Apply Code Coverage Badge

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

.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

@@ -3,10 +3,10 @@ name: lint
 on:
   pull_request:
     types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
 
 jobs:
   lint:
@@ -20,10 +20,10 @@ jobs:
       uses: actions/setup-go@v5
       with:
         cache-dependency-path: "**/*.sum"
-        go-version: 'stable' 
+        go-version: 'stable'
     - name: setup deps
       run: go get -v ./...
     - name: run lint
-      uses: https://github.com/golangci/golangci-lint-action@v6
+      uses: golangci/golangci-lint-action@v6
       with:
         version: 'latest'

.github/workflows/job_test.yml

@@ -3,15 +3,12 @@ name: test
 on:
   pull_request:
     types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
+    branches: [ master, v3, v4 ]
   push:
-    branches:
-    - master
-    - v3
-    - v4
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
 
 jobs:
   test:

.github/workflows/job_tests.yml

@@ -3,15 +3,12 @@ name: test
 on:
   pull_request:
     types: [opened, reopened, synchronize]
-    branches:
-    - master
-    - v3
-    - v4
+    branches: [ master, v3, v4 ]
   push:
-    branches:
-    - master
-    - v3
-    - v4
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
 
 jobs:
   test:
@@ -35,19 +32,19 @@ jobs:
         go-version: 'stable'
     - name: setup go work
       env:
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
+        GOWORK: ${{ github.workspace }}/go.work
       run: |
         go work init
         go work use .
         go work use micro-tests
     - name: setup deps
       env:
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
+        GOWORK: ${{ github.workspace }}/go.work
       run: go get -v ./...
     - name: run tests
       env:
         INTEGRATION_TESTS: yes
-        GOWORK: /workspace/${{ github.repository_owner }}/go.work
+        GOWORK: ${{ github.workspace }}/go.work
       run: |
         cd micro-tests
         go test -mod readonly -v ./... || true

.golangci.yml

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

README.md

@@ -0,0 +1,2 @@
+# micro-meter-prometheus
+![Coverage](https://img.shields.io/badge/Coverage-33.0%25-yellow)

go.mod

@@ -2,7 +2,6 @@ module go.unistack.org/micro-meter-prometheus/v3
 
 go 1.22.0
 
-
 require (
 	github.com/prometheus/client_golang v1.21.0
 	github.com/prometheus/client_model v0.6.1

prometheus.go

@@ -26,7 +26,7 @@ type prometheusMeter struct {
 	gauge        map[string]*gauges
 	histogram    map[string]*histograms
 	summary      map[string]*summaries
-	sync.Mutex
+	mu           *sync.Mutex
 }
 
 type counters struct {
@@ -79,6 +79,7 @@ func NewMeter(opts ...meter.Option) *prometheusMeter {
 		gauge:        make(map[string]*gauges),
 		histogram:    make(map[string]*histograms),
 		summary:      make(map[string]*summaries),
+		mu:           &sync.Mutex{},
 	}
 }
 
@@ -100,8 +101,8 @@ func (m *prometheusMeter) Name() string {
 }
 
 func (m *prometheusMeter) Counter(name string, labels ...string) meter.Counter {
-	m.Lock()
-	defer m.Unlock()
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	nm := m.buildMetric(name)
 	labels = append(m.opts.Labels, labels...)
 	cd, ok := m.counter[nm]
@@ -123,8 +124,8 @@ func (m *prometheusMeter) Counter(name string, labels ...string) meter.Counter {
 }
 
 func (m *prometheusMeter) FloatCounter(name string, labels ...string) meter.FloatCounter {
-	m.Lock()
-	defer m.Unlock()
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	nm := m.buildMetric(name)
 	labels = append(m.opts.Labels, labels...)
 	cd, ok := m.floatCounter[nm]
@@ -146,8 +147,8 @@ func (m *prometheusMeter) FloatCounter(name string, labels ...string) meter.Floa
 }
 
 func (m *prometheusMeter) Gauge(name string, fn func() float64, labels ...string) meter.Gauge {
-	m.Lock()
-	defer m.Unlock()
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	nm := m.buildMetric(name)
 	labels = append(m.opts.Labels, labels...)
 	cd, ok := m.gauge[nm]
@@ -169,8 +170,8 @@ func (m *prometheusMeter) Gauge(name string, fn func() float64, labels ...string
 }
 
 func (m *prometheusMeter) Histogram(name string, labels ...string) meter.Histogram {
-	m.Lock()
-	defer m.Unlock()
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	nm := m.buildMetric(name)
 	labels = append(m.opts.Labels, labels...)
 	cd, ok := m.histogram[nm]
@@ -192,8 +193,8 @@ func (m *prometheusMeter) Histogram(name string, labels ...string) meter.Histogr
 }
 
 func (m *prometheusMeter) Summary(name string, labels ...string) meter.Summary {
-	m.Lock()
-	defer m.Unlock()
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	nm := m.buildMetric(name)
 	labels = append(m.opts.Labels, labels...)
 	cd, ok := m.summary[nm]
@@ -215,8 +216,8 @@ func (m *prometheusMeter) Summary(name string, labels ...string) meter.Summary {
 }
 
 func (m *prometheusMeter) SummaryExt(name string, window time.Duration, quantiles []float64, labels ...string) meter.Summary {
-	m.Lock()
-	defer m.Unlock()
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	nm := m.buildMetric(name)
 	labels = append(m.opts.Labels, labels...)
 	cd, ok := m.summary[nm]
@@ -277,6 +278,8 @@ func (m *prometheusMeter) Write(w io.Writer, opts ...meter.Option) error {
 
 	enc := expfmt.NewEncoder(w, expfmt.NewFormat(expfmt.TypeTextPlain))
 
+	m.mu.Lock()
+
 	for name, metrics := range m.counter {
 		mf := &dto.MetricFamily{
 			Name:   newName(name),
@@ -352,6 +355,8 @@ func (m *prometheusMeter) Write(w io.Writer, opts ...meter.Option) error {
 		mfs = append(mfs, mf)
 	}
 
+	m.mu.Unlock()
+
 	for _, mf := range mfs {
 		_ = enc.Encode(mf)
 	}
@@ -370,6 +375,7 @@ func (m *prometheusMeter) Clone(opts ...meter.Option) meter.Meter {
 	}
 
 	return &prometheusMeter{
+		mu:           m.mu,
 		set:          m.set,
 		opts:         options,
 		floatCounter: m.floatCounter,