Golang Logger.Fatal方法代码示例

func generateGuid(logger lager.Logger) string {
	uuid, err := uuid.NewV4()
	if err != nil {
		logger.Fatal("Couldn't generate uuid", err)
	}
	return uuid.String()
}

func newUaaClient(logger lager.Logger, clock clock.Clock, c *config.Config) uaa_client.Client {
	if c.RoutingApi.AuthDisabled {
		logger.Info("using-noop-token-fetcher")
		return uaa_client.NewNoOpUaaClient()
	}

	if c.OAuth.Port == -1 {
		logger.Fatal("tls-not-enabled", errors.New("GoRouter requires TLS enabled to get OAuth token"), lager.Data{"token-endpoint": c.OAuth.TokenEndpoint, "port": c.OAuth.Port})
	}

	tokenURL := fmt.Sprintf("https://%s:%d", c.OAuth.TokenEndpoint, c.OAuth.Port)

	cfg := &uaa_config.Config{
		UaaEndpoint:           tokenURL,
		SkipVerification:      c.OAuth.SkipSSLValidation,
		ClientName:            c.OAuth.ClientName,
		ClientSecret:          c.OAuth.ClientSecret,
		CACerts:               c.OAuth.CACerts,
		MaxNumberOfRetries:    c.TokenFetcherMaxRetries,
		RetryInterval:         c.TokenFetcherRetryInterval,
		ExpirationBufferInSec: c.TokenFetcherExpirationBufferTimeInSeconds,
	}

	uaaClient, err := uaa_client.NewClient(logger, cfg, clock)
	if err != nil {
		logger.Fatal("initialize-token-fetcher-error", err)
	}
	return uaaClient
}

func initializeServer(
	bbsClient bbs.Client,
	executorClient executor.Client,
	evacuatable evacuation_context.Evacuatable,
	evacuationReporter evacuation_context.EvacuationReporter,
	logger lager.Logger,
	stackMap rep.StackPathMap,
	supportedProviders []string,
) (ifrit.Runner, string) {
	lrpStopper := initializeLRPStopper(*cellID, executorClient, logger)

	auctionCellRep := auction_cell_rep.New(*cellID, stackMap, supportedProviders, *zone, generateGuid, executorClient, evacuationReporter, logger)
	handlers := handlers.New(auctionCellRep, lrpStopper, executorClient, evacuatable, logger)

	router, err := rata.NewRouter(rep.Routes, handlers)
	if err != nil {
		logger.Fatal("failed-to-construct-router", err)
	}

	ip, err := localip.LocalIP()
	if err != nil {
		logger.Fatal("failed-to-fetch-ip", err)
	}

	port := strings.Split(*listenAddr, ":")[1]
	address := fmt.Sprintf("http://%s:%s", ip, port)

	return http_server.New(*listenAddr, router), address
}

func NewHandler(
	logger lager.Logger,
	webcamHost string,
) Handler {
	director := func(req *http.Request) {
		req.URL.Scheme = "http"
		req.URL.Host = webcamHost
		req.URL.Path = "/"
		req.URL.RawQuery = "action=stream"
	}

	flushInterval, err := time.ParseDuration("10ms")
	if err != nil {
		logger.Fatal("golang broke", err)
	}

	proxy := httputil.ReverseProxy{
		Director:      director,
		FlushInterval: flushInterval,
		ErrorLog:      log.New(ioutil.Discard, "", 0),
	}

	return &handler{
		logger: logger,
		proxy:  proxy,
	}
}

func connectToNatsServer(logger lager.Logger, c *config.Config) yagnats.NATSConn {
	var natsClient yagnats.NATSConn
	var err error

	natsServers := c.NatsServers()
	attempts := 3
	for attempts > 0 {
		natsClient, err = yagnats.Connect(natsServers)
		if err == nil {
			break
		} else {
			attempts--
			time.Sleep(100 * time.Millisecond)
		}
	}

	if err != nil {
		logger.Fatal("nats-connection-error", err)
	}

	natsClient.AddClosedCB(func(conn *nats.Conn) {
		logger.Fatal("nats-connection-closed", errors.New("unexpected close"), lager.Data{"connection": *conn})
	})

	return natsClient
}

func appendSSLConnectionStringParam(logger lager.Logger, driverName, databaseConnectionString, sqlCACertFile string) string {
	switch driverName {
	case "mysql":
		if sqlCACertFile != "" {
			certBytes, err := ioutil.ReadFile(sqlCACertFile)
			if err != nil {
				logger.Fatal("failed-to-read-sql-ca-file", err)
			}

			caCertPool := x509.NewCertPool()
			if ok := caCertPool.AppendCertsFromPEM(certBytes); !ok {
				logger.Fatal("failed-to-parse-sql-ca", err)
			}

			tlsConfig := &tls.Config{
				InsecureSkipVerify: false,
				RootCAs:            caCertPool,
			}

			mysql.RegisterTLSConfig("bbs-tls", tlsConfig)
			databaseConnectionString = fmt.Sprintf("%s?tls=bbs-tls", databaseConnectionString)
		}
	case "postgres":
		if sqlCACertFile == "" {
			databaseConnectionString = fmt.Sprintf("%s?sslmode=disable", databaseConnectionString)
		} else {
			databaseConnectionString = fmt.Sprintf("%s?sslmode=verify-ca&sslrootcert=%s", databaseConnectionString, sqlCACertFile)
		}
	}

	return databaseConnectionString
}

func initializeServer(logger lager.Logger) ifrit.Runner {
	if *staticDirectory == "" {
		logger.Fatal("static-directory-missing", nil)
	}

	transport := &http.Transport{
		Proxy: http.ProxyFromEnvironment,
		Dial: (&net.Dialer{
			Timeout:   ccUploadDialTimeout,
			KeepAlive: ccUploadKeepAlive,
		}).Dial,
		TLSClientConfig: &tls.Config{
			InsecureSkipVerify: *skipCertVerify,
		},
		TLSHandshakeTimeout: ccUploadTLSHandshakeTimeout,
	}

	pollerHttpClient := cf_http.NewClient()
	pollerHttpClient.Transport = transport

	fileServerHandler, err := handlers.New(*staticDirectory, logger)
	if err != nil {
		logger.Error("router-building-failed", err)
		os.Exit(1)
	}

	return http_server.New(*serverAddress, fileServerHandler)
}

func connectToNatsServer(logger lager.Logger, c *config.Config) *nats.Conn {
	var natsClient *nats.Conn
	var err error

	natsServers := c.NatsServers()
	attempts := 3
	for attempts > 0 {
		options := nats.DefaultOptions
		options.Servers = natsServers
		options.PingInterval = c.NatsClientPingInterval
		options.ClosedCB = func(conn *nats.Conn) {
			logger.Fatal("nats-connection-closed", errors.New("unexpected close"), lager.Data{"last_error": conn.LastError()})
		}
		natsClient, err = options.Connect()
		if err == nil {
			break
		} else {
			attempts--
			time.Sleep(100 * time.Millisecond)
		}
	}

	if err != nil {
		logger.Fatal("nats-connection-error", err)
	}

	return natsClient
}

func (*generator) Guid(logger lager.Logger) string {
	guid, err := uuid.NewV4()
	if err != nil {
		logger.Fatal("failed-to-generate-guid", err)
	}
	return guid.String()
}

func initializeNatsEmitter(natsClient diegonats.NATSClient, logger lager.Logger) nats_emitter.NATSEmitter {
	workPool, err := workpool.NewWorkPool(*routeEmittingWorkers)
	if err != nil {
		logger.Fatal("failed-to-construct-nats-emitter-workpool", err, lager.Data{"num-workers": *routeEmittingWorkers}) // should never happen
	}

	return nats_emitter.New(natsClient, workPool, logger)
}

func initializeServiceClient(logger lager.Logger, clock clock.Clock, consulClient *api.Client, sessionManager consuladapter.SessionManager) bbs.ServiceClient {
	consulDBSession, err := consuladapter.NewSessionNoChecks("consul-db", *lockTTL, consulClient, sessionManager)
	if err != nil {
		logger.Fatal("consul-session-failed", err)
	}

	return bbs.NewServiceClient(consulDBSession, clock)
}

func initializeServiceClient(logger lager.Logger) nsync.ServiceClient {
	consulClient, err := consuladapter.NewClientFromUrl(*consulCluster)
	if err != nil {
		logger.Fatal("new-client-failed", err)
	}

	return nsync.NewServiceClient(consulClient, clock.NewClock())
}

func initializeHandler(logger lager.Logger, noaaClient *noaa.Consumer, maxInFlight int, apiClient bbs.Client) http.Handler {
	apiHandler, err := handler.New(apiClient, noaaClient, maxInFlight, *bulkLRPStatusWorkers, logger)
	if err != nil {
		logger.Fatal("initialize-handler.failed", err)
	}

	return apiHandler
}

func createCrypto(logger lager.Logger, secret string) *secure.AesGCM {
	// generate secure encryption key using key derivation function (pbkdf2)
	secretPbkdf2 := secure.NewPbkdf2([]byte(secret), 16)
	crypto, err := secure.NewAesGCM(secretPbkdf2)
	if err != nil {
		logger.Fatal("error-creating-route-service-crypto", err)
	}
	return crypto
}

func wireNetworker(
	log lager.Logger,
	tag string,
	networkPoolCIDR *net.IPNet,
	externalIP net.IP,
	iptablesMgr kawasaki.IPTablesConfigurer,
	interfacePrefix string,
	chainPrefix string,
	propManager *properties.Manager,
	networkModulePath string) gardener.Networker {
	runner := &logging.Runner{CommandRunner: linux_command_runner.New(), Logger: log.Session("network-runner")}

	hostConfigurer := &configure.Host{
		Veth:   &devices.VethCreator{},
		Link:   &devices.Link{Name: "guardian"},
		Bridge: &devices.Bridge{},
		Logger: log.Session("network-host-configurer"),
	}

	containerCfgApplier := &configure.Container{
		Logger: log.Session("network-container-configurer"),
		Link:   &devices.Link{Name: "guardian"},
	}

	idGenerator := kawasaki.NewSequentialIDGenerator(time.Now().UnixNano())
	portPool, err := ports.NewPool(uint32(*portPoolStart), uint32(*portPoolSize), ports.State{})
	if err != nil {
		log.Fatal("invalid pool range", err)
	}

	switch networkModulePath {
	case "":
		return kawasaki.New(
			kawasaki.NewManager(runner, "/var/run/netns"),
			kawasaki.SpecParserFunc(kawasaki.ParseSpec),
			subnets.NewPool(networkPoolCIDR),
			kawasaki.NewConfigCreator(idGenerator, interfacePrefix, chainPrefix, externalIP),
			kawasaki.NewConfigurer(
				hostConfigurer,
				containerCfgApplier,
				iptablesMgr,
				&netns.Execer{},
			),
			propManager,
			iptables.NewPortForwarder(runner),
			portPool,
		)
	default:
		if _, err := os.Stat(networkModulePath); err != nil {
			log.Fatal("failed-to-stat-network-module", err)
			return nil
		}
		return gardener.ForeignNetworkAdaptor{
			ForeignNetworker: genclient.New(networkModulePath),
		}
	}
}