.github/workflows/autoapprove.yml

@@ -1,20 +0,0 @@
-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

@@ -1,21 +0,0 @@
-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

@@ -3,20 +3,19 @@ on:
  push:
     branches:
     - master
-    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v2
       with:
-        go-version: 1.17
+        go-version: 1.16
     - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2
     - name: cache
-      uses: actions/cache@v3
+      uses: actions/cache@v2
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -32,9 +31,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
       - name: lint
-        uses: golangci/golangci-lint-action@v3.4.0
+        uses: golangci/golangci-lint-action@v2
         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.

.github/workflows/codeql-analysis.yml

@@ -9,7 +9,7 @@
 # the `language` matrix defined below to confirm you have the correct set of
 # supported CodeQL languages.
 #
-name: "codeql"
+name: "CodeQL"
 
 on:
   workflow_run:
@@ -17,16 +17,16 @@ on:
     types:
       - completed
   push:
-    branches: [ master, v3 ]
+    branches: [ master ]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ master, v3 ]
+    branches: [ master ]
   schedule:
     - cron: '34 1 * * 0'
 
 jobs:
   analyze:
-    name: analyze
+    name: Analyze
     runs-on: ubuntu-latest
     permissions:
       actions: read
@@ -42,15 +42,12 @@ jobs:
         # 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
+    - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2
-    - name: setup
+
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.17
     # Initializes the CodeQL tools for scanning.
-    - name: init
+    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@v1
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -60,8 +57,8 @@ jobs:
 
     # 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
+    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@v1
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -74,5 +71,5 @@ jobs:
     #   make bootstrap
     #   make release
 
-    - name: analyze
+    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@v1

.github/workflows/dependabot-automerge.yml

@@ -1,27 +1,66 @@
-name: "dependabot-automerge"
+name: "prautomerge"
 
 on:
-  pull_request_target:
+  workflow_run:
-    types: [assigned, opened, synchronize, reopened]
+    workflows: ["prbuild"]
+    types:
+      - completed
 
 permissions:
-  pull-requests: write
   contents: write
+  pull-requests: write
 
 jobs:
-  automerge:
+  Dependabot-Automerge:
     runs-on: ubuntu-latest
-    if: github.actor == 'dependabot[bot]'
+    # Contains workaround to execute if dependabot updates the PR by checking for the base branch in the linked PR
+    # The the github.event.workflow_run.event value is 'push' and not 'pull_request'
+    # dont work with multiple workflows when last returns success
+    if: >-
+      github.event.workflow_run.conclusion == 'success'
+      && github.actor == 'dependabot[bot]'
+      && github.event.sender.login == 'dependabot[bot]'
+      && github.event.sender.type == 'Bot'
+      && (github.event.workflow_run.event == 'pull_request'
+          || (github.event.workflow_run.event == 'push' && github.event.workflow_run.pull_requests[0].base.ref == github.event.repository.default_branch ))
     steps:
-      - name: metadata
+      - name: Approve Changes and Merge changes if label 'dependencies' is set
-        id: metadata
+        uses: actions/github-script@v5
-        uses: dependabot/fetch-metadata@v1.3.6
         with:
-          github-token: "${{ secrets.TOKEN }}"
+          github-token: ${{ secrets.GITHUB_TOKEN }}
-      - name: merge
+          script: |
-        id: merge
+            console.log(context.payload.workflow_run);
-        if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
+            
-        run: gh pr merge --auto --merge "$PR_URL"
+            var labelNames = await github.paginate(
-        env:
+              github.issues.listLabelsOnIssue,
-          PR_URL: ${{github.event.pull_request.html_url}}
+              {
-          GITHUB_TOKEN: ${{secrets.TOKEN}}
+                repo: context.repo.repo,
+                owner: context.repo.owner,
+                issue_number: context.payload.workflow_run.pull_requests[0].number,
+              },
+              (response) => response.data.map(
+                (label) => label.name
+              )
+            );
+
+            console.log(labelNames);
+
+            if (labelNames.includes('dependencies')) {
+              console.log('Found label');
+
+              await github.pulls.createReview({
+                repo: context.repo.repo,
+                owner: context.repo.owner,
+                pull_number: context.payload.workflow_run.pull_requests[0].number,
+                event: 'APPROVE'
+              });
+              console.log('Approved PR');
+
+              await github.pulls.merge({
+                repo: context.repo.repo,
+                owner: context.repo.owner,
+                pull_number: context.payload.workflow_run.pull_requests[0].number,
+              });
+
+              console.log('Merged PR');
+            }

.github/workflows/pr.yml

@@ -3,20 +3,19 @@ on:
   pull_request:
     branches:
     - master
-    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v2
       with:
-        go-version: 1.17
+        go-version: 1.16
     - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2
     - name: cache
-      uses: actions/cache@v3
+      uses: actions/cache@v2
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -32,9 +31,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
       - name: lint
-        uses: golangci/golangci-lint-action@v3.4.0
+        uses: golangci/golangci-lint-action@v2
         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.

.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

codec.go

@@ -1,6 +1,8 @@
 package grpc
 
 import (
+	"io"
+
 	"go.unistack.org/micro/v3/codec"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/encoding"
@@ -63,3 +65,63 @@ func (w *wrapGrpcCodec) Unmarshal(d []byte, v interface{}, opts ...codec.Option)
 	}
 	return w.Codec.Unmarshal(d, v)
 }
+
+/*
+type grpcCodec struct {
+	grpc.ServerStream
+	// headers
+	id       string
+	target   string
+	method   string
+	endpoint string
+
+	c encoding.Codec
+}
+
+*/
+
+func (w *wrapGrpcCodec) ReadHeader(conn io.Reader, m *codec.Message, mt codec.MessageType) error {
+	/*
+		if m == nil {
+			m = codec.NewMessage(codec.Request)
+		}
+
+		if md, ok := metadata.FromIncomingContext(g.ServerStream.Context()); ok {
+			if m.Header == nil {
+				m.Header = meta.New(len(md))
+			}
+			for k, v := range md {
+				m.Header[k] = strings.Join(v, ",")
+			}
+		}
+
+		m.Id = g.id
+		m.Target = g.target
+		m.Method = g.method
+		m.Endpoint = g.endpoint
+	*/
+	return nil
+}
+
+func (w *wrapGrpcCodec) ReadBody(conn io.Reader, v interface{}) error {
+	// caller has requested a frame
+	if m, ok := v.(*codec.Frame); ok {
+		_, err := conn.Read(m.Data)
+		return err
+	}
+	return codec.ErrInvalidMessage
+}
+
+func (w *wrapGrpcCodec) Write(conn io.Writer, m *codec.Message, v interface{}) error {
+	// if we don't have a body
+	if v != nil {
+		b, err := w.Marshal(v)
+		if err != nil {
+			return err
+		}
+		m.Body = b
+	}
+	// write the body using the framing codec
+	_, err := conn.Write(m.Body)
+	return err
+}

error.go

@@ -9,46 +9,36 @@ func microError(err error) error {
 	// no error
 
 	if err == nil {
-		// nothing to do
 		return nil
 	}
 
 	if verr, ok := err.(*errors.Error); ok {
-		// micro error
 		return verr
 	}
 
 	// grpc error
 	s, ok := status.FromError(err)
 	if !ok {
-		// can't get status detals from grpc error, return base error
 		return err
 	}
 
-	details := s.Details()
+	// return first error from details
-	switch len(details) {
+	if details := s.Details(); len(details) > 0 {
-	case 0:
+		if verr, ok := details[0].(error); ok {
-		if verr := errors.Parse(s.Message()); verr.Code > 0 {
+			return microError(verr)
-			// return micro error
-			return verr
 		}
-		// return base error as it not micro error
-		return err
-	case 1:
-		if verr, ok := details[0].(*errors.Error); ok {
-			// return nested micro error
-			return verr
-		}
-		// return base error as it not holds micro error
-		return err
 	}
 
-	// attached messages in details more then 1, try to fallback to micro error
+	// try to decode micro *errors.Error
-	if verr := errors.Parse(s.Message()); verr.Code > 0 {
+	if e := errors.Parse(s.Message()); e.Code > 0 {
-		// return micro error
+		return e // actually a micro error
-		return verr
 	}
 
-	// not micro error return base error
+	// fallback
-	return err
+	return &errors.Error{
+		ID:     "go.micro.client",
+		Code:   int32(s.Code()),
+		Detail: s.Message(),
+		Status: s.Code().String(),
+	}
 }

go.mod

@@ -1,19 +1,10 @@
 module go.unistack.org/micro-client-grpc/v3
 
-go 1.21
+go 1.16
-
-toolchain go1.23.1
 
 require (
-	go.unistack.org/micro/v3 v3.10.91
+	go.unistack.org/micro/v3 v3.8.5
-	google.golang.org/grpc v1.67.0
+	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
-)
+	google.golang.org/genproto v0.0.0-20210729151513-df9385d47c1b // indirect
-
+	google.golang.org/grpc v1.40.0
-require (
-	go.unistack.org/micro-proto/v3 v3.4.1 // indirect
-	golang.org/x/net v0.29.0 // indirect
-	golang.org/x/sys v0.25.0 // indirect
-	golang.org/x/text v0.18.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
 )

go.sum

@@ -1,18 +1,154 @@
-github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-go.unistack.org/micro-proto/v3 v3.4.1 h1:UTjLSRz2YZuaHk9iSlVqqsA50JQNAEK2ZFboGqtEa9Q=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-go.unistack.org/micro-proto/v3 v3.4.1/go.mod h1:okx/cnOhzuCX0ggl/vToatbCupi0O44diiiLLsZ93Zo=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-go.unistack.org/micro/v3 v3.10.91 h1:vuJY4tXwpqimwIkEJ3TozMYNVQQs+C5QMlQWPgSY/YM=
+github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-go.unistack.org/micro/v3 v3.10.91/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
-golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
-golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-golang.org/x/text v0.18.0 h1:XvMDiNzPAl0jr17s6W9lcaIhGUfUORdGCNsuLmPG224=
+github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
-golang.org/x/text v0.18.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 h1:pPJltXNxVzT4pK9yD8vR9X75DaWYYmLGMsEvBfFQZzQ=
+github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-google.golang.org/grpc v1.67.0 h1:IdH9y6PF5MPSdAntIcpjQ+tXO41pcQsfZV2RxtQgVcw=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-google.golang.org/grpc v1.67.0/go.mod h1:1gLDyUQU7CTLJI90u3nXZ9ekeghjeM7pTDZlqFNg2AA=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
-google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/golang-jwt/jwt/v4 v4.1.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
+github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
+github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
+github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
+github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
+github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
+github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
+github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
+github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
+github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
+github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
+go.unistack.org/micro-proto/v3 v3.1.0 h1:q39FwjFiRZn+Ux/tt+d3bJTmDtsQQWa+3SLYVo1vLfA=
+go.unistack.org/micro-proto/v3 v3.1.0/go.mod h1:DpRhYCBXlmSJ/AAXTmntvlh7kQkYU6eFvlmYAx4BQS8=
+go.unistack.org/micro/v3 v3.8.5 h1:DIYWRsQF+NPhKZP45sCtNsUhaRw6u2+Ps7U+pKU7i3s=
+go.unistack.org/micro/v3 v3.8.5/go.mod h1:KMMmOmbgo/D52/rCAbqeKbBsgEEbSKM69he54J3ZIuA=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
+golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
+golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
+golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b h1:eB48h3HiRycXNy8E0Gf5e0hv7YT6Kt14L/D73G1fuwo=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
+golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20210729151513-df9385d47c1b h1:4xoALQmXxqVdDdLimpPyPeDdsJzo+nFTJw9euAMpqgM=
+google.golang.org/genproto v0.0.0-20210729151513-df9385d47c1b/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
+google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
+google.golang.org/grpc v1.40.0 h1:AGJ0Ih4mHjSeibYkFGh1dD9KJ/eOtZ93I6hoHhukQ5Q=
+google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

grpc.go

@@ -1,5 +1,5 @@
-// Package grpc provides a gRPC client for micro framework
+// Package grpc provides a gRPC client
-package grpc
+package grpc // import "go.unistack.org/micro-client-grpc/v3"
 
 import (
 	"context"
@@ -8,7 +8,6 @@ import (
 	"net"
 	"os"
 	"reflect"
-	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -18,29 +17,18 @@ import (
 	"go.unistack.org/micro/v3/codec"
 	"go.unistack.org/micro/v3/errors"
 	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/options"
-	"go.unistack.org/micro/v3/selector"
-	"go.unistack.org/micro/v3/semconv"
-	"go.unistack.org/micro/v3/tracer"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/encoding"
 	gmetadata "google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/status"
 )
 
 const (
-	DefaultContentType = "application/grpc"
+	defaultContentType = "application/grpc+proto"
 )
 
 type grpcClient struct {
-	funcPublish      client.FuncPublish
+	pool *pool
-	funcBatchPublish client.FuncBatchPublish
-	funcCall         client.FuncCall
-	funcStream       client.FuncStream
-	pool             *ConnPool
 	opts client.Options
 	sync.RWMutex
 	init bool
@@ -74,7 +62,7 @@ func (g *grpcClient) secure(addr string) grpc.DialOption {
 	}
 
 	// other fallback to insecure
-	return grpc.WithTransportCredentials(insecure.NewCredentials())
+	return grpc.WithInsecure()
 }
 
 func (g *grpcClient) call(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error {
@@ -88,15 +76,9 @@ func (g *grpcClient) call(ctx context.Context, addr string, req client.Request,
 	} else {
 		header = make(map[string]string, 2)
 	}
-	if opts.RequestMetadata != nil {
+
-		for k, v := range opts.RequestMetadata {
-			header[k] = v
-		}
-	}
 	// set timeout in nanoseconds
-	header["Grpc-Timeout"] = fmt.Sprintf("%dn", opts.RequestTimeout)
+	header["timeout"] = fmt.Sprintf("%d", opts.RequestTimeout)
-	header["timeout"] = fmt.Sprintf("%dn", opts.RequestTimeout)
-	header["content-type"] = req.ContentType()
 
 	md := gmetadata.New(header)
 	ctx = gmetadata.NewOutgoingContext(ctx, md)
@@ -108,7 +90,6 @@ func (g *grpcClient) call(ctx context.Context, addr string, req client.Request,
 
 	maxRecvMsgSize := g.maxRecvMsgSizeValue()
 	maxSendMsgSize := g.maxSendMsgSizeValue()
-	cfgService := g.serviceConfig()
 
 	var grr error
 
@@ -127,50 +108,31 @@ 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 {
+	if opts := g.getGrpcDialOptions(); opts != nil {
-		grpcDialOptions = append(grpcDialOptions, opts...)
-	}
-	if opts := g.getGrpcDialOptions(opts.Context); opts != nil {
 		grpcDialOptions = append(grpcDialOptions, opts...)
 	}
 
-	contextDialer := g.opts.ContextDialer
+	cc, err := g.pool.getConn(dialCtx, addr, grpcDialOptions...)
-	if opts.ContextDialer != nil {
-		contextDialer = opts.ContextDialer
-	}
-	if contextDialer != nil {
-		grpcDialOptions = append(grpcDialOptions, grpc.WithContextDialer(contextDialer))
-	}
-
-	cc, err := g.pool.Get(dialCtx, addr, grpcDialOptions...)
 	if err != nil {
 		return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error sending request: %v", err))
 	}
 	defer func() {
 		// defer execution of release
-		g.pool.Put(cc, grr)
+		g.pool.release(cc, grr)
 	}()
 
 	ch := make(chan error, 1)
-	var gmd gmetadata.MD
-
-	grpcCallOptions := []grpc.CallOption{
-		grpc.CallContentSubtype((&wrapMicroCodec{cf}).Name()),
-	}
-
-	if opts := g.getGrpcCallOptions(opts.Context); opts != nil {
-		grpcCallOptions = append(grpcCallOptions, opts...)
-	}
-
-	if opts.ResponseMetadata != nil {
-		gmd = gmetadata.MD{}
-		grpcCallOptions = append(grpcCallOptions, grpc.Header(&gmd))
-	}
 
 	go func() {
+		grpcCallOptions := []grpc.CallOption{
+			grpc.ForceCodec(&wrapMicroCodec{cf}),
+			grpc.CallContentSubtype((&wrapMicroCodec{cf}).Name()),
+		}
+		if opts := g.getGrpcCallOptions(); opts != nil {
+			grpcCallOptions = append(grpcCallOptions, opts...)
+		}
 		err := cc.Invoke(ctx, methodToGRPC(req.Service(), req.Endpoint()), req.Body(), rsp, grpcCallOptions...)
 		ch <- microError(err)
 	}()
@@ -182,13 +144,6 @@ func (g *grpcClient) call(ctx context.Context, addr string, req client.Request,
 		grr = errors.Timeout("go.micro.client", "%v", ctx.Err())
 	}
 
-	if opts.ResponseMetadata != nil {
-		*opts.ResponseMetadata = metadata.New(gmd.Len())
-		for k, v := range gmd {
-			opts.ResponseMetadata.Set(k, strings.Join(v, ","))
-		}
-	}
-
 	return grr
 }
 
@@ -206,11 +161,10 @@ func (g *grpcClient) stream(ctx context.Context, addr string, req client.Request
 
 	// set timeout in nanoseconds
 	if opts.StreamTimeout > time.Duration(0) {
-		header["Grpc-Timeout"] = fmt.Sprintf("%dn", opts.StreamTimeout)
+		header["timeout"] = fmt.Sprintf("%d", opts.StreamTimeout)
-		header["timeout"] = fmt.Sprintf("%dn", opts.StreamTimeout)
 	}
 	// set the content type for the request
-	header["content-type"] = req.ContentType()
+	header["x-content-type"] = req.ContentType()
 
 	md := gmetadata.New(header)
 	ctx = gmetadata.NewOutgoingContext(ctx, md)
@@ -233,7 +187,6 @@ 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),
@@ -241,22 +194,13 @@ 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 {
+	if opts := g.getGrpcDialOptions(); opts != nil {
 		grpcDialOptions = append(grpcDialOptions, opts...)
 	}
 
-	contextDialer := g.opts.ContextDialer
+	cc, err := g.pool.getConn(dialCtx, addr, grpcDialOptions...)
-	if opts.ContextDialer != nil {
-		contextDialer = opts.ContextDialer
-	}
-	if contextDialer != nil {
-		grpcDialOptions = append(grpcDialOptions, grpc.WithContextDialer(contextDialer))
-	}
-
-	cc, err := g.pool.Get(dialCtx, addr, grpcDialOptions...)
 	if err != nil {
 		return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error sending request: %v", err))
 	}
@@ -268,17 +212,12 @@ func (g *grpcClient) stream(ctx context.Context, addr string, req client.Request
 	}
 
 	grpcCallOptions := []grpc.CallOption{
-		// grpc.ForceCodec(wc),
+		grpc.ForceCodec(wc),
 		grpc.CallContentSubtype(wc.Name()),
 	}
-	if opts := g.getGrpcCallOptions(opts.Context); opts != nil {
+	if opts := g.getGrpcCallOptions(); opts != nil {
 		grpcCallOptions = append(grpcCallOptions, opts...)
 	}
-	var gmd gmetadata.MD
-	if opts.ResponseMetadata != nil {
-		gmd = gmetadata.MD{}
-		grpcCallOptions = append(grpcCallOptions, grpc.Header(&gmd))
-	}
 
 	// create a new cancelling context
 	newCtx, cancel := context.WithCancel(ctx)
@@ -289,7 +228,7 @@ func (g *grpcClient) stream(ctx context.Context, addr string, req client.Request
 		// cancel the context
 		cancel()
 		// release the connection
-		g.pool.Put(cc, err)
+		g.pool.release(cc, err)
 		// now return the error
 		return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error creating stream: %v", err))
 	}
@@ -317,14 +256,13 @@ func (g *grpcClient) stream(ctx context.Context, addr string, req client.Request
 			}
 
 			// defer execution of release
-			g.pool.Put(cc, err)
+			g.pool.release(cc, err)
 		},
 	}
 
 	// set the stream as the response
 	val := reflect.ValueOf(rsp).Elem()
 	val.Set(reflect.ValueOf(stream).Elem())
-
 	return nil
 }
 
@@ -386,17 +324,6 @@ 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
@@ -416,23 +343,26 @@ func (g *grpcClient) Init(opts ...client.Option) error {
 		g.pool.Unlock()
 	}
 
-	g.funcCall = g.fnCall
+	if err := g.opts.Broker.Init(); err != nil {
-	g.funcStream = g.fnStream
+		return err
-	g.funcPublish = g.fnPublish
-	g.funcBatchPublish = g.fnBatchPublish
-
-	g.opts.Hooks.EachNext(func(hook options.Hook) {
-		switch h := hook.(type) {
-		case client.HookCall:
-			g.funcCall = h(g.funcCall)
-		case client.HookStream:
-			g.funcStream = h(g.funcStream)
-		case client.HookPublish:
-			g.funcPublish = h(g.funcPublish)
-		case client.HookBatchPublish:
-			g.funcBatchPublish = h(g.funcBatchPublish)
 	}
-	})
+	if err := g.opts.Tracer.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Router.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Logger.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Meter.Init(); err != nil {
+		return err
+	}
+	if err := g.opts.Transport.Init(); err != nil {
+		return err
+	}
+
+	g.init = true
 
 	return nil
 }
@@ -455,35 +385,8 @@ func (g *grpcClient) Call(ctx context.Context, req client.Request, rsp interface
 	} else if rsp == nil {
 		return errors.InternalServerError("go.micro.client", "rsp is nil")
 	}
-
-	ts := time.Now()
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
-	var sp tracer.Span
-	ctx, sp = g.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
-		tracer.WithSpanKind(tracer.SpanKindClient),
-		tracer.WithSpanLabels("endpoint", req.Endpoint()),
-	)
-	err := g.funcCall(ctx, req, rsp, opts...)
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
-	te := time.Since(ts)
-	g.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-	g.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-
-	if me := errors.FromError(err); me == nil {
-		sp.Finish()
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(200))).Inc()
-	} else {
-		sp.SetStatus(tracer.SpanStatusError, err.Error())
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code))).Inc()
-	}
-
-	return err
-}
-
-func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
 	// make a copy of call opts
 	callOpts := g.opts.CallOptions
-
 	for _, opt := range opts {
 		opt(&callOpts)
 	}
@@ -512,6 +415,11 @@ func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interfa
 	// make copy of call method
 	gcall := g.call
 
+	// wrap the call in reverse
+	for i := len(callOpts.CallWrappers); i > 0; i-- {
+		gcall = callOpts.CallWrappers[i-1](gcall)
+	}
+
 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
 		callOpts.Router = g.opts.Router
@@ -527,8 +435,20 @@ func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interfa
 		callOpts.Address = []string{g.opts.Proxy}
 	}
 
-	var next selector.Next
+	// lookup the route to send the reques to
+	// TODO apply any filtering here
+	routes, err := g.opts.Lookup(ctx, req, callOpts)
+	if err != nil {
+		return errors.InternalServerError("go.micro.client", err.Error())
+	}
 
+	// balance the list of nodes
+	next, err := callOpts.Selector.Select(routes)
+	if err != nil {
+		return err
+	}
+
+	// return errors.New("go.micro.client", "request timeout", 408)
 	call := func(i int) error {
 		// call backoff first. Someone may want an initial start delay
 		t, err := callOpts.Backoff(ctx, req, i)
@@ -541,23 +461,6 @@ func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interfa
 			time.Sleep(t)
 		}
 
-		if next == nil {
-			var routes []string
-
-			// lookup the route to send the reques to
-			// TODO apply any filtering here
-			routes, err = g.opts.Lookup(ctx, req, callOpts)
-			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
-			}
-
-			// balance the list of nodes
-			next, err = callOpts.Selector.Select(routes)
-			if err != nil {
-				return err
-			}
-		}
-
 		// get the next node
 		node := next()
 
@@ -611,31 +514,6 @@ func (g *grpcClient) fnCall(ctx context.Context, req client.Request, rsp interfa
 }
 
 func (g *grpcClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
-	ts := time.Now()
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Inc()
-	var sp tracer.Span
-	ctx, sp = g.opts.Tracer.Start(ctx, req.Endpoint()+" rpc-client",
-		tracer.WithSpanKind(tracer.SpanKindClient),
-		tracer.WithSpanLabels("endpoint", req.Endpoint()),
-	)
-	stream, err := g.funcStream(ctx, req, opts...)
-	g.opts.Meter.Counter(semconv.ClientRequestInflight, "endpoint", req.Endpoint()).Dec()
-	te := time.Since(ts)
-	g.opts.Meter.Summary(semconv.ClientRequestLatencyMicroseconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-	g.opts.Meter.Histogram(semconv.ClientRequestDurationSeconds, "endpoint", req.Endpoint()).Update(te.Seconds())
-
-	if me := status.Convert(err); me == nil {
-		sp.Finish()
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "success", "code", strconv.Itoa(int(codes.OK))).Inc()
-	} else {
-		sp.SetStatus(tracer.SpanStatusError, err.Error())
-		g.opts.Meter.Counter(semconv.ClientRequestTotal, "endpoint", req.Endpoint(), "status", "failure", "code", strconv.Itoa(int(me.Code()))).Inc()
-	}
-
-	return stream, err
-}
-
-func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
 	// make a copy of call opts
 	callOpts := g.opts.CallOptions
 	for _, opt := range opts {
@@ -654,6 +532,11 @@ func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...c
 	// make a copy of stream
 	gstream := g.stream
 
+	// wrap the call in reverse
+	for i := len(callOpts.CallWrappers); i > 0; i-- {
+		gstream = callOpts.CallWrappers[i-1](gstream)
+	}
+
 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
 		callOpts.Router = g.opts.Router
@@ -669,7 +552,18 @@ func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...c
 		callOpts.Address = []string{g.opts.Proxy}
 	}
 
-	var next selector.Next
+	// lookup the route to send the reques to
+	// TODO: move to internal lookup func
+	routes, err := g.opts.Lookup(ctx, req, callOpts)
+	if err != nil {
+		return nil, errors.InternalServerError("go.micro.client", err.Error())
+	}
+
+	// balance the list of nodes
+	next, err := callOpts.Selector.Select(routes)
+	if err != nil {
+		return nil, err
+	}
 
 	call := func(i int) (client.Stream, error) {
 		// call backoff first. Someone may want an initial start delay
@@ -683,23 +577,6 @@ func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...c
 			time.Sleep(t)
 		}
 
-		if next == nil {
-			var routes []string
-
-			// lookup the route to send the reques to
-			// TODO apply any filtering here
-			routes, err = g.opts.Lookup(ctx, req, callOpts)
-			if err != nil {
-				return nil, errors.InternalServerError("go.micro.client", err.Error())
-			}
-
-			// balance the list of nodes
-			next, err = callOpts.Selector.Select(routes)
-			if err != nil {
-				return nil, err
-			}
-		}
-
 		// get the next node
 		node := next()
 
@@ -764,18 +641,10 @@ func (g *grpcClient) fnStream(ctx context.Context, req client.Request, opts ...c
 }
 
 func (g *grpcClient) BatchPublish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
-	return g.funcBatchPublish(ctx, ps, opts...)
-}
-
-func (g *grpcClient) fnBatchPublish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
 	return g.publish(ctx, ps, opts...)
 }
 
 func (g *grpcClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
-	return g.funcPublish(ctx, p, opts...)
-}
-
-func (g *grpcClient) fnPublish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
 	return g.publish(ctx, []client.Message{p}, opts...)
 }
 
@@ -789,10 +658,6 @@ 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))
 
@@ -804,16 +669,7 @@ 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()
+		md[metadata.HeaderTopic] = 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 {
@@ -831,6 +687,13 @@ func (g *grpcClient) publish(ctx context.Context, ps []client.Message, opts ...c
 			}
 			body = b
 		}
+
+		topic := p.Topic()
+		if len(exchange) > 0 {
+			topic = exchange
+		}
+
+		md.Set(metadata.HeaderTopic, topic)
 		msgs = append(msgs, &broker.Message{Header: md, Body: body})
 	}
 
@@ -848,45 +711,41 @@ func (g *grpcClient) Name() string {
 	return g.opts.Name
 }
 
-func (g *grpcClient) getGrpcDialOptions(ctx context.Context) []grpc.DialOption {
+func (g *grpcClient) getGrpcDialOptions() []grpc.DialOption {
-	var opts []grpc.DialOption
+	if g.opts.CallOptions.Context == nil {
-
+		return nil
-	if g.opts.CallOptions.Context != nil {
-		if v := g.opts.CallOptions.Context.Value(grpcDialOptions{}); v != nil {
-			if vopts, ok := v.([]grpc.DialOption); ok {
-				opts = append(opts, vopts...)
-			}
-		}
 	}
 
-	if ctx != nil {
+	v := g.opts.CallOptions.Context.Value(grpcDialOptions{})
-		if v := ctx.Value(grpcDialOptions{}); v != nil {
+
-			if vopts, ok := v.([]grpc.DialOption); ok {
+	if v == nil {
-				opts = append(opts, vopts...)
+		return nil
-			}
 	}
+
+	opts, ok := v.([]grpc.DialOption)
+
+	if !ok {
+		return nil
 	}
 
 	return opts
 }
 
-func (g *grpcClient) getGrpcCallOptions(ctx context.Context) []grpc.CallOption {
+func (g *grpcClient) getGrpcCallOptions() []grpc.CallOption {
-	var opts []grpc.CallOption
+	if g.opts.CallOptions.Context == nil {
-
+		return nil
-	if g.opts.CallOptions.Context != nil {
-		if v := g.opts.CallOptions.Context.Value(grpcCallOptions{}); v != nil {
-			if vopts, ok := v.([]grpc.CallOption); ok {
-				opts = append(opts, vopts...)
-			}
-		}
 	}
 
-	if ctx != nil {
+	v := g.opts.CallOptions.Context.Value(grpcCallOptions{})
-		if v := ctx.Value(grpcCallOptions{}); v != nil {
+
-			if vopts, ok := v.([]grpc.CallOption); ok {
+	if v == nil {
-				opts = append(opts, vopts...)
+		return nil
-			}
 	}
+
+	opts, ok := v.([]grpc.CallOption)
+
+	if !ok {
+		return nil
 	}
 
 	return opts
@@ -895,20 +754,25 @@ func (g *grpcClient) getGrpcCallOptions(ctx context.Context) []grpc.CallOption {
 func NewClient(opts ...client.Option) client.Client {
 	options := client.NewOptions(opts...)
 	// default content type for grpc
-	if options.ContentType == "" {
+	options.ContentType = defaultContentType
-		options.ContentType = DefaultContentType
-	}
 
-	c := &grpcClient{
+	rc := &grpcClient{
 		opts: options,
 	}
 
-	c.pool = NewConnPool(options.PoolSize, options.PoolTTL, c.poolMaxIdle(), c.poolMaxStreams())
+	rc.pool = newPool(options.PoolSize, options.PoolTTL, rc.poolMaxIdle(), rc.poolMaxStreams())
 
-	if c.opts.Context != nil {
+	c := client.Client(rc)
-		if codecs, ok := c.opts.Context.Value(codecsKey{}).(map[string]encoding.Codec); ok && codecs != nil {
+
+	// wrap in reverse
+	for i := len(options.Wrappers); i > 0; i-- {
+		c = options.Wrappers[i-1](c)
+	}
+
+	if rc.opts.Context != nil {
+		if codecs, ok := rc.opts.Context.Value(codecsKey{}).(map[string]encoding.Codec); ok && codecs != nil {
 			for k, v := range codecs {
-				c.opts.Codecs[k] = &wrapGrpcCodec{v}
+				rc.opts.Codecs[k] = &wrapGrpcCodec{v}
 			}
 		}
 	}
@@ -917,10 +781,5 @@ func NewClient(opts ...client.Option) client.Client {
 		encoding.RegisterCodec(&wrapMicroCodec{k})
 	}
 
-	c.funcCall = c.fnCall
-	c.funcStream = c.fnStream
-	c.funcPublish = c.fnPublish
-	c.funcBatchPublish = c.fnBatchPublish
-
 	return c
 }

grpc_pool.go

@@ -2,7 +2,6 @@ package grpc
 
 import (
 	"context"
-	"strings"
 	"sync"
 	"time"
 
@@ -10,7 +9,7 @@ import (
 	"google.golang.org/grpc/connectivity"
 )
 
-type ConnPool struct {
+type pool struct {
 	conns      map[string]*streamsPool
 	size       int
 	ttl        int64
@@ -21,36 +20,36 @@ 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
+	pool    *pool
 	sp      *streamsPool
-	pre     *PoolConn
+	pre     *poolConn
 	addr    string
 	streams int
 	created int64
 	in      bool
 }
 
-func NewConnPool(size int, ttl time.Duration, idle int, ms int) *ConnPool {
+func newPool(size int, ttl time.Duration, idle int, ms int) *pool {
 	if ms <= 0 {
 		ms = 1
 	}
 	if idle < 0 {
 		idle = 0
 	}
-	return &ConnPool{
+	return &pool{
 		size:       size,
 		ttl:        int64(ttl.Seconds()),
 		maxStreams: ms,
@@ -59,15 +58,12 @@ 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 *pool) getConn(ctx context.Context, addr string, opts ...grpc.DialOption) (*poolConn, error) {
-	if strings.HasPrefix(addr, "http") {
-		addr = addr[strings.Index(addr, ":")+3:]
-	}
 	now := time.Now().Unix()
 	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
@@ -130,12 +126,12 @@ func (p *ConnPool) Get(ctx context.Context, addr string, opts ...grpc.DialOption
 	}
 	p.Unlock()
 
-	//  create new conn)
+	//  create new conn
 	cc, err := grpc.DialContext(ctx, addr, opts...)
 	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 +143,7 @@ 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 *pool) release(conn *poolConn, err error) {
 	p.Lock()
 	p, sp, created := conn.pool, conn.sp, conn.created
 	//  try to add conn
@@ -182,11 +178,11 @@ func (p *ConnPool) Put(conn *PoolConn, err error) {
 	p.Unlock()
 }
 
-func (conn *PoolConn) Close() {
+func (conn *poolConn) Close() {
-	conn.pool.Put(conn, conn.err)
+	conn.pool.release(conn, conn.err)
 }
 
-func removeConn(conn *PoolConn) {
+func removeConn(conn *poolConn) {
 	if conn.pre != nil {
 		conn.pre.next = conn.next
 	}
@@ -199,7 +195,7 @@ 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 {

message.go

@@ -2,18 +2,19 @@ package grpc
 
 import (
 	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/metadata"
 )
 
 type grpcEvent struct {
 	payload     interface{}
 	topic       string
 	contentType string
-	opts        client.MessageOptions
 }
 
 func newGRPCEvent(topic string, payload interface{}, contentType string, opts ...client.MessageOption) client.Message {
-	options := client.NewMessageOptions(opts...)
+	var options client.MessageOptions
+	for _, o := range opts {
+		o(&options)
+	}
 
 	if len(options.ContentType) > 0 {
 		contentType = options.ContentType
@@ -23,7 +24,6 @@ func newGRPCEvent(topic string, payload interface{}, contentType string, opts ..
 		payload:     payload,
 		topic:       topic,
 		contentType: contentType,
-		opts:        options,
 	}
 }
 
@@ -38,7 +38,3 @@ func (g *grpcEvent) Topic() string {
 func (g *grpcEvent) Payload() interface{} {
 	return g.payload
 }
-
-func (g *grpcEvent) Metadata() metadata.Metadata {
-	return g.opts.Metadata
-}

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{}
@@ -73,7 +70,9 @@ func Codec(contentType string, c encoding.Codec) client.Option {
 
 type maxRecvMsgSizeKey struct{}
 
+//
 // MaxRecvMsgSize set the maximum size of message that client can receive.
+//
 func MaxRecvMsgSize(s int) client.Option {
 	return func(o *client.Options) {
 		if o.Context == nil {
@@ -85,7 +84,9 @@ func MaxRecvMsgSize(s int) client.Option {
 
 type maxSendMsgSizeKey struct{}
 
+//
 // MaxSendMsgSize set the maximum size of message that client can send.
+//
 func MaxSendMsgSize(s int) client.Option {
 	return func(o *client.Options) {
 		if o.Context == nil {
@@ -97,9 +98,11 @@ func MaxSendMsgSize(s int) client.Option {
 
 type grpcDialOptions struct{}
 
+//
 // DialOptions to be used to configure gRPC dial options
-func DialOptions(opts ...grpc.DialOption) client.Option {
+//
-	return func(o *client.Options) {
+func DialOptions(opts ...grpc.DialOption) client.CallOption {
+	return func(o *client.CallOptions) {
 		if o.Context == nil {
 			o.Context = context.Background()
 		}
@@ -109,7 +112,9 @@ func DialOptions(opts ...grpc.DialOption) client.Option {
 
 type grpcCallOptions struct{}
 
+//
 // CallOptions to be used to configure gRPC call options
+//
 func CallOptions(opts ...grpc.CallOption) client.CallOption {
 	return func(o *client.CallOptions) {
 		if o.Context == nil {
@@ -118,14 +123,3 @@ 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)
-	}
-}

request.go

@@ -38,12 +38,15 @@ func methodToGRPC(service, method string) string {
 	return fmt.Sprintf("/%s.%s/%s", service, mParts[0], mParts[1])
 }
 
-func newGRPCRequest(service, method string, request interface{}, contentType string, opts ...client.RequestOption) client.Request {
+func newGRPCRequest(service, method string, request interface{}, contentType string, reqOpts ...client.RequestOption) client.Request {
-	options := client.NewRequestOptions(opts...)
+	var opts client.RequestOptions
+	for _, o := range reqOpts {
+		o(&opts)
+	}
 
 	// set the content-type specified
-	if len(options.ContentType) > 0 {
+	if len(opts.ContentType) > 0 {
-		contentType = options.ContentType
+		contentType = opts.ContentType
 	}
 
 	return &grpcRequest{
@@ -51,7 +54,7 @@ func newGRPCRequest(service, method string, request interface{}, contentType str
 		method:      method,
 		request:     request,
 		contentType: contentType,
-		opts:        options,
+		opts:        opts,
 	}
 }
 

response.go

@@ -9,7 +9,7 @@ import (
 )
 
 type response struct {
-	conn   *PoolConn
+	conn   *poolConn
 	stream grpc.ClientStream
 	codec  codec.Codec
 }
@@ -23,7 +23,7 @@ func (r *response) Codec() codec.Codec {
 func (r *response) Header() metadata.Metadata {
 	meta, err := r.stream.Header()
 	if err != nil {
-		return nil
+		return metadata.New(0)
 	}
 	md := metadata.New(len(meta))
 	for k, v := range meta {
@@ -34,5 +34,9 @@ func (r *response) Header() metadata.Metadata {
 
 // Read the undecoded response
 func (r *response) Read() ([]byte, error) {
-	return nil, nil
+	f := &codec.Frame{}
+	if err := r.codec.ReadBody(&wrapStream{r.stream}, f); err != nil {
+		return nil, err
+	}
+	return f.Data, nil
 }

stream.go

@@ -6,7 +6,6 @@ import (
 	"sync"
 
 	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/tracer"
 	"google.golang.org/grpc"
 )
 
@@ -18,7 +17,7 @@ type grpcStream struct {
 	request  client.Request
 	response client.Response
 	close    func(err error)
-	conn     *PoolConn
+	conn     *poolConn
 	sync.RWMutex
 	closed bool
 }
@@ -43,14 +42,6 @@ func (g *grpcStream) Send(msg interface{}) error {
 	return nil
 }
 
-func (g *grpcStream) SendMsg(msg interface{}) error {
-	if err := g.ClientStream.SendMsg(msg); err != nil {
-		g.setError(err)
-		return err
-	}
-	return nil
-}
-
 func (g *grpcStream) Recv(msg interface{}) (err error) {
 	defer g.setError(err)
 
@@ -69,24 +60,6 @@ func (g *grpcStream) Recv(msg interface{}) (err error) {
 	return
 }
 
-func (g *grpcStream) RecvMsg(msg interface{}) (err error) {
-	defer g.setError(err)
-
-	if err = g.ClientStream.RecvMsg(msg); err != nil {
-		// #202 - inconsistent gRPC stream behavior
-		// the only way to tell if the stream is done is when we get a EOF on the Recv
-		// here we should close the underlying gRPC ClientConn
-		closeErr := g.Close()
-		if err == io.EOF && closeErr != nil {
-			err = closeErr
-		}
-
-		return err
-	}
-
-	return
-}
-
 func (g *grpcStream) Error() error {
 	g.RLock()
 	defer g.RUnlock()
@@ -112,26 +85,6 @@ func (g *grpcStream) Close() error {
 		return nil
 	}
 
-	if sp, ok := tracer.SpanFromContext(g.context); ok && sp != nil {
-		if g.err != nil {
-			sp.SetStatus(tracer.SpanStatusError, g.err.Error())
-		}
-		sp.Finish()
-	}
-	// close the connection
-	g.closed = true
-	g.close(g.err)
-	return g.ClientStream.CloseSend()
-}
-
-func (g *grpcStream) CloseSend() error {
-	g.Lock()
-	defer g.Unlock()
-
-	if g.closed {
-		return nil
-	}
-
 	// close the connection
 	g.closed = true
 	g.close(g.err)