增加客户端日志输出

client.go

@@ -25,9 +25,9 @@ type Client struct {
 	opts       *clientOptions
 
 	// ctx and ctxCancel manage the lifecycle of client.
-	ctx       context.Context
+	ctx            context.Context
-	ctxCancel context.CancelFunc
+	ctxCancel      context.CancelFunc
-
+	logger         log.Logger
 	writeFrameChan chan frame.Frame
 	shutdownChan   chan error
 }
@@ -47,24 +47,29 @@ func NewClient(appName string, connType ClientType, opts ...ClientOption) *Clien
 
 	ctx, ctxCancel := context.WithCancel(context.Background())
 
-	return &Client{
+	cli := new(Client)
-		name:           appName,
+	if cli.logger == nil {
-		clientId:       clientId,
+		cli.logger = log.Default()
-		streamType:     connType,
-		opts:           option,
-		errorfn:        func(err error) { log.Errorf("client err, %s", err) },
-		writeFrameChan: make(chan frame.Frame),
-		shutdownChan:   make(chan error, 1),
-		ctx:            ctx,
-		ctxCancel:      ctxCancel,
 	}
+	cli.name = appName
+	cli.clientId = clientId
+	cli.streamType = connType
+	cli.opts = option
+	cli.errorfn = func(err error) {
+		cli.logger.Errorf("client err, %s", err)
+	}
+	cli.writeFrameChan = make(chan frame.Frame)
+	cli.shutdownChan = make(chan error, 1)
+	cli.ctx = ctx
+	cli.ctxCancel = ctxCancel
+	return cli
 }
 
 // Connect connects to HPDS-MessageQueue.
 func (c *Client) Connect(ctx context.Context, addr string) error {
 	controlStream, dataStream, err := c.openStream(ctx, addr)
 	if err != nil {
-		log.Errorf("connect error, %s", err)
+		c.logger.Errorf("connect error, %s", err)
 		return err
 	}
 
@@ -91,7 +96,7 @@ func (c *Client) runBackground(ctx context.Context, addr string, controlStream C
 			var err error
 			controlStream, dataStream, err = c.openStream(ctx, addr)
 			if err != nil {
-				log.Errorf("client reconnect error, %s", err)
+				c.logger.Errorf("client reconnect error, %s", err)
 				time.Sleep(time.Second)
 				goto RECONNECT
 			}
@@ -110,7 +115,7 @@ func (c *Client) cleanStream(controlStream ClientControlStream, err error) {
 	errString := ""
 	if err != nil {
 		errString = err.Error()
-		log.Errorf("client cancel with error, %s", err)
+		c.logger.Errorf("client cancel with error, %s", err)
 	}
 
 	// controlStream is nil represents that client is not connected.
@@ -250,18 +255,18 @@ func (c *Client) handleFrame(f frame.Frame) {
 	switch ff := f.(type) {
 	case *frame.DataFrame:
 		if c.processor == nil {
-			log.Warnf("client processor has not been set")
+			c.logger.Warnf("client processor has not been set")
 		} else {
 			c.processor(ff)
 		}
 	case *frame.BackFlowFrame:
 		if c.receiver == nil {
-			log.Warnf("client receiver has not been set")
+			c.logger.Warnf("client receiver has not been set")
 		} else {
 			c.receiver(ff)
 		}
 	default:
-		log.Warnf("client data stream receive unexcepted frame, frame_type: %v", f)
+		c.logger.Warnf("client data stream receive unexcepted frame, frame_type: %v", f)
 	}
 }
 
@@ -291,13 +296,13 @@ func (c *Client) receivingStreamClose(controlStream ControlStream, dataStream Da
 // SetDataFrameObserver sets the data frame handler.
 func (c *Client) SetDataFrameObserver(fn func(*frame.DataFrame)) {
 	c.processor = fn
-	log.Debugf("SetDataFrameObserver")
+	c.logger.Debugf("SetDataFrameObserver")
 }
 
 // SetBackFlowFrameObserver sets the backflow frame handler.
 func (c *Client) SetBackFlowFrameObserver(fn func(*frame.BackFlowFrame)) {
 	c.receiver = fn
-	log.Debugf("SetBackFlowFrameObserver")
+	c.logger.Debugf("SetBackFlowFrameObserver")
 }
 
 // SetObserveDataTags set the data tag list that will be observed.
@@ -315,3 +320,8 @@ func (c *Client) SetErrorHandler(fn func(err error)) {
 func (c *Client) ClientId() string {
 	return c.clientId
 }
+
+// Logger get client's logger instance, you can customize this using `hpds.WithLogger`
+func (c *Client) Logger() log.Logger {
+	return c.logger
+}