Exemplo n.º 1
0
func main() {
	// Put os.Exit in a deferred statement so that other defers get executed prior to
	// the os.Exit call.
	exitCode := 0
	defer func() {
		os.Exit(exitCode)
	}()

	// Metron is intended to be light-weight so we occupy only one core
	runtime.GOMAXPROCS(1)

	flag.Parse()
	config, err := config.ParseConfig(*configFilePath)
	if err != nil {
		panic(err)
	}

	log := logger.NewLogger(*debug, *logFilePath, "metron", config.Syslog)
	log.Info("Startup: Setting up the Metron agent")

	profiler := profiler.New(*cpuprofile, *memprofile, 1*time.Second, log)
	profiler.Profile()
	defer profiler.Stop()

	dopplerClientPool, err := initializeDopplerPool(config, log)
	if err != nil {
		log.Errorf("Failed to initialize the doppler pool: %s", err.Error())
		os.Exit(-1)
	}

	dopplerForwarder := dopplerforwarder.New(dopplerClientPool, []byte(config.SharedSecret), uint(config.BufferSize), config.EnableBuffer, log)
	messageTagger := tagger.New(config.Deployment, config.Job, config.Index, dopplerForwarder)
	aggregator := messageaggregator.New(messageTagger, log)

	statsStopChan := make(chan struct{})
	initializeMetrics(messageTagger, config, statsStopChan, log)

	dropsondeUnmarshaller := eventunmarshaller.New(aggregator, log)
	metronAddress := fmt.Sprintf("127.0.0.1:%d", config.DropsondeIncomingMessagesPort)
	dropsondeReader, err := networkreader.New(metronAddress, "dropsondeAgentListener", dropsondeUnmarshaller, log)
	if err != nil {
		log.Errorf("Failed to listen on %s: %s", metronAddress, err)
		exitCode = 1
		return
	}

	log.Info("metron started")
	go dopplerForwarder.Run()
	go dropsondeReader.Start()

	dumpChan := signalmanager.RegisterGoRoutineDumpSignalChannel()
	killChan := signalmanager.RegisterKillSignalChannel()

	for {
		select {
		case <-dumpChan:
			signalmanager.DumpGoRoutine()
		case <-killChan:
			log.Info("Shutting down")
			dopplerForwarder.Stop()
			close(statsStopChan)
			return
		}
	}
}
Exemplo n.º 2
0
func main() {
	seed := time.Now().UnixNano()
	rand.Seed(seed)

	// Put os.Exit in a deferred statement so that other defers get executed prior to
	// the os.Exit call.
	exitCode := 0
	defer func() {
		os.Exit(exitCode)
	}()

	flag.Parse()

	runtime.GOMAXPROCS(runtime.NumCPU())

	localIp, err := localip.LocalIP()
	if err != nil {
		panic(errors.New("Unable to resolve own IP address: " + err.Error()))
	}

	conf, err := config.ParseConfig(*configFile)
	if err != nil {
		panic(err)
	}

	log := logger.NewLogger(*logLevel, *logFilePath, "doppler", conf.Syslog)
	log.Info("Startup: Setting up the doppler server")

	profiler := profiler.New(*cpuprofile, *memprofile, 1*time.Second, log)
	profiler.Profile()
	defer profiler.Stop()

	dropsonde.Initialize(conf.MetronAddress, DOPPLER_ORIGIN)
	storeAdapter := NewStoreAdapter(conf.EtcdUrls, conf.EtcdMaxConcurrentRequests)

	doppler, err := New(log, localIp, conf, storeAdapter, conf.MessageDrainBufferSize, DOPPLER_ORIGIN, time.Duration(conf.WebsocketWriteTimeoutSeconds)*time.Second, time.Duration(conf.SinkDialTimeoutSeconds)*time.Second)

	if err != nil {
		log.Errorf("Failed to create doppler: %s", err.Error())
		exitCode = -1
		return
	}

	go doppler.Start()
	log.Info("Startup: doppler server started.")

	killChan := signalmanager.RegisterKillSignalChannel()
	dumpChan := signalmanager.RegisterGoRoutineDumpSignalChannel()

	releaseNodeChan := dopplerservice.Announce(localIp, config.HeartbeatInterval, conf, storeAdapter, log)
	legacyReleaseNodeChan := dopplerservice.AnnounceLegacy(localIp, config.HeartbeatInterval, conf, storeAdapter, log)

	for {
		select {
		case <-dumpChan:
			signalmanager.DumpGoRoutine()
		case <-killChan:
			log.Info("Shutting down")

			stopped := make(chan bool)
			legacyStopped := make(chan bool)
			releaseNodeChan <- stopped
			legacyReleaseNodeChan <- legacyStopped

			doppler.Stop()

			<-stopped
			<-legacyStopped

			return
		}
	}
}
	BeforeEach(func() {
		tmpDir, err := ioutil.TempDir("/tmp", "tc-test")
		if err != nil {
			Fail(err.Error())
		}

		cpuProfilePath = tmpDir + "/cpu.pprof"
		memProfilePath = tmpDir + "/mem.pprof"
	})

	Describe("cpu profiling", func() {
		It("profiles cpu usage", func() {
			profiler := profiler.New(cpuProfilePath, "", 1*time.Millisecond, logger)
			profiler.Profile()

			profiler.Stop()

			f, err := os.Open(cpuProfilePath)
			Expect(err).NotTo(HaveOccurred())

			_, err = parser.NewCpuProfParser(f)
			Expect(err).NotTo(HaveOccurred())

			memProfile := profiler.GetMemProfileHandle()
			Expect(memProfile).To(BeNil())
		})

		It("panics when there is an error", func() {
			filePath := "/tmp/asdf/asdf.pprof"
			profiler := profiler.New(filePath, "", 1*time.Millisecond, logger)
			Expect(profiler.Profile).To(Panic())
Exemplo n.º 4
0
func main() {
	// Put os.Exit in a deferred statement so that other defers get executed prior to
	// the os.Exit call.
	exitCode := 0
	defer func() {
		os.Exit(exitCode)
	}()

	flag.Parse()

	config, err := config.ParseConfig(*logLevel, *configFile, *logFilePath)
	if err != nil {
		panic(err)
	}

	log := logger.NewLogger(*logLevel, *logFilePath, "loggregator trafficcontroller", config.Syslog)
	log.Info("Startup: Setting up the loggregator traffic controller")

	dropsonde.Initialize("127.0.0.1:"+strconv.Itoa(config.MetronPort), "LoggregatorTrafficController")

	profiler := profiler.New(*cpuprofile, *memprofile, 1*time.Second, log)
	profiler.Profile()
	defer profiler.Stop()

	uptimeMonitor := monitor.NewUptimeMonitor(time.Duration(config.MonitorIntervalSeconds) * time.Second)
	go uptimeMonitor.Start()
	defer uptimeMonitor.Stop()

	etcdAdapter := DefaultStoreAdapterProvider(config.EtcdUrls, config.EtcdMaxConcurrentRequests)
	err = etcdAdapter.Connect()
	if err != nil {
		log.Errorf("Cannot connect to ETCD: %s", err.Error())
		exitCode = -1
		return
	}

	ipAddress, err := localip.LocalIP()
	if err != nil {
		panic(err)
	}

	logAuthorizer := authorization.NewLogAccessAuthorizer(*disableAccessControl, config.ApiHost, config.SkipCertVerify)

	uaaClient := uaa_client.NewUaaClient(config.UaaHost, config.UaaClientId, config.UaaClientSecret, config.SkipCertVerify)
	adminAuthorizer := authorization.NewAdminAccessAuthorizer(*disableAccessControl, &uaaClient)

	preferredServers := func(string) bool { return false }
	finder := dopplerservice.NewLegacyFinder(etcdAdapter, int(config.DopplerPort), preferredServers, nil, log)
	finder.Start()

	dopplerCgc := channel_group_connector.NewChannelGroupConnector(finder, newDropsondeWebsocketListener, marshaller.DropsondeLogMessage, log)
	dopplerProxy := dopplerproxy.NewDopplerProxy(logAuthorizer, adminAuthorizer, dopplerCgc, dopplerproxy.TranslateFromDropsondePath, "doppler."+config.SystemDomain, log)
	startOutgoingProxy(net.JoinHostPort(ipAddress, strconv.FormatUint(uint64(config.OutgoingDropsondePort), 10)), dopplerProxy)

	legacyCgc := channel_group_connector.NewChannelGroupConnector(finder, newLegacyWebsocketListener, marshaller.LoggregatorLogMessage, log)
	legacyProxy := dopplerproxy.NewDopplerProxy(logAuthorizer, adminAuthorizer, legacyCgc, dopplerproxy.TranslateFromLegacyPath, "loggregator."+config.SystemDomain, log)
	startOutgoingProxy(net.JoinHostPort(ipAddress, strconv.FormatUint(uint64(config.OutgoingPort), 10)), legacyProxy)

	killChan := signalmanager.RegisterKillSignalChannel()
	dumpChan := signalmanager.RegisterGoRoutineDumpSignalChannel()

	for {
		select {
		case <-dumpChan:
			signalmanager.DumpGoRoutine()
		case <-killChan:
			log.Info("Shutting down")
			return
		}
	}
}