Пример #1
0
func (runner *NATSRunner) Start() {
	if runner.natsSession != nil {
		panic("starting an already started NATS runner!!!")
	}

	_, err := exec.LookPath("gnatsd")
	if err != nil {
		fmt.Println("You need gnatsd installed!")
		os.Exit(1)
	}

	cmd := exec.Command("gnatsd", "-p", strconv.Itoa(runner.port))
	sess, err := gexec.Start(
		cmd,
		gexec.NewPrefixedWriter("\x1b[32m[o]\x1b[34m[gnatsd]\x1b[0m ", ginkgo.GinkgoWriter),
		gexec.NewPrefixedWriter("\x1b[91m[e]\x1b[34m[gnatsd]\x1b[0m ", ginkgo.GinkgoWriter),
	)
	Ω(err).ShouldNot(HaveOccurred(), "Make sure to have gnatsd on your path")

	runner.natsSession = sess

	messageBus := yagnats.NewApceraClientWrapper([]string{fmt.Sprintf("nats://127.0.0.1:%d", runner.port)})

	Eventually(func() error {
		return messageBus.Connect()
	}, 5, 0.1).ShouldNot(HaveOccurred())

	runner.MessageBus = messageBus
}
Пример #2
0
func newMessageBus(c *config.Config) (yagnats.ApceraWrapperNATSClient, error) {
	natsMembers := make([]string, len(c.Nats))
	for _, info := range c.Nats {
		uri := url.URL{
			Scheme: "nats",
			User:   url.UserPassword(info.User, info.Pass),
			Host:   fmt.Sprintf("%s:%d", info.Host, info.Port),
		}
		natsMembers = append(natsMembers, uri.String())
	}
	natsClient := yagnats.NewApceraClientWrapper(natsMembers)

	err := natsClient.Connect()

	return natsClient, err
}
Пример #3
0
func main() {
	c := config.DefaultConfig()
	logCounter := vcap.NewLogCounter()
	InitLoggerFromConfig(c, logCounter)

	if configFile != "" {
		c = config.InitConfigFromFile(configFile)
	}

	// setup number of procs
	if c.GoMaxProcs != 0 {
		runtime.GOMAXPROCS(c.GoMaxProcs)
	}

	InitLoggerFromConfig(c, logCounter)
	logger := steno.NewLogger("router.main")

	natsMembers := make([]string, len(c.Nats))
	for _, info := range c.Nats {
		uri := url.URL{
			Scheme: "nats",
			User:   url.UserPassword(info.User, info.Pass),
			Host:   fmt.Sprintf("%s:%d", info.Host, info.Port),
		}
		natsMembers = append(natsMembers, uri.String())
	}
	natsClient := yagnats.NewApceraClientWrapper(natsMembers)

	err := natsClient.Connect()

	if err != nil {
		logger.Fatalf("Error connecting to NATS: %s\n", err)
	}

	registry := rregistry.NewRouteRegistry(c, natsClient)

	varz := rvarz.NewVarz(registry)

	accessLogger, err := access_log.CreateRunningAccessLogger(c)
	if err != nil {
		logger.Fatalf("Error creating access logger: %s\n", err)
	}

	args := proxy.ProxyArgs{
		EndpointTimeout: c.EndpointTimeout,
		Ip:              c.Ip,
		TraceKey:        c.TraceKey,
		Registry:        registry,
		Reporter:        varz,
		AccessLogger:    accessLogger,
	}
	p := proxy.NewProxy(args)

	router, err := router.NewRouter(c, p, natsClient, registry, varz, logCounter)
	if err != nil {
		logger.Errorf("An error occurred: %s", err.Error())
		os.Exit(1)
	}

	signals := make(chan os.Signal, 1)
	signal.Notify(signals, syscall.SIGTERM, syscall.SIGINT, syscall.SIGUSR1)

	errChan := router.Run()

	logger.Info("gorouter.started")

	select {
	case err := <-errChan:
		if err != nil {
			logger.Errorf("Error occurred: %s", err.Error())
			os.Exit(1)
		}
	case sig := <-signals:
		go func() {
			for sig := range signals {
				logger.Infod(
					map[string]interface{}{
						"signal": sig.String(),
					},
					"gorouter.signal.ignored",
				)
			}
		}()

		if sig == syscall.SIGUSR1 {
			logger.Infod(
				map[string]interface{}{
					"timeout": (c.DrainTimeout).String(),
				},
				"gorouter.draining",
			)

			router.Drain(c.DrainTimeout)
		}

		stoppingAt := time.Now()

		logger.Info("gorouter.stopping")

		router.Stop()

		logger.Infod(
			map[string]interface{}{
				"took": time.Since(stoppingAt).String(),
			},
			"gorouter.stopped",
		)
	}

	os.Exit(0)
}