update for latest micro

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

.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/build.yml

@@ -1,46 +0,0 @@
-name: build
-on:
- push:
-    branches:
-    - master
-jobs:
-  test:
-    name: test
-    runs-on: ubuntu-latest
-    steps:
-    - name: setup
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.16
-    - name: checkout
-      uses: actions/checkout@v2
-    - name: cache
-      uses: actions/cache@v2
-      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@v2
-      - name: lint
-        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.
-          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

@@ -1,75 +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 ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ master ]
-  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 repository
-      uses: actions/checkout@v2
-
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      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.
-        # 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@v1
-
-    # 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: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1

.github/workflows/dependabot-automerge.yml

@@ -1,66 +0,0 @@
-name: "prautomerge"
-
-on:
-  workflow_run:
-    workflows: ["prbuild"]
-    types:
-      - completed
-
-permissions:
-  contents: write
-  pull-requests: write
-
-jobs:
-  Dependabot-Automerge:
-    runs-on: ubuntu-latest
-    # 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: Approve Changes and Merge changes if label 'dependencies' is set
-        uses: actions/github-script@v5
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            console.log(context.payload.workflow_run);
-            
-            var labelNames = await github.paginate(
-              github.issues.listLabelsOnIssue,
-              {
-                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/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@v3
+      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

@@ -1,46 +0,0 @@
-name: prbuild
-on:
-  pull_request:
-    branches:
-    - master
-jobs:
-  test:
-    name: test
-    runs-on: ubuntu-latest
-    steps:
-    - name: setup
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.16
-    - name: checkout
-      uses: actions/checkout@v2
-    - name: cache
-      uses: actions/cache@v2
-      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@v2
-      - name: lint
-        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.
-          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

.golangci.yml

@@ -0,0 +1,5 @@
+run:
+  concurrency: 8
+  timeout: 5m
+  issues-exit-code: 1
+  tests: true

README.md

@@ -1,4 +1,5 @@
 # VictoriaMetrics
+![Coverage](https://img.shields.io/badge/Coverage-46.9%25-yellow)
 
 Wrappers are a form of middleware that can be used with go-micro services. They can wrap both the Client and Server handlers. 
 This plugin implements the HandlerWrapper interface to provide automatic prometheus metric handling

go.mod

@@ -1,8 +1,23 @@
-module go.unistack.org/micro-meter-victoriametrics/v3
+module go.unistack.org/micro-meter-victoriametrics/v4
 
-go 1.16
+go 1.24.0
+
+toolchain go1.24.4
 
 require (
-	github.com/VictoriaMetrics/metrics v1.18.0
+	github.com/VictoriaMetrics/metrics v1.40.2
-	go.unistack.org/micro/v3 v3.8.0
+	go.unistack.org/micro/v4 v4.1.22
+)
+
+require (
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/matoous/go-nanoid v1.5.1 // indirect
+	github.com/spf13/cast v1.8.0 // indirect
+	github.com/valyala/fastrand v1.1.0 // indirect
+	github.com/valyala/histogram v1.2.0 // indirect
+	go.unistack.org/micro-proto/v4 v4.1.0 // indirect
+	golang.org/x/sys v0.37.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a // indirect
+	google.golang.org/grpc v1.72.0 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
 )

go.sum

@@ -1,33 +1,48 @@
-github.com/VictoriaMetrics/metrics v1.18.0 h1:vov5NxDHRSXFbdiH4dYLYEjKLoAXXSQ7hcnG8TSD9JQ=
+github.com/VictoriaMetrics/metrics v1.40.2 h1:OVSjKcQEx6JAwGeu8/KQm9Su5qJ72TMEW4xYn5vw3Ac=
-github.com/VictoriaMetrics/metrics v1.18.0/go.mod h1:ArjwVz7WpgpegX/JpB0zpNF2h2232kErkEnzH1sxMmA=
+github.com/VictoriaMetrics/metrics v1.40.2/go.mod h1:XE4uudAAIRaJE614Tl5HMrtoEU6+GDZO4QTnNSsZRuA=
-github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
-github.com/golang-jwt/jwt/v4 v4.1.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
+github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
-github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
+github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
-github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
-github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
-github.com/unistack-org/micro-proto v0.0.9 h1:KrWLS4FUX7UAWNAilQf70uad6ZPf/0EudeddCXllRVc=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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victoriametrics.go

@@ -5,40 +5,53 @@ import (
 	"time"
 
 	"github.com/VictoriaMetrics/metrics"
-	"go.unistack.org/micro/v3/meter"
+	"go.unistack.org/micro/v4/meter"
 )
 
 type victoriametricsMeter struct {
-	set  *metrics.Set
+	set              *metrics.Set
-	opts meter.Options
+	opts             meter.Options
+	prometheusCompat bool
 }
 
 func NewMeter(opts ...meter.Option) meter.Meter {
-	return &victoriametricsMeter{set: metrics.NewSet(), opts: meter.NewOptions(opts...)}
+	m := &victoriametricsMeter{set: metrics.NewSet(), opts: meter.NewOptions(opts...)}
+	if v, ok := m.opts.Context.Value(prometheusCompatKey{}).(bool); ok && v {
+		m.prometheusCompat = v
+	}
+	return m
 }
 
 func (r *victoriametricsMeter) Name() string {
 	return r.opts.Name
 }
 
-func (r *victoriametricsMeter) buildName(name string, labels ...string) string {
+func (r *victoriametricsMeter) Unregister(name string, labels ...string) bool {
-	if len(r.opts.MetricPrefix) > 0 {
+	return r.set.UnregisterMetric(r.buildName(name, labels...))
-		name = r.opts.MetricPrefix + name
+}
-	}
 
-	if len(labels) == 0 {
+func (r *victoriametricsMeter) Clone(opts ...meter.Option) meter.Meter {
+	options := r.opts
+	for _, o := range opts {
+		o(&options)
+	}
+	m := &victoriametricsMeter{set: r.set, opts: options}
+	if v, ok := m.opts.Context.Value(prometheusCompatKey{}).(bool); ok && v {
+		m.prometheusCompat = v
+	}
+	return m
+}
+
+func (r *victoriametricsMeter) buildName(name string, labels ...string) string {
+	nl := len(r.opts.Labels) + len(labels)
+	if nl == 0 {
 		return name
 	}
 
-	if len(r.opts.LabelPrefix) == 0 {
+	nlabels := make([]string, 0, nl)
-		return meter.BuildName(name, labels...)
+	nlabels = append(nlabels, r.opts.Labels...)
-	}
+	nlabels = append(nlabels, labels...)
 
-	nlabels := make([]string, len(labels))
-	copy(nlabels, labels)
-	for idx := 0; idx <= len(nlabels)/2; idx += 2 {
-		nlabels[idx] = r.opts.LabelPrefix + nlabels[idx]
-	}
 	return meter.BuildName(name, nlabels...)
 }
 
@@ -55,6 +68,9 @@ func (r *victoriametricsMeter) Gauge(name string, f func() float64, labels ...st
 }
 
 func (r *victoriametricsMeter) Histogram(name string, labels ...string) meter.Histogram {
+	if r.prometheusCompat {
+		return r.set.GetOrCreatePrometheusHistogram(r.buildName(name, labels...))
+	}
 	return r.set.GetOrCreateHistogram(r.buildName(name, labels...))
 }
 
@@ -67,7 +83,7 @@ func (r *victoriametricsMeter) SummaryExt(name string, window time.Duration, qua
 }
 
 func (r *victoriametricsMeter) Set(opts ...meter.Option) meter.Meter {
-	m := &victoriametricsMeter{opts: r.opts}
+	m := &victoriametricsMeter{opts: r.opts, prometheusCompat: r.prometheusCompat}
 	for _, o := range opts {
 		o(&m.opts)
 	}
@@ -79,7 +95,9 @@ func (r *victoriametricsMeter) Init(opts ...meter.Option) error {
 	for _, o := range opts {
 		o(&r.opts)
 	}
-
+	if v, ok := r.opts.Context.Value(prometheusCompatKey{}).(bool); ok && v {
+		r.prometheusCompat = v
+	}
 	return nil
 }
 
@@ -106,3 +124,9 @@ func (r *victoriametricsMeter) Options() meter.Options {
 func (r *victoriametricsMeter) String() string {
 	return "victoriametrics"
 }
+
+type prometheusCompatKey struct{}
+
+func PrometheusCompat(b bool) meter.Option {
+	return meter.SetOption(prometheusCompatKey{}, b)
+}

victoriametrics_test.go

@@ -5,17 +5,29 @@ import (
 	"context"
 	"testing"
 
-	"go.unistack.org/micro/v3/client"
+	"go.unistack.org/micro/v4/client"
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v3/meter"
+	"go.unistack.org/micro/v4/meter"
-	"go.unistack.org/micro/v3/meter/wrapper"
 )
 
+func BenchmarkBuildName(b *testing.B) {
+	m := NewMeter(meter.Labels("pod", "xxx"))
+	if err := m.Init(); err != nil {
+		b.Fatal(err)
+	}
+	im := m.(*victoriametricsMeter)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		name := im.buildName("micro_foo", "bar", "baz", "aaa", "b", "ccc", "d")
+		_ = name
+	}
+}
+
 func TestBuildName(t *testing.T) {
 	m := NewMeter()
 	im := m.(*victoriametricsMeter)
-	check := `micro_foo{micro_aaa="b",micro_bar="baz"}`
+	check := `micro_foo{bar="baz",aaa="b",ccc="d"}`
-	name := im.buildName("foo", "bar", "baz", "aaa", "b")
+	name := im.buildName("micro_foo", "bar", "baz", "aaa", "b", "ccc", "d")
 	if name != check {
 		t.Fatalf("metric name error: %s != %s", name, check)
 	}
@@ -26,17 +38,12 @@ func TestBuildName(t *testing.T) {
 
 func TestWrapper(t *testing.T) {
 	m := NewMeter()
-
+	if err := m.Init(); err != nil {
-	w := wrapper.NewClientWrapper(
+		t.Fatal(err)
-		wrapper.ServiceName("svc1"),
+	}
-		wrapper.ServiceVersion("0.0.1"),
-		wrapper.ServiceID("12345"),
-		wrapper.Meter(m),
-	)
-
 	ctx := context.Background()
 
-	c := client.NewClient(client.Wrap(w))
+	c := client.NewClient(client.Meter(m))
 	if err := c.Init(); err != nil {
 		t.Fatal(err)
 	}
@@ -45,8 +52,8 @@ func TestWrapper(t *testing.T) {
 	err := c.Call(ctx, c.NewRequest("svc2", "Service.Method", req), rsp)
 	_, _ = rsp, err
 	buf := bytes.NewBuffer(nil)
-	m.Write(buf, meter.WriteProcessMetrics(false), meter.WriteFDMetrics(false))
+	_ = m.Write(buf, meter.WriteProcessMetrics(false), meter.WriteFDMetrics(false))
-	if !bytes.Contains(buf.Bytes(), []byte(`micro_client_request_inflight{micro_endpoint="svc2.Service.Method"} 0`)) {
+	if !bytes.Contains(buf.Bytes(), []byte(`micro_client_request_total{endpoint="Service.Method",status="failure",code="500"} 1`)) {
 		t.Fatalf("invalid metrics output: %s", buf.Bytes())
 	}
 }