Golang graceful.Wait函数代码示例

func main() {
	var err error
	flags.Parse(os.Args[1:])

	conf, err := server.NewConfigFromFile(*confFile, os.Getenv("CONFIG"))
	if err != nil {
		log.Fatal(err)
	}

	srv := server.New(conf)
	if err := srv.Configure(); err != nil {
		log.Fatal(err)
	}

	lg.Infof("** Imgry Server v%s at %s **", imgry.VERSION, srv.Config.Bind)
	lg.Infof("** Engine: %s", srv.ImageEngine.Version())

	graceful.AddSignal(syscall.SIGINT, syscall.SIGTERM)
	graceful.Timeout(30 * time.Second)
	graceful.PreHook(srv.Close)
	graceful.PostHook(srv.Shutdown)

	err = graceful.ListenAndServe(srv.Config.Bind, srv.NewRouter())
	if err != nil {
		lg.Fatal(err.Error())
	}
	graceful.Wait()
}

// Serve starts the go-horizon system, binding it to a socket, setting up
// the shutdown signals and starting the appropriate db-streaming pumps.
func (a *App) Serve() {

	a.web.router.Compile()
	http.Handle("/", a.web.router)

	listenStr := fmt.Sprintf(":%d", a.config.Port)
	listener := bind.Socket(listenStr)
	log.Infof(a.ctx, "Starting horizon on %s", listener.Addr())

	graceful.HandleSignals()
	bind.Ready()
	graceful.PreHook(func() {
		log.Info(a.ctx, "received signal, gracefully stopping")
		a.Cancel()
	})
	graceful.PostHook(func() {
		log.Info(a.ctx, "stopped")
	})

	if a.config.Autopump {
		sse.SetPump(a.ctx, sse.AutoPump)
	} else {
		sse.SetPump(a.ctx, db.NewLedgerClosePump(a.ctx, a.historyDb))
	}

	err := graceful.Serve(listener, http.DefaultServeMux)

	if err != nil {
		log.Panic(a.ctx, err)
	}

	graceful.Wait()
}

// Serve starts the horizon system, binding it to a socket, setting up
// the shutdown signals and starting the appropriate db-streaming pumps.
func (a *App) Serve() {

	a.web.router.Compile()
	http.Handle("/", a.web.router)

	listenStr := fmt.Sprintf(":%d", a.config.Port)
	listener := bind.Socket(listenStr)
	log.Infof("Starting horizon on %s", listener.Addr())

	graceful.HandleSignals()
	bind.Ready()
	graceful.PreHook(func() {
		log.Info("received signal, gracefully stopping")
		a.Close()
	})
	graceful.PostHook(func() {
		log.Info("stopped")
	})

	sse.SetPump(a.pump.Subscribe())

	err := graceful.Serve(listener, http.DefaultServeMux)

	if err != nil {
		log.Panic(err)
	}

	graceful.Wait()
}

func main() {
	flags.Parse(os.Args[1:])

	// Override config file by the CONFIG env var, if specified.
	if os.Getenv("CONFIG") != "" {
		*confFile = os.Getenv("CONFIG")
	}

	// Read Config.
	conf, err := config.New(*confFile)
	if err != nil {
		log.Fatal(err)
	}

	// Run QMD.
	app, err := qmd.New(conf)
	if err != nil {
		log.Fatal(err)
	}
	go app.WatchScripts()
	go app.StartWorkers()
	go app.ListenQueue()

	graceful.AddSignal(syscall.SIGINT, syscall.SIGTERM)
	graceful.PreHook(app.Close)

	// Start the API server.
	log.Printf("Starting QMD API at %s\n", conf.Bind)
	err = graceful.ListenAndServe(conf.Bind, rest.Routes(app))
	if err != nil {
		log.Fatal(err)
	}
	graceful.Wait()
}

// Serve starts kami with reasonable defaults.
// It works (exactly) like Goji, looking for Einhorn, the bind flag, GOJI_BIND...
func Serve() {
	if !flag.Parsed() {
		flag.Parse()
	}

	// Install our handler at the root of the standard net/http default mux.
	// This allows packages like expvar to continue working as expected.
	http.Handle("/", Handler())

	listener := bind.Default()
	log.Println("Starting kami on", listener.Addr())

	graceful.HandleSignals()
	bind.Ready()
	graceful.PreHook(func() { log.Printf("kami received signal, gracefully stopping") })
	graceful.PostHook(func() { log.Printf("kami stopped") })

	err := graceful.Serve(listener, http.DefaultServeMux)

	if err != nil {
		log.Fatal(err)
	}

	graceful.Wait()
}

func main() {
	var err error
	flags.Parse(os.Args[1:])

	conf, err := server.NewConfigFromFile(*confFile, os.Getenv("CONFIG"))
	if err != nil {
		log.Fatal(err)
	}

	srv := server.New(conf)

	graceful.AddSignal(syscall.SIGINT, syscall.SIGTERM)
	graceful.PreHook(func() { srv.Close() })

	if err := srv.Configure(); err != nil {
		log.Fatal(err)
	}

	lg.Infof("** Imgry Server v%s at %s **\n", imgry.VERSION, srv.Config.Server.Addr)
	lg.Infof("** Engine: %s", imagick.Engine{}.Version())

	err = graceful.ListenAndServe(srv.Config.Server.Addr, srv.NewRouter())
	if err != nil {
		lg.Fatal(err.Error())
	}
	graceful.Wait()
}

func main() {
	start := time.Now()
	defer func() {
		end := time.Now()
		fmt.Printf("The call took %v to run.\n", end.Sub(start))
	}()
	if len(os.Args) == 1 {
		help("unkown")
		return
	}
	switch cmd := os.Args[1]; {
	case cmd == "server" || cmd == "s":
		startServer()
		defer graceful.Wait()
	case cmd == "generate" || cmd == "g":
		generate()
	case cmd == "init" || cmd == "i":
		workspace()
	case cmd == "new" || cmd == "n":
		article(os.Args[2:])
	case cmd == "help" || cmd == "h":
		if len(os.Args) > 2 {
			help(os.Args[2])
		}
	case cmd == "deploy" || cmd == "d":
		server.Deploy()
	default:
		help("unkown")
	}
}

// Serve starts Goji using reasonable defaults.
func Serve() {
	if !flag.Parsed() {
		flag.Parse()
	}

	log.SetFlags(log.Flags() | log.Lmicroseconds)

	// Install our handler at the root of the standard net/http default mux.
	// This allows packages like expvar to continue working as expected.
	http.Handle("/", DefaultMux)

	listener := bind.Default()
	log.Println("Starting Goji on", listener.Addr())

	graceful.HandleSignals()
	bind.Ready()

	err := graceful.Serve(listener, http.DefaultServeMux)

	if err != nil {
		log.Fatal(err)
	}

	graceful.Wait()
}

func serve() {
	goji.DefaultMux.Compile()
	// Install our handler at the root of the standard net/http default mux.
	// This allows packages like expvar to continue working as expected.
	http.Handle("/", goji.DefaultMux)

	listener := bind.Socket(bind.Sniff())
	log.Println("Starting Goji on", listener.Addr())

	graceful.HandleSignals()
	bind.Ready()
	graceful.PreHook(func() { log.Printf("Goji received signal, gracefully stopping") })
	graceful.PostHook(func() {
		log.Printf("Goji stopped")
		log.Printf("Shutting down the server")
		handler.DB.Close()
		log.Printf("Database shut down. Terminating the process.")
	})

	err := graceful.Serve(listener, http.DefaultServeMux)

	if err != nil {
		log.Fatal(err)
	}

	graceful.Wait()
}

func Run() {
	http.Handle("/", DefaultServerMux)
	listener, err := net.Listen("tcp", Config.App.Bind)
	if err != nil {
		panic(err)
	}
	err = graceful.Serve(listener, DefaultServerMux)
	if err != nil {
		panic(err)
	}
	graceful.Wait()
}

func (s *Server) HTTPServe() {
	httpSocket := bind.Socket(s.HTTPAddr)
	graceful.Timeout(10 * time.Second)
	graceful.PreHook(func() {
		s.logger.Info("Terminating HTTP listener")
	})
	graceful.HandleSignals()
	s.logger.WithField("address", s.HTTPAddr).Info("HTTP server listening")
	bind.Ready()

	if err := graceful.Serve(httpSocket, s.Handler()); err != nil {
		s.logger.WithError(err).Error("HTTP server shut down due to error")
	}
	graceful.Wait()
}

func main() {
	// sets the maximum number of CPUs that can be executing simultaneously
	runtime.GOMAXPROCS(runtime.NumCPU())

	// override defaults via env vars
	if os.Getenv("ES_HOST") != "" {
		esHost = os.Getenv("ES_HOST")
	}
	if os.Getenv("ES_PORT") != "" {
		esPort = os.Getenv("ES_PORT")
	}
	if os.Getenv("REDIS_HOST") != "" {
		redisHost = os.Getenv("REDIS_HOST")
	}
	if os.Getenv("REDIS_PORT") != "" {
		redisPort = os.Getenv("REDIS_PORT")
	}
	if os.Getenv("PUBLIC_DIR") != "" {
		publicDir = os.Getenv("PUBLIC_DIR")
	}

	// log endpoints
	log.Infof("Redis endpoint set to %s:%s", redisHost, redisPort)
	log.Infof("Elasticsearch endpoint set to %s:%s", esHost, esPort)

	// register available tiling types
	tile.Register("heatmap", elastic.NewHeatmapTile(esHost, esPort))
	tile.Register("topic_count", elastic.NewTopCountTile(esHost, esPort))
	// register available meta data types
	meta.Register("default", elastic.NewDefaultMeta(esHost, esPort))
	// register available store types
	store.Register("redis", redis.NewConnection(redisHost, redisPort))

	// create server
	app := api.New(publicDir)

	// catch kill signals for graceful shutdown
	graceful.AddSignal(syscall.SIGINT, syscall.SIGTERM)
	// start server
	log.Infof("Prism server listening on port %s", port)
	err := graceful.ListenAndServe(":"+port, app)
	if err != nil {
		log.Error(err)
	}
	// wait until server gracefully exits
	graceful.Wait()
}

func serve(mux *web.Mux, bindProtocol, bindPort string) {
	// For now, this is completely lifted from goji's default handler.
	http.Handle("/", mux)
	log.Printf("Starting on %v/%v", bindProtocol, bindPort)
	graceful.HandleSignals()
	listener, err := net.Listen(bindProtocol, bindPort)
	if err != nil {
		log.Fatalf("Couldn't open socket on %v/%v: %v", bindProtocol, bindPort, err)
	}
	graceful.PreHook(func() { log.Info("Received signal, gracefully stopping.") })
	graceful.PostHook(func() { log.Info("Stopped.") })
	err = graceful.Serve(listener, http.DefaultServeMux)
	if err != nil {
		log.Fatalf("Couldn't serve on %v/%v: %v", bindProtocol, bindPort, err)
	}
	graceful.Wait()
}

// SetupMainServer allocates a listener socket and starts a web server with graceful restart
// on the specified IP address and port. The ipPort has the format "ip_address:port" or
// ":port" for 0.0.0.0/port.
func SetupMainServer(ipPort string, mux *web.Mux) {
	listener, err := net.Listen("tcp4", ipPort)
	if err != nil {
		FatalError(err.Error())
	}

	// Install our handler at the root of the standard net/http default mux.
	// This allows packages like expvar to continue working as expected.
	mux.Compile()
	http.Handle("/", mux)

	graceful.HandleSignals()
	graceful.PreHook(func() { log15.Warn("Gracefully stopping on signal") })
	graceful.PostHook(func() { log.Printf("Gracefully stopped") })

	err = graceful.Serve(listener, http.DefaultServeMux)
	if err != nil {
		FatalError(err.Error())
	}

	graceful.Wait()
}

func main() {
	runtime.GOMAXPROCS(runtime.NumCPU())

	// Parse the flags and store them as a conf struct
	flag.Parse()
	conf := skeletor.Conf{
		Prod:    *prod,
		Version: version,
	}
	skeletor.SaveConf(&conf)

	// Start the web server
	graceful.AddSignal(syscall.SIGINT, syscall.SIGTERM)
	app := api.New()
	log.Println("Skeletor server listening on", *bind)
	err := graceful.ListenAndServe(*bind, app)
	if err != nil {
		log.Fatal(err)
	}

	graceful.Wait()
}