export grpc conn pool

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

.gitea/workflows/job_lint.yml

@@ -1,29 +0,0 @@
-name: lint
-
-on:
-  pull_request:
-    types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-    - name: setup go
-      uses: actions/setup-go@v5
-      with:
-        cache-dependency-path: "**/*.sum"
-        go-version: 'stable' 
-    - name: setup deps
-      run: go get -v ./...
-    - name: run lint
-      uses: https://github.com/golangci/golangci-lint-action@v6
-      with:
-        version: 'latest'

.gitea/workflows/job_test.yml

@@ -1,34 +0,0 @@
-name: test
-
-on:
-  pull_request:
-    types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
-  push:
-    branches:
-    - master
-    - v3
-    - v4
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-    - name: setup go
-      uses: actions/setup-go@v5
-      with:
-        cache-dependency-path: "**/*.sum"
-        go-version: 'stable'
-    - name: setup deps
-      run: go get -v ./...
-    - name: run test
-      env:
-        INTEGRATION_TESTS: yes
-      run: go test -mod readonly -v ./...

.gitea/workflows/job_tests.yml

@@ -1,53 +0,0 @@
-name: test
-
-on:
-  pull_request:
-    types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
-  push:
-    branches:
-    - master
-    - v3
-    - v4
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - name: checkout code
-      uses: actions/checkout@v4
-      with:
-        filter: 'blob:none'
-    - name: checkout tests
-      uses: actions/checkout@v4
-      with:
-        ref: master
-        filter: 'blob:none'
-        repository: unistack-org/micro-tests
-        path: micro-tests
-    - name: setup go
-      uses: actions/setup-go@v5
-      with:
-        cache-dependency-path: "**/*.sum"
-        go-version: 'stable'
-    - name: setup go work
-      env:
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
-      run: |
-        go work init
-        go work use .
-        go work use micro-tests        
-    - name: setup deps
-      env:
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
-      run: go get -v ./...
-    - name: run tests
-      env:
-        INTEGRATION_TESTS: yes
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
-      run: |
-        cd micro-tests
-        go test -mod readonly -v ./... || true        

.github/dependabot.yml

@@ -0,0 +1,19 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  # Maintain dependencies for Golang
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/autoapprove.yml

@@ -0,0 +1,20 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        uses: hmarr/auto-approve-action@v3
+        if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/automerge.yml

@@ -0,0 +1,21 @@
+name: "automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'vtolstov'
+    steps:
+      - name: merge
+        id: merge
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/build.yml

@@ -0,0 +1,47 @@
+name: build
+on:
+ push:
+    branches:
+    - master
+    - v3
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: cache
+      uses: actions/cache@v3
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: ${{ runner.os }}-go-
+    - name: deps
+      run: go get -v -t -d ./...
+    - name: test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: lint
+        uses: golangci/golangci-lint-action@v3.4.0
+        continue-on-error: true
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.30
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,78 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "codeql"
+
+on:
+  workflow_run:
+    workflows: ["prbuild"]
+    types:
+      - completed
+  push:
+    branches: [ master, v3 ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master, v3 ]
+  schedule:
+    - cron: '34 1 * * 0'
+
+jobs:
+  analyze:
+    name: analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'go' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
+    # Initializes the CodeQL tools for scanning.
+    - name: init
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: analyze
+      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,27 @@
+name: "dependabot-automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.3.6
+        with:
+          github-token: "${{ secrets.TOKEN }}"
+      - name: merge
+        id: merge
+        if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/pr.yml

@@ -0,0 +1,47 @@
+name: prbuild
+on:
+  pull_request:
+    branches:
+    - master
+    - v3
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: cache
+      uses: actions/cache@v3
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: ${{ runner.os }}-go-
+    - name: deps
+      run: go get -v -t -d ./...
+    - name: test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: lint
+        uses: golangci/golangci-lint-action@v3.4.0
+        continue-on-error: true
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.30
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true

.gitignore

@@ -1,24 +0,0 @@
-# Binaries for programs and plugins
-*.exe
-*.exe~
-*.dll
-*.so
-*.dylib
-bin
-
-# Test binary, built with `go test -c`
-*.test
-
-# Output of the go coverage tool, specifically when used with LiteIDE
-*.out
-
-# Dependency directories (remove the comment below to include it)
-# vendor/
-
-# Go workspace file
-go.work
-
-# General
-.DS_Store
-.idea
-.vscode

.golangci.yml

@@ -1,5 +1,44 @@
 run:
-  concurrency: 8
+  concurrency: 4
   deadline: 5m
   issues-exit-code: 1
   tests: true
+
+linters-settings:
+  govet:
+    check-shadowing: true
+    enable:
+      - fieldalignment
+
+linters:
+  enable:
+    - govet
+    - deadcode
+    - errcheck
+    - govet
+    - ineffassign
+    - staticcheck
+    - structcheck
+    - typecheck
+    - unused
+    - varcheck
+    - bodyclose
+    - gci
+    - goconst
+    - gocritic
+    - gosimple
+    - gofmt
+    - gofumpt
+    - goimports
+    - golint
+    - gosec
+    - makezero
+    - misspell
+    - nakedret
+    - nestif
+    - nilerr
+    - noctx
+    - prealloc
+    - unconvert
+    - unparam
+  disable-all: false

go.mod

@@ -1,8 +1,17 @@
 module go.unistack.org/micro-client-grpc/v3
 
-go 1.16
+go 1.20
 
 require (
-	go.unistack.org/micro/v3 v3.10.22
-	google.golang.org/grpc v1.52.3
+	go.unistack.org/micro/v3 v3.10.28
+	google.golang.org/grpc v1.59.0
+)
+
+require (
+	github.com/golang/protobuf v1.5.3 // indirect
+	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231016165738-49dd2c1f3d0b // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
 )

grpc.go

@@ -98,7 +98,6 @@ func (g *grpcClient) call(ctx context.Context, addr string, req client.Request,
 
 	maxRecvMsgSize := g.maxRecvMsgSizeValue()
 	maxSendMsgSize := g.maxSendMsgSizeValue()
-	cfgService := g.serviceConfig()
 
 	var grr error
 
@@ -117,9 +116,11 @@ func (g *grpcClient) call(ctx context.Context, addr string, req client.Request,
 			grpc.MaxCallRecvMsgSize(maxRecvMsgSize),
 			grpc.MaxCallSendMsgSize(maxSendMsgSize),
 		),
-		grpc.WithDefaultServiceConfig(cfgService),
 	}
 
+	if opts := g.getGrpcDialOptions(g.opts.Context); opts != nil {
+		grpcDialOptions = append(grpcDialOptions, opts...)
+	}
 	if opts := g.getGrpcDialOptions(opts.Context); opts != nil {
 		grpcDialOptions = append(grpcDialOptions, opts...)
 	}
@@ -220,7 +221,6 @@ func (g *grpcClient) stream(ctx context.Context, addr string, req client.Request
 
 	maxRecvMsgSize := g.maxRecvMsgSizeValue()
 	maxSendMsgSize := g.maxSendMsgSizeValue()
-	cfgService := g.serviceConfig()
 
 	grpcDialOptions := []grpc.DialOption{
 		g.secure(addr),
@@ -228,7 +228,6 @@ func (g *grpcClient) stream(ctx context.Context, addr string, req client.Request
 			grpc.MaxCallRecvMsgSize(maxRecvMsgSize),
 			grpc.MaxCallSendMsgSize(maxSendMsgSize),
 		),
-		grpc.WithDefaultServiceConfig(cfgService),
 	}
 
 	if opts := g.getGrpcDialOptions(opts.Context); opts != nil {
@@ -373,17 +372,6 @@ func (g *grpcClient) newCodec(ct string) (codec.Codec, error) {
 	return nil, codec.ErrUnknownContentType
 }
 
-func (g *grpcClient) serviceConfig() string {
-	if g.opts.Context == nil {
-		return DefaultServiceConfig
-	}
-	v := g.opts.Context.Value(serviceConfigKey{})
-	if v == nil {
-		return DefaultServiceConfig
-	}
-	return v.(string)
-}
-
 func (g *grpcClient) Init(opts ...client.Option) error {
 	if len(opts) == 0 && g.init {
 		return nil
@@ -730,6 +718,10 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 	if v, ok := os.LookupEnv("MICRO_PROXY"); ok {
 		exchange = v
 	}
+	// get the exchange
+	if len(options.Exchange) > 0 {
+		exchange = options.Exchange
+	}
 
 	msgs := make([]*broker.Message, 0, len(ps))
 
@@ -741,6 +733,16 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 	for _, p := range ps {
 		md := metadata.Copy(omd)
 		md[metadata.HeaderContentType] = p.ContentType()
+		topic := p.Topic()
+		if len(exchange) > 0 {
+			topic = exchange
+		}
+		md.Set(metadata.HeaderTopic, topic)
+		iter := p.Metadata().Iterator()
+		var k, v string
+		for iter.Next(&k, &v) {
+			md.Set(k, v)
+		}
 
 		// passed in raw data
 		if d, ok := p.Payload().(*codec.Frame); ok {
@@ -759,15 +761,6 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 			body = b
 		}
 
-		topic := p.Topic()
-		if len(exchange) > 0 {
-			topic = exchange
-		}
-
-		for k, v := range p.Metadata() {
-			md.Set(k, v)
-		}
-		md.Set(metadata.HeaderTopic, topic)
 		msgs = append(msgs, &broker.Message{Header: md, Body: body})
 	}
 
@@ -841,6 +834,7 @@ func NewClient(opts ...client.Option) client.Client {
 	}
 
 	rc.pool = NewConnPool(options.PoolSize, options.PoolTTL, rc.poolMaxIdle(), rc.poolMaxStreams())
+
 	c := client.Client(rc)
 
 	// wrap in reverse

grpc_pool.go

@@ -21,22 +21,22 @@ type ConnPool struct {
 
 type streamsPool struct {
 	//  head of list
-	head *PoolConn
+	head *poolConn
 	//  busy conns list
-	busy *PoolConn
+	busy *poolConn
 	//  the siza of list
 	count int
 	//  idle conn
 	idle int
 }
 
-type PoolConn struct {
+type poolConn struct {
 	err error
 	*grpc.ClientConn
-	next    *PoolConn
+	next    *poolConn
 	pool    *ConnPool
 	sp      *streamsPool
-	pre     *PoolConn
+	pre     *poolConn
 	addr    string
 	streams int
 	created int64
@@ -59,7 +59,7 @@ func NewConnPool(size int, ttl time.Duration, idle int, ms int) *ConnPool {
 	}
 }
 
-func (p *ConnPool) Get(ctx context.Context, addr string, opts ...grpc.DialOption) (*PoolConn, error) {
+func (p *ConnPool) Get(ctx context.Context, addr string, opts ...grpc.DialOption) (*poolConn, error) {
 	if strings.HasPrefix(addr, "http") {
 		addr = addr[strings.Index(addr, ":")+3:]
 	}
@@ -67,7 +67,7 @@ func (p *ConnPool) Get(ctx context.Context, addr string, opts ...grpc.DialOption
 	p.Lock()
 	sp, ok := p.conns[addr]
 	if !ok {
-		sp = &streamsPool{head: &PoolConn{}, busy: &PoolConn{}, count: 0, idle: 0}
+		sp = &streamsPool{head: &poolConn{}, busy: &poolConn{}, count: 0, idle: 0}
 		p.conns[addr] = sp
 	}
 	//  while we have conns check streams and then return one
@@ -135,7 +135,7 @@ func (p *ConnPool) Get(ctx context.Context, addr string, opts ...grpc.DialOption
 	if err != nil {
 		return nil, err
 	}
-	conn = &PoolConn{ClientConn: cc, err: nil, addr: addr, pool: p, sp: sp, streams: 1, created: time.Now().Unix(), pre: nil, next: nil, in: false}
+	conn = &poolConn{ClientConn: cc, err: nil, addr: addr, pool: p, sp: sp, streams: 1, created: time.Now().Unix(), pre: nil, next: nil, in: false}
 
 	//  add conn to streams pool
 	p.Lock()
@@ -147,7 +147,7 @@ func (p *ConnPool) Get(ctx context.Context, addr string, opts ...grpc.DialOption
 	return conn, nil
 }
 
-func (p *ConnPool) Put(conn *PoolConn, err error) {
+func (p *ConnPool) Put(conn *poolConn, err error) {
 	p.Lock()
 	p, sp, created := conn.pool, conn.sp, conn.created
 	//  try to add conn
@@ -182,11 +182,11 @@ func (p *ConnPool) Put(conn *PoolConn, err error) {
 	p.Unlock()
 }
 
-func (conn *PoolConn) Close() {
+func (conn *poolConn) Close() {
 	conn.pool.Put(conn, conn.err)
 }
 
-func removeConn(conn *PoolConn) {
+func removeConn(conn *poolConn) {
 	if conn.pre != nil {
 		conn.pre.next = conn.next
 	}
@@ -199,7 +199,7 @@ func removeConn(conn *PoolConn) {
 	conn.sp.count--
 }
 
-func addConnAfter(conn *PoolConn, after *PoolConn) {
+func addConnAfter(conn *poolConn, after *poolConn) {
 	conn.next = after.next
 	conn.pre = after
 	if after.next != nil {

options.go

@@ -10,7 +10,7 @@ import (
 )
 
 var (
-	// DefaultPoolMaxStreams maximum streams on a connection
+	// DefaultPoolMaxStreams maximum streams on a connectioin
 	// (20)
 	DefaultPoolMaxStreams = 20
 
@@ -25,9 +25,6 @@ var (
 	// DefaultMaxSendMsgSize maximum message that client can send
 	// (4 MB).
 	DefaultMaxSendMsgSize = 1024 * 1024 * 4
-
-	// DefaultServiceConfig enable load balancing
-	DefaultServiceConfig = `{"loadBalancingPolicy":"round_robin"}`
 )
 
 type poolMaxStreams struct{}
@@ -98,8 +95,8 @@ func MaxSendMsgSize(s int) client.Option {
 type grpcDialOptions struct{}
 
 // DialOptions to be used to configure gRPC dial options
-func DialOptions(opts ...grpc.DialOption) client.CallOption {
-	return func(o *client.CallOptions) {
+func DialOptions(opts ...grpc.DialOption) client.Option {
+	return func(o *client.Options) {
 		if o.Context == nil {
 			o.Context = context.Background()
 		}
@@ -118,14 +115,3 @@ func CallOptions(opts ...grpc.CallOption) client.CallOption {
 		o.Context = context.WithValue(o.Context, grpcCallOptions{}, opts)
 	}
 }
-
-type serviceConfigKey struct{}
-
-func ServiceConfig(str string) client.CallOption {
-	return func(options *client.CallOptions) {
-		if options.Context == nil {
-			options.Context = context.Background()
-		}
-		options.Context = context.WithValue(options.Context, serviceConfigKey{}, str)
-	}
-}

response.go

@@ -9,7 +9,7 @@ import (
 )
 
 type response struct {
-	conn   *PoolConn
+	conn   *poolConn
 	stream grpc.ClientStream
 	codec  codec.Codec
 }

stream.go

@@ -17,7 +17,7 @@ type grpcStream struct {
 	request  client.Request
 	response client.Response
 	close    func(err error)
-	conn     *PoolConn
+	conn     *poolConn
 	sync.RWMutex
 	closed bool
 }