// REST API instances that are started are killed when the tests end.
// When we eventually have a REST API Stop command this can be killed.
func startAPI(opts ...interface{}) *restAPIInstance {
	// Start a REST API to talk to
	log.SetLevel(LOG_LEVEL)
	r, _ := New(false, "", "")
	controlOpts := []control.ControlOpt{}
	for _, opt := range opts {
		switch t := opt.(type) {
		case control.ControlOpt:
			controlOpts = append(controlOpts, t)
		}
	}
	c := control.New(controlOpts...)
	c.Start()
	s := scheduler.New()
	s.SetMetricManager(c)
	s.Start()
	r.BindMetricManager(c)
	r.BindTaskManager(s)
	r.BindConfigManager(c.Config)
	err := r.Start("127.0.0.1:0")
	if err != nil {
		// Panic on an error
		panic(err)
	}
	time.Sleep(time.Millisecond * 100)
	return &restAPIInstance{
		port:   r.Port(),
		server: r,
	}
}

// REST API instances that are started are killed when the tests end.
// When we eventually have a REST API Stop command this can be killed.
func startAPI(cfg *mockConfig) *restAPIInstance {
	// Start a REST API to talk to
	log.SetLevel(LOG_LEVEL)
	r, _ := New(cfg.RestAPI)
	c := control.New(cfg.Control)
	c.Start()
	s := scheduler.New(cfg.Scheduler)
	s.SetMetricManager(c)
	s.Start()
	r.BindMetricManager(c)
	r.BindTaskManager(s)
	r.BindConfigManager(c.Config)
	go func(ch <-chan error) {
		// Block on the error channel. Will return exit status 1 for an error or just return if the channel closes.
		err, ok := <-ch
		if !ok {
			return
		}
		log.Fatal(err)
	}(r.Err())
	r.SetAddress("127.0.0.1", 0)
	r.Start()
	time.Sleep(time.Millisecond * 100)
	return &restAPIInstance{
		port:   r.Port(),
		server: r,
	}
}

// REST API instances that are started are killed when the tests end.
// When we eventually have a REST API Stop command this can be killed.
func startAPI() string {
	// Start a REST API to talk to
	rest.StreamingBufferWindow = 0.01
	log.SetLevel(LOG_LEVEL)
	r, _ := rest.New(rest.GetDefaultConfig())
	c := control.New(control.GetDefaultConfig())
	c.Start()
	s := scheduler.New(scheduler.GetDefaultConfig())
	s.SetMetricManager(c)
	s.Start()
	r.BindConfigManager(c.Config)
	r.BindMetricManager(c)
	r.BindTaskManager(s)
	go func(ch <-chan error) {
		// Block on the error channel. Will return exit status 1 for an error or just return if the channel closes.
		err, ok := <-ch
		if !ok {
			return
		}
		log.Fatal(err)
	}(r.Err())
	r.SetAddress("127.0.0.1:0")
	r.Start()
	time.Sleep(100 * time.Millisecond)
	return fmt.Sprintf("http://localhost:%d", r.Port())
}

// REST API instances that are started are killed when the tests end.
// When we eventually have a REST API Stop command this can be killed.
func startAPI(opts ...interface{}) *restAPIInstance {
	// Start a REST API to talk to
	log.SetLevel(LOG_LEVEL)
	r, _ := New(false, "", "")
	controlOpts := []control.PluginControlOpt{}
	for _, opt := range opts {
		switch t := opt.(type) {
		case control.PluginControlOpt:
			controlOpts = append(controlOpts, t)
		}
	}
	c := control.New(controlOpts...)
	c.Start()
	s := scheduler.New()
	s.SetMetricManager(c)
	s.Start()
	r.BindMetricManager(c)
	r.BindTaskManager(s)
	r.BindConfigManager(c.Config)
	go func(ch <-chan error) {
		// Block on the error channel. Will return exit status 1 for an error or just return if the channel closes.
		err, ok := <-ch
		if !ok {
			return
		}
		log.Fatal(err)
	}(r.Err())
	r.Start("127.0.0.1:0")
	time.Sleep(time.Millisecond * 100)
	return &restAPIInstance{
		port:   r.Port(),
		server: r,
	}
}

// returns an array of the mgtports and the tribe port for the last node
func startTribes(count int, seed string) ([]int, int) {
	var wg sync.WaitGroup
	var tribePort int
	var mgtPorts []int
	for i := 0; i < count; i++ {
		mgtPort := getAvailablePort()
		mgtPorts = append(mgtPorts, mgtPort)
		tribePort = getAvailablePort()
		conf := tribe.DefaultConfig(fmt.Sprintf("member-%v", mgtPort), "127.0.0.1", tribePort, seed, mgtPort)
		// conf.MemberlistConfig.PushPullInterval = 5 * time.Second
		conf.MemberlistConfig.RetransmitMult = conf.MemberlistConfig.RetransmitMult * 2
		if seed == "" {
			seed = fmt.Sprintf("%s:%d", "127.0.0.1", tribePort)
		}
		t, err := tribe.New(conf)
		if err != nil {
			panic(err)
		}

		c := control.New()
		c.RegisterEventHandler("tribe", t)
		c.Start()
		s := scheduler.New()
		s.SetMetricManager(c)
		s.RegisterEventHandler("tribe", t)
		s.Start()
		t.SetPluginCatalog(c)
		t.SetTaskManager(s)
		t.Start()
		r, _ := New(false, "", "")
		r.BindMetricManager(c)
		r.BindTaskManager(s)
		r.BindTribeManager(t)
		r.Start(":" + strconv.Itoa(mgtPort))
		wg.Add(1)
		timer := time.After(10 * time.Second)
		go func(port int) {
			defer wg.Done()
			for {
				select {
				case <-timer:
					panic("timed out")
				default:
					time.Sleep(100 * time.Millisecond)
					resp := getMembers(port)
					if resp.Meta.Code == 200 && len(resp.Body.(*rbody.TribeMemberList).Members) >= count {
						restLogger.Infof("num of members %v", len(resp.Body.(*rbody.TribeMemberList).Members))
						return
					}
				}
			}
		}(mgtPort)
	}
	wg.Wait()
	return mgtPorts, tribePort
}

// REST API instances that are started are killed when the tests end.
// When we eventually have a REST API Stop command this can be killed.
func startAPI() string {
	// Start a REST API to talk to
	rest.StreamingBufferWindow = 0.01
	log.SetLevel(LOG_LEVEL)
	r, _ := rest.New(false, "", "")
	c := control.New()
	c.Start()
	s := scheduler.New()
	s.SetMetricManager(c)
	s.Start()
	r.BindConfigManager(c.Config)
	r.BindMetricManager(c)
	r.BindTaskManager(s)
	err := r.Start("127.0.0.1:0")
	if err != nil {
		// Panic on an error
		panic(err)
	}
	time.Sleep(100 * time.Millisecond)
	return fmt.Sprintf("http://localhost:%d", r.Port())
}

func action(ctx *cli.Context) {
	// get default configuration
	cfg := getDefaultConfig()

	// read config file
	readConfig(cfg, ctx.String("config"))

	// apply values that may have been passed from the command line
	// to the configuration that we have built so far, overriding the
	// values that may have already been set (if any) for the
	// same variables in that configuration
	applyCmdLineFlags(cfg, ctx)

	// If logPath is set, we verify the logPath and set it so that all logging
	// goes to the log file instead of stdout.
	logPath := cfg.LogPath
	if logPath != "" {
		f, err := os.Stat(logPath)
		if err != nil {
			log.Fatal(err)
		}
		if !f.IsDir() {
			log.Fatal("log path provided must be a directory")
		}

		file, err := os.OpenFile(fmt.Sprintf("%s/snapd.log", logPath), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
		if err != nil {
			log.Fatal(err)
		}
		defer file.Close()
		log.SetOutput(file)
	}

	log.Info("Starting snapd (version: ", gitversion, ")")

	// Set Max Processors for snapd.
	setMaxProcs(cfg.GoMaxProcs)

	// Validate log level and trust level settings for snapd
	validateLevelSettings(cfg.LogLevel, cfg.Control.PluginTrust)

	c := control.New(cfg.Control)

	coreModules = []coreModule{}

	coreModules = append(coreModules, c)
	s := scheduler.New(cfg.Scheduler)
	s.SetMetricManager(c)
	coreModules = append(coreModules, s)

	// Auth requested and not provided as part of config
	if cfg.RestAPI.Enable && cfg.RestAPI.RestAuth && cfg.RestAPI.RestAuthPassword == "" {
		fmt.Println("What password do you want to use for authentication?")
		fmt.Print("Password:")
		password, err := terminal.ReadPassword(0)
		fmt.Println()
		if err != nil {
			log.Fatal("Failed to get credentials")
		}
		cfg.RestAPI.RestAuthPassword = string(password)
	}

	var tr managesTribe
	if cfg.Tribe.Enable {
		cfg.Tribe.RestAPIPort = cfg.RestAPI.Port
		if cfg.RestAPI.RestAuth {
			cfg.Tribe.RestAPIPassword = cfg.RestAPI.RestAuthPassword
		}
		log.Info("Tribe is enabled")
		t, err := tribe.New(cfg.Tribe)
		if err != nil {
			printErrorAndExit(t.Name(), err)
		}
		c.RegisterEventHandler("tribe", t)
		t.SetPluginCatalog(c)
		s.RegisterEventHandler("tribe", t)
		t.SetTaskManager(s)
		coreModules = append(coreModules, t)
		tr = t
	}

	//Setup RESTful API if it was enabled in the configuration
	if cfg.RestAPI.Enable {
		r, err := rest.New(cfg.RestAPI)
		if err != nil {
			log.Fatal(err)
		}
		r.BindMetricManager(c)
		r.BindConfigManager(c.Config)
		r.BindTaskManager(s)

		//Rest Authentication
		if cfg.RestAPI.RestAuth {
			log.Info("REST API authentication is enabled")
			r.SetAPIAuth(cfg.RestAPI.RestAuth)
			log.Info("REST API authentication password is set")
			r.SetAPIAuthPwd(cfg.RestAPI.RestAuthPassword)
			if !cfg.RestAPI.HTTPS {
				log.Warning("Using REST API authentication without HTTPS enabled.")
			}
//.........这里部分代码省略.........

func startTribes(count int) []int {
	seed := ""
	var wg sync.WaitGroup
	var mgtPorts []int
	for i := 0; i < count; i++ {
		mgtPort := getPort()
		mgtPorts = append(mgtPorts, mgtPort)
		tribePort := getPort()
		conf := tribe.GetDefaultConfig()
		conf.Name = fmt.Sprintf("member-%v", mgtPort)
		conf.BindAddr = "127.0.0.1"
		conf.BindPort = tribePort
		conf.Seed = seed
		conf.RestAPIPort = mgtPort
		conf.MemberlistConfig.PushPullInterval = 5 * time.Second
		conf.MemberlistConfig.RetransmitMult = conf.MemberlistConfig.RetransmitMult * 2
		if seed == "" {
			seed = fmt.Sprintf("%s:%d", "127.0.0.1", tribePort)
		}
		t, err := tribe.New(conf)
		if err != nil {
			panic(err)
		}

		c := control.New(control.GetDefaultConfig())
		c.RegisterEventHandler("tribe", t)
		c.Start()
		s := scheduler.New(scheduler.GetDefaultConfig())
		s.SetMetricManager(c)
		s.RegisterEventHandler("tribe", t)
		s.Start()
		t.SetPluginCatalog(c)
		t.SetTaskManager(s)
		t.Start()
		r, _ := rest.New(rest.GetDefaultConfig())
		r.BindMetricManager(c)
		r.BindTaskManager(s)
		r.BindTribeManager(t)
		r.SetAddress("", mgtPort)
		r.Start()
		wg.Add(1)
		timer := time.After(10 * time.Second)
		go func(port int) {
			defer wg.Done()
			for {
				select {
				case <-timer:
					panic("timed out")
				default:
					time.Sleep(100 * time.Millisecond)

					resp := getMembers(port)
					if resp.Meta.Code == 200 && len(resp.Body.(*rbody.TribeMemberList).Members) == count {
						log.Infof("num of members %v", len(resp.Body.(*rbody.TribeMemberList).Members))
						return
					}
				}
			}
		}(mgtPort)
	}
	wg.Wait()
	uris := make([]int, len(mgtPorts))
	for idx, port := range mgtPorts {
		uris[idx] = port
	}
	return uris
}

func action(ctx *cli.Context) error {
	// get default configuration
	cfg := getDefaultConfig()

	// read config file
	readConfig(cfg, ctx.String("config"))

	// apply values that may have been passed from the command line
	// to the configuration that we have built so far, overriding the
	// values that may have already been set (if any) for the
	// same variables in that configuration
	applyCmdLineFlags(cfg, ctx)

	// test the resulting configuration to ensure the values it contains still pass the
	// constraints after applying the environment variables and command-line parameters;
	// if errors are found, report them and exit with a fatal error
	jb, _ := json.Marshal(cfg)
	serrs := cfgfile.ValidateSchema(CONFIG_CONSTRAINTS, string(jb))
	if serrs != nil {
		for _, serr := range serrs {
			log.WithFields(serr.Fields()).Error(serr.Error())
		}
		log.Fatal("Errors found after applying command-line flags")
	}

	// If logPath is set, we verify the logPath and set it so that all logging
	// goes to the log file instead of stdout.
	logPath := cfg.LogPath
	if logPath != "" {
		f, err := os.Stat(logPath)
		if err != nil {
			log.Fatal(err)
		}
		if !f.IsDir() {
			log.Fatal("log path provided must be a directory")
		}
		aMode := os.O_APPEND
		if cfg.LogTruncate {
			aMode = os.O_TRUNC
		}
		file, err := os.OpenFile(fmt.Sprintf("%s/snapd.log", logPath), os.O_RDWR|os.O_CREATE|aMode, 0666)
		if err != nil {
			log.Fatal(err)
		}
		defer file.Close()
		log.SetOutput(file)
	}
	// Because even though github.com/Sirupsen/logrus states that
	// 'Logs the event in colors if stdout is a tty, otherwise without colors'
	// Seems like this does not work
	// Please note however that the default output format without colors is somewhat different (timestamps, ...)
	//
	// We could also restrict this command line parameter to only apply when no logpath is given
	// and forcing the coloring to off when using a file but this might not please users who like to use
	// redirect mechanisms like # snapd -t 0 -l 1 2>&1 | tee my.log
	if !cfg.LogColors {
		log.SetFormatter(&log.TextFormatter{DisableColors: true})
	}

	// Validate log level and trust level settings for snapd
	validateLevelSettings(cfg.LogLevel, cfg.Control.PluginTrust)

	// Switch log level to user defined
	log.SetLevel(getLevel(cfg.LogLevel))
	log.Info("setting log level to: ", l[cfg.LogLevel])

	log.Info("Starting snapd (version: ", gitversion, ")")

	// Set Max Processors for snapd.
	setMaxProcs(cfg.GoMaxProcs)

	c := control.New(cfg.Control)

	coreModules = []coreModule{}

	coreModules = append(coreModules, c)
	s := scheduler.New(cfg.Scheduler)
	s.SetMetricManager(c)
	coreModules = append(coreModules, s)

	// Auth requested and not provided as part of config
	if cfg.RestAPI.Enable && cfg.RestAPI.RestAuth && cfg.RestAPI.RestAuthPassword == "" {
		fmt.Println("What password do you want to use for authentication?")
		fmt.Print("Password:")
		password, err := terminal.ReadPassword(0)
		fmt.Println()
		if err != nil {
			log.Fatal("Failed to get credentials")
		}
		cfg.RestAPI.RestAuthPassword = string(password)
	}

	var tr managesTribe
	if cfg.Tribe.Enable {
		cfg.Tribe.RestAPIPort = cfg.RestAPI.Port
		if cfg.RestAPI.RestAuth {
			cfg.Tribe.RestAPIPassword = cfg.RestAPI.RestAuthPassword
		}
		log.Info("Tribe is enabled")
		t, err := tribe.New(cfg.Tribe)
//.........这里部分代码省略.........

func action(ctx *cli.Context) {
	// If logPath is set, we verify the logPath and set it so that all logging
	// goes to the log file instead of stdout.
	logPath := ctx.String("log-path")
	if logPath != "" {
		f, err := os.Stat(logPath)
		if err != nil {
			log.Fatal(err)
		}
		if !f.IsDir() {
			log.Fatal("log path provided must be a directory")
		}

		file, err := os.OpenFile(fmt.Sprintf("%s/snap.log", logPath), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
		if err != nil {
			log.Fatal(err)
		}
		defer file.Close()
		log.SetOutput(file)
	}

	var l = map[int]string{
		1: "debug",
		2: "info",
		3: "warning",
		4: "error",
		5: "fatal",
	}

	var t = map[int]string{
		0: "disabled",
		1: "enabled",
		2: "warning",
	}

	logLevel := ctx.Int("log-level")
	maxProcs := ctx.Int("max-procs")
	disableAPI := ctx.Bool("disable-api")
	apiPort := ctx.Int("api-port")
	autodiscoverPath := ctx.String("auto-discover")
	maxRunning := ctx.Int("max-running-plugins")
	pluginTrust := ctx.Int("plugin-trust")
	keyringPaths := ctx.String("keyring-files")
	cachestr := ctx.String("cache-expiration")
	isTribeEnabled := ctx.Bool("tribe")
	tribeSeed := ctx.String("tribe-seed")
	tribeNodeName := ctx.String("tribe-node-name")
	tribeAddr := ctx.String("tribe-addr")
	tribePort := ctx.Int("tribe-port")
	cache, err := time.ParseDuration(cachestr)
	if err != nil {
		log.Fatal(fmt.Sprintf("invalid cache-expiration format: %s", cachestr))
	}
	config := ctx.String("config")
	restHttps := ctx.Bool("rest-https")
	restKey := ctx.String("rest-key")
	restCert := ctx.String("rest-cert")

	log.Info("Starting snapd (version: ", gitversion, ")")

	// Set Max Processors for snapd.
	setMaxProcs(maxProcs)

	// Validate log level and trust level settings for snapd
	validateLevelSettings(logLevel, pluginTrust)

	controlOpts := []control.PluginControlOpt{
		control.MaxRunningPlugins(maxRunning),
		control.CacheExpiration(cache),
	}

	if config != "" {
		b, err := ioutil.ReadFile(config)
		if err != nil {
			log.WithFields(log.Fields{
				"block":   "main",
				"_module": "snapd",
				"error":   err.Error(),
				"path":    config,
			}).Fatal("unable to read config")
		}
		cfg := control.NewConfig()
		err = json.Unmarshal(b, &cfg)
		if err != nil {
			log.WithFields(log.Fields{
				"block":   "main",
				"_module": "snapd",
				"error":   err.Error(),
				"path":    config,
			}).Fatal("invalid config")
		}
		controlOpts = append(controlOpts, control.OptSetConfig(cfg))
	}

	c := control.New(
		controlOpts...,
	)

	coreModules = []coreModule{}

//.........这里部分代码省略.........

// returns an array of the mgtports and the tribe port for the last node
func startTribes(count int, seed string) ([]int, int, *listenToSeedEvents) {
	var wg sync.WaitGroup
	var tribePort int
	var mgtPorts []int
	lpe := newListenToSeedEvents()
	for i := 0; i < count; i++ {
		mgtPort := getAvailablePort()
		mgtPorts = append(mgtPorts, mgtPort)
		tribePort = getAvailablePort()
		conf := tribe.GetDefaultConfig()
		conf.Name = fmt.Sprintf("member-%v", mgtPort)
		conf.BindAddr = "127.0.0.1"
		conf.BindPort = tribePort
		conf.Seed = seed
		conf.RestAPIPort = mgtPort
		//conf.MemberlistConfig.PushPullInterval = 5 * time.Second
		conf.MemberlistConfig.RetransmitMult = conf.MemberlistConfig.RetransmitMult * 2

		t, err := tribe.New(conf)
		if err != nil {
			panic(err)
		}

		if seed == "" {
			seed = fmt.Sprintf("%s:%d", "127.0.0.1", tribePort)
			t.EventManager.RegisterHandler("tribe.tests", lpe)
		}

		cfg := control.GetDefaultConfig()
		// get an available port to avoid conflicts (we aren't testing remote workflows here)
		cfg.ListenPort = getAvailablePort()
		c := control.New(cfg)
		c.RegisterEventHandler("tribe", t)
		c.Start()
		s := scheduler.New(scheduler.GetDefaultConfig())
		s.SetMetricManager(c)
		s.RegisterEventHandler("tribe", t)
		s.Start()
		t.SetPluginCatalog(c)
		t.SetTaskManager(s)
		t.Start()
		r, _ := New(GetDefaultConfig())
		r.BindMetricManager(c)
		r.BindTaskManager(s)
		r.BindTribeManager(t)
		r.SetAddress(fmt.Sprintf("127.0.0.1:%d", mgtPort))
		r.Start()
		wg.Add(1)
		timer := time.After(10 * time.Second)
		go func(port int) {
			defer wg.Done()
			for {
				select {
				case <-timer:
					panic("timed out")
				default:
					time.Sleep(100 * time.Millisecond)
					resp := getMembers(port)
					if resp.Meta.Code == 200 && len(resp.Body.(*rbody.TribeMemberList).Members) >= count {
						restLogger.Infof("num of members %v", len(resp.Body.(*rbody.TribeMemberList).Members))
						return
					}
				}
			}
		}(mgtPort)
	}
	wg.Wait()
	return mgtPorts, tribePort, lpe
}