Add --version flag (#77)

.github/workflows/publish-image.yml

@@ -99,3 +99,4 @@ jobs:
             SOURCE_COMMIT=${{ github.sha }}
             SOURCE_BRANCH=${{ github.ref }}
             BUILD_DATE=${{ steps.date.outputs.value }}
+            BUILD_USER=github-actions

.github/workflows/release.yml

@@ -17,6 +17,8 @@ jobs:
             goos: darwin
     steps:
     - uses: actions/checkout@v2
+    - id: date
+      run: echo "::set-output name=value::$(date +%FT%TZ)"
     - uses: wangyoucao577/go-release-action@master
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
@@ -27,4 +29,5 @@ jobs:
           -X github.com/prometheus/common/version.Version=${{ github.event.release.tag_name }}
           -X github.com/prometheus/common/version.Revision=${{ github.sha }}
           -X github.com/prometheus/common/version.Branch=${{ github.ref }}
-          -X github.com/prometheus/common/version.BuildDate=${{ github.event.release.created_at }}
+          -X github.com/prometheus/common/version.BuildDate=${{ steps.date.outputs.value }}
+          -X github.com/prometheus/common/version.BuildUser=github-actions

Dockerfile

@@ -9,12 +9,14 @@ ARG VERSION
 ARG SOURCE_COMMIT
 ARG SOURCE_BRANCH
 ARG BUILD_DATE
+ARG BUILD_USER
 
 RUN GOOS=linux GOARCH=amd64 go build -o /go/bin/artifactory_exporter -ldflags " \
     -X github.com/prometheus/common/version.Version=${VERSION} \
     -X github.com/prometheus/common/version.Revision=${SOURCE_COMMIT} \
     -X github.com/prometheus/common/version.Branch=${SOURCE_BRANCH} \
-    -X github.com/prometheus/common/version.BuildDate=${BUILD_DATE}"
+    -X github.com/prometheus/common/version.BuildDate=${BUILD_DATE} \
+    -X github.com/prometheus/common/version.BuildUser=${BUILD_USER}"
 
 FROM gcr.io/distroless/base-debian11
 COPY --from=build /go/bin/artifactory_exporter /

README.md

@@ -1,8 +1,8 @@
-# JFrog Artifactory Exporter 
+# JFrog Artifactory Exporter
 
 [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/peimanja/artifactory_exporter/Build)](https://github.com/peimanja/artifactory_exporter/actions) [![Docker Build](https://img.shields.io/docker/cloud/build/peimanja/artifactory_exporter)](https://hub.docker.com/r/peimanja/artifactory_exporter/builds) [![Go Report Card](https://goreportcard.com/badge/github.com/peimanja/artifactory_exporter)](https://goreportcard.com/report/github.com/peimanja/artifactory_exporter)
 
-A [Prometheus](https://prometheus.io) exporter for [JFrog Artifactory](https://jfrog.com/artifactory) stats. 
+A [Prometheus](https://prometheus.io) exporter for [JFrog Artifactory](https://jfrog.com/artifactory) stats.
 
 
 ## Note
@@ -117,6 +117,7 @@ Flags:
       --artifactory.timeout=5s  Timeout for trying to get stats from JFrog Artifactory.
       --log.level=info          Only log messages with the given severity or above. One of: [debug, info, warn, error]
       --log.format=logfmt       Output format of log messages. One of: [logfmt, json]
+      --version                 Show application version.
 ```
 
 | Flag / Environment Variable | Required | Default | Description |

config/config.go

@@ -9,6 +9,7 @@ import (
 	"github.com/kelseyhightower/envconfig"
 	"github.com/prometheus/common/promlog"
 	"github.com/prometheus/common/promlog/flag"
+	"github.com/prometheus/common/version"
 	"gopkg.in/alecthomas/kingpin.v2"
 )
 
@@ -46,6 +47,7 @@ func NewConfig() (*Config, error) {
 	promlogConfig := &promlog.Config{}
 	flag.AddFlags(kingpin.CommandLine, promlogConfig)
 	kingpin.HelpFlag.Short('h')
+	kingpin.Version(version.Info() + " " + version.BuildContext())
 	kingpin.Parse()
 	logger := promlog.New(promlogConfig)