cmd: add version.go

.gitignore

@@ -8,6 +8,7 @@
 .DS_Store
 
 /Godeps/_workspace
+/cmd/version.go
 .htaccess
 
 /bin

Makefile

@@ -4,7 +4,10 @@ export GO15VENDOREXPERIMENT=1
 
 build-all: redis-port
 
-redis-port:
+build-deps:
+	@mkdir -p bin && bash version
+
+redis-port: build-deps
 	go build -i -o bin/redis-port ./cmd
 
 clean:

cmd/main.go

@@ -4,6 +4,7 @@
 package main
 
 import (
+	"fmt"
 	"runtime"
 	"strconv"
 	"strings"
@@ -66,6 +67,7 @@ Usage:
 	redis-port restore  [--ncpu=N]  [--parallel=M]  [--input=INPUT]  [--faketime=FAKETIME] [--extra] [--filterdb=DB] --target=TARGET [--auth=AUTH] [--redis|--codis]
 	redis-port sync     [--ncpu=N]  [--parallel=M]   --from=MASTER   [--password=PASSWORD] [--psync] [--filterdb=DB] --target=TARGET [--auth=AUTH] [--redis|--codis] [--sockfile=FILE [--filesize=SIZE]]
 	redis-port dump     [--ncpu=N]  [--parallel=M]   --from=MASTER   [--password=PASSWORD] [--extra] [--output=OUTPUT]
+	redis-port --version
 
 Options:
 	-n N, --ncpu=N                    Set runtime.GOMAXPROCS to N.
@@ -90,6 +92,13 @@ Options:
 		log.PanicError(err, "parse arguments failed")
 	}
 
+	switch {
+	case d["--version"].(bool):
+		fmt.Println("version:", Version)
+		fmt.Println("compile:", Compile)
+		return
+	}
+
 	if s, ok := d["--ncpu"].(string); ok && s != "" {
 		n, err := parseInt(s, 1, 1024)
 		if err != nil {

version

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+version=`git log --date=iso --pretty=format:"%cd @%H @" -1 && git describe --tag`
+if [ $? -ne 0 ]; then
+    version="unknown version"
+fi
+
+compile=`date +"%F %T %z"`" by "`go version`
+if [ $? -ne 0 ]; then
+    compile="unknown datetime"
+fi
+
+cat << EOF | gofmt > cmd/version.go
+package main
+
+const (
+    Version = "$version"
+    Compile = "$compile"
+)
+EOF
+
+cat << EOF > bin/version
+version = $version
+compile = $compile
+EOF