// Try all possible ways to find clusters to join
// Include -discovery, -peers and log data in -data-dir
//
// Peer discovery follows this order:
// 1. -discovery
// 2. -peers
// 3. previous peers in -data-dir
func (s *PeerServer) findCluster(discoverURL string, peers []string) {
	// Attempt cluster discovery
	toDiscover := discoverURL != ""
	if toDiscover {
		discoverPeers, discoverErr := s.handleDiscovery(discoverURL)
		// It is registered in discover url
		if discoverErr == nil {
			// start as a leader in a new cluster
			if len(discoverPeers) == 0 {
				log.Debug("This peer is starting a brand new cluster based on discover URL.")
				s.startAsLeader()
			} else {
				s.startAsFollower(discoverPeers)
			}
			return
		}
	}

	hasPeerList := len(peers) > 0
	// if there is log in data dir, append previous peers to peers in config
	// to find cluster
	prevPeers := s.registry.PeerURLs(s.raftServer.Leader(), s.Config.Name)
	for i := 0; i < len(prevPeers); i++ {
		u, err := url.Parse(prevPeers[i])
		if err != nil {
			log.Debug("rejoin cannot parse url: ", err)
		}
		prevPeers[i] = u.Host
	}
	peers = append(peers, prevPeers...)

	// if there is backup peer lists, use it to find cluster
	if len(peers) > 0 {
		ok := s.joinCluster(peers)
		if !ok {
			log.Warn("No living peers are found!")
		} else {
			log.Debugf("%s restart as a follower based on peers[%v]", s.Config.Name)
			return
		}
	}

	if !s.raftServer.IsLogEmpty() {
		log.Debug("Entire cluster is down! %v will restart the cluster.", s.Config.Name)
		return
	}

	if toDiscover {
		log.Fatalf("Discovery failed, no available peers in backup list, and no log data")
	}

	if hasPeerList {
		log.Fatalf("No available peers in backup list, and no log data")
	}

	log.Infof("This peer is starting a brand new cluster now.")
	s.startAsLeader()
}

func (c *Config) handleDiscovery() error {
	p, err := discovery.Do(c.Discovery, c.Name, c.Peer.Addr)

	// This is fatal, discovery encountered an unexpected error
	// and we have no peer list.
	if err != nil && len(c.Peers) == 0 {
		log.Fatalf("Discovery failed and a backup peer list wasn't provided: %v", err)
		return err
	}

	// Warn about errors coming from discovery, this isn't fatal
	// since the user might have provided a peer list elsewhere.
	if err != nil {
		log.Warnf("Discovery encountered an error but a backup peer list (%v) was provided: %v", c.Peers, err)
	}

	for i := range p {
		// Strip the scheme off of the peer if it has one
		// TODO(bp): clean this up!
		purl, err := url.Parse(p[i])
		if err == nil {
			p[i] = purl.Host
		}
	}

	c.Peers = p

	return nil
}

func (s *PeerServer) startAsFollower(cluster []string) {
	// start as a follower in a existing cluster
	for i := 0; i < s.Config.RetryTimes; i++ {
		ok := s.joinCluster(cluster)
		if ok {
			return
		}
		log.Warnf("Unable to join the cluster using any of the peers %v. Retrying in %.1f seconds", cluster, s.Config.RetryInterval)
		time.Sleep(time.Second * time.Duration(s.Config.RetryInterval))
	}

	log.Fatalf("Cannot join the cluster via given peers after %x retries", s.Config.RetryTimes)
}

func (s *PeerServer) startAsFollower(cluster []string) {
	// start as a follower in a existing cluster
	for i := 0; i < s.RetryTimes; i++ {
		ok := s.joinCluster(cluster)
		if ok {
			return
		}
		log.Warnf("cannot join to cluster via given peers, retry in %d seconds", RetryInterval)
		time.Sleep(time.Second * RetryInterval)
	}

	log.Fatalf("Cannot join the cluster via given peers after %x retries", s.RetryTimes)
}

// removeSelfFromList removes url of the peerServer from the peer list
func (s *PeerServer) removeSelfFromList(peers []string) []string {
	// Remove its own peer address from the peer list to join
	u, err := url.Parse(s.Config.URL)
	if err != nil {
		log.Fatalf("removeSelfFromList cannot parse peer address %v", s.Config.URL)
	}
	newPeers := make([]string, 0)
	for _, v := range peers {
		if v != u.Host {
			newPeers = append(newPeers, v)
		}
	}
	return newPeers
}

func main() {
	// Load configuration.
	var config = config.New()
	if err := config.Load(os.Args[1:]); err != nil {
		fmt.Println(server.Usage() + "\n")
		fmt.Println(err.Error() + "\n")
		os.Exit(1)
	} else if config.ShowVersion {
		fmt.Println("etcd version", server.ReleaseVersion)
		os.Exit(0)
	} else if config.ShowHelp {
		fmt.Println(server.Usage() + "\n")
		os.Exit(0)
	}

	// Enable options.
	if config.VeryVeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Trace)
	} else if config.VeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Debug)
	} else if config.Verbose {
		log.Verbose = true
	}
	if config.CPUProfileFile != "" {
		profile(config.CPUProfileFile)
	}

	if config.DataDir == "" {
		log.Fatal("The data dir was not set and could not be guessed from machine name")
	}

	// Create data directory if it doesn't already exist.
	if err := os.MkdirAll(config.DataDir, 0744); err != nil {
		log.Fatalf("Unable to create path: %s", err)
	}

	// Warn people if they have an info file
	info := filepath.Join(config.DataDir, "info")
	if _, err := os.Stat(info); err == nil {
		log.Warnf("All cached configuration is now ignored. The file %s can be removed.", info)
	}

	var mbName string
	if config.Trace() {
		mbName = config.MetricsBucketName()
		runtime.SetBlockProfileRate(1)
	}

	mb := metrics.NewBucket(mbName)

	if config.GraphiteHost != "" {
		err := mb.Publish(config.GraphiteHost)
		if err != nil {
			panic(err)
		}
	}

	// Retrieve CORS configuration
	corsInfo, err := ehttp.NewCORSInfo(config.CorsOrigins)
	if err != nil {
		log.Fatal("CORS:", err)
	}

	// Create etcd key-value store and registry.
	store := store.New()
	registry := server.NewRegistry(store)

	// Create stats objects
	followersStats := server.NewRaftFollowersStats(config.Name)
	serverStats := server.NewRaftServerStats(config.Name)

	// Calculate all of our timeouts
	heartbeatInterval := time.Duration(config.Peer.HeartbeatInterval) * time.Millisecond
	electionTimeout := time.Duration(config.Peer.ElectionTimeout) * time.Millisecond
	dialTimeout := (3 * heartbeatInterval) + electionTimeout
	responseHeaderTimeout := (3 * heartbeatInterval) + electionTimeout

	// Create peer server
	psConfig := server.PeerServerConfig{
		Name:           config.Name,
		Scheme:         config.PeerTLSInfo().Scheme(),
		URL:            config.Peer.Addr,
		SnapshotCount:  config.SnapshotCount,
		MaxClusterSize: config.MaxClusterSize,
		RetryTimes:     config.MaxRetryAttempts,
		RetryInterval:  config.RetryInterval,
	}
	ps := server.NewPeerServer(psConfig, registry, store, &mb, followersStats, serverStats)

	var psListener net.Listener
	if psConfig.Scheme == "https" {
		peerServerTLSConfig, err := config.PeerTLSInfo().ServerConfig()
		if err != nil {
			log.Fatal("peer server TLS error: ", err)
		}

		psListener, err = server.NewTLSListener(config.Peer.BindAddr, peerServerTLSConfig)
		if err != nil {
//.........这里部分代码省略.........

func main() {
	// Load configuration.
	var config = server.NewConfig()
	if err := config.Load(os.Args[1:]); err != nil {
		fmt.Println(server.Usage() + "\n")
		fmt.Println(err.Error() + "\n")
		os.Exit(1)
	} else if config.ShowVersion {
		fmt.Println(server.ReleaseVersion)
		os.Exit(0)
	} else if config.ShowHelp {
		fmt.Println(server.Usage() + "\n")
		os.Exit(0)
	}

	// Enable options.
	if config.VeryVeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Trace)
	} else if config.VeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Debug)
	} else if config.Verbose {
		log.Verbose = true
	}
	if config.CPUProfileFile != "" {
		profile(config.CPUProfileFile)
	}

	if config.DataDir == "" {
		log.Fatal("The data dir was not set and could not be guessed from machine name")
	}

	// Create data directory if it doesn't already exist.
	if err := os.MkdirAll(config.DataDir, 0744); err != nil {
		log.Fatalf("Unable to create path: %s", err)
	}

	// Load info object.
	info, err := config.Info()
	if err != nil {
		log.Fatal("info:", err)
	}

	// Retrieve TLS configuration.
	tlsConfig, err := info.EtcdTLS.Config()
	if err != nil {
		log.Fatal("Client TLS:", err)
	}
	peerTLSConfig, err := info.RaftTLS.Config()
	if err != nil {
		log.Fatal("Peer TLS:", err)
	}

	var mbName string
	if config.Trace() {
		mbName = config.MetricsBucketName()
		runtime.SetBlockProfileRate(1)
	}

	mb := metrics.NewBucket(mbName)

	if config.GraphiteHost != "" {
		err := mb.Publish(config.GraphiteHost)
		if err != nil {
			panic(err)
		}
	}

	// Create etcd key-value store and registry.
	store := store.New()
	registry := server.NewRegistry(store)

	// Create peer server.
	heartbeatTimeout := time.Duration(config.Peer.HeartbeatTimeout) * time.Millisecond
	electionTimeout := time.Duration(config.Peer.ElectionTimeout) * time.Millisecond
	ps := server.NewPeerServer(info.Name, config.DataDir, info.RaftURL, info.RaftListenHost, &peerTLSConfig, &info.RaftTLS, registry, store, config.SnapshotCount, heartbeatTimeout, electionTimeout, &mb)
	ps.MaxClusterSize = config.MaxClusterSize
	ps.RetryTimes = config.MaxRetryAttempts

	// Create client server.
	s := server.New(info.Name, info.EtcdURL, info.EtcdListenHost, &tlsConfig, &info.EtcdTLS, ps, registry, store, &mb)
	if err := s.AllowOrigins(config.CorsOrigins); err != nil {
		panic(err)
	}

	if config.Trace() {
		s.EnableTracing()
	}

	ps.SetServer(s)

	// Run peer server in separate thread while the client server blocks.
	go func() {
		log.Fatal(ps.ListenAndServe(config.Snapshot, config.Peers))
	}()
	log.Fatal(s.ListenAndServe())
}

func main() {
	// Load configuration.
	var config = server.NewConfig()
	if err := config.Load(os.Args[1:]); err != nil {
		fmt.Println(server.Usage() + "\n")
		fmt.Println(err.Error() + "\n")
		os.Exit(1)
	} else if config.ShowVersion {
		fmt.Println(server.ReleaseVersion)
		os.Exit(0)
	} else if config.ShowHelp {
		fmt.Println(server.Usage() + "\n")
		os.Exit(0)
	}

	// Enable options.
	if config.VeryVeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Trace)
	} else if config.VeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Debug)
	} else if config.Verbose {
		log.Verbose = true
	}
	if config.CPUProfileFile != "" {
		profile(config.CPUProfileFile)
	}

	if config.DataDir == "" {
		log.Fatal("The data dir was not set and could not be guessed from machine name")
	}

	// Create data directory if it doesn't already exist.
	if err := os.MkdirAll(config.DataDir, 0744); err != nil {
		log.Fatalf("Unable to create path: %s", err)
	}

	// Load info object.
	info, err := config.Info()
	if err != nil {
		log.Fatal("info:", err)
	}

	// Retrieve TLS configuration.
	tlsConfig, err := info.EtcdTLS.Config()
	if err != nil {
		log.Fatal("Client TLS:", err)
	}
	peerTLSConfig, err := info.RaftTLS.Config()
	if err != nil {
		log.Fatal("Peer TLS:", err)
	}

	var mbName string
	if config.Trace() {
		mbName = config.MetricsBucketName()
		runtime.SetBlockProfileRate(1)
	}

	mb := metrics.NewBucket(mbName)

	if config.GraphiteHost != "" {
		err := mb.Publish(config.GraphiteHost)
		if err != nil {
			panic(err)
		}
	}

	// Retrieve CORS configuration
	corsInfo, err := ehttp.NewCORSInfo(config.CorsOrigins)
	if err != nil {
		log.Fatal("CORS:", err)
	}

	// Create etcd key-value store and registry.
	store := store.New()
	registry := server.NewRegistry(store)

	// Create stats objects
	followersStats := server.NewRaftFollowersStats(info.Name)
	serverStats := server.NewRaftServerStats(info.Name)

	// Calculate all of our timeouts
	heartbeatTimeout := time.Duration(config.Peer.HeartbeatTimeout) * time.Millisecond
	electionTimeout := time.Duration(config.Peer.ElectionTimeout) * time.Millisecond
	dialTimeout := (3 * heartbeatTimeout) + electionTimeout
	responseHeaderTimeout := (3 * heartbeatTimeout) + electionTimeout

	// Create peer server.
	psConfig := server.PeerServerConfig{
		Name:           info.Name,
		Scheme:         peerTLSConfig.Scheme,
		URL:            info.RaftURL,
		SnapshotCount:  config.SnapshotCount,
		MaxClusterSize: config.MaxClusterSize,
		RetryTimes:     config.MaxRetryAttempts,
	}
	ps := server.NewPeerServer(psConfig, registry, store, &mb, followersStats, serverStats)

//.........这里部分代码省略.........

func main() {
	parseFlags()

	// Load configuration.
	var config = server.NewConfig()
	if err := config.Load(os.Args[1:]); err != nil {
		log.Fatal("Configuration error:", err)
	}

	// Turn on logging.
	if config.VeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Debug)
	} else if config.Verbose {
		log.Verbose = true
	}

	// Setup a default directory based on the machine name
	if config.DataDir == "" {
		config.DataDir = config.Name + ".etcd"
		log.Warnf("Using the directory %s as the etcd configuration directory because a directory was not specified. ", config.DataDir)
	}

	// Create data directory if it doesn't already exist.
	if err := os.MkdirAll(config.DataDir, 0744); err != nil {
		log.Fatalf("Unable to create path: %s", err)
	}

	// Load info object.
	info, err := config.Info()
	if err != nil {
		log.Fatal("info:", err)
	}
	if info.Name == "" {
		host, err := os.Hostname()
		if err != nil || host == "" {
			log.Fatal("Machine name required and hostname not set. e.g. '-n=machine_name'")
		}
		log.Warnf("Using hostname %s as the machine name. You must ensure this name is unique among etcd machines.", host)
		info.Name = host
	}

	// Retrieve TLS configuration.
	tlsConfig, err := info.EtcdTLS.Config()
	if err != nil {
		log.Fatal("Client TLS:", err)
	}
	peerTLSConfig, err := info.RaftTLS.Config()
	if err != nil {
		log.Fatal("Peer TLS:", err)
	}

	// Create etcd key-value store and registry.
	store := store.New()
	registry := server.NewRegistry(store)

	// Create peer server.
	ps := server.NewPeerServer(info.Name, config.DataDir, info.RaftURL, info.RaftListenHost, &peerTLSConfig, &info.RaftTLS, registry, store, config.SnapCount)
	ps.MaxClusterSize = config.MaxClusterSize
	ps.RetryTimes = config.MaxRetryAttempts

	// Create client server.
	s := server.New(info.Name, info.EtcdURL, info.EtcdListenHost, &tlsConfig, &info.EtcdTLS, ps, registry, store)
	if err := s.AllowOrigins(config.Cors); err != nil {
		panic(err)
	}

	ps.SetServer(s)

	// Run peer server in separate thread while the client server blocks.
	go func() {
		log.Fatal(ps.ListenAndServe(config.Snapshot, config.Machines))
	}()
	log.Fatal(s.ListenAndServe())
}

// Try all possible ways to find clusters to join
// Include log data in -data-dir, -discovery and -peers
//
// Peer discovery follows this order:
// 1. previous peers in -data-dir
// 2. -discovery
// 3. -peers
//
// TODO(yichengq): RaftServer should be started as late as possible.
// Current implementation to start it is not that good,
// and should be refactored later.
func (s *PeerServer) findCluster(discoverURL string, peers []string) {
	name := s.Config.Name
	isNewNode := s.raftServer.IsLogEmpty()

	// Try its best to find possible peers, and connect with them.
	if !isNewNode {
		// It is not allowed to join the cluster with existing peer address
		// This prevents old node joining with different name by mistake.
		if !s.checkPeerAddressNonconflict() {
			log.Fatalf("%v is not allowed to join the cluster with existing URL %v", s.Config.Name, s.Config.URL)
		}

		// Take old nodes into account.
		allPeers := s.getKnownPeers()
		// Discover registered peers.
		// TODO(yichengq): It may mess up discoverURL if this is
		// set wrong by mistake. This may need to refactor discovery
		// module. Fix it later.
		if discoverURL != "" {
			discoverPeers, _ := s.handleDiscovery(discoverURL)
			allPeers = append(allPeers, discoverPeers...)
		}
		allPeers = append(allPeers, peers...)
		allPeers = s.removeSelfFromList(allPeers)

		// If there is possible peer list, use it to find cluster.
		if len(allPeers) > 0 {
			// TODO(yichengq): joinCluster may fail if there's no leader for
			// current cluster. It should wait if the cluster is under
			// leader election, or the node with changed IP cannot join
			// the cluster then.
			if err := s.startAsFollower(allPeers, 1); err == nil {
				log.Debugf("%s joins to the previous cluster %v", name, allPeers)
				return
			}

			log.Warnf("%s cannot connect to previous cluster %v", name, allPeers)
		}

		// TODO(yichengq): Think about the action that should be done
		// if it cannot connect any of the previous known node.
		s.raftServer.Start()
		log.Debugf("%s is restarting the cluster %v", name, allPeers)
		return
	}

	// Attempt cluster discovery
	if discoverURL != "" {
		discoverPeers, discoverErr := s.handleDiscovery(discoverURL)
		// It is registered in discover url
		if discoverErr == nil {
			// start as a leader in a new cluster
			if len(discoverPeers) == 0 {
				log.Debugf("%s is starting a new cluster via discover service", name)
				s.startAsLeader()
			} else {
				log.Debugf("%s is joining a cluster %v via discover service", name, discoverPeers)
				if err := s.startAsFollower(discoverPeers, s.Config.RetryTimes); err != nil {
					log.Fatal(err)
				}
			}
			return
		}
		log.Warnf("%s failed to connect discovery service[%v]: %v", name, discoverURL, discoverErr)

		if len(peers) == 0 {
			log.Fatalf("%s, the new leader, must register itself to discovery service as required", name)
		}
	}

	if len(peers) > 0 {
		if err := s.startAsFollower(peers, s.Config.RetryTimes); err != nil {
			log.Fatalf("%s cannot connect to existing cluster %v", name, peers)
		}
		return
	}

	log.Infof("%s is starting a new cluster.", s.Config.Name)
	s.startAsLeader()
	return
}

// Run the etcd instance.
func (e *Etcd) Run() {
	// Sanitize all the input fields.
	if err := e.Config.Sanitize(); err != nil {
		log.Fatalf("failed sanitizing configuration: %v", err)
	}

	// Force remove server configuration if specified.
	if e.Config.Force {
		e.Config.Reset()
	}

	// Enable options.
	if e.Config.VeryVeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Trace)
		goetcd.SetLogger(
			golog.New(
				"go-etcd",
				false,
				golog.CombinedSink(
					os.Stdout,
					"[%s] %s %-9s | %s\n",
					[]string{"prefix", "time", "priority", "message"},
				),
			),
		)
	} else if e.Config.VeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Debug)
	} else if e.Config.Verbose {
		log.Verbose = true
	}

	if e.Config.CPUProfileFile != "" {
		profile(e.Config.CPUProfileFile)
	}

	if e.Config.DataDir == "" {
		log.Fatal("The data dir was not set and could not be guessed from machine name")
	}

	// Create data directory if it doesn't already exist.
	if err := os.MkdirAll(e.Config.DataDir, 0744); err != nil {
		log.Fatalf("Unable to create path: %s", err)
	}

	// Warn people if they have an info file
	info := filepath.Join(e.Config.DataDir, "info")
	if _, err := os.Stat(info); err == nil {
		log.Warnf("All cached configuration is now ignored. The file %s can be removed.", info)
	}

	var mbName string
	if e.Config.Trace() {
		mbName = e.Config.MetricsBucketName()
		runtime.SetBlockProfileRate(1)
	}

	mb := metrics.NewBucket(mbName)

	if e.Config.GraphiteHost != "" {
		err := mb.Publish(e.Config.GraphiteHost)
		if err != nil {
			panic(err)
		}
	}

	// Retrieve CORS configuration
	corsInfo, err := ehttp.NewCORSInfo(e.Config.CorsOrigins)
	if err != nil {
		log.Fatal("CORS:", err)
	}

	// Create etcd key-value store and registry.
	e.Store = store.New()
	e.Registry = server.NewRegistry(e.Store)

	// Create stats objects
	followersStats := server.NewRaftFollowersStats(e.Config.Name)
	serverStats := server.NewRaftServerStats(e.Config.Name)

	// Calculate all of our timeouts
	heartbeatInterval := time.Duration(e.Config.Peer.HeartbeatInterval) * time.Millisecond
	electionTimeout := time.Duration(e.Config.Peer.ElectionTimeout) * time.Millisecond
	dialTimeout := (3 * heartbeatInterval) + electionTimeout
	responseHeaderTimeout := (3 * heartbeatInterval) + electionTimeout

	clientTransporter := &httpclient.Transport{
		ResponseHeaderTimeout: responseHeaderTimeout + extraTimeout,
		// This is a workaround for Transport.CancelRequest doesn't work on
		// HTTPS connections blocked. The patch for it is in progress,
		// and would be available in Go1.3
		// More: https://codereview.appspot.com/69280043/
		ConnectTimeout: dialTimeout + extraTimeout,
		RequestTimeout: responseHeaderTimeout + dialTimeout + 2*extraTimeout,
	}
	if e.Config.PeerTLSInfo().Scheme() == "https" {
		clientTLSConfig, err := e.Config.PeerTLSInfo().ClientConfig()
		if err != nil {
//.........这里部分代码省略.........

// Run the etcd instance.
func (e *Etcd) Run() {
	// Enable options.
	if e.Config.VeryVeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Trace)
		goetcd.SetLogger(
			golog.New(
				"go-etcd",
				false,
				golog.CombinedSink(
					os.Stdout,
					"[%s] %s %-9s | %s\n",
					[]string{"prefix", "time", "priority", "message"},
				),
			),
		)
	} else if e.Config.VeryVerbose {
		log.Verbose = true
		raft.SetLogLevel(raft.Debug)
	} else if e.Config.Verbose {
		log.Verbose = true
	}

	if e.Config.CPUProfileFile != "" {
		profile(e.Config.CPUProfileFile)
	}

	if e.Config.DataDir == "" {
		log.Fatal("The data dir was not set and could not be guessed from machine name")
	}

	// Create data directory if it doesn't already exist.
	if err := os.MkdirAll(e.Config.DataDir, 0744); err != nil {
		log.Fatalf("Unable to create path: %s", err)
	}

	// Warn people if they have an info file
	info := filepath.Join(e.Config.DataDir, "info")
	if _, err := os.Stat(info); err == nil {
		log.Warnf("All cached configuration is now ignored. The file %s can be removed.", info)
	}

	var mbName string
	if e.Config.Trace() {
		mbName = e.Config.MetricsBucketName()
		runtime.SetBlockProfileRate(1)
	}

	mb := metrics.NewBucket(mbName)

	if e.Config.GraphiteHost != "" {
		err := mb.Publish(e.Config.GraphiteHost)
		if err != nil {
			panic(err)
		}
	}

	// Retrieve CORS configuration
	corsInfo, err := ehttp.NewCORSInfo(e.Config.CorsOrigins)
	if err != nil {
		log.Fatal("CORS:", err)
	}

	// Create etcd key-value store and registry.
	e.Store = store.New()
	e.Registry = server.NewRegistry(e.Store)

	// Create stats objects
	followersStats := server.NewRaftFollowersStats(e.Config.Name)
	serverStats := server.NewRaftServerStats(e.Config.Name)

	// Calculate all of our timeouts
	heartbeatInterval := time.Duration(e.Config.Peer.HeartbeatInterval) * time.Millisecond
	electionTimeout := time.Duration(e.Config.Peer.ElectionTimeout) * time.Millisecond
	dialTimeout := (3 * heartbeatInterval) + electionTimeout
	responseHeaderTimeout := (3 * heartbeatInterval) + electionTimeout

	// Create peer server
	psConfig := server.PeerServerConfig{
		Name:          e.Config.Name,
		Scheme:        e.Config.PeerTLSInfo().Scheme(),
		URL:           e.Config.Peer.Addr,
		SnapshotCount: e.Config.SnapshotCount,
		RetryTimes:    e.Config.MaxRetryAttempts,
		RetryInterval: e.Config.RetryInterval,
	}
	e.PeerServer = server.NewPeerServer(psConfig, e.Registry, e.Store, &mb, followersStats, serverStats)

	// Create raft transporter and server
	raftTransporter := server.NewTransporter(followersStats, serverStats, e.Registry, heartbeatInterval, dialTimeout, responseHeaderTimeout)
	if psConfig.Scheme == "https" {
		raftClientTLSConfig, err := e.Config.PeerTLSInfo().ClientConfig()
		if err != nil {
			log.Fatal("raft client TLS error: ", err)
		}
		raftTransporter.SetTLSConfig(*raftClientTLSConfig)
	}
	raftServer, err := raft.NewServer(e.Config.Name, e.Config.DataDir, raftTransporter, e.Store, e.PeerServer, "")
	if err != nil {
//.........这里部分代码省略.........