Golang raft.DefaultNodeConfig函數代碼示例

// NewNode creates a new raft node to use for tests
func NewNode(t *testing.T, clockSource *fakeclock.FakeClock, tc *cautils.TestCA, opts ...raft.NodeOptions) *TestNode {
	l, err := net.Listen("tcp", "127.0.0.1:0")
	require.NoError(t, err, "can't bind to raft service port")
	wrappedListener := NewWrappedListener(l)

	securityConfig, err := tc.NewNodeConfig(ca.ManagerRole)
	require.NoError(t, err)

	serverOpts := []grpc.ServerOption{grpc.Creds(securityConfig.ServerTLSCreds)}
	s := grpc.NewServer(serverOpts...)

	cfg := raft.DefaultNodeConfig()

	stateDir, err := ioutil.TempDir("", "test-raft")
	require.NoError(t, err, "can't create temporary state directory")

	keyRotator := NewSimpleKeyRotator(raft.EncryptionKeys{CurrentDEK: []byte("current")})
	newNodeOpts := raft.NodeOptions{
		ID:             securityConfig.ClientTLSCreds.NodeID(),
		Addr:           l.Addr().String(),
		Config:         cfg,
		StateDir:       stateDir,
		ClockSource:    clockSource,
		TLSCredentials: securityConfig.ClientTLSCreds,
		KeyRotator:     keyRotator,
	}

	if len(opts) > 1 {
		panic("more than one optional argument provided")
	}
	if len(opts) == 1 {
		newNodeOpts.JoinAddr = opts[0].JoinAddr
		if opts[0].Addr != "" {
			newNodeOpts.Addr = opts[0].Addr
		}
	}

	n := raft.NewNode(newNodeOpts)

	healthServer := health.NewHealthServer()
	api.RegisterHealthServer(s, healthServer)
	raft.Register(s, n)

	go func() {
		// After stopping, we should receive an error from Serve
		assert.Error(t, s.Serve(wrappedListener))
	}()

	healthServer.SetServingStatus("Raft", api.HealthCheckResponse_SERVING)

	return &TestNode{
		Node:           n,
		Listener:       wrappedListener,
		SecurityConfig: securityConfig,
		Address:        newNodeOpts.Addr,
		StateDir:       newNodeOpts.StateDir,
		Server:         s,
		KeyRotator:     keyRotator,
	}
}

// CopyNode returns a copy of a node
func CopyNode(t *testing.T, clockSource *fakeclock.FakeClock, oldNode *TestNode, forceNewCluster bool, kr *SimpleKeyRotator) (*TestNode, context.Context) {
	wrappedListener := RecycleWrappedListener(oldNode.Listener)
	securityConfig := oldNode.SecurityConfig
	serverOpts := []grpc.ServerOption{grpc.Creds(securityConfig.ServerTLSCreds)}
	s := grpc.NewServer(serverOpts...)

	cfg := raft.DefaultNodeConfig()

	if kr == nil {
		kr = oldNode.KeyRotator
	}

	newNodeOpts := raft.NodeOptions{
		ID:              securityConfig.ClientTLSCreds.NodeID(),
		Addr:            oldNode.Address,
		Config:          cfg,
		StateDir:        oldNode.StateDir,
		ForceNewCluster: forceNewCluster,
		ClockSource:     clockSource,
		SendTimeout:     2 * time.Second,
		TLSCredentials:  securityConfig.ClientTLSCreds,
		KeyRotator:      kr,
	}

	ctx, cancel := context.WithCancel(context.Background())
	n := raft.NewNode(newNodeOpts)

	healthServer := health.NewHealthServer()
	api.RegisterHealthServer(s, healthServer)
	raft.Register(s, n)

	go func() {
		// After stopping, we should receive an error from Serve
		require.Error(t, s.Serve(wrappedListener))
	}()

	healthServer.SetServingStatus("Raft", api.HealthCheckResponse_SERVING)

	return &TestNode{
		Node:           n,
		Listener:       wrappedListener,
		SecurityConfig: securityConfig,
		Address:        newNodeOpts.Addr,
		StateDir:       newNodeOpts.StateDir,
		cancel:         cancel,
		Server:         s,
		KeyRotator:     kr,
	}, ctx
}

// New creates a Manager which has not started to accept requests yet.
func New(config *Config) (*Manager, error) {
	dispatcherConfig := dispatcher.DefaultConfig()

	if config.ProtoAddr == nil {
		config.ProtoAddr = make(map[string]string)
	}

	if config.ProtoListener != nil && config.ProtoListener["tcp"] != nil {
		config.ProtoAddr["tcp"] = config.ProtoListener["tcp"].Addr().String()
	}

	// If an AdvertiseAddr was specified, we use that as our
	// externally-reachable address.
	tcpAddr := config.AdvertiseAddr

	if tcpAddr == "" {
		// Otherwise, we know we are joining an existing swarm. Use a
		// wildcard address to trigger remote autodetection of our
		// address.
		_, tcpAddrPort, err := net.SplitHostPort(config.ProtoAddr["tcp"])
		if err != nil {
			return nil, fmt.Errorf("missing or invalid listen address %s", config.ProtoAddr["tcp"])
		}

		// Even with an IPv6 listening address, it's okay to use
		// 0.0.0.0 here. Any "unspecified" (wildcard) IP will
		// be substituted with the actual source address.
		tcpAddr = net.JoinHostPort("0.0.0.0", tcpAddrPort)
	}

	err := os.MkdirAll(filepath.Dir(config.ProtoAddr["unix"]), 0700)
	if err != nil {
		return nil, fmt.Errorf("failed to create socket directory: %v", err)
	}

	err = os.MkdirAll(config.StateDir, 0700)
	if err != nil {
		return nil, fmt.Errorf("failed to create state directory: %v", err)
	}

	raftStateDir := filepath.Join(config.StateDir, "raft")
	err = os.MkdirAll(raftStateDir, 0700)
	if err != nil {
		return nil, fmt.Errorf("failed to create raft state directory: %v", err)
	}

	var listeners map[string]net.Listener
	if len(config.ProtoListener) > 0 {
		listeners = config.ProtoListener
	} else {
		listeners = make(map[string]net.Listener)

		for proto, addr := range config.ProtoAddr {
			l, err := net.Listen(proto, addr)

			// A unix socket may fail to bind if the file already
			// exists. Try replacing the file.
			unwrappedErr := err
			if op, ok := unwrappedErr.(*net.OpError); ok {
				unwrappedErr = op.Err
			}
			if sys, ok := unwrappedErr.(*os.SyscallError); ok {
				unwrappedErr = sys.Err
			}
			if proto == "unix" && unwrappedErr == syscall.EADDRINUSE {
				os.Remove(addr)
				l, err = net.Listen(proto, addr)
				if err != nil {
					return nil, err
				}
			} else if err != nil {
				return nil, err
			}
			listeners[proto] = l
		}
	}

	raftCfg := raft.DefaultNodeConfig()

	if config.ElectionTick > 0 {
		raftCfg.ElectionTick = int(config.ElectionTick)
	}
	if config.HeartbeatTick > 0 {
		raftCfg.HeartbeatTick = int(config.HeartbeatTick)
	}

	newNodeOpts := raft.NewNodeOptions{
		ID:              config.SecurityConfig.ClientTLSCreds.NodeID(),
		Addr:            tcpAddr,
		JoinAddr:        config.JoinRaft,
		Config:          raftCfg,
		StateDir:        raftStateDir,
		ForceNewCluster: config.ForceNewCluster,
		TLSCredentials:  config.SecurityConfig.ClientTLSCreds,
	}
	RaftNode := raft.NewNode(context.TODO(), newNodeOpts)

	opts := []grpc.ServerOption{
		grpc.Creds(config.SecurityConfig.ServerTLSCreds)}
//.........這裏部分代碼省略.........

// New creates a Manager which has not started to accept requests yet.
func New(config *Config) (*Manager, error) {
	dispatcherConfig := dispatcher.DefaultConfig()

	if config.ProtoAddr == nil {
		config.ProtoAddr = make(map[string]string)
	}

	if config.ProtoListener != nil && config.ProtoListener["tcp"] != nil {
		config.ProtoAddr["tcp"] = config.ProtoListener["tcp"].Addr().String()
	}

	tcpAddr := config.ProtoAddr["tcp"]

	if tcpAddr == "" {
		return nil, errors.New("no tcp listen address or listener provided")
	}

	listenHost, listenPort, err := net.SplitHostPort(tcpAddr)
	if err == nil {
		ip := net.ParseIP(listenHost)
		if ip != nil && ip.IsUnspecified() {
			// Find our local IP address associated with the default route.
			// This may not be the appropriate address to use for internal
			// cluster communications, but it seems like the best default.
			// The admin can override this address if necessary.
			conn, err := net.Dial("udp", "8.8.8.8:53")
			if err != nil {
				return nil, fmt.Errorf("could not determine local IP address: %v", err)
			}
			localAddr := conn.LocalAddr().String()
			conn.Close()

			listenHost, _, err = net.SplitHostPort(localAddr)
			if err != nil {
				return nil, fmt.Errorf("could not split local IP address: %v", err)
			}

			tcpAddr = net.JoinHostPort(listenHost, listenPort)
		}
	}

	// TODO(stevvooe): Reported address of manager is plumbed to listen addr
	// for now, may want to make this separate. This can be tricky to get right
	// so we need to make it easy to override. This needs to be the address
	// through which agent nodes access the manager.
	dispatcherConfig.Addr = tcpAddr

	err = os.MkdirAll(filepath.Dir(config.ProtoAddr["unix"]), 0700)
	if err != nil {
		return nil, fmt.Errorf("failed to create socket directory: %v", err)
	}

	err = os.MkdirAll(config.StateDir, 0700)
	if err != nil {
		return nil, fmt.Errorf("failed to create state directory: %v", err)
	}

	raftStateDir := filepath.Join(config.StateDir, "raft")
	err = os.MkdirAll(raftStateDir, 0700)
	if err != nil {
		return nil, fmt.Errorf("failed to create raft state directory: %v", err)
	}

	var listeners map[string]net.Listener
	if len(config.ProtoListener) > 0 {
		listeners = config.ProtoListener
	} else {
		listeners = make(map[string]net.Listener)

		for proto, addr := range config.ProtoAddr {
			l, err := net.Listen(proto, addr)

			// A unix socket may fail to bind if the file already
			// exists. Try replacing the file.
			unwrappedErr := err
			if op, ok := unwrappedErr.(*net.OpError); ok {
				unwrappedErr = op.Err
			}
			if sys, ok := unwrappedErr.(*os.SyscallError); ok {
				unwrappedErr = sys.Err
			}
			if proto == "unix" && unwrappedErr == syscall.EADDRINUSE {
				os.Remove(addr)
				l, err = net.Listen(proto, addr)
				if err != nil {
					return nil, err
				}
			} else if err != nil {
				return nil, err
			}
			listeners[proto] = l
		}
	}

	raftCfg := raft.DefaultNodeConfig()

	if config.ElectionTick > 0 {
		raftCfg.ElectionTick = int(config.ElectionTick)
	}
//.........這裏部分代碼省略.........

// New creates a Manager which has not started to accept requests yet.
func New(config *Config) (*Manager, error) {
	dispatcherConfig := dispatcher.DefaultConfig()

	// If an AdvertiseAddr was specified, we use that as our
	// externally-reachable address.
	advertiseAddr := config.RemoteAPI.AdvertiseAddr

	var advertiseAddrPort string
	if advertiseAddr == "" {
		// Otherwise, we know we are joining an existing swarm. Use a
		// wildcard address to trigger remote autodetection of our
		// address.
		var err error
		_, advertiseAddrPort, err = net.SplitHostPort(config.RemoteAPI.ListenAddr)
		if err != nil {
			return nil, fmt.Errorf("missing or invalid listen address %s", config.RemoteAPI.ListenAddr)
		}

		// Even with an IPv6 listening address, it's okay to use
		// 0.0.0.0 here. Any "unspecified" (wildcard) IP will
		// be substituted with the actual source address.
		advertiseAddr = net.JoinHostPort("0.0.0.0", advertiseAddrPort)
	}

	err := os.MkdirAll(config.StateDir, 0700)
	if err != nil {
		return nil, errors.Wrap(err, "failed to create state directory")
	}

	raftStateDir := filepath.Join(config.StateDir, "raft")
	err = os.MkdirAll(raftStateDir, 0700)
	if err != nil {
		return nil, errors.Wrap(err, "failed to create raft state directory")
	}

	var listeners []net.Listener

	// don't create a socket directory if we're on windows. we used named pipe
	if runtime.GOOS != "windows" {
		err := os.MkdirAll(filepath.Dir(config.ControlAPI), 0700)
		if err != nil {
			return nil, errors.Wrap(err, "failed to create socket directory")
		}
	}

	l, err := xnet.ListenLocal(config.ControlAPI)

	// A unix socket may fail to bind if the file already
	// exists. Try replacing the file.
	if runtime.GOOS != "windows" {
		unwrappedErr := err
		if op, ok := unwrappedErr.(*net.OpError); ok {
			unwrappedErr = op.Err
		}
		if sys, ok := unwrappedErr.(*os.SyscallError); ok {
			unwrappedErr = sys.Err
		}
		if unwrappedErr == syscall.EADDRINUSE {
			os.Remove(config.ControlAPI)
			l, err = xnet.ListenLocal(config.ControlAPI)
		}
	}
	if err != nil {
		return nil, errors.Wrap(err, "failed to listen on control API address")
	}

	listeners = append(listeners, l)

	l, err = net.Listen("tcp", config.RemoteAPI.ListenAddr)
	if err != nil {
		return nil, errors.Wrap(err, "failed to listen on remote API address")
	}
	if advertiseAddrPort == "0" {
		advertiseAddr = l.Addr().String()
		config.RemoteAPI.ListenAddr = advertiseAddr
	}
	listeners = append(listeners, l)

	raftCfg := raft.DefaultNodeConfig()

	if config.ElectionTick > 0 {
		raftCfg.ElectionTick = int(config.ElectionTick)
	}
	if config.HeartbeatTick > 0 {
		raftCfg.HeartbeatTick = int(config.HeartbeatTick)
	}

	newNodeOpts := raft.NodeOptions{
		ID:              config.SecurityConfig.ClientTLSCreds.NodeID(),
		Addr:            advertiseAddr,
		JoinAddr:        config.JoinRaft,
		Config:          raftCfg,
		StateDir:        raftStateDir,
		ForceNewCluster: config.ForceNewCluster,
		TLSCredentials:  config.SecurityConfig.ClientTLSCreds,
	}
	raftNode := raft.NewNode(newNodeOpts)

	opts := []grpc.ServerOption{
//.........這裏部分代碼省略.........

// New creates a Manager which has not started to accept requests yet.
func New(config *Config) (*Manager, error) {
	err := os.MkdirAll(config.StateDir, 0700)
	if err != nil {
		return nil, errors.Wrap(err, "failed to create state directory")
	}

	raftStateDir := filepath.Join(config.StateDir, "raft")
	err = os.MkdirAll(raftStateDir, 0700)
	if err != nil {
		return nil, errors.Wrap(err, "failed to create raft state directory")
	}

	raftCfg := raft.DefaultNodeConfig()

	if config.ElectionTick > 0 {
		raftCfg.ElectionTick = int(config.ElectionTick)
	}
	if config.HeartbeatTick > 0 {
		raftCfg.HeartbeatTick = int(config.HeartbeatTick)
	}

	dekRotator, err := NewRaftDEKManager(config.SecurityConfig.KeyWriter())
	if err != nil {
		return nil, err
	}

	newNodeOpts := raft.NodeOptions{
		ID:              config.SecurityConfig.ClientTLSCreds.NodeID(),
		JoinAddr:        config.JoinRaft,
		Config:          raftCfg,
		StateDir:        raftStateDir,
		ForceNewCluster: config.ForceNewCluster,
		TLSCredentials:  config.SecurityConfig.ClientTLSCreds,
		KeyRotator:      dekRotator,
	}
	raftNode := raft.NewNode(newNodeOpts)

	opts := []grpc.ServerOption{
		grpc.Creds(config.SecurityConfig.ServerTLSCreds)}

	m := &Manager{
		config:          *config,
		caserver:        ca.NewServer(raftNode.MemoryStore(), config.SecurityConfig),
		dispatcher:      dispatcher.New(raftNode, dispatcher.DefaultConfig()),
		logbroker:       logbroker.New(raftNode.MemoryStore()),
		server:          grpc.NewServer(opts...),
		localserver:     grpc.NewServer(opts...),
		raftNode:        raftNode,
		started:         make(chan struct{}),
		dekRotator:      dekRotator,
		remoteListener:  make(chan net.Listener, 1),
		controlListener: make(chan net.Listener, 1),
		errServe:        make(chan error, 2),
	}

	if config.ControlAPI != "" {
		m.config.ControlAPI = ""
		if err := m.BindControl(config.ControlAPI); err != nil {
			return nil, err
		}
	}

	if config.RemoteAPI != nil {
		m.config.RemoteAPI = nil
		// The context isn't used in this case (before (*Manager).Run).
		if err := m.BindRemote(context.Background(), *config.RemoteAPI); err != nil {
			if config.ControlAPI != "" {
				l := <-m.controlListener
				l.Close()
			}
			return nil, err
		}
	}

	return m, nil
}