go-mysql library to avoid printing password in cleartext

go/binlog/gomysql_reader.go

@@ -41,7 +41,7 @@ func NewGoMySQLReader(connectionConfig *mysql.ConnectionConfig) (binlogReader *G
 
 	serverId := uint32(binlogReader.MigrationContext.ReplicaServerId)
 
-	binlogSyncerConfig := &replication.BinlogSyncerConfig{
+	binlogSyncerConfig := replication.BinlogSyncerConfig{
 		ServerID: serverId,
 		Flavor:   "mysql",
 		Host:     connectionConfig.Key.Hostname,

vendor/github.com/siddontang/go-mysql/README.md

@@ -25,7 +25,7 @@ cfg := replication.BinlogSyncerConfig {
     User:     "root",
     Password: "",
 }
-syncer := replication.NewBinlogSyncer(&cfg)
+syncer := replication.NewBinlogSyncer(cfg)
 
 // Start sync with sepcified binlog file and position
 streamer, _ := syncer.StartSync(mysql.Position{binlogFile, binlogPos})

vendor/github.com/siddontang/go-mysql/canal/canal.go

@@ -265,7 +265,7 @@ func (c *Canal) prepareSyncer() error {
 		Password: c.cfg.Password,
 	}
 
-	c.syncer = replication.NewBinlogSyncer(&cfg)
+	c.syncer = replication.NewBinlogSyncer(cfg)
 
 	return nil
 }

vendor/github.com/siddontang/go-mysql/cmd/go-mysqlbinlog/main.go

@@ -45,7 +45,7 @@ func main() {
 		SemiSyncEnabled: *semiSync,
 	}
 
-	b := replication.NewBinlogSyncer(&cfg)
+	b := replication.NewBinlogSyncer(cfg)
 
 	pos := mysql.Position{*file, uint32(*pos)}
 	if len(*backupPath) > 0 {

vendor/github.com/siddontang/go-mysql/replication/binlogsyncer.go

@@ -54,7 +54,7 @@ type BinlogSyncerConfig struct {
 type BinlogSyncer struct {
 	m sync.RWMutex
 
-	cfg *BinlogSyncerConfig
+	cfg BinlogSyncerConfig
 
 	c *client.Conn
 
@@ -71,8 +71,13 @@ type BinlogSyncer struct {
 }
 
 // NewBinlogSyncer creates the BinlogSyncer with cfg.
-func NewBinlogSyncer(cfg *BinlogSyncerConfig) *BinlogSyncer {
+func NewBinlogSyncer(cfg BinlogSyncerConfig) *BinlogSyncer {
+
+	// Clear the Password to avoid outputing it in log.
+	pass := cfg.Password
+	cfg.Password = ""
 	log.Infof("create BinlogSyncer with config %v", cfg)
+	cfg.Password = pass
 
 	b := new(BinlogSyncer)
 

vendor/github.com/siddontang/go-mysql/replication/replication_test.go

@@ -271,7 +271,7 @@ func (t *testSyncerSuite) setupTest(c *C, flavor string) {
 		Password: "",
 	}
 
-	t.b = NewBinlogSyncer(&cfg)
+	t.b = NewBinlogSyncer(cfg)
 }
 
 func (t *testSyncerSuite) testPositionSync(c *C) {