modify generate version way

Makefile

@@ -3,8 +3,8 @@ all: build
 build: kingshard
 
 kingshard:
-	go build -ldflags "-X main.GitHash=`git rev-parse HEAD` -X main.BuildTime=`date '+%Y-%m-%d_%I:%M:%S%p'`" -o ./bin/kingshard ./cmd/kingshard
-
+	@bash genver.sh
+	go build -o ./bin/kingshard ./cmd/kingshard
 clean:
 	@rm -rf bin
 

cmd/kingshard/main.go

@@ -26,18 +26,14 @@ import (
 
 	"github.com/flike/kingshard/config"
 	"github.com/flike/kingshard/core/golog"
+	"github.com/flike/kingshard/core/hack"
 	"github.com/flike/kingshard/proxy/server"
 )
 
 var configFile *string = flag.String("config", "/etc/ks.yaml", "kingshard config file")
 var logLevel *string = flag.String("log-level", "", "log level [debug|info|warn|error], default error")
 var version *bool = flag.Bool("v", false, "the version of kingshard")
 
-var (
-	BuildTime = "2016-01-09 CST"
-	GitHash   = "master"
-)
-
 const (
 	sqlLogName = "sql.log"
 	sysLogName = "sys.log"
@@ -57,8 +53,8 @@ func main() {
 	fmt.Print(banner)
 	runtime.GOMAXPROCS(runtime.NumCPU())
 	flag.Parse()
-	fmt.Printf("Git commit hash:%s\n", GitHash)
-	fmt.Printf("Build time:%s\n", BuildTime)
+	fmt.Printf("Git commit:%s\n", hack.Version)
+	fmt.Printf("Build time:%s\n", hack.Compile)
 	if *version {
 		return
 	}

core/hack/version.go

@@ -0,0 +1,6 @@
+package hack
+
+const (
+	Version = "2016-03-17 14:04:39 +0800 @358bd8f"
+	Compile = "2016-03-22 10:52:25 +0800 by go version go1.6 darwin/amd64"
+)

genver.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+version=`git log --date=iso --pretty=format:"%cd @%h" -1`
+if [ $? -ne 0 ]; then
+    version="not a git repo"
+fi
+
+compile=`date +"%F %T %z"`" by "`go version`
+
+cat << EOF | gofmt > core/hack/version.go
+package hack
+
+const (
+    Version = "$version"
+    Compile = "$compile"
+)
+EOF