Adds version in binary

circle.yml

@@ -6,6 +6,7 @@ machine:
   environment:
     REPO: $CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME
     DOCKER_HOST: tcp://172.17.42.1:2375
+    VERSION: v1.0.alpha.$CIRCLE_BUILD_NUM
 
 dependencies:
   pre:
@@ -27,8 +28,8 @@ deployment:
   hub:
     branch: master
     commands:
-      - ghr -t $GITHUB_TOKEN -u $CIRCLE_PROJECT_USERNAME -r $CIRCLE_PROJECT_REPONAME --prerelease v1.0.alpha.$CIRCLE_BUILD_NUM dist/
+      - ghr -t $GITHUB_TOKEN -u $CIRCLE_PROJECT_USERNAME -r $CIRCLE_PROJECT_REPONAME --prerelease ${VERSION} dist/
       - docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
       - docker push ${REPO,,}:latest
-      - docker tag ${REPO,,}:latest ${REPO,,}:v1.0.alpha.$CIRCLE_BUILD_NUM
-      - docker push ${REPO,,}:v1.0.alpha.$CIRCLE_BUILD_NUM
+      - docker tag ${REPO,,}:latest ${REPO,,}:${VERSION}
+      - docker push ${REPO,,}:${VERSION}

script/binary

@@ -8,6 +8,13 @@ fi
 
 rm -f dist/traefik
 
-# Build binaries
-CGO_ENABLED=0 go build -a -installsuffix nocgo -o dist/traefik .
+if [ -z "$VERSION" ]; then
+    VERSION=$(git rev-parse HEAD)
+fi
 
+if [ -z "$DATE" ]; then
+    DATE=$(date -u '+%Y-%m-%d_%I:%M:%S%p')
+fi
+
+# Build binaries
+CGO_ENABLED=0 go build -ldflags "-X main.Version=$VERSION -X main.BuildDate=$DATE" -a -installsuffix nocgo -o dist/traefik .

script/crossbinary

@@ -20,10 +20,17 @@ else
     OS_ARCH_ARG=($2)
 fi
 
+if [ -z "$VERSION" ]; then
+    VERSION=$(git rev-parse HEAD)
+fi
+
+if [ -z "$DATE" ]; then
+    DATE=$(date -u '+%Y-%m-%d_%I:%M:%S%p')
+fi
+
 # Get rid of existing binaries
 rm -f dist/traefik_*
 
 # Build binaries
-gox "${OS_PLATFORM_ARG[@]}" "${OS_ARCH_ARG[@]}" \
+gox -ldflags "-X main.Version=$VERSION -X main.BuildDate=$DATE" "${OS_PLATFORM_ARG[@]}" "${OS_ARCH_ARG[@]}" \
     -output="dist/traefik_{{.OS}}-{{.Arch}}"
-

traefik.go

@@ -30,7 +30,10 @@ import (
 )
 
 var (
+	Version               = ""
+	BuildDate             = ""
 	globalConfigFile      = kingpin.Arg("conf", "Main configration file.").Default("traefik.toml").String()
+	version               = kingpin.Flag("version", "Get Version.").Short('v').Bool()
 	currentConfigurations = make(configs)
 	metrics               = stats.New()
 	oxyLogger             = &OxyLogger{}
@@ -50,6 +53,7 @@ type configs map[string]*Configuration
 
 func main() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
+	kingpin.Version(Version + " built on the " + BuildDate)
 	kingpin.Parse()
 	fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
 	var srv *manners.GracefulServer