func (self *NsqdCoordinator) SetChannelConsumeOffsetToCluster(ch *nsqd.Channel, queueOffset int64, cnt int64, force bool) error {
topicName := ch.GetTopicName()
partition := ch.GetTopicPart()
coord, checkErr := self.getTopicCoord(topicName, partition)
if checkErr != nil {
return checkErr.ToErrorType()
}
var syncOffset ChannelConsumerOffset
syncOffset.AllowBackward = true
syncOffset.VCnt = cnt
syncOffset.VOffset = queueOffset
doLocalWrite := func(d *coordData) *CoordErr {
err := ch.SetConsumeOffset(nsqd.BackendOffset(queueOffset), cnt, force)
if err != nil {
if err != nsqd.ErrSetConsumeOffsetNotFirstClient {
coordLog.Infof("failed to set the consume offset: %v, err:%v", queueOffset, err)
return &CoordErr{err.Error(), RpcNoErr, CoordLocalErr}
}
coordLog.Debugf("the consume offset: %v can only be set by the first client", queueOffset)
return ErrLocalSetChannelOffsetNotFirstClient
}
return nil
}
doLocalExit := func(err *CoordErr) {}
doLocalCommit := func() error {
return nil
}
doLocalRollback := func() {}
doRefresh := func(d *coordData) *CoordErr {
return nil
}
doSlaveSync := func(c *NsqdRpcClient, nodeID string, tcData *coordData) *CoordErr {
if ch.IsEphemeral() {
return nil
}
rpcErr := c.UpdateChannelOffset(&tcData.topicLeaderSession, &tcData.topicInfo, ch.GetName(), syncOffset)
if rpcErr != nil {
coordLog.Infof("sync channel(%v) offset to replica %v failed: %v, offset: %v", ch.GetName(),
nodeID, rpcErr, syncOffset)
}
return rpcErr
}
handleSyncResult := func(successNum int, tcData *coordData) bool {
if successNum == len(tcData.topicInfo.ISR) {
return true
}
return false
}
clusterErr := self.doSyncOpToCluster(false, coord, doLocalWrite, doLocalExit, doLocalCommit, doLocalRollback,
doRefresh, doSlaveSync, handleSyncResult)
if clusterErr != nil {
return clusterErr.ToErrorType()
}
return nil
}
func (c *context) SetChannelOffset(ch *nsqd.Channel, startFrom *ConsumeOffset, force bool) (int64, int64, error) {
var l *consistence.CommitLogData
var queueOffset int64
cnt := int64(0)
var err error
if startFrom.OffsetType == offsetTimestampType {
if c.nsqdCoord != nil {
l, queueOffset, cnt, err = c.nsqdCoord.SearchLogByMsgTimestamp(ch.GetTopicName(), ch.GetTopicPart(), startFrom.OffsetValue)
} else {
err = errors.New("Not supported while coordinator disabled")
}
} else if startFrom.OffsetType == offsetSpecialType {
if startFrom.OffsetValue == -1 {
e := ch.GetChannelEnd()
queueOffset = int64(e.Offset())
cnt = e.TotalMsgCnt()
} else {
nsqd.NsqLogger().Logf("not known special offset :%v", startFrom)
err = errors.New("not supported offset type")
}
} else if startFrom.OffsetType == offsetVirtualQueueType {
queueOffset = startFrom.OffsetValue
cnt = 0
if c.nsqdCoord != nil {
l, queueOffset, cnt, err = c.nsqdCoord.SearchLogByMsgOffset(ch.GetTopicName(), ch.GetTopicPart(), queueOffset)
} else {
err = errors.New("Not supported while coordinator disabled")
}
} else if startFrom.OffsetType == offsetMsgCountType {
if c.nsqdCoord != nil {
l, queueOffset, cnt, err = c.nsqdCoord.SearchLogByMsgCnt(ch.GetTopicName(), ch.GetTopicPart(), startFrom.OffsetValue)
} else {
err = errors.New("Not supported while coordinator disabled")
}
} else {
nsqd.NsqLogger().Logf("not supported offset type:%v", startFrom)
err = errors.New("not supported offset type")
}
if err != nil {
nsqd.NsqLogger().Logf("failed to search the consume offset: %v, err:%v", startFrom, err)
return 0, 0, err
}
nsqd.NsqLogger().Logf("%v searched log : %v, offset: %v:%v", startFrom, l, queueOffset, cnt)
if c.nsqdCoord == nil {
err = ch.SetConsumeOffset(nsqd.BackendOffset(queueOffset), cnt, force)
if err != nil {
if err != nsqd.ErrSetConsumeOffsetNotFirstClient {
nsqd.NsqLogger().Logf("failed to set the consume offset: %v, err:%v", startFrom, err)
return 0, 0, err
}
nsqd.NsqLogger().Logf("the consume offset: %v can only be set by the first client", startFrom)
}
} else {
err = c.nsqdCoord.SetChannelConsumeOffsetToCluster(ch, queueOffset, cnt, force)
if err != nil {
if coordErr, ok := err.(*consistence.CommonCoordErr); ok {
if coordErr.IsEqual(consistence.ErrLocalSetChannelOffsetNotFirstClient) {
nsqd.NsqLogger().Logf("the consume offset: %v can only be set by the first client", startFrom)
return queueOffset, cnt, nil
}
}
nsqd.NsqLogger().Logf("failed to set the consume offset: %v (%v:%v), err: %v ", startFrom, queueOffset, cnt, err)
return 0, 0, err
}
}
return queueOffset, cnt, nil
}
func (p *protocolV2) internalPubAndTrace(client *nsqd.ClientV2, params [][]byte, traceEnable bool) ([]byte, error) {
startPub := time.Now().UnixNano()
bodyLen, topic, err := p.preparePub(client, params, p.ctx.getOpts().MaxMsgSize)
if err != nil {
return nil, err
}
if traceEnable && bodyLen <= nsqd.MsgTraceIDLength {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_BODY",
fmt.Sprintf("invalid body size %d with trace id enabled", bodyLen))
}
messageBodyBuffer := topic.BufferPoolGet(int(bodyLen))
defer topic.BufferPoolPut(messageBodyBuffer)
asyncAction := shouldHandleAsync(client, params)
_, err = io.CopyN(messageBodyBuffer, client.Reader, int64(bodyLen))
if err != nil {
return nil, protocol.NewFatalClientErr(err, "E_BAD_MESSAGE", "failed to read message body")
}
messageBody := messageBodyBuffer.Bytes()[:bodyLen]
topicName := topic.GetTopicName()
partition := topic.GetTopicPart()
var traceID uint64
var realBody []byte
if traceEnable {
traceID = binary.BigEndian.Uint64(messageBody[:nsqd.MsgTraceIDLength])
realBody = messageBody[nsqd.MsgTraceIDLength:]
} else {
realBody = messageBody
}
if p.ctx.checkForMasterWrite(topicName, partition) {
id := nsqd.MessageID(0)
offset := nsqd.BackendOffset(0)
rawSize := int32(0)
if asyncAction {
err = internalPubAsync(client.PubTimeout, messageBodyBuffer, topic)
} else {
id, offset, rawSize, _, err = p.ctx.PutMessage(topic, realBody, traceID)
}
//p.ctx.setHealth(err)
if err != nil {
topic.GetDetailStats().UpdatePubClientStats(client.RemoteAddr().String(), client.UserAgent, "tcp", 1, true)
nsqd.NsqLogger().LogErrorf("topic %v put message failed: %v", topic.GetFullName(), err)
if clusterErr, ok := err.(*consistence.CommonCoordErr); ok {
if !clusterErr.IsLocalErr() {
return nil, protocol.NewClientErr(err, FailedOnNotWritable, "")
}
}
return nil, protocol.NewClientErr(err, "E_PUB_FAILED", err.Error())
}
topic.GetDetailStats().UpdatePubClientStats(client.RemoteAddr().String(), client.UserAgent, "tcp", 1, false)
cost := time.Now().UnixNano() - startPub
topic.GetDetailStats().UpdateTopicMsgStats(int64(len(realBody)), cost/1000)
if !traceEnable {
return okBytes, nil
}
return getTracedReponse(messageBodyBuffer, id, traceID, offset, rawSize)
} else {
topic.GetDetailStats().UpdatePubClientStats(client.RemoteAddr().String(), client.UserAgent, "tcp", 1, true)
//forward to master of topic
nsqd.NsqLogger().LogDebugf("should put to master: %v, from %v",
topic.GetFullName(), client.RemoteAddr)
topic.DisableForSlave()
return nil, protocol.NewClientErr(err, FailedOnNotLeader, "")
}
}
func (self *NsqdCoordinator) updateChannelOffsetOnSlave(tc *coordData, channelName string, offset ChannelConsumerOffset) *CoordErr {
topicName := tc.topicInfo.Name
partition := tc.topicInfo.Partition
if !tc.IsMineISR(self.myNode.GetID()) {
return ErrTopicWriteOnNonISR
}
if coordLog.Level() >= levellogger.LOG_DETAIL {
coordLog.Debugf("got update channel(%v) offset on slave : %v", channelName, offset)
}
coord, coordErr := self.getTopicCoord(topicName, partition)
if coordErr != nil {
return ErrMissingTopicCoord
}
topic, localErr := self.localNsqd.GetExistingTopic(topicName, partition)
if localErr != nil {
coordLog.Warningf("slave missing topic : %v", topicName)
// TODO: leave the isr and try re-sync with leader
return &CoordErr{localErr.Error(), RpcCommonErr, CoordSlaveErr}
}
if topic.GetTopicPart() != partition {
coordLog.Errorf("topic on slave has different partition : %v vs %v", topic.GetTopicPart(), partition)
return ErrLocalMissingTopic
}
var ch *nsqd.Channel
ch, localErr = topic.GetExistingChannel(channelName)
// if a new channel on slave, we should set the consume offset by force
if localErr != nil {
offset.AllowBackward = true
ch = topic.GetChannel(channelName)
coordLog.Infof("slave init the channel : %v, %v, offset: %v", topic.GetTopicName(), channelName, ch.GetConfirmed())
}
if ch.IsEphemeral() {
coordLog.Errorf("ephemeral channel %v should not be synced on slave", channelName)
}
currentEnd := ch.GetChannelEnd()
if nsqd.BackendOffset(offset.VOffset) > currentEnd.Offset() {
coordLog.Debugf("update channel(%v) consume offset exceed end %v on slave : %v", channelName, offset, currentEnd)
// cache the offset (using map?) to reduce the slave channel flush.
coord.consumeMgr.Lock()
cur, ok := coord.consumeMgr.channelConsumeOffset[channelName]
if !ok || cur.VOffset < offset.VOffset {
coord.consumeMgr.channelConsumeOffset[channelName] = offset
}
coord.consumeMgr.Unlock()
if offset.Flush {
topic.ForceFlush()
currentEnd = ch.GetChannelEnd()
if nsqd.BackendOffset(offset.VOffset) > currentEnd.Offset() {
offset.VOffset = int64(currentEnd.Offset())
offset.VCnt = currentEnd.TotalMsgCnt()
}
} else {
return nil
}
}
err := ch.ConfirmBackendQueueOnSlave(nsqd.BackendOffset(offset.VOffset), offset.VCnt, offset.AllowBackward)
if err != nil {
coordLog.Warningf("update local channel(%v) offset %v failed: %v, current channel end: %v, topic end: %v",
channelName, offset, err, currentEnd, topic.TotalDataSize())
if err == nsqd.ErrExiting {
return &CoordErr{err.Error(), RpcNoErr, CoordTmpErr}
}
return &CoordErr{err.Error(), RpcCommonErr, CoordSlaveErr}
}
return nil
}
func (self *NsqdCoordinator) putMessagesOnSlave(coord *TopicCoordinator, logData CommitLogData, msgs []*nsqd.Message) *CoordErr {
if len(msgs) == 0 {
return ErrPubArgError
}
if logData.LogID != int64(msgs[0].ID) {
return ErrPubArgError
}
var logMgr *TopicCommitLogMgr
// this last log id should be used on slave to avoid the slave switch
// override the leader's prev mpub message id.
// While slave is chosen as leader, the next id should be larger than the last logid.
// Because the mpub maybe already committed after the leader is down, the new leader should begin
// with the last message id + 1 for next message.
lastMsgLogID := int64(msgs[len(msgs)-1].ID)
if logData.LastMsgLogID != lastMsgLogID {
return ErrPubArgError
}
var queueEnd nsqd.BackendQueueEnd
var topic *nsqd.Topic
checkDupOnSlave := func(tc *coordData) bool {
if coordLog.Level() >= levellogger.LOG_DETAIL {
topicName := tc.topicInfo.Name
coordLog.Debugf("pub on slave : %v, msg count: %v", topicName, len(msgs))
}
logMgr = tc.logMgr
if logMgr.IsCommitted(logData.LogID) {
coordLog.Infof("put the already committed log id : %v", logData.LogID)
return true
}
return false
}
doLocalWriteOnSlave := func(tc *coordData) *CoordErr {
var localErr error
var start time.Time
checkCost := coordLog.Level() >= levellogger.LOG_DEBUG
if self.enableBenchCost {
checkCost = true
}
if checkCost {
start = time.Now()
}
topicName := tc.topicInfo.Name
partition := tc.topicInfo.Partition
topic, localErr = self.localNsqd.GetExistingTopic(topicName, partition)
if localErr != nil {
coordLog.Infof("pub on slave missing topic : %v", topicName)
// leave the isr and try re-sync with leader
return &CoordErr{localErr.Error(), RpcErrTopicNotExist, CoordSlaveErr}
}
topic.Lock()
var cost time.Duration
if checkCost {
cost = time.Now().Sub(start)
if cost > time.Millisecond {
coordLog.Infof("prepare write on slave local cost :%v", cost)
}
}
queueEnd, localErr = topic.PutMessagesOnReplica(msgs, nsqd.BackendOffset(logData.MsgOffset))
if checkCost {
cost2 := time.Now().Sub(start)
if cost2 > time.Millisecond {
coordLog.Infof("write local on slave cost :%v, %v", cost, cost2)
}
}
topic.Unlock()
if localErr != nil {
logIndex, lastLogOffset, lastLog, _ := logMgr.GetLastCommitLogOffsetV2()
coordLog.Errorf("put messages on slave failed: %v, slave last logid: %v, data: %v:%v, %v",
localErr, logMgr.GetLastCommitLogID(), logIndex, lastLogOffset, lastLog)
return &CoordErr{localErr.Error(), RpcCommonErr, CoordSlaveErr}
}
return nil
}
doLocalCommit := func() error {
localErr := logMgr.AppendCommitLog(&logData, true)
if localErr != nil {
coordLog.Errorf("write commit log on slave failed: %v", localErr)
return localErr
}
topic.Lock()
topic.UpdateCommittedOffset(queueEnd)
topic.Unlock()
return nil
}
doLocalExit := func(err *CoordErr) {
if err != nil {
coordLog.Warningf("failed to batch put messages on slave: %v", err)
}
}
return self.doWriteOpOnSlave(coord, checkDupOnSlave, doLocalWriteOnSlave, doLocalCommit,
doLocalExit)
}
func (self *NsqdCoordinator) putMessageOnSlave(coord *TopicCoordinator, logData CommitLogData, msg *nsqd.Message) *CoordErr {
var logMgr *TopicCommitLogMgr
var topic *nsqd.Topic
var queueEnd nsqd.BackendQueueEnd
checkDupOnSlave := func(tc *coordData) bool {
if coordLog.Level() >= levellogger.LOG_DETAIL {
topicName := tc.topicInfo.Name
coordLog.Debugf("pub on slave : %v, msg %v", topicName, msg.ID)
}
logMgr = tc.logMgr
if logMgr.IsCommitted(logData.LogID) {
coordLog.Infof("pub the already committed log id : %v", logData.LogID)
return true
}
return false
}
doLocalWriteOnSlave := func(tc *coordData) *CoordErr {
var localErr error
topicName := tc.topicInfo.Name
partition := tc.topicInfo.Partition
topic, localErr = self.localNsqd.GetExistingTopic(topicName, partition)
if localErr != nil {
coordLog.Infof("pub on slave missing topic : %v", topicName)
// leave the isr and try re-sync with leader
return &CoordErr{localErr.Error(), RpcErrTopicNotExist, CoordSlaveErr}
}
if topic.GetTopicPart() != partition {
coordLog.Errorf("topic on slave has different partition : %v vs %v", topic.GetTopicPart(), partition)
return &CoordErr{ErrLocalTopicPartitionMismatch.String(), RpcErrTopicNotExist, CoordSlaveErr}
}
topic.Lock()
queueEnd, localErr = topic.PutMessageOnReplica(msg, nsqd.BackendOffset(logData.MsgOffset))
topic.Unlock()
if localErr != nil {
coordLog.Errorf("put message on slave failed: %v", localErr)
return &CoordErr{localErr.Error(), RpcCommonErr, CoordSlaveErr}
}
return nil
}
doLocalCommit := func() error {
localErr := logMgr.AppendCommitLog(&logData, true)
if localErr != nil {
coordLog.Errorf("write commit log on slave failed: %v", localErr)
return localErr
}
topic.Lock()
topic.UpdateCommittedOffset(queueEnd)
topic.Unlock()
return nil
}
doLocalExit := func(err *CoordErr) {
if err != nil {
coordLog.Infof("slave put message %v error: %v", logData, err)
}
}
return self.doWriteOpOnSlave(coord, checkDupOnSlave, doLocalWriteOnSlave, doLocalCommit, doLocalExit)
}
func (self *NsqdCoordinator) PutMessageToCluster(topic *nsqd.Topic,
body []byte, traceID uint64) (nsqd.MessageID, nsqd.BackendOffset, int32, nsqd.BackendQueueEnd, error) {
var commitLog CommitLogData
var queueEnd nsqd.BackendQueueEnd
msg := nsqd.NewMessage(0, body)
msg.TraceID = traceID
topicName := topic.GetTopicName()
partition := topic.GetTopicPart()
coord, checkErr := self.getTopicCoord(topicName, partition)
if checkErr != nil {
return msg.ID, nsqd.BackendOffset(commitLog.MsgOffset), commitLog.MsgSize, queueEnd, checkErr.ToErrorType()
}
var logMgr *TopicCommitLogMgr
doLocalWrite := func(d *coordData) *CoordErr {
logMgr = d.logMgr
topic.Lock()
id, offset, writeBytes, qe, localErr := topic.PutMessageNoLock(msg)
queueEnd = qe
topic.Unlock()
if localErr != nil {
coordLog.Warningf("put message to local failed: %v", localErr)
return &CoordErr{localErr.Error(), RpcNoErr, CoordLocalErr}
}
commitLog.LogID = int64(id)
// epoch should not be changed.
// leader epoch change means leadership change, leadership change
// need disable write which should hold the write lock.
// However, we are holding write lock while doing the cluster write replication.
commitLog.Epoch = d.GetTopicEpochForWrite()
commitLog.LastMsgLogID = commitLog.LogID
commitLog.MsgOffset = int64(offset)
commitLog.MsgSize = writeBytes
commitLog.MsgCnt = queueEnd.TotalMsgCnt()
commitLog.MsgNum = 1
return nil
}
doLocalExit := func(err *CoordErr) {
if err != nil {
coordLog.Infof("topic %v PutMessageToCluster msg %v error: %v", topic.GetFullName(), msg, err)
if coord.IsWriteDisabled() {
topic.DisableForSlave()
}
}
}
doLocalCommit := func() error {
localErr := logMgr.AppendCommitLog(&commitLog, false)
if localErr != nil {
coordLog.Errorf("topic : %v, Generator %v failed write commit log : %v, logmgr: %v, %v",
topic.GetFullName(), topic.GetMsgGenerator(), localErr, logMgr.pLogID, logMgr.nLogID)
}
topic.Lock()
topic.UpdateCommittedOffset(queueEnd)
topic.Unlock()
return localErr
}
doLocalRollback := func() {
coordLog.Warningf("failed write begin rollback : %v, %v", topic.GetFullName(), commitLog)
topic.Lock()
topic.RollbackNoLock(nsqd.BackendOffset(commitLog.MsgOffset), 1)
topic.Unlock()
}
doRefresh := func(d *coordData) *CoordErr {
logMgr = d.logMgr
if d.GetTopicEpochForWrite() != commitLog.Epoch {
coordLog.Warningf("write epoch changed during write: %v, %v", d.GetTopicEpochForWrite(), commitLog)
return ErrEpochMismatch
}
self.requestNotifyNewTopicInfo(d.topicInfo.Name, d.topicInfo.Partition)
return nil
}
doSlaveSync := func(c *NsqdRpcClient, nodeID string, tcData *coordData) *CoordErr {
// should retry if failed, and the slave should keep the last success write to avoid the duplicated
putErr := c.PutMessage(&tcData.topicLeaderSession, &tcData.topicInfo, commitLog, msg)
if putErr != nil {
coordLog.Infof("sync write to replica %v failed: %v. put offset:%v, logmgr: %v, %v",
nodeID, putErr, commitLog, logMgr.pLogID, logMgr.nLogID)
}
return putErr
}
handleSyncResult := func(successNum int, tcData *coordData) bool {
if successNum == len(tcData.topicInfo.ISR) {
return true
}
return false
}
clusterErr := self.doSyncOpToCluster(true, coord, doLocalWrite, doLocalExit, doLocalCommit, doLocalRollback,
doRefresh, doSlaveSync, handleSyncResult)
var err error
if clusterErr != nil {
err = clusterErr.ToErrorType()
}
return msg.ID, nsqd.BackendOffset(commitLog.MsgOffset), commitLog.MsgSize, queueEnd, err
}
func main() {
flag.Parse()
if *showVersion {
fmt.Printf("nsq_data_tool v%s\n", version.Binary)
return
}
if *topic == "" {
log.Fatal("--topic is required\n")
}
if *partition == -1 {
log.Fatal("--partition is required")
}
if *dataPath == "" {
log.Fatal("--data_path is required")
}
if *viewCnt > 1000000 {
log.Fatal("--view_cnt is too large")
}
topicDataPath := path.Join(*dataPath, *topic)
topicCommitLogPath := consistence.GetTopicPartitionBasePath(*dataPath, *topic, *partition)
tpLogMgr, err := consistence.InitTopicCommitLogMgr(*topic, *partition, topicCommitLogPath, 0)
if err != nil {
log.Fatalf("loading commit log %v failed: %v\n", topicCommitLogPath, err)
}
logIndex, lastOffset, lastLogData, err := tpLogMgr.GetLastCommitLogOffsetV2()
if err != nil {
log.Fatalf("loading last commit log failed: %v\n", err)
}
log.Printf("topic last commit log at %v:%v is : %v\n", logIndex, lastOffset, lastLogData)
// note: since there may be exist group commit. It is not simple to do the direct position of log.
// we need to search in the ordered log data.
searchOffset := int64(0)
searchLogIndexStart := int64(0)
if *searchMode == "count" {
searchLogIndexStart, searchOffset, _, err = tpLogMgr.SearchLogDataByMsgCnt(*viewStart)
if err != nil {
log.Fatalln(err)
}
} else if *searchMode == "id" {
searchLogIndexStart, searchOffset, _, err = tpLogMgr.SearchLogDataByMsgID(*viewStartID)
if err != nil {
log.Fatalln(err)
}
} else if *searchMode == "virtual_offset" {
searchLogIndexStart, searchOffset, _, err = tpLogMgr.SearchLogDataByMsgOffset(*viewStartID)
if err != nil {
log.Fatalln(err)
}
} else {
log.Fatalln("not supported search mode")
}
logData, err := tpLogMgr.GetCommitLogFromOffsetV2(searchLogIndexStart, searchOffset)
if err != nil {
log.Fatalf("topic read at: %v:%v failed: %v\n", searchLogIndexStart, searchOffset, err)
}
log.Printf("topic read at: %v:%v, %v\n", searchLogIndexStart, searchOffset, logData)
if *view == "commitlog" {
logs, err := tpLogMgr.GetCommitLogsV2(searchLogIndexStart, searchOffset, int(*viewCnt))
if err != nil {
if err != consistence.ErrCommitLogEOF {
log.Fatalf("get logs failed: %v", err)
return
}
}
for _, l := range logs {
fmt.Println(l)
}
} else if *view == "topicdata" {
queueOffset := logData.MsgOffset
if *searchMode == "virtual_offset" {
if queueOffset != *viewOffset {
queueOffset = *viewOffset
log.Printf("search virtual offset not the same : %v, %v\n", logData.MsgOffset, *viewOffset)
}
}
backendName := getBackendName(*topic, *partition)
backendWriter, err := nsqd.NewDiskQueueWriter(backendName, topicDataPath, 1024*1024*1024, 1, 1024*1024*100, 1)
if err != nil {
log.Fatal("init disk writer failed: %v", err)
return
}
backendReader := nsqd.NewDiskQueueSnapshot(backendName, topicDataPath, backendWriter.GetQueueReadEnd())
backendReader.SeekTo(nsqd.BackendOffset(queueOffset))
cnt := *viewCnt
for cnt > 0 {
cnt--
ret := backendReader.ReadOne()
if ret.Err != nil {
log.Fatalf("read data error: %v", ret)
return
}
fmt.Printf("%v:%v:%v\n", ret.Offset, ret.MovedSize, ret.Data)
}
}
}
func (s *httpServer) internalPUB(w http.ResponseWriter, req *http.Request, ps httprouter.Params, enableTrace bool) (interface{}, error) {
startPub := time.Now().UnixNano()
// do not support chunked for http pub, use tcp pub instead.
if req.ContentLength > s.ctx.getOpts().MaxMsgSize {
return nil, http_api.Err{413, "MSG_TOO_BIG"}
} else if req.ContentLength <= 0 {
return nil, http_api.Err{406, "MSG_EMPTY"}
}
// add 1 so that it's greater than our max when we test for it
// (LimitReader returns a "fake" EOF)
params, topic, err := s.getExistingTopicFromQuery(req)
if err != nil {
nsqd.NsqLogger().Logf("get topic err: %v", err)
return nil, http_api.Err{404, E_TOPIC_NOT_EXIST}
}
readMax := req.ContentLength + 1
b := topic.BufferPoolGet(int(req.ContentLength))
defer topic.BufferPoolPut(b)
asyncAction := !enableTrace
n, err := io.CopyN(b, io.LimitReader(req.Body, readMax), int64(req.ContentLength))
body := b.Bytes()[:req.ContentLength]
if err != nil {
nsqd.NsqLogger().Logf("read request body error: %v", err)
body = body[:n]
if err == io.EOF || err == io.ErrUnexpectedEOF {
// we ignore EOF, maybe the ContentLength is not match?
nsqd.NsqLogger().LogWarningf("read request body eof: %v, ContentLength: %v,return length %v.",
err, req.ContentLength, n)
} else {
return nil, http_api.Err{500, "INTERNAL_ERROR"}
}
}
if len(body) == 0 {
return nil, http_api.Err{406, "MSG_EMPTY"}
}
if s.ctx.checkForMasterWrite(topic.GetTopicName(), topic.GetTopicPart()) {
var err error
traceIDStr := params.Get("trace_id")
traceID, err := strconv.ParseUint(traceIDStr, 10, 0)
if enableTrace && err != nil {
nsqd.NsqLogger().Logf("trace id invalid %v, %v",
traceIDStr, err)
return nil, http_api.Err{400, "INVALID_TRACE_ID"}
}
id := nsqd.MessageID(0)
offset := nsqd.BackendOffset(0)
rawSize := int32(0)
if asyncAction {
err = internalPubAsync(nil, b, topic)
} else {
id, offset, rawSize, _, err = s.ctx.PutMessage(topic, body, traceID)
}
if err != nil {
nsqd.NsqLogger().LogErrorf("topic %v put message failed: %v", topic.GetFullName(), err)
if clusterErr, ok := err.(*consistence.CommonCoordErr); ok {
if !clusterErr.IsLocalErr() {
return nil, http_api.Err{400, FailedOnNotWritable}
}
}
return nil, http_api.Err{503, err.Error()}
}
cost := time.Now().UnixNano() - startPub
topic.GetDetailStats().UpdateTopicMsgStats(int64(len(body)), cost/1000)
if enableTrace {
return struct {
Status string `json:"status"`
ID uint64 `json:"id"`
TraceID string `json:"trace_id"`
QueueOffset uint64 `json:"queue_offset"`
DataRawSize uint32 `json:"rawsize"`
}{"OK", uint64(id), traceIDStr, uint64(offset), uint32(rawSize)}, nil
} else {
return "OK", nil
}
} else {
nsqd.NsqLogger().LogDebugf("should put to master: %v, from %v",
topic.GetFullName(), req.RemoteAddr)
topic.DisableForSlave()
return nil, http_api.Err{400, FailedOnNotLeader}
}
}