Golang pipeline.PipelinePack類代碼示例

func (rpsi *RedisPubSubInput) Run(ir pipeline.InputRunner, h pipeline.PluginHelper) error {
	var (
		dRunner pipeline.DecoderRunner
		decoder pipeline.Decoder
		pack    *pipeline.PipelinePack
		e       error
		ok      bool
	)
	// Get the InputRunner's chan to receive empty PipelinePacks
	packSupply := ir.InChan()

	if rpsi.conf.DecoderName != "" {
		if dRunner, ok = h.DecoderRunner(rpsi.conf.DecoderName, fmt.Sprintf("%s-%s", ir.Name(), rpsi.conf.DecoderName)); !ok {
			return fmt.Errorf("Decoder not found: %s", rpsi.conf.DecoderName)
		}
		decoder = dRunner.Decoder()
	}

	//Connect to the channel
	psc := redis.PubSubConn{Conn: rpsi.conn}
	psc.PSubscribe(rpsi.conf.Channel)

	for {
		switch n := psc.Receive().(type) {
		case redis.PMessage:
			// Grab an empty PipelinePack from the InputRunner
			pack = <-packSupply
			pack.Message.SetType("redis_pub_sub")
			pack.Message.SetLogger(n.Channel)
			pack.Message.SetPayload(string(n.Data))
			pack.Message.SetTimestamp(time.Now().UnixNano())
			var packs []*pipeline.PipelinePack
			if decoder == nil {
				packs = []*pipeline.PipelinePack{pack}
			} else {
				packs, e = decoder.Decode(pack)
			}
			if packs != nil {
				for _, p := range packs {
					ir.Inject(p)
				}
			} else {
				if e != nil {
					ir.LogError(fmt.Errorf("Couldn't parse Redis message: %s", n.Data))
				}
				pack.Recycle(nil)
			}
		case redis.Subscription:
			ir.LogMessage(fmt.Sprintf("Subscription: %s %s %d\n", n.Kind, n.Channel, n.Count))
			if n.Count == 0 {
				return errors.New("No channel to subscribe")
			}
		case error:
			fmt.Printf("error: %v\n", n)
			return n
		}
	}

	return nil
}

func (f *UptimeFilter) Run(runner pipeline.FilterRunner, helper pipeline.PluginHelper) (err error) {
	var (
		pack    *pipeline.PipelinePack
		payload string
	)

	inChan := runner.InChan()
	for pack = range inChan {
		payload = pack.Message.GetPayload()
		runner.LogMessage("Payload: " + payload)
		if f.hours == nil {
			f.hours = make(map[int64]bool)
		}
		var epoch int64 = f.GetEpoch(payload)
		f.startHour, f.endHour = f.FigureOutStartAndEndHour(epoch)
		if !f.hours[f.startHour] {
			f.InitFilterForStartHour(f.startHour, payload)
		} else {
			f.CalculateUptimeFor(f.startHour, f.endHour)
			// f.hours[&f.startHour] = false
			log.Printf("Length of map: &d", len(f.hours))
		}
		log.Printf("Start hour: %d", f.startHour)
		log.Printf("End hour: %d", f.endHour)
		log.Printf("EPOCH: %d", epoch)
		pack.Recycle()
	}
	return
}

func (rli *RedisInput) InsertMessage(ir pipeline.InputRunner, decoder pipeline.Decoder, msg string) {
	var (
		pack *pipeline.PipelinePack
		e    error
	)
	// Get the InputRunner's chan to receive empty PipelinePacks
	packSupply := ir.InChan()

	pack = <-packSupply
	pack.Message.SetType(rli.conf.Key)
	pack.Message.SetLogger("Redis")
	pack.Message.SetPayload(msg)
	pack.Message.SetTimestamp(time.Now().UnixNano())

	var packs []*pipeline.PipelinePack
	if decoder == nil {
		packs = []*pipeline.PipelinePack{pack}
	} else {
		packs, e = decoder.Decode(pack)
	}

	if packs != nil {
		for _, p := range packs {
			ir.Inject(p)
		}
	} else {
		if e != nil {
			ir.LogError(fmt.Errorf("Couldn't parse %s", msg))
			pack.Recycle(e)
		} else {
			pack.Recycle(nil)
			fmt.Println("pack recycle!")
		}
	}
}

func (rli *RedisListInput) Run(ir pipeline.InputRunner, h pipeline.PluginHelper) error {
	var (
		pack  *pipeline.PipelinePack
		packs []*pipeline.PipelinePack
	)

	// Get the InputRunner's chan to receive empty PipelinePacks
	inChan := ir.InChan()

	for {
		message, err := rli.conn.Do("RPOP", rli.conf.ListName)
		if err != nil {
			ir.LogError(fmt.Errorf("Redis RPOP error: %s", err))
			// TODO: should reconnect redis rather than close it
			rli.Stop()
			break
		}
		if message != nil {
			pack = <-inChan
			pack.Message.SetType("redis_list")
			pack.Message.SetPayload(string(message.([]uint8)))
			packs = []*pipeline.PipelinePack{pack}
			if packs != nil {
				for _, p := range packs {
					ir.Inject(p)
				}
			} else {
				pack.Recycle(nil)
			}
		} else {
			time.Sleep(time.Second)
		}
	}
	return nil
}

func (sop *SCAMPOutputPlugin) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {
	var pack *pipeline.PipelinePack

	// We have no default encoder
	if or.Encoder() == nil {
		return errors.New("Encoder required.")
	}

	for pack = range or.InChan() {
		scamp.Info.Printf("received pipeline pack")
		encoded, err := or.Encode(pack) // pack.Message.GetPayload()

		if err == nil {
			scamp.Info.Printf("payload: %s", encoded)
			msg := scamp.NewMessage()
			msg.SetEnvelope(scamp.ENVELOPE_JSON)
			msg.SetAction(sop.conf.Action)
			msg.SetVersion(1)
			msg.Write(encoded)
		}

		pack.Recycle(err)
	}
	fmt.Println("sup from end of for loop in Run")
	return
}

func (output *IrcOutput) Run(runner pipeline.OutputRunner,
	helper pipeline.PluginHelper) error {
	if runner.Encoder() == nil {
		return errors.New("Encoder required.")
	}

	output.runner = runner

	// Register callbacks to handle events
	registerCallbacks(output)

	var err error

	// Connect to the Irc Server
	err = output.Conn.Connect(output.Server)
	if err != nil {
		return fmt.Errorf("Unable to connect to irc server %s: %s",
			output.Server, err)
	}

	// Start a goroutine for recieving messages, and throttling before sending
	// to the Irc Server
	output.wg.Add(1)
	go processOutQueue(output)

	var outgoing []byte
	ok := true
	inChan := runner.InChan()
	var pack *pipeline.PipelinePack
	for ok {
		select {
		case pack, ok = <-inChan:
		case <-output.die:
			ok = false
		}
		if !ok {
			break
		}
		outgoing, err = runner.Encode(pack)
		if err != nil {
			output.runner.LogError(err)
		} else if outgoing != nil {
			// Send the message to each irc channel. If the out queue is full,
			// then we need to drop the message and log an error.
			for i, ircChannel := range output.Channels {
				ircMsg := IrcMsg{outgoing, ircChannel, i}
				select {
				case output.OutQueue <- ircMsg:
				default:
					output.runner.LogError(ErrOutQueueFull)
				}
			}
		}
		pack.Recycle()
	}
	output.cleanup()
	return nil
}

func (clo *CloudLoggingOutput) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {
	var (
		pack       *pipeline.PipelinePack
		e          error
		k          string
		m          *logging.LogEntry
		exist      bool
		ok         = true
		inChan     = or.InChan()
		groupBatch = make(map[string]*LogBatch)
		outBatch   *LogBatch
		ticker     = time.Tick(time.Duration(clo.conf.FlushInterval) * time.Millisecond)
	)
	clo.or = or
	go clo.committer()
	for ok {
		select {
		case pack, ok = <-inChan:
			// Closed inChan => we're shutting down, flush data.
			if !ok {
				clo.sendGroupBatch(groupBatch)
				close(clo.batchChan)
				<-clo.outputExit
				break
			}

			k, m, e = clo.Encode(pack)
			pack.Recycle()
			if e != nil {
				or.LogError(e)
				continue
			}

			if k != "" && m != nil {
				outBatch, exist = groupBatch[k]
				if !exist {
					outBatch = &LogBatch{count: 0, batch: make([]*logging.LogEntry, 0, 100), name: k}
					groupBatch[k] = outBatch
				}

				outBatch.batch = append(outBatch.batch, m)
				if outBatch.count++; clo.CheckFlush(int(outBatch.count), len(outBatch.batch)) {
					if len(outBatch.batch) > 0 {
						outBatch.batch = clo.sendBatch(k, outBatch.batch, outBatch.count)
						outBatch.count = 0
					}
				}
			}
		case <-ticker:
			clo.sendGroupBatch(groupBatch)
		case err = <-clo.outputExit:
			ok = false
		}
	}
	return
}

func (cmo *CloudMonitoringOutput) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {
	var (
		pack     *pipeline.PipelinePack
		e        error
		m        *cloudmonitoring.TimeseriesPoint
		ok       = true
		count    int64
		inChan   = or.InChan()
		outBatch = make([]*cloudmonitoring.TimeseriesPoint, 0, 200)
		ticker   = time.Tick(time.Duration(cmo.conf.FlushInterval) * time.Millisecond)
	)
	cmo.or = or
	go cmo.committer()
	for ok {
		select {
		case pack, ok = <-inChan:
			// Closed inChan => we're shutting down, flush data.
			if !ok {
				if len(outBatch) > 0 {
					cmo.sendBatch(outBatch, count)
				}
				close(cmo.batchChan)
				<-cmo.outputExit
				break
			}

			m, e = cmo.Encode(pack)
			pack.Recycle()
			if e != nil {
				or.LogError(e)
				continue
			}

			if m != nil {
				outBatch = append(outBatch, m)

				if count++; cmo.CheckFlush(int(count), len(outBatch)) {
					if len(outBatch) > 0 {
						outBatch = cmo.sendBatch(outBatch, count)
						count = 0
					}
				}
			}
		case <-ticker:
			if len(outBatch) > 0 {
				outBatch = cmo.sendBatch(outBatch, count)
			}
			count = 0
		case err = <-cmo.outputExit:
			ok = false
		}
	}
	return
}

func (cef *CefOutput) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {

	var (
		facility, priority syslog.Priority
		ident              string
		ok                 bool
		p                  syslog.Priority
		e                  error
		pack               *pipeline.PipelinePack
	)
	syslogMsg := new(SyslogMsg)
	for pack = range or.InChan() {

		// default values
		facility, priority = syslog.LOG_LOCAL4, syslog.LOG_INFO
		ident = "heka_no_ident"

		priField := pack.Message.FindFirstField("cef_meta.syslog_priority")
		if priField != nil {
			priStr := priField.ValueString[0]
			if p, ok = SYSLOG_PRIORITY[priStr]; ok {
				priority = p
			}
		}

		facField := pack.Message.FindFirstField("cef_meta.syslog_facility")
		if facField != nil {
			facStr := facField.ValueString[0]
			if p, ok = SYSLOG_FACILITY[facStr]; ok {
				facility = p
			}
		}

		idField := pack.Message.FindFirstField("cef_meta.syslog_ident")
		if idField != nil {
			ident = idField.ValueString[0]
		}

		syslogMsg.priority = priority | facility
		syslogMsg.prefix = ident
		syslogMsg.payload = pack.Message.GetPayload()
		pack.Recycle()

		_, e = cef.syslogWriter.WriteString(syslogMsg.priority, syslogMsg.prefix,
			syslogMsg.payload)

		if e != nil {
			or.LogError(e)
		}
	}

	cef.syslogWriter.Close()
	return
}

func (cwo *CloudwatchOutput) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {
	inChan := or.InChan()

	payloads := make(chan CloudwatchDatapoints, cwo.backlog)
	go cwo.Submitter(payloads, or)

	var (
		pack          *pipeline.PipelinePack
		msg           *message.Message
		rawDataPoints *CloudwatchDatapointPayload
		dataPoints    *CloudwatchDatapoints
	)
	dataPoints = new(CloudwatchDatapoints)
	dataPoints.Datapoints = make([]cloudwatch.MetricDatum, 0, 0)

	for pack = range inChan {
		rawDataPoints = new(CloudwatchDatapointPayload)
		msg = pack.Message
		err = json.Unmarshal([]byte(msg.GetPayload()), rawDataPoints)
		if err != nil {
			or.LogMessage(fmt.Sprintf("warning, unable to parse payload: %s", err))
			err = nil
			continue
		}
		// Run through the list and convert them to CloudwatchDatapoints
		for _, rawDatum := range rawDataPoints.Datapoints {
			datum := cloudwatch.MetricDatum{
				Dimensions:      rawDatum.Dimensions,
				MetricName:      rawDatum.MetricName,
				Unit:            rawDatum.Unit,
				Value:           rawDatum.Value,
				StatisticValues: rawDatum.StatisticValues,
			}
			if rawDatum.Timestamp != "" {
				parsedTime, err := message.ForgivingTimeParse("", rawDatum.Timestamp, cwo.tzLocation)
				if err != nil {
					or.LogMessage(fmt.Sprintf("unable to parse timestamp for datum: %s", rawDatum))
					continue
				}
				datum.Timestamp = parsedTime
			}
			dataPoints.Datapoints = append(dataPoints.Datapoints, datum)
		}
		payloads <- *dataPoints
		dataPoints.Datapoints = dataPoints.Datapoints[:0]
		rawDataPoints.Datapoints = rawDataPoints.Datapoints[:0]
		pack.Recycle()
	}
	or.LogMessage("shutting down AWS Cloudwatch submitter")
	cwo.stopChan <- true
	<-cwo.stopChan
	return
}

func (k *KafkaOutput) Run(or pipeline.OutputRunner, h pipeline.PluginHelper) (err error) {
	defer func() {
		k.producer.Close()
		k.client.Close()
	}()

	if or.Encoder() == nil {
		return errors.New("Encoder required.")
	}

	inChan := or.InChan()
	errChan := k.producer.Errors()
	var wg sync.WaitGroup
	wg.Add(1)
	go k.processKafkaErrors(or, errChan, &wg)

	var (
		pack  *pipeline.PipelinePack
		topic = k.config.Topic
		key   sarama.Encoder
	)

	for pack = range inChan {
		atomic.AddInt64(&k.processMessageCount, 1)

		if k.topicVariable != nil {
			topic = getMessageVariable(pack.Message, k.topicVariable)
		}
		if k.hashVariable != nil {
			key = sarama.StringEncoder(getMessageVariable(pack.Message, k.hashVariable))
		}

		if msgBytes, err := or.Encode(pack); err == nil {
			if msgBytes != nil {
				err = k.producer.QueueMessage(topic, key, sarama.ByteEncoder(msgBytes))
				if err != nil {
					atomic.AddInt64(&k.processMessageFailures, 1)
					or.LogError(err)
				}
			} else {
				atomic.AddInt64(&k.processMessageDiscards, 1)
			}
		} else {
			atomic.AddInt64(&k.processMessageFailures, 1)
			or.LogError(err)
		}
		pack.Recycle()
	}
	errChan <- Shutdown
	wg.Wait()
	return
}

func (zi *ZeroMQInput) Run(ir pipeline.InputRunner, h pipeline.PluginHelper) error {
	// Get the InputRunner's chan to receive empty PipelinePacks
	packs := ir.InChan()

	var decoding chan<- *pipeline.PipelinePack
	if zi.conf.Decoder != "" {
		// Fetch specified decoder
		decoder, ok := h.DecoderSet().ByName(zi.conf.Decoder)
		if !ok {
			err := fmt.Errorf("Could not find decoder", zi.conf.Decoder)
			return err
		}

		// Get the decoder's receiving chan
		decoding = decoder.InChan()
	}

	var pack *pipeline.PipelinePack
	var count int
	var b []byte
	var err error

	// Read data from websocket broadcast chan
	for {
		b, err = zi.socket.Recv(0)
		if err != nil {
			ir.LogError(err)
			continue
		}

		// Grab an empty PipelinePack from the InputRunner
		pack = <-packs

		// Trim the excess empty bytes
		count = len(b)
		pack.MsgBytes = pack.MsgBytes[:count]

		// Copy ws bytes into pack's bytes
		copy(pack.MsgBytes, b)

		if decoding != nil {
			// Send pack onto decoder
			decoding <- pack
		} else {
			// Send pack into Heka pipeline
			ir.Inject(pack)
		}
	}

	return nil
}

func (this *SandboxManagerFilter) Run(fr pipeline.FilterRunner,
	h pipeline.PluginHelper) (err error) {

	inChan := fr.InChan()

	var ok = true
	var pack *pipeline.PipelinePack
	var delta int64

	this.restoreSandboxes(fr, h, this.workingDirectory)
	for ok {
		select {
		case pack, ok = <-inChan:
			if !ok {
				break
			}
			atomic.AddInt64(&this.processMessageCount, 1)
			delta = time.Now().UnixNano() - pack.Message.GetTimestamp()
			if math.Abs(float64(delta)) >= 5e9 {
				fr.LogError(fmt.Errorf("Discarded control message: %d seconds skew",
					delta/1e9))
				pack.Recycle()
				break
			}
			action, _ := pack.Message.GetFieldValue("action")
			switch action {
			case "load":
				current := int(atomic.LoadInt32(&this.currentFilters))
				if current < this.maxFilters {
					err := this.loadSandbox(fr, h, this.workingDirectory, pack.Message)
					if err != nil {
						fr.LogError(err)
					}
				} else {
					fr.LogError(fmt.Errorf("%s attempted to load more than %d filters",
						fr.Name(), this.maxFilters))
				}
			case "unload":
				fv, _ := pack.Message.GetFieldValue("name")
				if name, ok := fv.(string); ok {
					name = getSandboxName(fr.Name(), name)
					if this.pConfig.RemoveFilterRunner(name) {
						removeAll(this.workingDirectory, fmt.Sprintf("%s.*", name))
					}
				}
			}
			pack.Recycle()
		}
	}
	return
}

func (s *SandboxEncoder) Encode(pack *pipeline.PipelinePack) (output []byte, err error) {
	if s.sb == nil {
		err = errors.New("No sandbox.")
		return
	}
	atomic.AddInt64(&s.processMessageCount, 1)
	s.injected = false

	var startTime time.Time
	if s.sample {
		startTime = time.Now()
	}
	cowpack := new(pipeline.PipelinePack)
	cowpack.Message = pack.Message   // the actual copy will happen if write_message is called
	cowpack.MsgBytes = pack.MsgBytes // no copying is necessary since we don't change it
	retval := s.sb.ProcessMessage(cowpack)
	if retval == 0 && !s.injected {
		// `inject_message` was never called, protobuf encode the copy on write
		// message.
		if s.output, err = s.cEncoder.EncodeMessage(cowpack.Message); err != nil {
			return
		}
	}

	if s.sample {
		duration := time.Since(startTime).Nanoseconds()
		s.reportLock.Lock()
		s.processMessageDuration += duration
		s.processMessageSamples++
		s.reportLock.Unlock()
	}
	s.sample = 0 == rand.Intn(s.sampleDenominator)

	if retval > 0 {
		err = fmt.Errorf("FATAL: %s", s.sb.LastError())
		return
	}
	if retval == -2 {
		// Encoder has nothing to return.
		return nil, nil
	}
	if retval < 0 {
		atomic.AddInt64(&s.processMessageFailures, 1)
		err = fmt.Errorf("Failed serializing: %s", s.sb.LastError())
		return
	}
	return s.output, nil
}

func (k *KinesisOutput) HandlePackage(or pipeline.OutputRunner, pack *pipeline.PipelinePack) error {

	// If we are flushing, wait until we have finished.
	k.flushLock.Lock()
	defer k.flushLock.Unlock()

	// encode the packages.
	msg, err := or.Encode(pack)
	if err != nil {
		errOut := fmt.Errorf("Error encoding message: %s", err)
		or.LogError(errOut)
		pack.Recycle(nil)
		return errOut
	}

	// If we only care about the Payload...
	if k.config.PayloadOnly {
		msg = []byte(pack.Message.GetPayload())
	}

	var tmp []byte
	// if we already have data then we should append.
	if len(k.batchedData) > 0 {
		tmp = append(append(k.batchedData, []byte(",")...), msg...)
	} else {
		tmp = msg
	}

	// if we can't fit the data in this record
	if len(tmp) > k.KINESIS_RECORD_SIZE {
		// add the existing data to the output batch
		array := append(append([]byte("["), k.batchedData...), []byte("]")...)
		k.AddToRecordBatch(or, array)

		// update the batched data to only contain the current message.
		k.batchedData = msg
	} else {
		// otherwise we add the existing data to a batch
		k.batchedData = tmp
	}

	// do reporting and tidy up
	atomic.AddInt64(&k.processMessageCount, 1)
	pack.Recycle(nil)

	return nil
}