fixup grpc error codes in unary and stream processing

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

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: For reporting bugs in go-micro
+about: For reporting bugs in micro
 title: "[BUG]"
 labels: ''
 assignees: ''
@@ -16,9 +16,3 @@ assignees: ''
 **How to reproduce the bug:**
 
 If possible, please include a minimal code snippet here.
-
-**Environment:**
-Go Version: please paste `go version` output here
-```
-please paste `go env` output here
-```

.github/ISSUE_TEMPLATE/feature-request---enhancement.md

@@ -1,6 +1,6 @@
 ---
 name: Feature request / Enhancement
-about: If you have a need not served by go-micro
+about: If you have a need not served by micro
 title: "[FEATURE]"
 labels: ''
 assignees: ''
@@ -14,4 +14,4 @@ A clear and concise description of what the problem is. Ex. I'm always frustrate
 A clear and concise description of what you want to happen.
 
 **Additional context**
-Add any other context or screenshots about the feature request here.
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/question.md

@@ -1,14 +1,8 @@
 ---
 name: Question
-about: Ask a question about go-micro
+about: Ask a question about micro
 title: ''
 labels: ''
 assignees: ''
 
----
-
-Before asking, please check if your question has already been answered: 
-
-1. Check the documentation - https://micro.mu/docs/
-2. Check the examples and plugins - https://github.com/micro/examples & https://github.com/micro/go-plugins
-3. Search existing issues
+---

.github/autoapprove.yml

@@ -0,0 +1,28 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+  workflow_run:
+    workflows: ["prbuild"]
+    types:
+      - completed
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        run: [ "curl -o tea https://dl.gitea.com/tea/main/tea-main-linux-amd64",
+               "chmod +x ./tea",
+               "./tea login add --name unistack --token ${{ secrets.GITHUB_TOKEN }} --url https://git.unistack.org",
+               "./tea pr --repo ${{ github.event.repository.name }}"
+        ]
+        if: github.actor == 'vtolstov'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/dependabot.yml

@@ -1,19 +0,0 @@
-# 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

@@ -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@v2
-        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

@@ -1,47 +0,0 @@
-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@v3.2.0
-        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

@@ -1,78 +0,0 @@
-# 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

@@ -1,27 +0,0 @@
-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@v1.3.1
-        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/job_coverage.yml

@@ -0,0 +1,53 @@
+name: coverage
+
+on:
+  push:
+    branches: [ main, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+  pull_request:
+    branches: [ main, v3, v4 ]
+
+jobs:
+
+  build:
+    if: github.server_url != 'https://github.com'
+    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: test coverage
+      run: |
+        go test -v -cover ./... -covermode=count -coverprofile coverage.out -coverpkg ./...
+        go tool cover -func coverage.out -o coverage.out
+
+    - name: coverage badge
+      uses: tj-actions/coverage-badge-go@v2
+      with:
+        green: 80
+        filename: coverage.out
+
+    - uses: stefanzweifel/git-auto-commit-action@v4
+      name: autocommit
+      with:
+        commit_message: Apply Code Coverage Badge
+        skip_fetch: false
+        skip_checkout: false
+        file_pattern: ./README.md
+
+    - name: push
+      if: steps.auto-commit-action.outputs.changes_detected == 'true'
+      uses: ad-m/github-push-action@master
+      with:
+        github_token: ${{ github.token }}
+        branch: ${{ github.ref }}

.github/workflows/job_lint.yml

@@ -0,0 +1,29 @@
+name: lint
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+
+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: golangci/golangci-lint-action@v6
+      with:
+        version: 'latest'

.github/workflows/job_sync.yml

@@ -0,0 +1,94 @@
+name: sync
+
+on:
+  schedule:
+    - cron: '*/5 * * * *'
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  sync:
+    if: github.server_url != 'https://github.com'
+    runs-on: ubuntu-latest
+    steps:
+    - name: init
+      run: |
+        git config --global user.email "vtolstov <vtolstov@users.noreply.github.com>"
+        git config --global user.name "github-actions[bot]"
+        echo "machine git.unistack.org login vtolstov password ${{ secrets.TOKEN_GITEA }}" >> /root/.netrc
+        echo "machine github.com login vtolstov password ${{ secrets.TOKEN_GITHUB }}" >> /root/.netrc
+
+    - name: check master
+      id: check_master
+      run: |
+        src_hash=$(git ls-remote https://github.com/${GITHUB_REPOSITORY} refs/heads/master | cut -f1)
+        dst_hash=$(git ls-remote ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} refs/heads/master | cut -f1)
+        echo "src_hash=$src_hash"
+        echo "dst_hash=$dst_hash"
+        if [ "$src_hash" != "$dst_hash" ]; then
+          echo "sync_needed=true" >> $GITHUB_OUTPUT
+        else
+          echo "sync_needed=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: sync master
+      if: steps.check_master.outputs.sync_needed == 'true'
+      run: |
+        git clone --filter=blob:none --filter=tree:0 --branch master --single-branch ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} repo
+        cd repo
+        git remote add --no-tags --fetch --track master upstream https://github.com/${GITHUB_REPOSITORY}
+        git pull --rebase upstream master
+        git push upstream master --progress
+        git push origin master --progress
+        cd ../
+        rm -rf repo
+
+    - name: check v3
+      id: check_v3
+      run: |
+        src_hash=$(git ls-remote https://github.com/${GITHUB_REPOSITORY} refs/heads/v3 | cut -f1)
+        dst_hash=$(git ls-remote ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} refs/heads/v3 | cut -f1)
+        echo "src_hash=$src_hash"
+        echo "dst_hash=$dst_hash"
+        if [ "$src_hash" != "$dst_hash" ]; then
+          echo "sync_needed=true" >> $GITHUB_OUTPUT
+        else
+          echo "sync_needed=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: sync v3
+      if: steps.check_v3.outputs.sync_needed == 'true'
+      run: |
+        git clone --filter=blob:none --filter=tree:0 --branch v3 --single-branch ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} repo
+        cd repo
+        git remote add --no-tags --fetch --track v3 upstream https://github.com/${GITHUB_REPOSITORY}
+        git pull --rebase upstream v3
+        git push upstream v3 --progress
+        git push origin v3 --progress
+        cd ../
+        rm -rf repo
+
+    - name: check v4
+      id: check_v4
+      run: |
+        src_hash=$(git ls-remote https://github.com/${GITHUB_REPOSITORY} refs/heads/v4 | cut -f1)
+        dst_hash=$(git ls-remote ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} refs/heads/v4 | cut -f1)
+        echo "src_hash=$src_hash"
+        echo "dst_hash=$dst_hash"
+        if [ "$src_hash" != "$dst_hash" ]; then
+          echo "sync_needed=true" >> $GITHUB_OUTPUT
+        else
+          echo "sync_needed=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: sync v4
+      if: steps.check_v4.outputs.sync_needed == 'true'
+      run: |
+        git clone --filter=blob:none --filter=tree:0 --branch v4 --single-branch ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} repo
+        cd repo
+        git remote add --no-tags --fetch --track v4 upstream https://github.com/${GITHUB_REPOSITORY}
+        git pull --rebase upstream v4
+        git push upstream v4 --progress
+        git push origin v4 --progress
+        cd ../
+        rm -rf repo

.github/workflows/job_test.yml

@@ -0,0 +1,31 @@
+name: test
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+    branches: [ master, v3, v4 ]
+  push:
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+
+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 ./...

.github/workflows/job_tests.yml

@@ -0,0 +1,50 @@
+name: test
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+    branches: [ master, v3, v4 ]
+  push:
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+
+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: ${{ github.workspace }}/go.work
+      run: |
+        go work init
+        go work use .
+        go work use micro-tests
+    - name: setup deps
+      env:
+        GOWORK: ${{ github.workspace }}/go.work
+      run: go get -v ./...
+    - name: run tests
+      env:
+        INTEGRATION_TESTS: yes
+        GOWORK: ${{ github.workspace }}/go.work
+      run: |
+        cd micro-tests
+        go test -mod readonly -v ./... || true

.github/workflows/pr.yml

@@ -1,47 +0,0 @@
-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@v3.2.0
-        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

@@ -0,0 +1,24 @@
+# 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

@@ -1,44 +1,5 @@
 run:
-  concurrency: 4
-  deadline: 5m
+  concurrency: 8
+  timeout: 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

README.md

@@ -0,0 +1,4 @@
+# GRPC Server
+![Coverage](https://img.shields.io/badge/Coverage-3.5%25-red)
+
+This plugin is a grpc server for micro.

codec.go

@@ -1,9 +1,7 @@
 package grpc
 
 import (
-	"io"
-
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/codec"
 	"google.golang.org/grpc/encoding"
 )
 
@@ -49,29 +47,3 @@ func (w *wrapGrpcCodec) Unmarshal(d []byte, v interface{}, opts ...codec.Option)
 	}
 	return w.Codec.Unmarshal(d, v)
 }
-
-func (w *wrapGrpcCodec) ReadHeader(conn io.Reader, m *codec.Message, mt codec.MessageType) error {
-	return nil
-}
-
-func (w *wrapGrpcCodec) ReadBody(conn io.Reader, v interface{}) error {
-	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

@@ -6,7 +6,7 @@ import (
 	"net/http"
 	"os"
 
-	"go.unistack.org/micro/v3/errors"
+	"go.unistack.org/micro/v4/errors"
 	"google.golang.org/grpc/codes"
 )
 

generate.go

@@ -0,0 +1,4 @@
+package grpc
+
+//go:generate go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
+//go:generate sh -c "protoc -I./proto -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v4) -I. --go-grpc_out=paths=source_relative:./proto --go_out=paths=source_relative:./proto proto/test.proto"

go.mod

@@ -1,13 +1,27 @@
-module go.unistack.org/micro-server-grpc/v3
+module go.unistack.org/micro-server-grpc/v4
 
-go 1.16
+go 1.23.0
+
+toolchain go1.24.2
 
 require (
-	github.com/golang/protobuf v1.5.2
-	go.unistack.org/micro/v3 v3.9.8
-	golang.org/x/net v0.0.0-20220225172249-27dd8689420f
-	golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5 // indirect
-	google.golang.org/genproto v0.0.0-20220310185008-1973136f34c6 // indirect
-	google.golang.org/grpc v1.47.0
-	google.golang.org/protobuf v1.28.0
+	github.com/stretchr/testify v1.10.0
+	go.unistack.org/micro/v4 v4.1.8
+	golang.org/x/net v0.39.0
+	google.golang.org/grpc v1.72.0
+	google.golang.org/protobuf v1.36.6
+)
+
+require (
+	github.com/ash3in/uuidv8 v1.2.0 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/matoous/go-nanoid v1.5.1 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
+	go.unistack.org/micro-proto/v4 v4.1.0 // indirect
+	golang.org/x/sys v0.32.0 // indirect
+	golang.org/x/text v0.24.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250428153025-10db94c68c34 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,192 +1,65 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
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-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-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=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

handler.go

@@ -3,43 +3,25 @@ package grpc
 import (
 	"reflect"
 
-	"go.unistack.org/micro/v3/register"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 )
 
 type rpcHandler struct {
-	opts      server.HandlerOptions
-	handler   interface{}
-	name      string
-	endpoints []*register.Endpoint
+	opts    server.HandlerOptions
+	handler interface{}
+	name    string
 }
 
 func newRPCHandler(handler interface{}, opts ...server.HandlerOption) server.Handler {
 	options := server.NewHandlerOptions(opts...)
 
-	typ := reflect.TypeOf(handler)
 	hdlr := reflect.ValueOf(handler)
 	name := reflect.Indirect(hdlr).Type().Name()
 
-	var endpoints []*register.Endpoint
-
-	for m := 0; m < typ.NumMethod(); m++ {
-		if e := register.ExtractEndpoint(typ.Method(m)); e != nil {
-			e.Name = name + "." + e.Name
-
-			for k, v := range options.Metadata[e.Name] {
-				e.Metadata[k] = v
-			}
-
-			endpoints = append(endpoints, e)
-		}
-	}
-
 	return &rpcHandler{
-		name:      name,
-		handler:   handler,
-		endpoints: endpoints,
-		opts:      options,
+		name:    name,
+		handler: handler,
+		opts:    options,
 	}
 }
 
@@ -51,10 +33,6 @@ func (r *rpcHandler) Handler() interface{} {
 	return r.handler
 }
 
-func (r *rpcHandler) Endpoints() []*register.Endpoint {
-	return r.endpoints
-}
-
 func (r *rpcHandler) Options() server.HandlerOptions {
 	return r.opts
 }

metadata.go

@@ -0,0 +1,47 @@
+package grpc
+
+import (
+	"context"
+
+	"go.unistack.org/micro/v4/metadata"
+)
+
+type (
+	rspMetadataKey struct{}
+	rspMetadataVal struct {
+		m metadata.Metadata
+	}
+)
+
+// AppendResponseMetadata adds metadata entries to metadata.Metadata stored in the context.
+// It expects the context to contain a *rspMetadataVal value under the rspMetadataKey{} key.
+// If the value is missing or invalid, the function does nothing.
+//
+// Note: this function is not thread-safe. Synchronization is required if used from multiple goroutines.
+func AppendResponseMetadata(ctx context.Context, md metadata.Metadata) {
+	if md == nil {
+		return
+	}
+
+	val, ok := ctx.Value(rspMetadataKey{}).(*rspMetadataVal)
+	if !ok || val == nil || val.m == nil {
+		return
+	}
+
+	for key, values := range md {
+		val.m.Append(key, values...)
+	}
+}
+
+// getResponseMetadata retrieves the metadata.Metadata stored in the context.
+//
+// Note: this function is not thread-safe. Synchronization is required if used from multiple goroutines.
+// If you plan to modify the returned metadata, make a full copy to avoid affecting shared state.
+func getResponseMetadata(ctx context.Context) metadata.Metadata {
+	val, ok := ctx.Value(rspMetadataKey{}).(*rspMetadataVal)
+	if !ok || val == nil || val.m == nil {
+		return nil
+	}
+
+	return val.m
+}

metadata_test.go

@@ -0,0 +1,136 @@
+package grpc
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.unistack.org/micro/v4/metadata"
+)
+
+func TestAppendResponseMetadata(t *testing.T) {
+	tests := []struct {
+		name     string
+		ctx      context.Context
+		md       metadata.Metadata
+		expected context.Context
+	}{
+		{
+			name:     "nil metadata",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+			md:       nil,
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+		},
+		{
+			name:     "empty metadata",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+			md:       metadata.Metadata{},
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+		},
+		{
+			name:     "context without response metadata key",
+			ctx:      context.Background(),
+			md:       metadata.Pairs("key1", "val1"),
+			expected: context.Background(),
+		},
+		{
+			name:     "context with nil response metadata value",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, nil),
+			md:       metadata.Pairs("key1", "val1"),
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, nil),
+		},
+		{
+			name:     "context with incorrect type in response metadata value",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, struct{}{}),
+			md:       metadata.Pairs("key1", "val1"),
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, struct{}{}),
+		},
+		{
+			name:     "context with response metadata value, but nil metadata",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: nil}),
+			md:       metadata.Pairs("key1", "val1"),
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: nil}),
+		},
+		{
+			name: "basic metadata append",
+			ctx:  context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+			md:   metadata.Pairs("key1", "val1"),
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{
+				m: metadata.Metadata{
+					"key1": []string{"val1"},
+				},
+			}),
+		},
+		{
+			name: "multiple values for same key",
+			ctx:  context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+			md:   metadata.Pairs("key1", "val1", "key1", "val2"),
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{
+				m: metadata.Metadata{
+					"key1": []string{"val1", "val2"},
+				},
+			}),
+		},
+		{
+			name: "multiple values for different keys",
+			ctx:  context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: metadata.Metadata{}}),
+			md:   metadata.Pairs("key1", "val1", "key1", "val2", "key2", "val3", "key2", "val4", "key3", "val5"),
+			expected: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{
+				m: metadata.Metadata{
+					"key1": []string{"val1", "val2"},
+					"key2": []string{"val3", "val4"},
+					"key3": []string{"val5"},
+				},
+			}),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			AppendResponseMetadata(tt.ctx, tt.md)
+			require.Equal(t, tt.expected, tt.ctx)
+		})
+	}
+}
+
+func TestGetResponseMetadata(t *testing.T) {
+	tests := []struct {
+		name     string
+		ctx      context.Context
+		expected metadata.Metadata
+	}{
+		{
+			name:     "context without response metadata key",
+			ctx:      context.Background(),
+			expected: nil,
+		},
+		{
+			name:     "context with nil response metadata value",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, nil),
+			expected: nil,
+		},
+		{
+			name:     "context with incorrect type in response metadata value",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, &struct{}{}),
+			expected: nil,
+		},
+		{
+			name:     "context with response metadata value, but nil metadata",
+			ctx:      context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{m: nil}),
+			expected: nil,
+		},
+		{
+			name: "valid metadata",
+			ctx: context.WithValue(context.Background(), rspMetadataKey{}, &rspMetadataVal{
+				m: metadata.Pairs("key1", "value1"),
+			}),
+			expected: metadata.Metadata{"key1": {"value1"}},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.expected, getResponseMetadata(tt.ctx))
+		})
+	}
+}

options.go

@@ -3,7 +3,7 @@ package grpc
 import (
 	"context"
 
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/encoding"
 )
@@ -36,7 +36,6 @@ func Options(opts ...grpc.ServerOption) server.Option {
 	return server.SetOption(grpcOptions{}, opts)
 }
 
-//
 // MaxMsgSize set the maximum message in bytes the server can receive and
 // send. Default maximum message size is 4 MB.
 func MaxMsgSize(s int) server.Option {
@@ -44,8 +43,8 @@ func MaxMsgSize(s int) server.Option {
 }
 
 // Reflection enables reflection support in grpc server
-func Reflection(b bool) server.Option {
-	return server.SetOption(reflectionKey{}, b)
+func Reflection(r Reflector) server.Option {
+	return server.SetOption(reflectionKey{}, r)
 }
 
 // UnknownServiceHandler enables support for all services

proto/test.pb.go

@@ -0,0 +1,208 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v4.25.2
+// source: test.proto
+
+package testpb
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type CallReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data string `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *CallReq) Reset() {
+	*x = CallReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CallReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CallReq) ProtoMessage() {}
+
+func (x *CallReq) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CallReq.ProtoReflect.Descriptor instead.
+func (*CallReq) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *CallReq) GetData() string {
+	if x != nil {
+		return x.Data
+	}
+	return ""
+}
+
+type CallRsp struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data string `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *CallRsp) Reset() {
+	*x = CallRsp{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CallRsp) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CallRsp) ProtoMessage() {}
+
+func (x *CallRsp) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CallRsp.ProtoReflect.Descriptor instead.
+func (*CallRsp) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *CallRsp) GetData() string {
+	if x != nil {
+		return x.Data
+	}
+	return ""
+}
+
+var File_test_proto protoreflect.FileDescriptor
+
+var file_test_proto_rawDesc = []byte{
+	0x0a, 0x0a, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x74, 0x65,
+	0x73, 0x74, 0x22, 0x1d, 0x0a, 0x07, 0x43, 0x61, 0x6c, 0x6c, 0x52, 0x65, 0x71, 0x12, 0x12, 0x0a,
+	0x04, 0x64, 0x61, 0x74, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x61, 0x74,
+	0x61, 0x22, 0x1d, 0x0a, 0x07, 0x43, 0x61, 0x6c, 0x6c, 0x52, 0x73, 0x70, 0x12, 0x12, 0x0a, 0x04,
+	0x64, 0x61, 0x74, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x61, 0x74, 0x61,
+	0x32, 0x33, 0x0a, 0x0b, 0x54, 0x65, 0x73, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12,
+	0x24, 0x0a, 0x04, 0x43, 0x61, 0x6c, 0x6c, 0x12, 0x0d, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x43,
+	0x61, 0x6c, 0x6c, 0x52, 0x65, 0x71, 0x1a, 0x0d, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x43, 0x61,
+	0x6c, 0x6c, 0x52, 0x73, 0x70, 0x42, 0x0b, 0x5a, 0x09, 0x2e, 0x2f, 0x3b, 0x74, 0x65, 0x73, 0x74,
+	0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_test_proto_rawDescOnce sync.Once
+	file_test_proto_rawDescData = file_test_proto_rawDesc
+)
+
+func file_test_proto_rawDescGZIP() []byte {
+	file_test_proto_rawDescOnce.Do(func() {
+		file_test_proto_rawDescData = protoimpl.X.CompressGZIP(file_test_proto_rawDescData)
+	})
+	return file_test_proto_rawDescData
+}
+
+var file_test_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_test_proto_goTypes = []interface{}{
+	(*CallReq)(nil), // 0: test.CallReq
+	(*CallRsp)(nil), // 1: test.CallRsp
+}
+var file_test_proto_depIdxs = []int32{
+	0, // 0: test.TestService.Call:input_type -> test.CallReq
+	1, // 1: test.TestService.Call:output_type -> test.CallRsp
+	1, // [1:2] is the sub-list for method output_type
+	0, // [0:1] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_test_proto_init() }
+func file_test_proto_init() {
+	if File_test_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_test_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CallReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_test_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CallRsp); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_test_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_test_proto_goTypes,
+		DependencyIndexes: file_test_proto_depIdxs,
+		MessageInfos:      file_test_proto_msgTypes,
+	}.Build()
+	File_test_proto = out.File
+	file_test_proto_rawDesc = nil
+	file_test_proto_goTypes = nil
+	file_test_proto_depIdxs = nil
+}

proto/test.proto

@@ -0,0 +1,18 @@
+syntax = "proto3";
+
+package test;
+
+option go_package = "./;testpb";
+
+
+service TestService {
+  rpc Call(CallReq) returns (CallRsp);
+}
+
+message CallReq {
+  string data = 1;
+}
+
+message CallRsp {
+  string data = 1;
+}

proto/test_grpc.pb.go

@@ -0,0 +1,109 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.3.0
+// - protoc             v4.25.2
+// source: test.proto
+
+package testpb
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+const (
+	TestService_Call_FullMethodName = "/test.TestService/Call"
+)
+
+// TestServiceClient is the client API for TestService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type TestServiceClient interface {
+	Call(ctx context.Context, in *CallReq, opts ...grpc.CallOption) (*CallRsp, error)
+}
+
+type testServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewTestServiceClient(cc grpc.ClientConnInterface) TestServiceClient {
+	return &testServiceClient{cc}
+}
+
+func (c *testServiceClient) Call(ctx context.Context, in *CallReq, opts ...grpc.CallOption) (*CallRsp, error) {
+	out := new(CallRsp)
+	err := c.cc.Invoke(ctx, TestService_Call_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// TestServiceServer is the server API for TestService service.
+// All implementations must embed UnimplementedTestServiceServer
+// for forward compatibility
+type TestServiceServer interface {
+	Call(context.Context, *CallReq) (*CallRsp, error)
+	mustEmbedUnimplementedTestServiceServer()
+}
+
+// UnimplementedTestServiceServer must be embedded to have forward compatible implementations.
+type UnimplementedTestServiceServer struct {
+}
+
+func (UnimplementedTestServiceServer) Call(context.Context, *CallReq) (*CallRsp, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Call not implemented")
+}
+func (UnimplementedTestServiceServer) mustEmbedUnimplementedTestServiceServer() {}
+
+// UnsafeTestServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to TestServiceServer will
+// result in compilation errors.
+type UnsafeTestServiceServer interface {
+	mustEmbedUnimplementedTestServiceServer()
+}
+
+func RegisterTestServiceServer(s grpc.ServiceRegistrar, srv TestServiceServer) {
+	s.RegisterService(&TestService_ServiceDesc, srv)
+}
+
+func _TestService_Call_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CallReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(TestServiceServer).Call(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: TestService_Call_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(TestServiceServer).Call(ctx, req.(*CallReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// TestService_ServiceDesc is the grpc.ServiceDesc for TestService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var TestService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "test.TestService",
+	HandlerType: (*TestServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Call",
+			Handler:    _TestService_Call_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "test.proto",
+}

reflection.go

@@ -1,488 +1,21 @@
-// +build ignore
-
-/*
- *
- * 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 reflection implements server reflection service.
-
-The service implemented is defined in:
-https://github.com/grpc/grpc/blob/master/src/proto/grpc/reflection/v1alpha/reflection.proto.
-
-To register server reflection on a gRPC server:
-	import "google.golang.org/grpc/reflection"
-
-	s := grpc.NewServer()
-	pb.RegisterYourOwnServer(s, &server{})
-
-	// Register reflection service on gRPC server.
-	reflection.Register(s)
-
-	s.Serve(lis)
-
-*/
 package grpc
 
 import (
-	"bytes"
-	"compress/gzip"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"reflect"
-	"sort"
-	"sync"
-
-	"github.com/golang/protobuf/proto"
-	dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
-	"google.golang.org/grpc/status"
+	"google.golang.org/grpc/reflection"
+	"google.golang.org/protobuf/reflect/protodesc"
 )
 
-type serverReflectionServer struct {
-	rpb.UnimplementedServerReflectionServer
-	s *grpc.Server
-
-	initSymbols  sync.Once
-	serviceNames []string
-	symbols      map[string]*dpb.FileDescriptorProto // map of fully-qualified names to files
+type Reflector interface {
+	protodesc.Resolver
+	reflection.ServiceInfoProvider
+	reflection.ExtensionResolver
 }
 
-// Register registers the server reflection service on the given gRPC server.
-func Register(s *grpc.Server) {
-	rpb.RegisterServerReflectionServer(s, &serverReflectionServer{
-		s: s,
-	})
-}
-
-// protoMessage is used for type assertion on proto messages.
-// Generated proto message implements function Descriptor(), but Descriptor()
-// is not part of interface proto.Message. This interface is needed to
-// call Descriptor().
-type protoMessage interface {
-	Descriptor() ([]byte, []int)
-}
-
-func (s *serverReflectionServer) getSymbols() (svcNames []string, symbolIndex map[string]*dpb.FileDescriptorProto) {
-	s.initSymbols.Do(func() {
-		serviceInfo := s.s.GetServiceInfo()
-
-		s.symbols = map[string]*dpb.FileDescriptorProto{}
-		s.serviceNames = make([]string, 0, len(serviceInfo))
-		processed := map[string]struct{}{}
-		for svc, info := range serviceInfo {
-			s.serviceNames = append(s.serviceNames, svc)
-			fdenc, ok := parseMetadata(info.Metadata)
-			if !ok {
-				continue
-			}
-			fd, err := decodeFileDesc(fdenc)
-			if err != nil {
-				continue
-			}
-			s.processFile(fd, processed)
-		}
-		sort.Strings(s.serviceNames)
-	})
-
-	return s.serviceNames, s.symbols
-}
-
-func (s *serverReflectionServer) processFile(fd *dpb.FileDescriptorProto, processed map[string]struct{}) {
-	filename := fd.GetName()
-	if _, ok := processed[filename]; ok {
-		return
-	}
-	processed[filename] = struct{}{}
-
-	prefix := fd.GetPackage()
-
-	for _, msg := range fd.MessageType {
-		s.processMessage(fd, prefix, msg)
-	}
-	for _, en := range fd.EnumType {
-		s.processEnum(fd, prefix, en)
-	}
-	for _, ext := range fd.Extension {
-		s.processField(fd, prefix, ext)
-	}
-	for _, svc := range fd.Service {
-		svcName := fqn(prefix, svc.GetName())
-		s.symbols[svcName] = fd
-		for _, meth := range svc.Method {
-			name := fqn(svcName, meth.GetName())
-			s.symbols[name] = fd
-		}
-	}
-
-	for _, dep := range fd.Dependency {
-		fdenc := proto.FileDescriptor(dep)
-		fdDep, err := decodeFileDesc(fdenc)
-		if err != nil {
-			continue
-		}
-		s.processFile(fdDep, processed)
-	}
-}
-
-func (s *serverReflectionServer) processMessage(fd *dpb.FileDescriptorProto, prefix string, msg *dpb.DescriptorProto) {
-	msgName := fqn(prefix, msg.GetName())
-	s.symbols[msgName] = fd
-
-	for _, nested := range msg.NestedType {
-		s.processMessage(fd, msgName, nested)
-	}
-	for _, en := range msg.EnumType {
-		s.processEnum(fd, msgName, en)
-	}
-	for _, ext := range msg.Extension {
-		s.processField(fd, msgName, ext)
-	}
-	for _, fld := range msg.Field {
-		s.processField(fd, msgName, fld)
-	}
-	for _, oneof := range msg.OneofDecl {
-		oneofName := fqn(msgName, oneof.GetName())
-		s.symbols[oneofName] = fd
-	}
-}
-
-func (s *serverReflectionServer) processEnum(fd *dpb.FileDescriptorProto, prefix string, en *dpb.EnumDescriptorProto) {
-	enName := fqn(prefix, en.GetName())
-	s.symbols[enName] = fd
-
-	for _, val := range en.Value {
-		valName := fqn(enName, val.GetName())
-		s.symbols[valName] = fd
-	}
-}
-
-func (s *serverReflectionServer) processField(fd *dpb.FileDescriptorProto, prefix string, fld *dpb.FieldDescriptorProto) {
-	fldName := fqn(prefix, fld.GetName())
-	s.symbols[fldName] = fd
-}
-
-func fqn(prefix, name string) string {
-	if prefix == "" {
-		return name
-	}
-	return prefix + "." + name
-}
-
-// fileDescForType gets the file descriptor for the given type.
-// The given type should be a proto message.
-func (s *serverReflectionServer) fileDescForType(st reflect.Type) (*dpb.FileDescriptorProto, error) {
-	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(protoMessage)
-	if !ok {
-		return nil, fmt.Errorf("failed to create message from type: %v", st)
-	}
-	enc, _ := m.Descriptor()
-
-	return decodeFileDesc(enc)
-}
-
-// decodeFileDesc does decompression and unmarshalling on the given
-// file descriptor byte slice.
-func decodeFileDesc(enc []byte) (*dpb.FileDescriptorProto, error) {
-	raw, err := decompress(enc)
-	if err != nil {
-		return nil, fmt.Errorf("failed to decompress enc: %v", err)
-	}
-
-	fd := new(dpb.FileDescriptorProto)
-	if err := proto.Unmarshal(raw, fd); err != nil {
-		return nil, fmt.Errorf("bad descriptor: %v", err)
-	}
-	return fd, nil
-}
-
-// decompress does gzip decompression.
-func decompress(b []byte) ([]byte, error) {
-	r, err := gzip.NewReader(bytes.NewReader(b))
-	if err != nil {
-		return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
-	}
-	out, err := ioutil.ReadAll(r)
-	if err != nil {
-		return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
-	}
-	return out, nil
-}
-
-func typeForName(name string) (reflect.Type, error) {
-	pt := proto.MessageType(name)
-	if pt == nil {
-		return nil, fmt.Errorf("unknown type: %q", name)
-	}
-	st := pt.Elem()
-
-	return st, nil
-}
-
-func fileDescContainingExtension(st reflect.Type, ext int32) (*dpb.FileDescriptorProto, error) {
-	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
-	if !ok {
-		return nil, fmt.Errorf("failed to create message from type: %v", st)
-	}
-
-	var extDesc *proto.ExtensionDesc
-	for id, desc := range proto.RegisteredExtensions(m) {
-		if id == ext {
-			extDesc = desc
-			break
-		}
-	}
-
-	if extDesc == nil {
-		return nil, fmt.Errorf("failed to find registered extension for extension number %v", ext)
-	}
-
-	return decodeFileDesc(proto.FileDescriptor(extDesc.Filename))
-}
-
-func (s *serverReflectionServer) allExtensionNumbersForType(st reflect.Type) ([]int32, error) {
-	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
-	if !ok {
-		return nil, fmt.Errorf("failed to create message from type: %v", st)
-	}
-
-	exts := proto.RegisteredExtensions(m)
-	out := make([]int32, 0, len(exts))
-	for id := range exts {
-		out = append(out, id)
-	}
-	return out, nil
-}
-
-// fileDescWithDependencies returns a slice of serialized fileDescriptors in
-// wire format ([]byte). The fileDescriptors will include fd and all the
-// transitive dependencies of fd with names not in sentFileDescriptors.
-func fileDescWithDependencies(fd *dpb.FileDescriptorProto, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	r := [][]byte{}
-	queue := []*dpb.FileDescriptorProto{fd}
-	for len(queue) > 0 {
-		currentfd := queue[0]
-		queue = queue[1:]
-		if sent := sentFileDescriptors[currentfd.GetName()]; len(r) == 0 || !sent {
-			sentFileDescriptors[currentfd.GetName()] = true
-			currentfdEncoded, err := proto.Marshal(currentfd)
-			if err != nil {
-				return nil, err
-			}
-			r = append(r, currentfdEncoded)
-		}
-		for _, dep := range currentfd.Dependency {
-			fdenc := proto.FileDescriptor(dep)
-			fdDep, err := decodeFileDesc(fdenc)
-			if err != nil {
-				continue
-			}
-			queue = append(queue, fdDep)
-		}
-	}
-	return r, nil
-}
-
-// fileDescEncodingByFilename finds the file descriptor for given filename,
-// finds all of its previously unsent transitive dependencies, does marshalling
-// on them, and returns the marshalled result.
-func (s *serverReflectionServer) fileDescEncodingByFilename(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	enc := proto.FileDescriptor(name)
-	if enc == nil {
-		return nil, fmt.Errorf("unknown file: %v", name)
-	}
-	fd, err := decodeFileDesc(enc)
-	if err != nil {
-		return nil, err
-	}
-	return fileDescWithDependencies(fd, sentFileDescriptors)
-}
-
-// parseMetadata finds the file descriptor bytes specified meta.
-// For SupportPackageIsVersion4, m is the name of the proto file, we
-// call proto.FileDescriptor to get the byte slice.
-// For SupportPackageIsVersion3, m is a byte slice itself.
-func parseMetadata(meta interface{}) ([]byte, bool) {
-	// Check if meta is the file name.
-	if fileNameForMeta, ok := meta.(string); ok {
-		return proto.FileDescriptor(fileNameForMeta), true
-	}
-
-	// Check if meta is the byte slice.
-	if enc, ok := meta.([]byte); ok {
-		return enc, true
-	}
-
-	return nil, false
-}
-
-// fileDescEncodingContainingSymbol finds the file descriptor containing the
-// given symbol, finds all of its previously unsent transitive dependencies,
-// does marshalling on them, and returns the marshalled result. The given symbol
-// can be a type, a service or a method.
-func (s *serverReflectionServer) fileDescEncodingContainingSymbol(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	_, symbols := s.getSymbols()
-	fd := symbols[name]
-	if fd == nil {
-		// Check if it's a type name that was not present in the
-		// transitive dependencies of the registered services.
-		if st, err := typeForName(name); err == nil {
-			fd, err = s.fileDescForType(st)
-			if err != nil {
-				return nil, err
-			}
-		}
-	}
-
-	if fd == nil {
-		return nil, fmt.Errorf("unknown symbol: %v", name)
-	}
-
-	return fileDescWithDependencies(fd, sentFileDescriptors)
-}
-
-// fileDescEncodingContainingExtension finds the file descriptor containing
-// given extension, finds all of its previously unsent transitive dependencies,
-// does marshalling on them, and returns the marshalled result.
-func (s *serverReflectionServer) fileDescEncodingContainingExtension(typeName string, extNum int32, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	st, err := typeForName(typeName)
-	if err != nil {
-		return nil, err
-	}
-	fd, err := fileDescContainingExtension(st, extNum)
-	if err != nil {
-		return nil, err
-	}
-	return fileDescWithDependencies(fd, sentFileDescriptors)
-}
-
-// allExtensionNumbersForTypeName returns all extension numbers for the given type.
-func (s *serverReflectionServer) allExtensionNumbersForTypeName(name string) ([]int32, error) {
-	st, err := typeForName(name)
-	if err != nil {
-		return nil, err
-	}
-	extNums, err := s.allExtensionNumbersForType(st)
-	if err != nil {
-		return nil, err
-	}
-	return extNums, nil
-}
-
-// ServerReflectionInfo is the reflection service handler.
-func (s *serverReflectionServer) ServerReflectionInfo(stream rpb.ServerReflection_ServerReflectionInfoServer) error {
-	sentFileDescriptors := make(map[string]bool)
-	for {
-		in, err := stream.Recv()
-		if err == io.EOF {
-			return nil
-		}
-		if err != nil {
-			return err
-		}
-
-		out := &rpb.ServerReflectionResponse{
-			ValidHost:       in.Host,
-			OriginalRequest: in,
-		}
-		switch req := in.MessageRequest.(type) {
-		case *rpb.ServerReflectionRequest_FileByFilename:
-			b, err := s.fileDescEncodingByFilename(req.FileByFilename, sentFileDescriptors)
-			if err != nil {
-				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
-					ErrorResponse: &rpb.ErrorResponse{
-						ErrorCode:    int32(codes.NotFound),
-						ErrorMessage: err.Error(),
-					},
-				}
-			} else {
-				out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
-					FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
-				}
-			}
-		case *rpb.ServerReflectionRequest_FileContainingSymbol:
-			b, err := s.fileDescEncodingContainingSymbol(req.FileContainingSymbol, sentFileDescriptors)
-			if err != nil {
-				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
-					ErrorResponse: &rpb.ErrorResponse{
-						ErrorCode:    int32(codes.NotFound),
-						ErrorMessage: err.Error(),
-					},
-				}
-			} else {
-				out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
-					FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
-				}
-			}
-		case *rpb.ServerReflectionRequest_FileContainingExtension:
-			typeName := req.FileContainingExtension.ContainingType
-			extNum := req.FileContainingExtension.ExtensionNumber
-			b, err := s.fileDescEncodingContainingExtension(typeName, extNum, sentFileDescriptors)
-			if err != nil {
-				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
-					ErrorResponse: &rpb.ErrorResponse{
-						ErrorCode:    int32(codes.NotFound),
-						ErrorMessage: err.Error(),
-					},
-				}
-			} else {
-				out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
-					FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
-				}
-			}
-		case *rpb.ServerReflectionRequest_AllExtensionNumbersOfType:
-			extNums, err := s.allExtensionNumbersForTypeName(req.AllExtensionNumbersOfType)
-			if err != nil {
-				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
-					ErrorResponse: &rpb.ErrorResponse{
-						ErrorCode:    int32(codes.NotFound),
-						ErrorMessage: err.Error(),
-					},
-				}
-			} else {
-				out.MessageResponse = &rpb.ServerReflectionResponse_AllExtensionNumbersResponse{
-					AllExtensionNumbersResponse: &rpb.ExtensionNumberResponse{
-						BaseTypeName:    req.AllExtensionNumbersOfType,
-						ExtensionNumber: extNums,
-					},
-				}
-			}
-		case *rpb.ServerReflectionRequest_ListServices:
-			svcNames, _ := s.getSymbols()
-			serviceResponses := make([]*rpb.ServiceResponse, len(svcNames))
-			for i, n := range svcNames {
-				serviceResponses[i] = &rpb.ServiceResponse{
-					Name: n,
-				}
-			}
-			out.MessageResponse = &rpb.ServerReflectionResponse_ListServicesResponse{
-				ListServicesResponse: &rpb.ListServiceResponse{
-					Service: serviceResponses,
-				},
-			}
-		default:
-			return status.Errorf(codes.InvalidArgument, "invalid MessageRequest: %v", in.MessageRequest)
-		}
-
-		if err := stream.Send(out); err != nil {
-			return err
-		}
-	}
-}
+const (
+	// ReflectV1ServiceName is the fully-qualified name of the v1 version of the reflection service.
+	ReflectV1ServiceName = "grpc.reflection.v1.ServerReflection"
+	// ReflectServiceURLPathV1 is the full path for reflection service endpoint
+	ReflectServiceURLPathV1 = "/" + ReflectV1ServiceName + "/"
+	// ReflectMethodName is the reflection service name
+	ReflectMethodName = "ServerReflectionInfo"
+)

reflection_test.go

@@ -0,0 +1,62 @@
+package grpc
+
+import (
+	"fmt"
+	"testing"
+	
+	"go.unistack.org/micro/v4/server"
+	"google.golang.org/grpc"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+type reflector struct{}
+
+func (r *reflector) FindFileByPath(path string) (protoreflect.FileDescriptor, error) {
+	fd, err := protoregistry.GlobalFiles.FindFileByPath(path)
+	if err != nil {
+		fmt.Printf("err: %v\n", err)
+		return nil, err
+	}
+	return fd, nil
+}
+
+func (r *reflector) FindDescriptorByName(name protoreflect.FullName) (protoreflect.Descriptor, error) {
+	fd, err := protoregistry.GlobalFiles.FindDescriptorByName(name)
+	if err != nil {
+		return nil, err
+	}
+	return fd, nil
+}
+
+func (r *reflector) GetServiceInfo() map[string]grpc.ServiceInfo {
+	fmt.Printf("GetServiceInfo\n")
+	return nil
+}
+
+func (r *reflector) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) {
+	fmt.Printf("FindExtensionByName field %#+v\n", field)
+	return nil, nil
+}
+
+func (r *reflector) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) {
+	fmt.Printf("FindExtensionByNumber message %#+v field %#+v\n", message, field)
+	return nil, nil
+}
+
+func (r *reflector) RangeExtensionsByMessage(message protoreflect.FullName, f func(protoreflect.ExtensionType) bool) {
+	fmt.Printf("RangeExtensionsByMessage\n")
+}
+
+func TestReflector(t *testing.T) {
+	t.Skip()
+	srv := NewServer(Reflection(&reflector{}), server.Address(":12345"))
+	if err := srv.Init(); err != nil {
+		t.Fatal(err)
+	}
+	if err := srv.Start(); err != nil {
+		t.Fatal(err)
+	}
+	t.Logf("addr %s", srv.Options().Address)
+	select {}
+}

request.go

@@ -1,20 +1,14 @@
 package grpc
 
 import (
-	"io"
-
-	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/server"
 )
 
-var (
-	_ server.Request = &rpcRequest{}
-	_ server.Message = &rpcMessage{}
-)
+var _ server.Request = &rpcRequest{}
 
 type rpcRequest struct {
-	rw          io.ReadWriter
 	payload     interface{}
 	codec       codec.Codec
 	header      metadata.Metadata
@@ -25,14 +19,6 @@ type rpcRequest struct {
 	stream      bool
 }
 
-type rpcMessage struct {
-	payload     interface{}
-	codec       codec.Codec
-	header      metadata.Metadata
-	topic       string
-	contentType string
-}
-
 func (r *rpcRequest) ContentType() string {
 	return r.contentType
 }
@@ -58,11 +44,7 @@ func (r *rpcRequest) Header() metadata.Metadata {
 }
 
 func (r *rpcRequest) Read() ([]byte, error) {
-	f := &codec.Frame{}
-	if err := r.codec.ReadBody(r.rw, f); err != nil {
-		return nil, err
-	}
-	return f.Data, nil
+	return nil, nil
 }
 
 func (r *rpcRequest) Stream() bool {
@@ -72,23 +54,3 @@ func (r *rpcRequest) Stream() bool {
 func (r *rpcRequest) Body() interface{} {
 	return r.payload
 }
-
-func (r *rpcMessage) ContentType() string {
-	return r.contentType
-}
-
-func (r *rpcMessage) Topic() string {
-	return r.topic
-}
-
-func (r *rpcMessage) Body() interface{} {
-	return r.payload
-}
-
-func (r *rpcMessage) Header() metadata.Metadata {
-	return r.header
-}
-
-func (r *rpcMessage) Codec() codec.Codec {
-	return r.codec
-}

response.go

@@ -1,17 +1,14 @@
 package grpc
 
 import (
-	"io"
-
-	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/server"
 )
 
 var _ server.Response = &rpcResponse{}
 
 type rpcResponse struct {
-	rw     io.ReadWriter
 	header metadata.Metadata
 	codec  codec.Codec
 }
@@ -27,8 +24,5 @@ func (r *rpcResponse) WriteHeader(hdr metadata.Metadata) {
 }
 
 func (r *rpcResponse) Write(b []byte) error {
-	return r.codec.Write(r.rw, &codec.Message{
-		Header: r.header,
-		Body:   b,
-	}, nil)
+	return nil
 }

server.go

@@ -14,7 +14,7 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 )
 
 // Precompute the reflect type for error. Can't use error directly
@@ -47,8 +47,8 @@ type rServer struct {
 
 // Is this an exported - upper case - name?
 func isExported(name string) bool {
-	rune, _ := utf8.DecodeRuneInString(name)
-	return unicode.IsUpper(rune)
+	r, _ := utf8.DecodeRuneInString(name)
+	return unicode.IsUpper(r)
 }
 
 // Is this type exported or a builtin?
@@ -123,43 +123,43 @@ func prepareEndpoint(method reflect.Method) (*methodType, error) {
 	return &methodType{method: method, ArgType: argType, ReplyType: replyType, ContextType: contextType, stream: stream}, nil
 }
 
-func (server *rServer) register(rcvr interface{}) error {
-	server.mu.Lock()
-	defer server.mu.Unlock()
-	if server.serviceMap == nil {
-		server.serviceMap = make(map[string]*service)
+func (s *rServer) register(rcvr interface{}) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.serviceMap == nil {
+		s.serviceMap = make(map[string]*service)
 	}
-	s := &service{}
-	s.typ = reflect.TypeOf(rcvr)
-	s.rcvr = reflect.ValueOf(rcvr)
-	sname := reflect.Indirect(s.rcvr).Type().Name()
+	srv := &service{}
+	srv.typ = reflect.TypeOf(rcvr)
+	srv.rcvr = reflect.ValueOf(rcvr)
+	sname := reflect.Indirect(srv.rcvr).Type().Name()
 	if sname == "" {
-		return fmt.Errorf("rpc: no service name for type %v", s.typ.String())
+		return fmt.Errorf("rpc: no service name for type %v", srv.typ.String())
 	}
 	if !isExported(sname) {
 		return fmt.Errorf("rpc Register: type %s is not exported", sname)
 	}
-	if _, present := server.serviceMap[sname]; present {
-		return fmt.Errorf("rpc: service already defined: " + sname)
+	if _, present := s.serviceMap[sname]; present {
+		return fmt.Errorf("rpc: service already defined: %s", sname)
 	}
-	s.name = sname
-	s.method = make(map[string]*methodType)
+	srv.name = sname
+	srv.method = make(map[string]*methodType)
 
 	// Install the methods
-	for m := 0; m < s.typ.NumMethod(); m++ {
-		method := s.typ.Method(m)
+	for m := 0; m < srv.typ.NumMethod(); m++ {
+		method := srv.typ.Method(m)
 		mt, err := prepareEndpoint(method)
 		if mt != nil && err == nil {
-			s.method[method.Name] = mt
+			srv.method[method.Name] = mt
 		} else if err != nil {
 			return err
 		}
 	}
 
-	if len(s.method) == 0 {
+	if len(srv.method) == 0 {
 		return fmt.Errorf("rpc Register: type %s has no exported methods of suitable type", sname)
 	}
-	server.serviceMap[s.name] = s
+	s.serviceMap[srv.name] = srv
 	return nil
 }
 

stream.go

@@ -3,7 +3,7 @@ package grpc
 import (
 	"context"
 
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 	"google.golang.org/grpc"
 )
 

subscriber.go

@@ -1,231 +0,0 @@
-package grpc
-
-import (
-	"context"
-	"fmt"
-	"reflect"
-	"runtime/debug"
-	"strings"
-
-	"go.unistack.org/micro/v3/broker"
-	"go.unistack.org/micro/v3/errors"
-	"go.unistack.org/micro/v3/logger"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/register"
-	"go.unistack.org/micro/v3/server"
-)
-
-type handler struct {
-	reqType reflect.Type
-	ctxType reflect.Type
-	method  reflect.Value
-}
-
-type subscriber struct {
-	topic      string
-	rcvr       reflect.Value
-	typ        reflect.Type
-	subscriber interface{}
-	handlers   []*handler
-	endpoints  []*register.Endpoint
-	opts       server.SubscriberOptions
-}
-
-func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOption) server.Subscriber {
-	options := server.NewSubscriberOptions(opts...)
-
-	var endpoints []*register.Endpoint
-	var handlers []*handler
-
-	if typ := reflect.TypeOf(sub); typ.Kind() == reflect.Func {
-		h := &handler{
-			method: reflect.ValueOf(sub),
-		}
-
-		switch typ.NumIn() {
-		case 1:
-			h.reqType = typ.In(0)
-		case 2:
-			h.ctxType = typ.In(0)
-			h.reqType = typ.In(1)
-		}
-
-		handlers = append(handlers, h)
-
-		endpoints = append(endpoints, &register.Endpoint{
-			Name:    "Func",
-			Request: register.ExtractSubValue(typ),
-			Metadata: map[string]string{
-				"topic":      topic,
-				"subscriber": "true",
-			},
-		})
-	} else {
-		hdlr := reflect.ValueOf(sub)
-		name := reflect.Indirect(hdlr).Type().Name()
-
-		for m := 0; m < typ.NumMethod(); m++ {
-			method := typ.Method(m)
-			h := &handler{
-				method: method.Func,
-			}
-
-			switch method.Type.NumIn() {
-			case 2:
-				h.reqType = method.Type.In(1)
-			case 3:
-				h.ctxType = method.Type.In(1)
-				h.reqType = method.Type.In(2)
-			}
-
-			handlers = append(handlers, h)
-
-			endpoints = append(endpoints, &register.Endpoint{
-				Name:    name + "." + method.Name,
-				Request: register.ExtractSubValue(method.Type),
-				Metadata: map[string]string{
-					"topic":      topic,
-					"subscriber": "true",
-				},
-			})
-		}
-	}
-
-	return &subscriber{
-		rcvr:       reflect.ValueOf(sub),
-		typ:        reflect.TypeOf(sub),
-		topic:      topic,
-		subscriber: sub,
-		handlers:   handlers,
-		endpoints:  endpoints,
-		opts:       options,
-	}
-}
-
-func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broker.Handler {
-	return func(p broker.Event) (err error) {
-		defer func() {
-			if r := recover(); r != nil {
-				if g.opts.Logger.V(logger.ErrorLevel) {
-					g.opts.Logger.Error(g.opts.Context, "panic recovered: ", r)
-					g.opts.Logger.Error(g.opts.Context, string(debug.Stack()))
-				}
-				err = errors.InternalServerError(g.opts.Name+".subscriber", "panic recovered: %v", r)
-			}
-		}()
-
-		msg := p.Message()
-		// if we don't have headers, create empty map
-		if msg.Header == nil {
-			msg.Header = make(map[string]string)
-		}
-
-		ct := msg.Header["Content-Type"]
-		if len(ct) == 0 {
-			msg.Header["Content-Type"] = DefaultContentType
-			ct = DefaultContentType
-		}
-		cf, err := g.newCodec(ct)
-		if err != nil {
-			return err
-		}
-
-		hdr := make(map[string]string, len(msg.Header))
-		for k, v := range msg.Header {
-			if k == "Content-Type" {
-				continue
-			}
-			hdr[k] = v
-		}
-
-		ctx := metadata.NewIncomingContext(sb.opts.Context, hdr)
-
-		results := make(chan error, len(sb.handlers))
-
-		for i := 0; i < len(sb.handlers); i++ {
-			handler := sb.handlers[i]
-
-			var isVal bool
-			var req reflect.Value
-
-			if handler.reqType.Kind() == reflect.Ptr {
-				req = reflect.New(handler.reqType.Elem())
-			} else {
-				req = reflect.New(handler.reqType)
-				isVal = true
-			}
-			if isVal {
-				req = req.Elem()
-			}
-
-			if err = cf.Unmarshal(msg.Body, req.Interface()); err != nil {
-				return err
-			}
-
-			fn := func(ctx context.Context, msg server.Message) error {
-				var vals []reflect.Value
-				if sb.typ.Kind() != reflect.Func {
-					vals = append(vals, sb.rcvr)
-				}
-				if handler.ctxType != nil {
-					vals = append(vals, reflect.ValueOf(ctx))
-				}
-
-				vals = append(vals, reflect.ValueOf(msg.Body()))
-
-				returnValues := handler.method.Call(vals)
-				if rerr := returnValues[0].Interface(); rerr != nil {
-					return rerr.(error)
-				}
-				return nil
-			}
-
-			for i := len(opts.SubWrappers); i > 0; i-- {
-				fn = opts.SubWrappers[i-1](fn)
-			}
-
-			if g.wg != nil {
-				g.wg.Add(1)
-			}
-			go func() {
-				if g.wg != nil {
-					defer g.wg.Done()
-				}
-				cerr := fn(ctx, &rpcMessage{
-					topic:       sb.topic,
-					contentType: ct,
-					payload:     req.Interface(),
-					header:      msg.Header,
-				})
-				results <- cerr
-			}()
-		}
-		var errors []string
-		for i := 0; i < len(sb.handlers); i++ {
-			if rerr := <-results; rerr != nil {
-				errors = append(errors, rerr.Error())
-			}
-		}
-		if len(errors) > 0 {
-			err = fmt.Errorf("subscriber error: %s", strings.Join(errors, "\n"))
-		}
-
-		return err
-	}
-}
-
-func (s *subscriber) Topic() string {
-	return s.topic
-}
-
-func (s *subscriber) Subscriber() interface{} {
-	return s.subscriber
-}
-
-func (s *subscriber) Endpoints() []*register.Endpoint {
-	return s.endpoints
-}
-
-func (s *subscriber) Options() server.SubscriberOptions {
-	return s.opts
-}

util_test.go

@@ -26,6 +26,7 @@ func TestServiceMethod(t *testing.T) {
 		if err != nil && test.err == true {
 			continue
 		}
+		t.Logf("input %s service %s method %s", test.input, service, method)
 		// unexpected error
 		if err != nil && test.err == false {
 			t.Fatalf("unexpected err %v for %+v", err, test)