Merge pull request 'fix flout counter on clone' (#105) from clonefix into v3

Reviewed-on: #105

.github/workflows/autoapprove.yml

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

.github/workflows/automerge.yml

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

.github/workflows/build.yml

@@ -3,19 +3,20 @@ on:
  push:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.github/workflows/codeql-analysis.yml

@@ -43,14 +43,14 @@ jobs:
 
     steps:
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     # Initializes the CodeQL tools for scanning.
     - name: init
-      uses: github/codeql-action/init@v1
+      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.
@@ -61,7 +61,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -75,4 +75,4 @@ jobs:
     #   make release
 
     - name: analyze
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -1,4 +1,4 @@
-name: "prautomerge"
+name: "dependabot-automerge"
 
 on:
   pull_request_target:
@@ -9,21 +9,17 @@ permissions:
   contents: write
 
 jobs:
-  dependabot:
+  automerge:
     runs-on: ubuntu-latest
-    if: ${{ github.actor == 'dependabot[bot]' }}
+    if: github.actor == 'dependabot[bot]'
     steps:
       - name: metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.1.1
+        uses: dependabot/fetch-metadata@v1.3.6
         with:
           github-token: "${{ secrets.TOKEN }}"
-      - name: approve
-        run: gh pr review --approve "$PR_URL"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          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:

.github/workflows/pr.yml

@@ -3,19 +3,20 @@ on:
   pull_request:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

go.mod

@@ -3,8 +3,8 @@ module go.unistack.org/micro-meter-prometheus/v3
 go 1.16
 
 require (
-	github.com/prometheus/client_golang v1.12.0
+	github.com/prometheus/client_golang v1.14.0
-	github.com/prometheus/client_model v0.2.0
+	github.com/prometheus/client_model v0.3.0
-	github.com/prometheus/common v0.32.1
+	github.com/prometheus/common v0.39.0
-	go.unistack.org/micro/v3 v3.8.16
+	go.unistack.org/micro/v3 v3.10.14
 )

go.sum

@@ -19,6 +19,7 @@ cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvf
 cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
 cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
+cloud.google.com/go/compute/metadata v0.2.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
@@ -53,7 +54,6 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -64,12 +64,14 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
+github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
+github.com/go-kit/log v0.2.1/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
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+github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang-jwt/jwt/v4 v4.2.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -108,8 +110,9 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
@@ -126,7 +129,7 @@ github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5m
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
-github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
+github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK2O4oXg=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
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@@ -141,10 +144,12 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxv
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
+github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
+github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
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@@ -152,7 +157,6 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
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-github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
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@@ -162,52 +166,60 @@ github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
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 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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@@ -238,6 +250,7 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
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@@ -266,14 +279,21 @@ golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2/go.mod h1:qpuaurCH72eLCgpAm/
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@@ -283,6 +303,8 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -318,15 +340,24 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -370,10 +401,10 @@ golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roY
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-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
@@ -397,6 +428,7 @@ google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7
 google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
@@ -450,12 +482,14 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -463,6 +497,9 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 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/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/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 v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

prometheus.go

@@ -2,6 +2,7 @@ package prometheus
 
 import (
 	"fmt"
+	"hash/fnv"
 	"io"
 	"sync"
 	"time"
@@ -13,26 +14,58 @@ import (
 	"go.unistack.org/micro/v3/meter"
 )
 
+var _ meter.Meter = &prometheusMeter{}
+
 type prometheusMeter struct {
 	opts         meter.Options
 	set          prometheus.Registerer
-	counter      map[string]prometheusCounter
+	counter      map[string]*counters
-	floatCounter map[string]prometheusFloatCounter
+	floatCounter map[string]*floatCounters
-	gauge        map[string]prometheusGauge
+	gauge        map[string]*gauges
-	histogram    map[string]prometheusHistogram
+	histogram    map[string]*histograms
-	summary      map[string]prometheusSummary
+	summary      map[string]*summaries
 	sync.Mutex
 }
 
-func NewMeter(opts ...meter.Option) meter.Meter {
+type counters struct {
+	cs map[uint64]*prometheusCounter
+}
+
+type gauges struct {
+	cs map[uint64]*prometheusGauge
+}
+
+type histograms struct {
+	cs map[uint64]*prometheusHistogram
+}
+
+type summaries struct {
+	cs map[uint64]*prometheusSummary
+}
+
+type floatCounters struct {
+	cs map[uint64]*prometheusFloatCounter
+}
+
+func newFloat64(v float64) *float64 {
+	nv := v
+	return &nv
+}
+
+func newString(v string) *string {
+	nv := v
+	return &nv
+}
+
+func NewMeter(opts ...meter.Option) *prometheusMeter {
 	return &prometheusMeter{
-		set:          prometheus.DefaultRegisterer,
+		set:          prometheus.NewRegistry(), // prometheus.DefaultRegisterer,
 		opts:         meter.NewOptions(opts...),
-		counter:      make(map[string]prometheusCounter),
+		counter:      make(map[string]*counters),
-		floatCounter: make(map[string]prometheusFloatCounter),
+		floatCounter: make(map[string]*floatCounters),
-		gauge:        make(map[string]prometheusGauge),
+		gauge:        make(map[string]*gauges),
-		histogram:    make(map[string]prometheusHistogram),
+		histogram:    make(map[string]*histograms),
-		summary:      make(map[string]prometheusSummary),
+		summary:      make(map[string]*summaries),
 	}
 }
 
@@ -54,9 +87,8 @@ func (m *prometheusMeter) buildMetric(name string, labels ...string) string {
 		return meter.BuildName(name, nlabels...)
 	}
 
-	for idx := 0; idx < nl; idx++ {
+	for idx := 0; idx < nl; idx += 2 {
 		nlabels[idx] = m.opts.LabelPrefix + nlabels[idx]
-		idx++
 	}
 	return meter.BuildName(name, nlabels...)
 }
@@ -69,18 +101,16 @@ func (m *prometheusMeter) buildName(name string) string {
 }
 
 func (m *prometheusMeter) buildLabels(labels ...string) []string {
-	nl := len(m.opts.Labels) + len(labels)
+	nl := len(labels)
 	if nl == 0 {
 		return nil
 	}
 
 	nlabels := make([]string, 0, nl)
-	nlabels = append(nlabels, m.opts.Labels...)
-	nlabels = append(nlabels, labels...)
 
-	for idx := 0; idx < nl; idx++ {
+	for idx := 0; idx < nl; idx += 2 {
-		nlabels[idx] = m.opts.LabelPrefix + nlabels[idx]
+		nlabels = append(nlabels, m.opts.LabelPrefix+labels[idx])
-		idx++
+		nlabels = append(nlabels, labels[idx+1])
 	}
 	return nlabels
 }
@@ -89,114 +119,149 @@ func (m *prometheusMeter) Name() string {
 	return m.opts.Name
 }
 
-func (m *prometheusMeter) mapLabels(labels ...string) map[string]string {
-	labels = m.buildLabels(labels...)
-	elementMap := make(map[string]string, len(labels)/2)
-	for idx := 0; idx < len(labels); idx++ {
-		elementMap[labels[idx]] = labels[idx+1]
-		idx++
-	}
-	return elementMap
-}
-
 func (m *prometheusMeter) Counter(name string, labels ...string) meter.Counter {
 	m.Lock()
 	defer m.Unlock()
-
 	nm := m.buildName(name)
-	c, ok := m.counter[nm]
+	labels = m.buildLabels(append(m.opts.Labels, labels...)...)
+	cd, ok := m.counter[nm]
+	h := newHash(labels)
 	if !ok {
-		nc := prometheus.NewGauge(prometheus.GaugeOpts{Name: nm, ConstLabels: m.mapLabels(labels...)})
+		cd = &counters{cs: make(map[uint64]*prometheusCounter)}
-		m.set.MustRegister(nc)
+		c := &prometheusCounter{c: prometheus.NewGauge(prometheus.GaugeOpts{Name: nm}), labels: labels}
-		c = prometheusCounter{c: nc}
+		cd.cs[h] = c
-		m.counter[nm] = c
+		m.counter[nm] = cd
+		return c
+	}
+	c, ok := cd.cs[h]
+	if !ok {
+		c = &prometheusCounter{c: prometheus.NewGauge(prometheus.GaugeOpts{Name: nm}), labels: labels}
+		cd.cs[h] = c
+		m.counter[nm] = cd
 	}
-
 	return c
 }
 
 func (m *prometheusMeter) FloatCounter(name string, labels ...string) meter.FloatCounter {
 	m.Lock()
 	defer m.Unlock()
-
 	nm := m.buildName(name)
-	c, ok := m.floatCounter[nm]
+	labels = m.buildLabels(append(m.opts.Labels, labels...)...)
+	cd, ok := m.floatCounter[nm]
+	h := newHash(labels)
 	if !ok {
-		nc := prometheus.NewGauge(prometheus.GaugeOpts{Name: nm, ConstLabels: m.mapLabels(labels...)})
+		cd = &floatCounters{cs: make(map[uint64]*prometheusFloatCounter)}
-		m.set.MustRegister(nc)
+		c := &prometheusFloatCounter{c: prometheus.NewGauge(prometheus.GaugeOpts{Name: nm}), labels: labels}
-		c = prometheusFloatCounter{c: nc}
+		cd.cs[h] = c
-		m.floatCounter[nm] = c
+		m.floatCounter[nm] = cd
+		return c
+	}
+	c, ok := cd.cs[h]
+	if !ok {
+		c = &prometheusFloatCounter{c: prometheus.NewGauge(prometheus.GaugeOpts{Name: nm}), labels: labels}
+		cd.cs[h] = c
+		m.floatCounter[nm] = cd
 	}
-
 	return c
 }
 
 func (m *prometheusMeter) Gauge(name string, fn func() float64, labels ...string) meter.Gauge {
 	m.Lock()
 	defer m.Unlock()
-
 	nm := m.buildName(name)
-	c, ok := m.gauge[nm]
+	labels = m.buildLabels(append(m.opts.Labels, labels...)...)
+	cd, ok := m.gauge[nm]
+	h := newHash(labels)
 	if !ok {
-		nc := prometheus.NewGauge(prometheus.GaugeOpts{Name: nm, ConstLabels: m.mapLabels(labels...)})
+		cd = &gauges{cs: make(map[uint64]*prometheusGauge)}
-		m.set.MustRegister(nc)
+		c := &prometheusGauge{c: prometheus.NewGauge(prometheus.GaugeOpts{Name: nm}), labels: labels}
-		c = prometheusGauge{c: nc}
+		cd.cs[h] = c
-		m.gauge[nm] = c
+		m.gauge[nm] = cd
+		return c
+	}
+	c, ok := cd.cs[h]
+	if !ok {
+		c = &prometheusGauge{c: prometheus.NewGauge(prometheus.GaugeOpts{Name: nm}), labels: labels}
+		cd.cs[h] = c
+		m.gauge[nm] = cd
 	}
-
 	return c
 }
 
 func (m *prometheusMeter) Histogram(name string, labels ...string) meter.Histogram {
 	m.Lock()
 	defer m.Unlock()
-
 	nm := m.buildName(name)
-	c, ok := m.histogram[nm]
+	labels = m.buildLabels(append(m.opts.Labels, labels...)...)
+	cd, ok := m.histogram[nm]
+	h := newHash(labels)
 	if !ok {
-		nc := prometheus.NewHistogram(prometheus.HistogramOpts{Name: nm, ConstLabels: m.mapLabels(labels...)})
+		cd = &histograms{cs: make(map[uint64]*prometheusHistogram)}
-		m.set.MustRegister(nc)
+		c := &prometheusHistogram{c: prometheus.NewHistogram(prometheus.HistogramOpts{Name: nm}), labels: labels}
-		c = prometheusHistogram{c: nc}
+		cd.cs[h] = c
-		m.histogram[nm] = c
+		m.histogram[nm] = cd
+		return c
+	}
+	c, ok := cd.cs[h]
+	if !ok {
+		c = &prometheusHistogram{c: prometheus.NewHistogram(prometheus.HistogramOpts{Name: nm}), labels: labels}
+		cd.cs[h] = c
+		m.histogram[nm] = cd
 	}
-
 	return c
 }
 
 func (m *prometheusMeter) Summary(name string, labels ...string) meter.Summary {
 	m.Lock()
 	defer m.Unlock()
-
 	nm := m.buildName(name)
-	c, ok := m.summary[nm]
+	labels = m.buildLabels(append(m.opts.Labels, labels...)...)
+	cd, ok := m.summary[nm]
+	h := newHash(labels)
 	if !ok {
-		nc := prometheus.NewSummary(prometheus.SummaryOpts{Name: nm, ConstLabels: m.mapLabels(labels...)})
+		cd = &summaries{cs: make(map[uint64]*prometheusSummary)}
-		m.set.MustRegister(nc)
+		c := &prometheusSummary{c: prometheus.NewSummary(prometheus.SummaryOpts{Name: nm}), labels: labels}
-		c = prometheusSummary{c: nc}
+		cd.cs[h] = c
-		m.summary[nm] = c
+		m.summary[nm] = cd
+		return c
+	}
+	c, ok := cd.cs[h]
+	if !ok {
+		c = &prometheusSummary{c: prometheus.NewSummary(prometheus.SummaryOpts{Name: nm}), labels: labels}
+		cd.cs[h] = c
+		m.summary[nm] = cd
 	}
-
 	return c
 }
 
 func (m *prometheusMeter) SummaryExt(name string, window time.Duration, quantiles []float64, labels ...string) meter.Summary {
 	m.Lock()
 	defer m.Unlock()
-
 	nm := m.buildName(name)
-	c, ok := m.summary[nm]
+	labels = m.buildLabels(append(m.opts.Labels, labels...)...)
+	cd, ok := m.summary[nm]
+	h := newHash(labels)
 	if !ok {
-		nc := prometheus.NewSummary(prometheus.SummaryOpts{
+		cd = &summaries{cs: make(map[uint64]*prometheusSummary)}
+		c := &prometheusSummary{c: prometheus.NewSummary(prometheus.SummaryOpts{
 			Name:       nm,
-			ConstLabels: m.mapLabels(labels...),
 			MaxAge:     window,
 			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
-		})
+		}), labels: labels}
-		m.set.MustRegister(nc)
+		cd.cs[h] = c
-		c = prometheusSummary{c: nc}
+		m.summary[nm] = cd
-		m.summary[nm] = c
+		return c
+	}
+	c, ok := cd.cs[h]
+	if !ok {
+		c = &prometheusSummary{c: prometheus.NewSummary(prometheus.SummaryOpts{
+			Name:       nm,
+			MaxAge:     window,
+			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
+		}), labels: labels}
+		cd.cs[h] = c
+		m.summary[nm] = cd
 	}
-
 	return c
 }
 
@@ -204,7 +269,6 @@ func (m *prometheusMeter) Init(opts ...meter.Option) error {
 	for _, o := range opts {
 		o(&m.opts)
 	}
-
 	return nil
 }
 
@@ -230,6 +294,82 @@ func (m *prometheusMeter) Write(w io.Writer, opts ...meter.Option) error {
 	}
 
 	enc := expfmt.NewEncoder(w, expfmt.FmtText)
+
+	for name, metrics := range m.counter {
+		mf := &dto.MetricFamily{
+			Name:   newString(name),
+			Type:   dto.MetricType_GAUGE.Enum(),
+			Metric: make([]*dto.Metric, 0, len(metrics.cs)),
+		}
+		for _, c := range metrics.cs {
+			m := &dto.Metric{}
+			_ = c.c.Write(m)
+			fillMetric(m, c.labels)
+			mf.Metric = append(mf.Metric, m)
+		}
+		mfs = append(mfs, mf)
+	}
+
+	for name, metrics := range m.gauge {
+		mf := &dto.MetricFamily{
+			Name:   newString(name),
+			Type:   dto.MetricType_GAUGE.Enum(),
+			Metric: make([]*dto.Metric, 0, len(metrics.cs)),
+		}
+		for _, c := range metrics.cs {
+			m := &dto.Metric{}
+			_ = c.c.Write(m)
+			fillMetric(m, c.labels)
+			mf.Metric = append(mf.Metric, m)
+		}
+		mfs = append(mfs, mf)
+	}
+
+	for name, metrics := range m.floatCounter {
+		mf := &dto.MetricFamily{
+			Name:   newString(name),
+			Type:   dto.MetricType_GAUGE.Enum(),
+			Metric: make([]*dto.Metric, 0, len(metrics.cs)),
+		}
+		for _, c := range metrics.cs {
+			m := &dto.Metric{}
+			_ = c.c.Write(m)
+			fillMetric(m, c.labels)
+			mf.Metric = append(mf.Metric, m)
+		}
+		mfs = append(mfs, mf)
+	}
+
+	for name, metrics := range m.histogram {
+		mf := &dto.MetricFamily{
+			Name:   newString(name),
+			Type:   dto.MetricType_HISTOGRAM.Enum(),
+			Metric: make([]*dto.Metric, 0, len(metrics.cs)),
+		}
+		for _, c := range metrics.cs {
+			m := &dto.Metric{}
+			_ = c.c.Write(m)
+			fillMetric(m, c.labels)
+			mf.Metric = append(mf.Metric, m)
+		}
+		mfs = append(mfs, mf)
+	}
+
+	for name, metrics := range m.summary {
+		mf := &dto.MetricFamily{
+			Name:   newString(name),
+			Type:   dto.MetricType_SUMMARY.Enum(),
+			Metric: make([]*dto.Metric, 0, len(metrics.cs)),
+		}
+		for _, c := range metrics.cs {
+			m := &dto.Metric{}
+			_ = c.c.Write(m)
+			fillMetric(m, c.labels)
+			mf.Metric = append(mf.Metric, m)
+		}
+		mfs = append(mfs, mf)
+	}
+
 	for _, mf := range mfs {
 		_ = enc.Encode(mf)
 	}
@@ -250,6 +390,7 @@ func (m *prometheusMeter) Clone(opts ...meter.Option) meter.Meter {
 	return &prometheusMeter{
 		set:          m.set,
 		opts:         options,
+		floatCounter: m.floatCounter,
 		counter:      m.counter,
 		gauge:        m.gauge,
 		histogram:    m.histogram,
@@ -276,21 +417,22 @@ func (m *prometheusMeter) Set(opts ...meter.Option) meter.Meter {
 
 type prometheusCounter struct {
 	c      prometheus.Gauge
+	labels []string
 }
 
-func (c prometheusCounter) Add(n int) {
+func (c *prometheusCounter) Add(n int) {
 	c.c.Add(float64(n))
 }
 
-func (c prometheusCounter) Dec() {
+func (c *prometheusCounter) Dec() {
 	c.c.Dec()
 }
 
-func (c prometheusCounter) Inc() {
+func (c *prometheusCounter) Inc() {
 	c.c.Inc()
 }
 
-func (c prometheusCounter) Get() uint64 {
+func (c *prometheusCounter) Get() uint64 {
 	m := &dto.Metric{}
 	if err := c.c.Write(m); err != nil {
 		return 0
@@ -298,12 +440,13 @@ func (c prometheusCounter) Get() uint64 {
 	return uint64(m.GetGauge().GetValue())
 }
 
-func (c prometheusCounter) Set(n uint64) {
+func (c *prometheusCounter) Set(n uint64) {
 	c.c.Set(float64(n))
 }
 
 type prometheusFloatCounter struct {
 	c      prometheus.Gauge
+	labels []string
 }
 
 func (c prometheusFloatCounter) Add(n float64) {
@@ -328,6 +471,7 @@ func (c prometheusFloatCounter) Sub(n float64) {
 
 type prometheusGauge struct {
 	c      prometheus.Gauge
+	labels []string
 }
 
 func (c prometheusGauge) Get() float64 {
@@ -340,6 +484,7 @@ func (c prometheusGauge) Get() float64 {
 
 type prometheusHistogram struct {
 	c      prometheus.Histogram
+	labels []string
 }
 
 func (c prometheusHistogram) Reset() {
@@ -355,6 +500,7 @@ func (c prometheusHistogram) UpdateDuration(n time.Time) {
 
 type prometheusSummary struct {
 	c      prometheus.Summary
+	labels []string
 }
 
 func (c prometheusSummary) Update(n float64) {
@@ -364,3 +510,23 @@ func (c prometheusSummary) Update(n float64) {
 func (c prometheusSummary) UpdateDuration(n time.Time) {
 	c.c.Observe(time.Since(n).Seconds())
 }
+
+func newHash(labels []string) uint64 {
+	labels = meter.BuildLabels(labels...)
+	h := fnv.New64a()
+	for _, l := range labels {
+		h.Write([]byte(l))
+	}
+	return h.Sum64()
+}
+
+func fillMetric(m *dto.Metric, labels []string) *dto.Metric {
+	m.Label = make([]*dto.LabelPair, 0, len(labels)/2)
+	for idx := 0; idx < len(labels); idx += 2 {
+		m.Label = append(m.Label, &dto.LabelPair{
+			Name:  newString(labels[idx]),
+			Value: newString(labels[idx+1]),
+		})
+	}
+	return m
+}

prometheus_test.go

@@ -13,9 +13,8 @@ import (
 
 func TestBuildName(t *testing.T) {
 	m := NewMeter()
-	im := m.(*prometheusMeter)
 	check := `micro_foo{micro_aaa="b",micro_bar="baz",micro_ccc="d"}`
-	name := im.buildMetric("foo", "bar", "baz", "aaa", "b", "ccc", "d")
+	name := m.buildMetric("foo", "bar", "baz", "aaa", "b", "ccc", "d")
 	if name != check {
 		t.Fatalf("metric name error: %s != %s", name, check)
 	}
@@ -50,3 +49,22 @@ func TestWrapper(t *testing.T) {
 		t.Fatalf("invalid metrics output: %s", buf.Bytes())
 	}
 }
+
+func TestMultiple(t *testing.T) {
+	m := NewMeter() // meter.Labels("test_key", "test_val"))
+
+	m.Counter("server", "endpoint", "ep1", "path", "/path1").Inc()
+	m.Counter("server", "endpoint", "ep1", "path", "/path1").Inc()
+
+	m.Counter("server", "endpoint", "ep2", "path", "/path2").Inc()
+	m.Counter("server", "endpoint", "ep2", "path", "/path2").Inc()
+
+	m.Counter("server", "endpoint", "ep3", "path", "/path3", "status", "success").Inc()
+
+	buf := bytes.NewBuffer(nil)
+	_ = m.Write(buf, meter.WriteProcessMetrics(false), meter.WriteFDMetrics(false))
+	if !bytes.Contains(buf.Bytes(), []byte(`micro_server{micro_endpoint="ep1",micro_path="/path1"} 2`)) {
+		// t.Fatal("XXXX")
+		t.Fatalf("invalid metrics output: %s", buf.Bytes())
+	}
+}