Example #1
0
func main() {

	rootConfig, err := config.NewConfig(os.Args)

	logger := rootConfig.Logger

	err = rootConfig.Validate()
	if err != nil {
		logger.Fatal("Error validating config:", err, lager.Data{"config": rootConfig})
	}

	go func() {
		logger.Info(fmt.Sprintf("Starting profiling server on port %d", rootConfig.ProfilerPort))
		err := http.ListenAndServe(fmt.Sprintf("0.0.0.0:%d", rootConfig.ProfilerPort), nil)
		if err != nil {
			logger.Error("profiler failed with error", err)
		}
	}()

	if _, err := os.Stat(rootConfig.StaticDir); os.IsNotExist(err) {
		logger.Fatal(fmt.Sprintf("staticDir: %s does not exist", rootConfig.StaticDir), nil)
	}

	backends := domain.NewBackends(rootConfig.Proxy.Backends, logger)
	arpManager := domain.NewArmManager(logger)
	cluster := domain.NewCluster(
		backends,
		rootConfig.Proxy.HealthcheckTimeout(),
		logger,
		arpManager,
	)

	handler := api.NewHandler(backends, logger, rootConfig.API, rootConfig.StaticDir)

	members := grouper.Members{
		{
			Name:   "proxy",
			Runner: proxy.NewRunner(cluster, rootConfig.Proxy.Port, logger),
		},
		{
			Name:   "api",
			Runner: api.NewRunner(rootConfig.API.Port, handler, logger),
		},
	}

	if rootConfig.HealthPort != rootConfig.API.Port {
		members = append(members, grouper.Member{
			Name:   "health",
			Runner: health.NewRunner(rootConfig.HealthPort, logger),
		})
	}

	group := grouper.NewDynamic(os.Kill, len(members), len(members))
	process := ifrit.Invoke(group)
	inserter := group.Client().Inserter()
	for _, member := range members {
		inserter <- member
	}
	group.Client().Close()

	err = waitUntilReady(process, logger)
	if err != nil {
		logger.Fatal("Error starting switchboard", err, lager.Data{"proxyConfig": rootConfig.Proxy})
	}

	logger.Info("Proxy started", lager.Data{"proxyConfig": rootConfig.Proxy})

	err = ioutil.WriteFile(rootConfig.PidFile, []byte(strconv.Itoa(os.Getpid())), 0644)
	if err == nil {
		logger.Info(fmt.Sprintf("Wrote pidFile to %s", rootConfig.PidFile))
	} else {
		logger.Fatal("Cannot write pid to file", err, lager.Data{"pidFile": rootConfig.PidFile})
	}

	err = <-process.Wait()
	if err != nil {
		logger.Fatal("Switchboard exited unexpectedly", err, lager.Data{"proxyConfig": rootConfig.Proxy})
	}
}
Example #2
0
var _ = Describe("Cluster", func() {
	var backends *fakes.FakeBackends
	var logger lager.Logger
	var cluster domain.Cluster
	var fakeArpManager *fakes.FakeArpManager
	const healthcheckTimeout = time.Second

	BeforeEach(func() {
		fakeArpManager = nil
		backends = &fakes.FakeBackends{}
	})

	JustBeforeEach(func() {
		logger = lagertest.NewTestLogger("Cluster test")
		cluster = domain.NewCluster(backends, healthcheckTimeout, logger, fakeArpManager)
	})

	Describe("Monitor", func() {
		var backend1, backend2, backend3 *fakes.FakeBackend
		var urlGetter *fakes.FakeUrlGetter
		var healthyResponse = &http.Response{
			Body:       &fakes.FakeReadWriteCloser{},
			StatusCode: http.StatusOK,
		}

		BeforeEach(func() {
			backend1 = &fakes.FakeBackend{}
			backend1.AsJSONReturns(domain.BackendJSON{Host: "10.10.1.2"})
			backend1.HealthcheckUrlReturns("backend1")