fix dead loop

console.go

@@ -15,6 +15,11 @@ const (
 type ConsoleAppender struct {
 }
 
+// Close implements LoggerAppender.
+func (c *ConsoleAppender) Close() {
+
+}
+
 func (c *ConsoleAppender) GetName() string {
 	return "console"
 }

file.go

@@ -9,6 +9,13 @@ type FileAppender struct {
 	filePath string
 	lchan    chan LogEvent
 	file     *os.File
+	stopChan chan struct{}
+}
+
+// Close implements LoggerAppender.
+func (f *FileAppender) Close() {
+	//send stop signal
+	f.stopChan <- struct{}{}
 }
 
 func (f *FileAppender) GetName() string {
@@ -17,6 +24,7 @@ func (f *FileAppender) GetName() string {
 
 func (f *FileAppender) start() {
 	f.lchan = make(chan LogEvent, 10)
+	f.stopChan = make(chan struct{})
 	if f.file == nil || int(f.file.Fd()) == -1 {
 		dirName := filepath.Dir(f.filePath)
 		_, err := os.Stat(dirName)
@@ -29,9 +37,14 @@ func (f *FileAppender) start() {
 	go func() {
 		defer f.file.Close()
 		for {
-			logEvent := <-f.lchan
+			select {
-			logMsg := format(logEvent)
+			case <-f.stopChan:
-			f.file.WriteString(logMsg)
+				return
+			case logEvent := <-f.lchan:
+				logMsg := format(logEvent)
+				f.file.WriteString(logMsg)
+			}
+
 		}
 	}()
 }

main.go

@@ -56,6 +56,7 @@ type LogEvent struct {
 type LoggerAppender interface {
 	GetName() string
 	Append(logEvent LogEvent)
+	Close()
 }
 
 var consoleAppender LoggerAppender = &ConsoleAppender{}