1 files changed, 22 insertions, 1 deletions
diff --git a/configfiles.go b/configfiles.go
index 5c2b0f6..4ea72e0 100644
--- a/configfiles.go
+++ b/configfiles.go
@@ -84,16 +84,37 @@ func readConfigFile(filename string) error {
 }
 
 func writeConfigFile() {
+	test := time.Now().Format("YYYYMMDD-HH-MM")
+	if !writeConfigFileTmp("virtigo.json.new." + test) {
+		log.Println("config file write error")
+		os.Exit(-1)
+	}
+	if !writeConfigFileTmp("virtigo.json") {
+		log.Println("config file write error")
+		os.Exit(-1)
+	}
+
+	origname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "virtigo.json")
+	newname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "virtigo.json.old")
+	err := os.Rename(origname, newname)
+	if err != nil {
+		log.Printf("rename fail: %s", err)
+		os.Exit(-1)
+	}
+}
+
+func writeConfigFileTmp(filename string) bool {
 	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "virtigo.json")
 	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
 	defer cfgfile.Close()
 	if err != nil {
 		log.Info("open config file :", err)
-		return
+		return false
 	}
 	json := me.cluster.FormatJSON()
 	fmt.Fprintln(cfgfile, json)
 	log.Info("Write:", fullname, "OK")
+	return true
 }
 
 func writeConfigFileDroplets() {