Golang libnetwork.NetworkOptionPersist函数代码示例

func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkController, error) {
	netOptions, err := daemon.networkOptions(config)
	if err != nil {
		return nil, err
	}

	//创建controller，具体代码在libnetwork/controller.go中。
	//主要注册controller的网络驱动，ip地址管理的驱动。
	controller, err := libnetwork.New(netOptions...)
	if err != nil {
		return nil, fmt.Errorf("error obtaining controller instance: %v", err)
	}

	// Initialize default network on "null"
	if _, err := controller.NewNetwork("null", "none", libnetwork.NetworkOptionPersist(false)); err != nil {
		return nil, fmt.Errorf("Error creating default \"null\" network: %v", err)
	}

	// Initialize default network on "host"
	if _, err := controller.NewNetwork("host", "host", libnetwork.NetworkOptionPersist(false)); err != nil {
		return nil, fmt.Errorf("Error creating default \"host\" network: %v", err)
	}

	//查看bridge模式有没有被禁用。
	if !config.DisableBridge {
		// Initialize default driver "bridge"
		//初始化bridge driver。
		if err := initBridgeDriver(controller, config); err != nil {
			return nil, err
		}
	}

	return controller, nil
}

func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
	netOptions, err := daemon.networkOptions(config, daemon.PluginStore, activeSandboxes)
	if err != nil {
		return nil, err
	}

	controller, err := libnetwork.New(netOptions...)
	if err != nil {
		return nil, fmt.Errorf("error obtaining controller instance: %v", err)
	}

	if len(activeSandboxes) > 0 {
		logrus.Info("There are old running containers, the network config will not take affect")
		return controller, nil
	}

	// Initialize default network on "null"
	if n, _ := controller.NetworkByName("none"); n == nil {
		if _, err := controller.NewNetwork("null", "none", "", libnetwork.NetworkOptionPersist(true)); err != nil {
			return nil, fmt.Errorf("Error creating default \"null\" network: %v", err)
		}
	}

	// Initialize default network on "host"
	if n, _ := controller.NetworkByName("host"); n == nil {
		if _, err := controller.NewNetwork("host", "host", "", libnetwork.NetworkOptionPersist(true)); err != nil {
			return nil, fmt.Errorf("Error creating default \"host\" network: %v", err)
		}
	}

	// Clear stale bridge network
	if n, err := controller.NetworkByName("bridge"); err == nil {
		if err = n.Delete(); err != nil {
			return nil, fmt.Errorf("could not delete the default bridge network: %v", err)
		}
	}

	if !config.DisableBridge {
		// Initialize default driver "bridge"
		if err := initBridgeDriver(controller, config); err != nil {
			return nil, err
		}
	} else {
		removeDefaultBridgeInterface()
	}

	return controller, nil
}

func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
	netOptions, err := daemon.networkOptions(config, daemon.PluginStore, activeSandboxes)
	if err != nil {
		return nil, err
	}

	controller, err := libnetwork.New(netOptions...)
	if err != nil {
		return nil, fmt.Errorf("error obtaining controller instance: %v", err)
	}

	// Initialize default network on "null"
	if _, err := controller.NewNetwork("null", "none", "", libnetwork.NetworkOptionPersist(false)); err != nil {
		return nil, fmt.Errorf("Error creating default 'null' network: %v", err)
	}

	if !config.DisableBridge {
		// Initialize default driver "bridge"
		if err := initBridgeDriver(controller, config); err != nil {
			return nil, err
		}
	}

	return controller, nil
}

func createDefaultNetwork(c libnetwork.NetworkController) {
	nw := c.Config().Daemon.DefaultNetwork
	d := c.Config().Daemon.DefaultDriver
	createOptions := []libnetwork.NetworkOption{}
	genericOption := options.Generic{}

	if nw != "" && d != "" {
		// Bridge driver is special due to legacy reasons
		if d == "bridge" {
			genericOption[netlabel.GenericData] = map[string]interface{}{
				"BridgeName": nw,
			}
			createOptions = append(createOptions,
				libnetwork.NetworkOptionGeneric(genericOption),
				libnetwork.NetworkOptionPersist(false))
		}
		_, err := c.NewNetwork(d, nw, createOptions...)
		if err != nil {
			logrus.Errorf("Error creating default network : %s : %v", nw, err)
		}
	}
}

func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkController, error) {
	netOptions, err := daemon.networkOptions(config)
	if err != nil {
		return nil, err
	}
	controller, err := libnetwork.New(netOptions...)
	if err != nil {
		return nil, fmt.Errorf("error obtaining controller instance: %v", err)
	}

	hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
	if err != nil {
		return nil, err
	}

	// Remove networks not present in HNS
	for _, v := range controller.Networks() {
		options := v.Info().DriverOptions()
		hnsid := options[winlibnetwork.HNSID]
		found := false

		for _, v := range hnsresponse {
			if v.Id == hnsid {
				found = true
				break
			}
		}

		if !found {
			err = v.Delete()
			if err != nil {
				return nil, err
			}
		}
	}

	_, err = controller.NewNetwork("null", "none", libnetwork.NetworkOptionPersist(false))
	if err != nil {
		return nil, err
	}

	// discover and add HNS networks to windows
	// network that exist are removed and added again
	for _, v := range hnsresponse {
		var n libnetwork.Network
		s := func(current libnetwork.Network) bool {
			options := current.Info().DriverOptions()
			if options[winlibnetwork.HNSID] == v.Id {
				n = current
				return true
			}
			return false
		}

		controller.WalkNetworks(s)
		if n != nil {
			v.Name = n.Name()
			n.Delete()
		}

		netOption := map[string]string{
			winlibnetwork.NetworkName: v.Name,
			winlibnetwork.HNSID:       v.Id,
		}

		v4Conf := []*libnetwork.IpamConf{}
		for _, subnet := range v.Subnets {
			ipamV4Conf := libnetwork.IpamConf{}
			ipamV4Conf.PreferredPool = subnet.AddressPrefix
			ipamV4Conf.Gateway = subnet.GatewayAddress
			v4Conf = append(v4Conf, &ipamV4Conf)
		}

		name := v.Name
		// There is only one nat network supported in windows.
		// If it exists with a different name add it as the default name
		if runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
			name = runconfig.DefaultDaemonNetworkMode().NetworkName()
		}

		v6Conf := []*libnetwork.IpamConf{}
		_, err := controller.NewNetwork(strings.ToLower(v.Type), name,
			libnetwork.NetworkOptionGeneric(options.Generic{
				netlabel.GenericData: netOption,
			}),
			libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
		)

		if err != nil {
			logrus.Errorf("Error occurred when creating network %v", err)
		}
	}

	if !config.DisableBridge {
		// Initialize default driver "bridge"
		if err := initBridgeDriver(controller, config); err != nil {
			return nil, err
		}
	}

//.........这里部分代码省略.........

func (daemon *Daemon) createNetwork(create types.NetworkCreateRequest, id string, agent bool) (*types.NetworkCreateResponse, error) {
	// If there is a pending ingress network creation wait here
	// since ingress network creation can happen via node download
	// from manager or task download.
	if isIngressNetwork(create.Name) {
		defer ingressWait()()
	}

	if runconfig.IsPreDefinedNetwork(create.Name) && !agent {
		err := fmt.Errorf("%s is a pre-defined network and cannot be created", create.Name)
		return nil, errors.NewRequestForbiddenError(err)
	}

	var warning string
	nw, err := daemon.GetNetworkByName(create.Name)
	if err != nil {
		if _, ok := err.(libnetwork.ErrNoSuchNetwork); !ok {
			return nil, err
		}
	}
	if nw != nil {
		if create.CheckDuplicate {
			return nil, libnetwork.NetworkNameError(create.Name)
		}
		warning = fmt.Sprintf("Network with name %s (id : %s) already exists", nw.Name(), nw.ID())
	}

	c := daemon.netController
	driver := create.Driver
	if driver == "" {
		driver = c.Config().Daemon.DefaultDriver
	}

	nwOptions := []libnetwork.NetworkOption{
		libnetwork.NetworkOptionEnableIPv6(create.EnableIPv6),
		libnetwork.NetworkOptionDriverOpts(create.Options),
		libnetwork.NetworkOptionLabels(create.Labels),
	}

	if create.IPAM != nil {
		ipam := create.IPAM
		v4Conf, v6Conf, err := getIpamConfig(ipam.Config)
		if err != nil {
			return nil, err
		}
		nwOptions = append(nwOptions, libnetwork.NetworkOptionIpam(ipam.Driver, "", v4Conf, v6Conf, ipam.Options))
	}

	if create.Internal {
		nwOptions = append(nwOptions, libnetwork.NetworkOptionInternalNetwork())
	}
	if agent {
		nwOptions = append(nwOptions, libnetwork.NetworkOptionDynamic())
		nwOptions = append(nwOptions, libnetwork.NetworkOptionPersist(false))
	}

	if isIngressNetwork(create.Name) {
		nwOptions = append(nwOptions, libnetwork.NetworkOptionIngress())
	}

	n, err := c.NewNetwork(driver, create.Name, id, nwOptions...)
	if err != nil {
		return nil, err
	}

	daemon.LogNetworkEvent(n, "create")

	return &types.NetworkCreateResponse{
		ID:      n.ID(),
		Warning: warning,
	}, nil
}

func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
	netOption := options.Generic{
		"BridgeName":         config.Bridge.Iface,
		"DefaultBridge":      true,
		"Mtu":                config.Mtu,
		"EnableIPMasquerade": config.Bridge.EnableIPMasq,
		"EnableICC":          config.Bridge.InterContainerCommunication,
	}

	if config.Bridge.IP != "" {
		ip, bipNet, err := net.ParseCIDR(config.Bridge.IP)
		if err != nil {
			return err
		}

		bipNet.IP = ip
		netOption["AddressIPv4"] = bipNet
	}

	if config.Bridge.FixedCIDR != "" {
		_, fCIDR, err := net.ParseCIDR(config.Bridge.FixedCIDR)
		if err != nil {
			return err
		}

		netOption["FixedCIDR"] = fCIDR
	}

	if config.Bridge.FixedCIDRv6 != "" {
		_, fCIDRv6, err := net.ParseCIDR(config.Bridge.FixedCIDRv6)
		if err != nil {
			return err
		}

		netOption["FixedCIDRv6"] = fCIDRv6
	}

	if config.Bridge.DefaultGatewayIPv4 != nil {
		netOption["DefaultGatewayIPv4"] = config.Bridge.DefaultGatewayIPv4
	}

	if config.Bridge.DefaultGatewayIPv6 != nil {
		netOption["DefaultGatewayIPv6"] = config.Bridge.DefaultGatewayIPv6
	}

	// --ip processing
	if config.Bridge.DefaultIP != nil {
		netOption["DefaultBindingIP"] = config.Bridge.DefaultIP
	}

	// Initialize default network on "bridge" with the same name
	_, err := controller.NewNetwork("bridge", "bridge",
		libnetwork.NetworkOptionGeneric(options.Generic{
			netlabel.GenericData: netOption,
			netlabel.EnableIPv6:  config.Bridge.EnableIPv6,
		}),
		libnetwork.NetworkOptionPersist(false))
	if err != nil {
		return fmt.Errorf("Error creating default \"bridge\" network: %v", err)
	}
	return nil
}

func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
	netOptions, err := daemon.networkOptions(config, nil, nil)
	if err != nil {
		return nil, err
	}
	controller, err := libnetwork.New(netOptions...)
	if err != nil {
		return nil, fmt.Errorf("error obtaining controller instance: %v", err)
	}

	hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
	if err != nil {
		return nil, err
	}

	// Remove networks not present in HNS
	for _, v := range controller.Networks() {
		options := v.Info().DriverOptions()
		hnsid := options[winlibnetwork.HNSID]
		found := false

		for _, v := range hnsresponse {
			if v.Id == hnsid {
				found = true
				break
			}
		}

		if !found {
			// global networks should not be deleted by local HNS
			if v.Info().Scope() != datastore.GlobalScope {
				err = v.Delete()
				if err != nil {
					logrus.Errorf("Error occurred when removing network %v", err)
				}
			}
		}
	}

	_, err = controller.NewNetwork("null", "none", "", libnetwork.NetworkOptionPersist(false))
	if err != nil {
		return nil, err
	}

	defaultNetworkExists := false

	if network, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
		options := network.Info().DriverOptions()
		for _, v := range hnsresponse {
			if options[winlibnetwork.HNSID] == v.Id {
				defaultNetworkExists = true
				break
			}
		}
	}

	// discover and add HNS networks to windows
	// network that exist are removed and added again
	for _, v := range hnsresponse {
		var n libnetwork.Network
		s := func(current libnetwork.Network) bool {
			options := current.Info().DriverOptions()
			if options[winlibnetwork.HNSID] == v.Id {
				n = current
				return true
			}
			return false
		}

		controller.WalkNetworks(s)
		if n != nil {
			// global networks should not be deleted by local HNS
			if n.Info().Scope() == datastore.GlobalScope {
				continue
			}
			v.Name = n.Name()
			// This will not cause network delete from HNS as the network
			// is not yet populated in the libnetwork windows driver
			n.Delete()
		}

		netOption := map[string]string{
			winlibnetwork.NetworkName: v.Name,
			winlibnetwork.HNSID:       v.Id,
		}

		v4Conf := []*libnetwork.IpamConf{}
		for _, subnet := range v.Subnets {
			ipamV4Conf := libnetwork.IpamConf{}
			ipamV4Conf.PreferredPool = subnet.AddressPrefix
			ipamV4Conf.Gateway = subnet.GatewayAddress
			v4Conf = append(v4Conf, &ipamV4Conf)
		}

		name := v.Name

		// If there is no nat network create one from the first NAT network
		// encountered
		if !defaultNetworkExists && runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
			name = runconfig.DefaultDaemonNetworkMode().NetworkName()
//.........这里部分代码省略.........