示例#1
0
文件: channel.go 项目: chaosue/nsq
// NewChannel creates a new instance of the Channel type and returns a pointer
func NewChannel(topicName string, channelName string, ctx *context,
	deleteCallback func(*Channel)) *Channel {

	c := &Channel{
		topicName:      topicName,
		name:           channelName,
		memoryMsgChan:  make(chan *Message, ctx.nsqd.getOpts().MemQueueSize),
		clientMsgChan:  make(chan *Message),
		exitChan:       make(chan int),
		clients:        make(map[int64]Consumer),
		deleteCallback: deleteCallback,
		ctx:            ctx,
	}
	if len(ctx.nsqd.getOpts().E2EProcessingLatencyPercentiles) > 0 {
		c.e2eProcessingLatencyStream = quantile.New(
			ctx.nsqd.getOpts().E2EProcessingLatencyWindowTime,
			ctx.nsqd.getOpts().E2EProcessingLatencyPercentiles,
		)
	}

	c.initPQ()

	if strings.HasSuffix(channelName, "#ephemeral") {
		c.ephemeral = true
		c.backend = newDummyBackendQueue()
	} else {
		// backend names, for uniqueness, automatically include the topic...
		backendName := getBackendName(topicName, channelName, false)
		c.backend = newDiskQueue(backendName,
			ctx.nsqd.getOpts().DataPath,
			ctx.nsqd.getOpts().MaxBytesPerFile,
			int32(minValidMsgLength),
			int32(ctx.nsqd.getOpts().MaxMsgSize)+minValidMsgLength,
			ctx.nsqd.getOpts().SyncEvery,
			ctx.nsqd.getOpts().SyncTimeout,
			ctx.nsqd.getOpts().Logger)

		backendName = getBackendName(topicName, channelName, true)
		c.backendDeferred = newDiskQueue(backendName,
			ctx.nsqd.getOpts().DataPath,
			ctx.nsqd.getOpts().MaxBytesPerFile,
			int32(minValidMsgLength),
			int32(ctx.nsqd.getOpts().MaxMsgSize),
			ctx.nsqd.getOpts().SyncEvery,
			ctx.nsqd.getOpts().SyncTimeout,
			ctx.nsqd.getOpts().Logger)
	}

	go c.messagePump()
	go c.loadDeferredQueueFromBackend()

	c.ctx.nsqd.Notify(c)

	return c
}
示例#2
0
文件: topic.go 项目: GregMeng/nsq
func (t *Topic) AggregateChannelE2eProcessingLatency() *quantile.Quantile {
	var latencyStream *quantile.Quantile
	for _, c := range t.channelMap {
		if c.e2eProcessingLatencyStream == nil {
			continue
		}
		if latencyStream == nil {
			latencyStream = quantile.New(
				t.ctx.nsqd.getOpts().E2EProcessingLatencyWindowTime,
				t.ctx.nsqd.getOpts().E2EProcessingLatencyPercentiles)
		}
		latencyStream.Merge(c.e2eProcessingLatencyStream)
	}
	return latencyStream
}
示例#3
0
文件: topic.go 项目: oywc410/MYPG
func (t *Topic) AggregateChannelE2eProcessingLatency() *quantile.Quantile {
	var latencyStream *quantile.Quantile
	t.RLock()
	realChannels := make([]*Channel, 0, len(t.channelMap))
	for _, c := range t.channelMap {
		realChannels = append(realChannels, c)
	}
	t.RUnlock()
	for _, c := range realChannels {
		if c.e2eProcessingLatencyStream == nil {
			continue
		}
		if latencyStream == nil {
			latencyStream = quantile.New(
				t.ctx.nsqd.getOpts().E2EProcessingLatencyWindowTime,
				t.ctx.nsqd.getOpts().E2EProcessingLatencyPercentiles)
		}
		latencyStream.Merge(c.e2eProcessingLatencyStream)
	}
	return latencyStream
}