Ejemplo n.º 1
0
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
}
Ejemplo n.º 2
0
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]
		}
	}
}