增加优雅退出的功能

aufs/main.go

@@ -8,6 +8,8 @@ import (
 	"mime"
 	"net/http"
 	"os"
+	"os/signal"
+	"syscall"
 )
 
 // 启动web服务
@@ -106,4 +108,16 @@ func main() {
 
 	// web service
 	startWeb()
+
+	// 监听关闭的信号
+	ch := make(chan os.Signal, 1)
+	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+	sign, ok := <-ch
+	if ok {
+		msg := "OS Signal received: " + sign.String()
+		log.Println(msg)
+	}
+	//
+	log.Println("exit AUFS application")
+
 }