go-mysqlbinlog: set to retry only 10 times (#945)

Author: dveeden

cmd/go-mysqlbinlog/main.go

@@ -40,13 +40,14 @@ func main() {
 		ServerID: 101,
 		Flavor:   *flavor,
 
-		Host:            *host,
-		Port:            uint16(*port),
-		User:            *user,
-		Password:        *password,
-		RawModeEnabled:  *rawMode,
-		SemiSyncEnabled: *semiSync,
-		UseDecimal:      true,
+		Host:                 *host,
+		Port:                 uint16(*port),
+		User:                 *user,
+		Password:             *password,
+		RawModeEnabled:       *rawMode,
+		SemiSyncEnabled:      *semiSync,
+		UseDecimal:           true,
+		MaxReconnectAttempts: 10,
 	}
 
 	b := replication.NewBinlogSyncer(cfg)

replication/binlogsyncer.go

@@ -749,12 +749,18 @@ func (b *BinlogSyncer) onStream(s *BinlogStreamer) {
 					b.retryCount++
 					if err = b.retrySync(); err != nil {
 						if b.cfg.MaxReconnectAttempts > 0 && b.retryCount >= b.cfg.MaxReconnectAttempts {
-							b.cfg.Logger.Errorf("retry sync err: %v, exceeded max retries (%d)", err, b.cfg.MaxReconnectAttempts)
+							b.cfg.Logger.Errorf(
+								"retry sync err: %v, exceeded max retries (%d)",
+								err, b.cfg.MaxReconnectAttempts,
+							)
 							s.closeWithError(err)
 							return
 						}
 
-						b.cfg.Logger.Errorf("retry sync err: %v, wait 1s and retry again", err)
+						b.cfg.Logger.Errorf(
+							"retry sync err: %v, wait 1s and retry again (retries: %d/%d)",
+							err, b.retryCount, b.cfg.MaxReconnectAttempts,
+						)
 						continue
 					}
 				}