Пример #1
0
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)

	var psListener net.Listener
	if psConfig.Scheme == "https" {
		psListener, err = server.NewTLSListener(info.RaftListenHost, info.RaftTLS.CertFile, info.RaftTLS.KeyFile)
	} else {
		psListener, err = server.NewListener(info.RaftListenHost)
	}
	if err != nil {
		panic(err)
	}

	// Create Raft transporter and server
	raftTransporter := server.NewTransporter(followersStats, serverStats, registry, heartbeatTimeout, dialTimeout, responseHeaderTimeout)
	if psConfig.Scheme == "https" {
		raftTransporter.SetTLSConfig(peerTLSConfig.Client)
	}
	raftServer, err := raft.NewServer(info.Name, config.DataDir, raftTransporter, store, ps, "")
	if err != nil {
		log.Fatal(err)
	}
	raftServer.SetElectionTimeout(electionTimeout)
	raftServer.SetHeartbeatTimeout(heartbeatTimeout)
	ps.SetRaftServer(raftServer)

	// Create client server.
	s := server.New(info.Name, info.EtcdURL, ps, registry, store, &mb)

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

	var sListener net.Listener
	if tlsConfig.Scheme == "https" {
		sListener, err = server.NewTLSListener(info.EtcdListenHost, info.EtcdTLS.CertFile, info.EtcdTLS.KeyFile)
	} else {
		sListener, err = server.NewListener(info.EtcdListenHost)
	}
	if err != nil {
		panic(err)
	}

	ps.SetServer(s)

	ps.Start(config.Snapshot, config.Peers)

	// Run peer server in separate thread while the client server blocks.
	go func() {
		log.Infof("raft server [name %s, listen on %s, advertised url %s]", ps.Config.Name, psListener.Addr(), ps.Config.URL)
		sHTTP := &ehttp.CORSHandler{ps.HTTPHandler(), corsInfo}
		log.Fatal(http.Serve(psListener, sHTTP))
	}()

	log.Infof("etcd server [name %s, listen on %s, advertised url %s]", s.Name, sListener.Addr(), s.URL())
	sHTTP := &ehttp.CORSHandler{s.HTTPHandler(), corsInfo}
	log.Fatal(http.Serve(sListener, sHTTP))
}
Пример #2
0
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())
}
Пример #3
0
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())
}