Describe("Read", func() {
		Context("with TLS as the only protocol", func() {
			BeforeEach(func() {
				protocols = []string{"tls"}
			})

			It("doesn't panic if there are tls dopplers", func() {
				event = dopplerservice.Event{
					UDPDopplers: []string{},
					TLSDopplers: []string{"10.0.0.1"},
				}

				l := len(event.TLSDopplers)
				poolMocks["tls"].SetAddressesOutput.ret0 <- l
				Expect(clientreader.Read(clientPool, protocols, event)).To(Equal("tls"))
				Eventually(poolMocks["tls"].SetAddressesCalled).Should(Receive())
			})

			It("panics if there are no tls dopplers", func() {
				event = dopplerservice.Event{
					UDPDopplers: []string{"1.1.1.1.", "2.2.2.2"},
					TLSDopplers: []string{},
				}
				l := len(event.TLSDopplers)
				poolMocks["tls"].SetAddressesOutput.ret0 <- l

				Expect(func() {
					clientreader.Read(clientPool, protocols, event)
				}).To(Panic())
			})
示例#2
0
func initializeDopplerPool(conf *config.Config, logger *gosteno.Logger) (*eventmarshaller.EventMarshaller, error) {
	adapter, err := storeAdapterProvider(conf.EtcdUrls, conf.EtcdMaxConcurrentRequests)
	if err != nil {
		return nil, err
	}
	err = adapter.Connect()
	if err != nil {
		logger.Warnd(map[string]interface{}{
			"error": err.Error(),
		}, "Failed to connect to etcd")
	}

	var protocols []string

	clientPool := make(map[string]clientreader.ClientPool)
	writers := make(map[string]eventmarshaller.ByteWriter)

	for _, protocol := range conf.Protocols {
		proto := string(protocol)
		protocols = append(protocols, proto)
		switch proto {
		case "udp":
			udpCreator := clientpool.NewUDPClientCreator(logger)
			udpWrapper := dopplerforwarder.NewUDPWrapper([]byte(conf.SharedSecret), logger)
			udpPool := clientpool.NewDopplerPool(logger, udpCreator)
			udpForwarder := dopplerforwarder.New(udpWrapper, udpPool, logger)
			clientPool[proto] = udpPool
			writers[proto] = udpForwarder
		case "tcp":
			tcpCreator := clientpool.NewTCPClientCreator(logger, nil)
			tcpWrapper := dopplerforwarder.NewWrapper(logger, proto)
			tcpPool := clientpool.NewDopplerPool(logger, tcpCreator)
			tcpForwarder := dopplerforwarder.New(tcpWrapper, tcpPool, logger)

			tcpBatchInterval := time.Duration(conf.TCPBatchIntervalMilliseconds) * time.Millisecond
			batchWriter, err := batch.NewWriter(tcpForwarder, conf.TCPBatchSizeBytes, tcpBatchInterval, logger)
			if err != nil {
				return nil, err
			}
			clientPool[proto] = tcpPool
			writers[proto] = batchWriter
		case "tls":
			c := conf.TLSConfig
			tlsConfig, err := listeners.NewTLSConfig(c.CertFile, c.KeyFile, c.CAFile)
			if err != nil {
				return nil, err
			}
			tlsConfig.ServerName = "doppler"
			tlsCreator := clientpool.NewTCPClientCreator(logger, tlsConfig)
			tlsWrapper := dopplerforwarder.NewWrapper(logger, proto)
			tlsPool := clientpool.NewDopplerPool(logger, tlsCreator)
			tlsForwarder := dopplerforwarder.New(tlsWrapper, tlsPool, logger)

			tcpBatchInterval := time.Duration(conf.TCPBatchIntervalMilliseconds) * time.Millisecond
			batchWriter, err := batch.NewWriter(tlsForwarder, conf.TCPBatchSizeBytes, tcpBatchInterval, logger)
			if err != nil {
				return nil, err
			}
			clientPool[proto] = tlsPool
			writers[proto] = batchWriter
		}
	}

	finder := dopplerservice.NewFinder(adapter, conf.LoggregatorDropsondePort, protocols, conf.Zone, logger)
	marshaller := eventmarshaller.New(logger)
	finder.Start()

	go func() {
		for {
			protocol := clientreader.Read(clientPool, protocols, finder.Next())
			logger.Infof("Chose protocol %s from last etcd event, updating writer...", protocol)
			marshaller.SetWriter(writers[protocol])
		}
	}()
	return marshaller, nil
}
示例#3
0
func initializeDopplerPool(conf *config.Config, batcher *metricbatcher.MetricBatcher, logger *gosteno.Logger) (*eventmarshaller.EventMarshaller, error) {
	adapter, err := storeAdapterProvider(conf)
	if err != nil {
		return nil, err
	}

	backoffStrategy := retrystrategy.Exponential()
	err = backoff.Connect(adapter, backoffStrategy, logger, connectionRetries)
	if err != nil {
		return nil, err
	}

	var protocols []string
	clientPool := make(map[string]clientreader.ClientPool)
	writers := make(map[string]eventmarshaller.BatchChainByteWriter)

	ip, err := localip.LocalIP()
	if err != nil {
		return nil, err
	}

	for protocol := range conf.Protocols {
		proto := string(protocol)
		protocols = append(protocols, proto)
		switch proto {
		case "udp":
			udpCreator := clientpool.NewUDPClientCreator(logger)
			udpWrapper := dopplerforwarder.NewUDPWrapper([]byte(conf.SharedSecret), logger)
			udpPool := clientpool.NewDopplerPool(logger, udpCreator)
			udpForwarder := dopplerforwarder.New(udpWrapper, udpPool, logger)
			clientPool[proto] = udpPool
			writers[proto] = udpForwarder
		case "tcp":
			tcpCreator := clientpool.NewTCPClientCreator(logger, nil)
			tcpWrapper := dopplerforwarder.NewWrapper(logger, proto)
			tcpPool := clientpool.NewDopplerPool(logger, tcpCreator)
			tcpForwarder := dopplerforwarder.New(tcpWrapper, tcpPool, logger)

			tcpBatchInterval := time.Duration(conf.TCPBatchIntervalMilliseconds) * time.Millisecond

			dropCounter := batch.NewDroppedCounter(tcpForwarder, batcher, origin, ip, conf)
			batchWriter, err := batch.NewWriter(
				"tcp",
				tcpForwarder,
				dropCounter,
				conf.TCPBatchSizeBytes,
				tcpBatchInterval,
				logger,
			)
			if err != nil {
				return nil, err
			}
			clientPool[proto] = tcpPool
			writers[proto] = batchWriter
		case "tls":
			c := conf.TLSConfig
			tlsConfig, err := listeners.NewTLSConfig(c.CertFile, c.KeyFile, c.CAFile)
			if err != nil {
				return nil, err
			}
			tlsConfig.ServerName = "doppler"
			tlsCreator := clientpool.NewTCPClientCreator(logger, tlsConfig)
			tlsWrapper := dopplerforwarder.NewWrapper(logger, proto)
			tlsPool := clientpool.NewDopplerPool(logger, tlsCreator)
			tlsForwarder := dopplerforwarder.New(tlsWrapper, tlsPool, logger)
			tcpBatchInterval := time.Duration(conf.TCPBatchIntervalMilliseconds) * time.Millisecond

			dropCounter := batch.NewDroppedCounter(tlsForwarder, batcher, origin, ip, conf)
			batchWriter, err := batch.NewWriter(
				"tls",
				tlsForwarder,
				dropCounter,
				conf.TCPBatchSizeBytes,
				tcpBatchInterval,
				logger,
			)
			if err != nil {
				return nil, err
			}
			clientPool[proto] = tlsPool
			writers[proto] = batchWriter
		}
	}

	finder := dopplerservice.NewFinder(adapter, conf.LoggregatorDropsondePort, conf.Protocols.Strings(), conf.Zone, logger)
	finder.Start()

	marshaller := eventmarshaller.New(batcher, logger)

	go func() {
		for {
			protocol := clientreader.Read(clientPool, conf.Protocols.Strings(), finder.Next())
			logger.Infof("Chose protocol %s from last etcd event, updating writer...", protocol)
			marshaller.SetWriter(writers[protocol])
		}
	}()

	return marshaller, nil
}