add check backup interface

routers/api/v1/node.go

@@ -599,6 +599,7 @@ func CheckBackup(c *gin.Context) {
 	path := app.GetAbsPath(setting.BityuanSetting.Name)
 	backupPath := path + "/datadir_backup"
 	if _,err := os.Stat(backupPath);err != nil {
+		tlog.Info("CheckBackup","err",err)
 		if os.IsNotExist(err) {
 			tlog.Error("CheckBackup file not exists","err",backupPath)
 			appG.Response(http.StatusOK,e.ERROR,false)
@@ -609,6 +610,8 @@ func CheckBackup(c *gin.Context) {
 			return
 		}
 	}
+	appG.Response(http.StatusOK,e.SUCCESS,true)
+	return
 }
 
 func NodeRecover(c *gin.Context) {