Golang Topic.GetFullName方法代码示例

func internalPubAsync(clientTimer *time.Timer, msgBody *bytes.Buffer, topic *nsqd.Topic) error {
	if topic.Exiting() {
		return nsqd.ErrExiting
	}
	info := &nsqd.PubInfo{
		Done:     make(chan struct{}),
		MsgBody:  msgBody,
		StartPub: time.Now(),
	}
	if clientTimer == nil {
		clientTimer = time.NewTimer(time.Second * 5)
	} else {
		clientTimer.Reset(time.Second * 5)
	}
	select {
	case topic.GetWaitChan() <- info:
	default:
		select {
		case topic.GetWaitChan() <- info:
		case <-topic.QuitChan():
			nsqd.NsqLogger().Infof("topic %v put messages failed at exiting", topic.GetFullName())
			return nsqd.ErrExiting
		case <-clientTimer.C:
			nsqd.NsqLogger().Infof("topic %v put messages timeout ", topic.GetFullName())
			return ErrPubToWaitTimeout
		}
	}
	<-info.Done
	return info.Err
}

func (c *context) internalPubLoop(topic *nsqd.Topic) {
	messages := make([]*nsqd.Message, 0, 100)
	pubInfoList := make([]*nsqd.PubInfo, 0, 100)
	topicName := topic.GetTopicName()
	partition := topic.GetTopicPart()
	nsqd.NsqLogger().Logf("start pub loop for topic: %v ", topic.GetFullName())
	defer func() {
		done := false
		for !done {
			select {
			case info := <-topic.GetWaitChan():
				pubInfoList = append(pubInfoList, info)
			default:
				done = true
			}
		}
		nsqd.NsqLogger().Logf("quit pub loop for topic: %v, left: %v ", topic.GetFullName(), len(pubInfoList))
		for _, info := range pubInfoList {
			info.Err = nsqd.ErrExiting
			close(info.Done)
		}
	}()
	quitChan := topic.QuitChan()
	infoChan := topic.GetWaitChan()
	for {
		select {
		case <-quitChan:
			return
		case info := <-infoChan:
			if info.MsgBody.Len() <= 0 {
				nsqd.NsqLogger().Logf("empty msg body")
			}
			messages = append(messages, nsqd.NewMessage(0, info.MsgBody.Bytes()))
			pubInfoList = append(pubInfoList, info)
			// TODO: avoid too much in a batch
		default:
			if len(pubInfoList) == 0 {
				nsqd.NsqLogger().LogDebugf("topic %v pub loop waiting for message", topic.GetFullName())
				select {
				case <-quitChan:
					return
				case info := <-infoChan:
					if info.MsgBody.Len() <= 0 {
						nsqd.NsqLogger().Logf("empty msg body")
					}
					messages = append(messages, nsqd.NewMessage(0, info.MsgBody.Bytes()))
					pubInfoList = append(pubInfoList, info)
				}
				continue
			}
			if len(pubInfoList) > 1 {
				nsqd.NsqLogger().LogDebugf("pub loop batch number: %v", len(pubInfoList))
			}
			var retErr error
			if c.checkForMasterWrite(topicName, partition) {
				_, _, _, err := c.PutMessages(topic, messages)
				if err != nil {
					nsqd.NsqLogger().LogErrorf("topic %v put messages %v failed: %v", topic.GetFullName(), len(messages), err)
					retErr = err
				}
			} else {
				topic.DisableForSlave()
				nsqd.NsqLogger().LogDebugf("should put to master: %v",
					topic.GetFullName())
				retErr = consistence.ErrNotTopicLeader.ToErrorType()
			}
			for _, info := range pubInfoList {
				info.Err = retErr
				close(info.Done)
			}
			pubInfoList = pubInfoList[:0]
			messages = messages[:0]
		}
	}
}

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
}