Golang Template.ExternalURL方法代码示例

//.........这里部分代码省略.........
	})

	amURL, err := extURL(*listenAddress, *externalURL)
	if err != nil {
		log.Fatal(err)
	}

	waitFunc := meshWait(mrouter, 5*time.Second)
	timeoutFunc := func(d time.Duration) time.Duration {
		if d < notify.MinTimeout {
			d = notify.MinTimeout
		}
		return d + waitFunc()
	}

	reload := func() (err error) {
		log.With("file", *configFile).Infof("Loading configuration file")
		defer func() {
			if err != nil {
				log.With("file", *configFile).Errorf("Loading configuration file failed: %s", err)
				configSuccess.Set(0)
			} else {
				configSuccess.Set(1)
				configSuccessTime.Set(float64(time.Now().Unix()))
			}
		}()

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

		apiv.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))

		tmpl, err = template.FromGlobs(conf.Templates...)
		if err != nil {
			return err
		}
		tmpl.ExternalURL = amURL

		inhibitor.Stop()
		disp.Stop()

		inhibitor = inhibit.NewInhibitor(alerts, conf.InhibitRules, marker)
		pipeline = notify.BuildPipeline(
			conf.Receivers,
			tmpl,
			waitFunc,
			inhibitor,
			silences,
			notificationLog,
			marker,
		)
		disp = dispatch.NewDispatcher(alerts, dispatch.NewRoute(conf.Route, nil), pipeline, marker, timeoutFunc)

		go disp.Run()
		go inhibitor.Run()

		return nil
	}

	if err := reload(); err != nil {
		os.Exit(1)
	}

	router := route.New()

	webReload := make(chan struct{})
	ui.Register(router.WithPrefix(amURL.Path), webReload)
	apiv.Register(router.WithPrefix(path.Join(amURL.Path, "/api")))

	log.Infoln("Listening on", *listenAddress)
	go listen(*listenAddress, router)

	var (
		hup      = make(chan os.Signal)
		hupReady = make(chan bool)
		term     = make(chan os.Signal)
	)
	signal.Notify(hup, syscall.SIGHUP)
	signal.Notify(term, os.Interrupt, syscall.SIGTERM)

	go func() {
		<-hupReady
		for {
			select {
			case <-hup:
			case <-webReload:
			}
			reload()
		}
	}()

	// Wait for reload or termination signals.
	close(hupReady) // Unblock SIGHUP handler.

	<-term

	log.Infoln("Received SIGTERM, exiting gracefully...")
}

//.........这里部分代码省略.........
				n = notify.Log(n, log.With("step", "retry"))
				n = notify.Dedup(notifies, n)
				n = notify.Log(n, log.With("step", "dedup"))

				fo[i] = n
			}
			router[name] = fo
		}
		n := notify.Notifier(router)

		n = notify.Log(n, log.With("step", "route"))
		n = notify.Silence(silences, n, marker)
		n = notify.Log(n, log.With("step", "silence"))
		n = notify.Inhibit(inhibitor, n, marker)
		n = notify.Log(n, log.With("step", "inhibit"))

		return n
	}

	amURL, err := extURL(*externalURL)
	if err != nil {
		log.Fatal(err)
	}

	reload := func() (err error) {
		log.With("file", *configFile).Infof("Loading configuration file")
		defer func() {
			if err != nil {
				log.With("file", *configFile).Errorf("Loading configuration file failed: %s", err)
				configSuccess.Set(0)
			} else {
				configSuccess.Set(1)
				configSuccessTime.Set(float64(time.Now().Unix()))
			}
		}()

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

		api.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))

		tmpl, err = template.FromGlobs(conf.Templates...)
		if err != nil {
			return err
		}
		tmpl.ExternalURL = amURL

		inhibitor.Stop()
		disp.Stop()

		inhibitor = NewInhibitor(alerts, conf.InhibitRules, marker)
		disp = NewDispatcher(alerts, NewRoute(conf.Route, nil), build(conf.Receivers), marker)

		go disp.Run()
		go inhibitor.Run()

		return nil
	}

	if err := reload(); err != nil {
		os.Exit(1)
	}

	router := route.New()

	webReload := make(chan struct{})
	RegisterWeb(router.WithPrefix(amURL.Path), webReload)
	api.Register(router.WithPrefix(path.Join(amURL.Path, "/api")))

	log.Infoln("Listening on", *listenAddress)
	go listen(router)

	var (
		hup      = make(chan os.Signal)
		hupReady = make(chan bool)
		term     = make(chan os.Signal)
	)
	signal.Notify(hup, syscall.SIGHUP)
	signal.Notify(term, os.Interrupt, syscall.SIGTERM)

	go func() {
		<-hupReady
		for {
			select {
			case <-hup:
			case <-webReload:
			}
			reload()
		}
	}()

	// Wait for reload or termination signals.
	close(hupReady) // Unblock SIGHUP handler.

	<-term

	log.Infoln("Received SIGTERM, exiting gracefully...")
}

func main() {
	flag.Parse()

	printVersion()
	if *showVersion {
		os.Exit(0)
	}

	err := os.MkdirAll(*dataDir, 0777)
	if err != nil {
		log.Fatal(err)
	}
	db, err := sql.Open("sqlite3", filepath.Join(*dataDir, "am.db"))
	if err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	marker := types.NewMarker()

	alerts, err := sqlite.NewAlerts(db)
	if err != nil {
		log.Fatal(err)
	}
	notifies, err := sqlite.NewNotifies(db)
	if err != nil {
		log.Fatal(err)
	}
	silences, err := sqlite.NewSilences(db, marker)
	if err != nil {
		log.Fatal(err)
	}

	var (
		inhibitor *Inhibitor
		tmpl      *template.Template
		disp      *Dispatcher
	)
	defer disp.Stop()

	api := NewAPI(alerts, silences, func() AlertOverview {
		return disp.Groups()
	})

	build := func(rcvs []*config.Receiver) notify.Notifier {
		var (
			router  = notify.Router{}
			fanouts = notify.Build(rcvs, tmpl)
		)
		for name, fo := range fanouts {
			for i, n := range fo {
				n = notify.Retry(n)
				n = notify.Log(n, log.With("step", "retry"))
				n = notify.Dedup(notifies, n)
				n = notify.Log(n, log.With("step", "dedup"))

				fo[i] = n
			}
			router[name] = fo
		}
		n := notify.Notifier(router)

		n = notify.Log(n, log.With("step", "route"))
		n = notify.Silence(silences, n, marker)
		n = notify.Log(n, log.With("step", "silence"))
		n = notify.Inhibit(inhibitor, n, marker)
		n = notify.Log(n, log.With("step", "inhibit"))

		return n
	}

	amURL, err := extURL(*externalURL)
	if err != nil {
		log.Fatal(err)
	}

	reload := func() (err error) {
		log.With("file", *configFile).Infof("Loading configuration file")
		defer func() {
			if err != nil {
				log.With("file", *configFile).Errorf("Loading configuration file failed: %s", err)
				configSuccess.Set(0)
			} else {
				configSuccess.Set(1)
				configSuccessTime.Set(float64(time.Now().Unix()))
			}
		}()

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

		api.Update(conf.String(), time.Duration(conf.Global.ResolveTimeout))

		tmpl, err = template.FromGlobs(conf.Templates...)
		if err != nil {
			return err
		}
		tmpl.ExternalURL = amURL
//.........这里部分代码省略.........