Merge pull request #242 from philips/add-version-flag-0.2

feat(etcd): add version flag

etcd.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"io/ioutil"
 	"os"
 	"strings"
@@ -31,6 +32,8 @@ var (
 
 	force bool
 
+	printVersion bool
+
 	maxSize int
 
 	snapshot bool
@@ -45,6 +48,8 @@ var (
 )
 
 func init() {
+	flag.BoolVar(&printVersion, "version", false, "print the version and exit")
+
 	flag.BoolVar(&log.Verbose, "v", false, "verbose logging")
 	flag.BoolVar(&veryVerbose, "vv", false, "very verbose logging")
 
@@ -116,6 +121,11 @@ type Info struct {
 func main() {
 	flag.Parse()
 
+	if printVersion {
+		fmt.Println(server.ReleaseVersion)
+		os.Exit(0)
+	}
+
 	if cpuprofile != "" {
 		runCPUProfile()
 	}

scripts/release-version

@@ -4,5 +4,5 @@ VER=$(git describe --tags HEAD)
 
 cat <<EOF
 package server
-const releaseVersion = "$VER"
+const ReleaseVersion = "$VER"
 EOF

server/server.go

@@ -195,7 +195,7 @@ func (s *Server) OriginAllowed(origin string) bool {
 // Handler to return the current version of etcd.
 func (s *Server) GetVersionHandler(w http.ResponseWriter, req *http.Request) error {
 	w.WriteHeader(http.StatusOK)
-	fmt.Fprintf(w, "etcd %s", releaseVersion)
+	fmt.Fprintf(w, "etcd %s", ReleaseVersion)
 	return nil
 }
 

server/version.go

@@ -5,4 +5,4 @@ const Version = "v2"
 // TODO: The release version (generated from the git tag) will be the raft
 // protocol version for now. When things settle down we will fix it like the
 // client API above.
-const PeerVersion = releaseVersion
+const PeerVersion = ReleaseVersion