diff --git a/canal/canal_test.go b/canal/canal_test.go
index a5bb6ed92..e1c8ad7e3 100644
--- a/canal/canal_test.go
+++ b/canal/canal_test.go
@@ -141,10 +141,48 @@ func (s *canalTestSuite) TestCanal(c *C) {
 	s.execute(c, "ALTER TABLE test.canal_test ADD `age` INT(5) NOT NULL AFTER `name`")
 	s.execute(c, "INSERT INTO test.canal_test (name,age) VALUES (?,?)", "d", "18")
 
-	err := s.c.CatchMasterPos(10 * time.Second)
+	err := CatchMasterPos(s.c, 10*time.Second)
 	c.Assert(err, IsNil)
 }
 
+func CatchMasterPos(c *Canal, timeout time.Duration) error {
+	pos, err := c.GetMasterPos()
+	if err != nil {
+		return errors.Trace(err)
+	}
+
+	return WaitUntilPos(c, pos, timeout)
+}
+
+func FlushBinlog(c *Canal) error {
+	_, err := c.Execute("FLUSH BINARY LOGS")
+	return errors.Trace(err)
+}
+
+func WaitUntilPos(c *Canal, pos mysql.Position, timeout time.Duration) error {
+	timer := time.NewTimer(timeout)
+	for {
+		select {
+		case <-timer.C:
+			return errors.Errorf("wait position %v too long > %s", pos, timeout)
+		default:
+			err := FlushBinlog(c)
+			if err != nil {
+				return errors.Trace(err)
+			}
+			curPos := c.master.Position()
+			if curPos.Compare(pos) >= 0 {
+				return nil
+			} else {
+				log.Debugf("master pos is %v, wait catching %v", curPos, pos)
+				time.Sleep(100 * time.Millisecond)
+			}
+		}
+	}
+
+	return nil
+}
+
 func (s *canalTestSuite) TestCanalFilter(c *C) {
 	// included
 	sch, err := s.c.GetTable("test", "canal_test")
diff --git a/canal/sync.go b/canal/sync.go
index 9a8df4b96..27554c905 100644
--- a/canal/sync.go
+++ b/canal/sync.go
@@ -274,35 +274,6 @@ func (c *Canal) handleRowsEvent(e *replication.BinlogEvent) error {
 	return c.eventHandler.OnRow(events)
 }
 
-func (c *Canal) FlushBinlog() error {
-	_, err := c.Execute("FLUSH BINARY LOGS")
-	return errors.Trace(err)
-}
-
-func (c *Canal) WaitUntilPos(pos mysql.Position, timeout time.Duration) error {
-	timer := time.NewTimer(timeout)
-	for {
-		select {
-		case <-timer.C:
-			return errors.Errorf("wait position %v too long > %s", pos, timeout)
-		default:
-			err := c.FlushBinlog()
-			if err != nil {
-				return errors.Trace(err)
-			}
-			curPos := c.master.Position()
-			if curPos.Compare(pos) >= 0 {
-				return nil
-			} else {
-				log.Debugf("master pos is %v, wait catching %v", curPos, pos)
-				time.Sleep(100 * time.Millisecond)
-			}
-		}
-	}
-
-	return nil
-}
-
 func (c *Canal) GetMasterPos() (mysql.Position, error) {
 	rr, err := c.Execute("SHOW MASTER STATUS")
 	if err != nil {
@@ -337,12 +308,3 @@ func (c *Canal) GetMasterGTIDSet() (mysql.GTIDSet, error) {
 	}
 	return gset, nil
 }
-
-func (c *Canal) CatchMasterPos(timeout time.Duration) error {
-	pos, err := c.GetMasterPos()
-	if err != nil {
-		return errors.Trace(err)
-	}
-
-	return c.WaitUntilPos(pos, timeout)
-}