream will never be flushed.
Flush bool
// ContentSubtype specifies the content-subtype for a request. For example, a
// content-subtype of "proto" will result in a content-type of
// "application/grpc+proto". The value of ContentSubtype must be all
// lowercase, otherwise the behavior is undefined. See
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests
// for more details.
ContentSubtype string
}
// ClientTransport is the common interface for all gRPC client-side transport
@@ -604,6 +575,12 @@ type ClientTransport interface {
// GetGoAwayReason returns the reason why GoAway frame was received.
GetGoAwayReason() GoAwayReason
// IncrMsgSent increments the number of message sent through this transport.
IncrMsgSent()
// IncrMsgRecv increments the number of message received through this transport.
IncrMsgRecv()
}
// ServerTransport is the common interface for all gRPC server-side transport
@@ -637,6 +614,12 @@ type ServerTransport interface {
// Drain notifies the client this ServerTransport stops accepting new RPCs.
Drain()
// IncrMsgSent increments the number of message sent through this transport.
IncrMsgSent()
// IncrMsgRecv increments the number of message received through this transport.
IncrMsgRecv()
}
// streamErrorf creates an StreamError with the specified error code and description.
@@ -686,9 +669,16 @@ func (e ConnectionError) Origin() error {
var (
// ErrConnClosing indicates that the transport is closing.
ErrConnClosing = connectionErrorf(true, nil, "transport is closing")
// ErrStreamDrain indicates that the stream is rejected by the server because
// the server stops accepting new RPCs.
ErrStreamDrain = streamErrorf(codes.Unavailable, "the server stops accepting new RPCs")
// errStreamDrain indicates that the stream is rejected because the
// connection is draining. This could be caused by goaway or balancer
// removing the address.
errStreamDrain = streamErrorf(codes.Unavailable, "the connection is draining")
// errStreamDone is returned from write at the client side to indiacte application
// layer of an error.
errStreamDone = errors.New("the stream is done")
// StatusGoAway indicates that the server sent a GOAWAY that included this
// stream's ID in unprocessed RPCs.
statusGoAway = status.New(codes.Unavailable, "the stream is rejected because server is draining the connection")
)
// TODO: See if we can replace StreamError with status package errors.
@@ -703,75 +693,16 @@ func (e StreamError) Error() string {
return fmt.Sprintf("stream error: code = %s desc = %q", e.Code, e.Desc)
}
// wait blocks until it can receive from one of the provided contexts or channels
func wait(ctx, tctx context.Context, done, goAway <-chan struct{}, proceed <-chan int) (int, error) {
select {
case <-ctx.Done():
return 0, ContextErr(ctx.Err())
case <-done:
return 0, io.EOF
case <-goAway:
return 0, ErrStreamDrain
case <-tctx.Done():
return 0, ErrConnClosing
case i := <-proceed:
return i, nil
}
}
// ContextErr converts the error from context package into a StreamError.
func ContextErr(err error) StreamError {
switch err {
case context.DeadlineExceeded, stdctx.DeadlineExceeded:
return streamErrorf(codes.DeadlineExceeded, "%v", err)
case context.Canceled, stdctx.Canceled:
return streamErrorf(codes.Canceled, "%v", err)
}
return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err)
}
// GoAwayReason contains the reason for the GoAway frame received.
type GoAwayReason uint8
const (
// Invalid indicates that no GoAway frame is received.
Invalid GoAwayReason = 0
// NoReason is the default value when GoAway frame is received.
NoReason GoAwayReason = 1
// TooManyPings indicates that a GoAway frame with ErrCodeEnhanceYourCalm
// was received and that the debug data said "too_many_pings".
TooManyPings GoAwayReason = 2
// GoAwayInvalid indicates that no GoAway frame is received.
GoAwayInvalid GoAwayReason = 0
// GoAwayNoReason is the default value when GoAway frame is received.
GoAwayNoReason GoAwayReason = 1
// GoAwayTooManyPings indicates that a GoAway frame with
// ErrCodeEnhanceYourCalm was received and that the debug data said
// "too_many_pings".
GoAwayTooManyPings GoAwayReason = 2
)
// loopyWriter is run in a separate go routine. It is the single code path that will
// write data on wire.
func loopyWriter(ctx context.Context, cbuf *controlBuffer, handler func(item) error) {
for {
select {
case i := <-cbuf.get():
cbuf.load()
if err := handler(i); err != nil {
return
}
case <-ctx.Done():
return
}
hasData:
for {
select {
case i := <-cbuf.get():
cbuf.load()
if err := handler(i); err != nil {
return
}
case <-ctx.Done():
return
default:
if err := handler(&flushIO{}); err != nil {
return
}
break hasData
}
}
}
}

22
vendor/google.golang.org/grpc/version.go generated vendored Normal file
View File

@@ -0,0 +1,22 @@
/*
*
* Copyright 2018 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
// Version is the current grpc version.
const Version = "1.13.0"

38
vendor/google.golang.org/grpc/vet.sh generated vendored
View File

@@ -1,5 +1,10 @@
#!/bin/bash
if [[ `uname -a` = *"Darwin"* ]]; then
echo "It seems you are running on Mac. This script does not work on Mac. See https://github.com/grpc/grpc-go/issues/2047"
exit 1
fi
set -ex # Exit on error; debugging enabled.
set -o pipefail # Fail a pipe if any sub-command fails.
@@ -8,12 +13,6 @@ die() {
exit 1
}
# TODO: Remove this check and the mangling below once "context" is imported
# directly.
if git status --porcelain | read; then
die "Uncommitted or untracked files found; commit changes first"
fi
PATH="$GOPATH/bin:$GOROOT/bin:$PATH"
# Check proto in manual runs or cron runs.
@@ -28,8 +27,8 @@ if [ "$1" = "-install" ]; then
github.com/golang/lint/golint \
golang.org/x/tools/cmd/goimports \
honnef.co/go/tools/cmd/staticcheck \
github.com/golang/protobuf/protoc-gen-go \
golang.org/x/tools/cmd/stringer
github.com/client9/misspell/cmd/misspell \
github.com/golang/protobuf/protoc-gen-go
if [[ "$check_proto" = "true" ]]; then
if [[ "$TRAVIS" = "true" ]]; then
PROTOBUF_VERSION=3.3.0
@@ -48,10 +47,18 @@ elif [[ "$#" -ne 0 ]]; then
die "Unknown argument(s): $*"
fi
# TODO: Remove this check and the mangling below once "context" is imported
# directly.
if git status --porcelain | read; then
die "Uncommitted or untracked files found; commit changes first"
fi
git ls-files "*.go" | xargs grep -L "\(Copyright [0-9]\{4,\} gRPC authors\)\|DO NOT EDIT" 2>&1 | tee /dev/stderr | (! read)
git ls-files "*.go" | xargs grep -l '"unsafe"' 2>&1 | (! grep -v '_test.go') | tee /dev/stderr | (! read)
git ls-files "*.go" | xargs grep -l '"math/rand"' 2>&1 | (! grep -v '^examples\|^stress\|grpcrand') | tee /dev/stderr | (! read)
gofmt -s -d -l . 2>&1 | tee /dev/stderr | (! read)
goimports -l . 2>&1 | tee /dev/stderr | (! read)
golint ./... 2>&1 | (grep -vE "(_mock|_string|grpc_lb_v1/doc|\.pb)\.go:" || true) | tee /dev/stderr | (! read)
golint ./... 2>&1 | (grep -vE "(_mock|\.pb)\.go:" || true) | tee /dev/stderr | (! read)
# Undo any edits made by this script.
cleanup() {
@@ -64,7 +71,7 @@ trap cleanup EXIT
git ls-files "*.go" | xargs sed -i 's:"golang.org/x/net/context":"context":'
set +o pipefail
# TODO: Stop filtering pb.go files once golang/protobuf#214 is fixed.
go tool vet -all . 2>&1 | grep -vF '.pb.go:' | tee /dev/stderr | (! read)
go tool vet -all . 2>&1 | grep -vE '(clientconn|transport\/transport_test).go:.*cancel (function|var)' | grep -vF '.pb.go:' | tee /dev/stderr | (! read)
set -o pipefail
git reset --hard HEAD
@@ -75,4 +82,13 @@ if [[ "$check_proto" = "true" ]]; then
fi
# TODO(menghanl): fix errors in transport_test.
staticcheck -ignore google.golang.org/grpc/transport/transport_test.go:SA2002 ./...
staticcheck -ignore '
google.golang.org/grpc/transport/transport_test.go:SA2002
google.golang.org/grpc/benchmark/benchmain/main.go:SA1019
google.golang.org/grpc/stats/stats_test.go:SA1019
google.golang.org/grpc/test/end2end_test.go:SA1019
google.golang.org/grpc/balancer_test.go:SA1019
google.golang.org/grpc/balancer.go:SA1019
google.golang.org/grpc/clientconn_test.go:SA1019
' ./...
misspell -error .