Add version info as build vars, expose as metrics (#259)

.github/workflows/build.yml

@@ -94,8 +94,15 @@ jobs:
           version: v1.8.3
           args: check
 
+      - name: Set current date
+        id: set_date
+        run: |
+          echo "BUILD_DATE=$(date)" >> $GITHUB_ENV
+
       - name: Build Goreleaser snapshot release
         uses: goreleaser/goreleaser-action@v2
         with:
           version: v1.8.3
-          args: release --rm-dist --skip-publish --snapshot
+          args: release --rm-dist --skip-publish --snapshot
+        env:
+          BUILD_USER: ${{ github.actor }} (via Github Actions)

.github/workflows/release.yml

@@ -35,10 +35,16 @@ jobs:
           echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin quay.io
           echo "${GITHUB_TOKEN}" | docker login docker.pkg.github.com -u helmich-bot --password-stdin
 
+      - name: Set current date
+        id: set_date
+        run: |
+          echo "BUILD_DATE=$(date)" >> $GITHUB_ENV
+          
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:
           version: v1.8.3
           args: release --rm-dist
         env:
+          BUILD_USER: ${{ github.actor }} (via Github Actions)
           GITHUB_TOKEN: ${{ secrets.githubToken }}

.goreleaser.yml

@@ -5,9 +5,19 @@ builds:
       - GO111MODULE=on
     goos:
       - linux
+      - darwin
     goarch:
       - amd64
       - arm64
+    ldflags:
+      - >
+        -s
+        -w
+        -X "github.com/prometheus/common/version.Version={{.Version}}"
+        -X "github.com/prometheus/common/version.Branch={{.Env.GITHUB_REF_NAME}}"
+        -X "github.com/prometheus/common/version.Revision={{.Env.GITHUB_SHA}}"
+        -X "github.com/prometheus/common/version.BuildUser={{ .Env.BUILD_USER }}"
+        -X "github.com/prometheus/common/version.BuildDate={{.Env.BUILD_DATE}}"
 checksum:
   name_template: 'checksums.txt'
 snapshot:

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/mitchellh/go-testing-interface v1.14.0 // indirect
 	github.com/mitchellh/mapstructure v1.3.3 // indirect
 	github.com/nxadm/tail v1.4.8
-	github.com/prometheus/client_golang v1.9.0
+	github.com/prometheus/client_golang v1.12.1
 	github.com/satyrius/gonx v1.3.1-0.20180709120835-47c52b995fe5
 	github.com/stretchr/testify v1.7.0
 	gopkg.in/mcuadros/go-syslog.v2 v2.3.0
@@ -16,11 +16,11 @@ require (
 require (
 	github.com/armon/go-metrics v0.3.4 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fatih/color v1.9.0 // indirect
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
-	github.com/golang/protobuf v1.4.3 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.1 // indirect
 	github.com/hashicorp/go-hclog v0.12.0 // indirect
 	github.com/hashicorp/go-immutable-radix v1.2.0 // indirect
@@ -36,10 +36,10 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.15.0 // indirect
-	github.com/prometheus/procfs v0.2.0 // indirect
-	golang.org/x/sys v0.0.0-20201214210602-f9fddec55a1e // indirect
-	google.golang.org/protobuf v1.23.0 // indirect
+	github.com/prometheus/common v0.34.0 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 )