v1.2.3: polish log print to print more error info

ChangeLog

@@ -1,3 +1,6 @@
+2019-04-13 Alibaba Cloud.
+	* version: 1.2.3
+	* IMPROVE: polish log print to print more error info.
 2019-04-03 Alibaba Cloud.
 	* version: 1.2.2
 	* BUGFIX: support 5.0 rdb RDB_OPCODE_MODULE_AUX, RDB_OPCODE_IDLE and

src/redis-shake/common/common.go

@@ -1,19 +1,49 @@
 package utils
 
-import(
-	logRotate "gopkg.in/natefinch/lumberjack.v2"
+import (
+	"net"
+	"fmt"
+	"strings"
+
 	"pkg/libs/bytesize"
+
+	logRotate "gopkg.in/natefinch/lumberjack.v2"
 )
 
-const(
+const (
 	GolangSecurityTime = "2006-01-02T15:04:05Z"
 	// GolangSecurityTime = "2006-01-02 15:04:05"
 	ReaderBufferSize = bytesize.MB * 32
 	WriterBufferSize = bytesize.MB * 8
 )
 
-var(
+var (
 	Version = "$"
 	LogRotater *logRotate.Logger
 	StartTime string
 )
+
+// read until hit the end of RESP: "\r\n"
+func ReadRESPEnd(c net.Conn) (string, error) {
+	var ret string
+	for {
+		b := make([]byte, 1)
+		if _, err := c.Read(b); err != nil {
+			return "", fmt.Errorf("read error[%v], current return[%s]", err, ret)
+		}
+
+		ret += string(b)
+		if strings.HasSuffix(ret, "\r\n") {
+			break
+		}
+	}
+	return ret, nil
+}
+
+func RemoveRESPEnd(input string) string {
+	length := len(input)
+	if length >= 2 {
+		return input[: length - 2]
+	}
+	return input
+}

src/redis-shake/common/utils.go

@@ -21,8 +21,8 @@ import (
 	"pkg/libs/stats"
 	"pkg/rdb"
 	"pkg/redis"
-	redigo "github.com/garyburd/redigo/redis"
 	"redis-shake/configure"
+	redigo "github.com/garyburd/redigo/redis"
 )
 
 func OpenRedisConn(target, auth_type, passwd string) redigo.Conn {
@@ -42,6 +42,7 @@ func OpenNetConn(target, auth_type, passwd string) net.Conn {
 		log.PanicErrorf(err, "cannot connect to '%s'", target)
 	}
 
+	log.Infof("try to auth address[%v] with type[%v]", target, auth_type)
 	AuthPassword(c, auth_type, passwd)
 	return c
 }
@@ -88,17 +89,19 @@ func SendPSyncListeningPort(c net.Conn, port int) {
 	if err != nil {
 		log.PanicError(errors.Trace(err), "write replconf listening-port failed")
 	}
-	var b = make([]byte, 5)
-	if _, err := io.ReadFull(c, b); err != nil {
+
+	ret, err := ReadRESPEnd(c)
+	if err != nil {
 		log.PanicError(errors.Trace(err), "read auth response failed")
 	}
-	if strings.ToUpper(string(b)) != "+OK\r\n" {
-		log.Panic("repl listening-port failed: ", string(b))
+	if strings.ToUpper(ret) != "+OK\r\n" {
+		log.Panicf("repl listening-port failed[%v]", RemoveRESPEnd(ret))
 	}
 }
 
 func AuthPassword(c net.Conn, auth_type, passwd string) {
 	if passwd == "" {
+		log.Infof("input password is empty, skip auth address[%v] with type[%v].", c.RemoteAddr(), auth_type)
 		return
 	}
 
@@ -106,12 +109,13 @@ func AuthPassword(c net.Conn, auth_type, passwd string) {
 	if err != nil {
 		log.PanicError(errors.Trace(err), "write auth command failed")
 	}
-	var b = make([]byte, 5)
-	if _, err := io.ReadFull(c, b); err != nil {
+
+	ret, err := ReadRESPEnd(c)
+	if err != nil {
 		log.PanicError(errors.Trace(err), "read auth response failed")
 	}
-	if strings.ToUpper(string(b)) != "+OK\r\n" {
-		log.Panicf("auth failed[%s]", string(b))
+	if strings.ToUpper(ret) != "+OK\r\n" {
+		log.Panicf("auth failed[%v]", RemoveRESPEnd(ret))
 	}
 }
 
@@ -125,6 +129,7 @@ func OpenSyncConn(target string, auth_type, passwd string) (net.Conn, <-chan int
 
 func waitRdbDump(r io.Reader) <-chan int64 {
 	size := make(chan int64)
+	// read rdb size
 	go func() {
 		var rsp string
 		for {

src/redis-shake/sync.go

@@ -119,7 +119,7 @@ func (cmd *CmdSync) Main() {
 	}
 	defer input.Close()
 
-	log.Infof("rdb file = %d\n", nsize)
+	log.Infof("rdb file size = %d\n", nsize)
 
 	if sockfile != nil {
 		r, w := pipe.NewFilePipe(int(conf.Options.SockFileSize), sockfile)
@@ -134,6 +134,7 @@ func (cmd *CmdSync) Main() {
 		input = r
 	}
 
+	// start heartbeat
 	if len(conf.Options.HeartbeatUrl) > 0 {
 		heartbeatCtl := heartbeat.HeartbeatController{
 			ServerUrl: conf.Options.HeartbeatUrl,
@@ -144,9 +145,11 @@ func (cmd *CmdSync) Main() {
 
 	reader := bufio.NewReaderSize(input, utils.ReaderBufferSize)
 
+	// sync rdb
 	base.Status = "full"
 	cmd.SyncRDBFile(reader, target, conf.Options.TargetAuthType, conf.Options.TargetPasswordRaw, nsize)
 
+	// sync increment
 	base.Status = "incr"
 	close(cmd.wait_full)
 	cmd.SyncCommand(reader, target, conf.Options.TargetAuthType, conf.Options.TargetPasswordRaw)
@@ -183,6 +186,7 @@ func (cmd *CmdSync) SendPSyncCmd(master, auth_type, passwd string) (pipe.Reader,
 	cmd.targetOffset.Set(offset)
 	log.Infof("psync runid = %s offset = %d, fullsync", runid, offset)
 
+	// get rdb file size
 	var nsize int64
 	for nsize == 0 {
 		select {