Golang Container.NetworkSettings方法代码示例

func (daemon *Daemon) updateNetworkSettings(container *container.Container, n libnetwork.Network) error {
	if container.NetworkSettings == nil {
		container.NetworkSettings = &network.Settings{Networks: make(map[string]*networktypes.EndpointSettings)}
	}

	if !container.HostConfig.NetworkMode.IsHost() && containertypes.NetworkMode(n.Type()).IsHost() {
		return runconfig.ErrConflictHostNetwork
	}

	for s := range container.NetworkSettings.Networks {
		sn, err := daemon.FindNetwork(s)
		if err != nil {
			continue
		}

		if sn.Name() == n.Name() {
			// Avoid duplicate config
			return nil
		}
		if !containertypes.NetworkMode(sn.Type()).IsPrivate() ||
			!containertypes.NetworkMode(n.Type()).IsPrivate() {
			return runconfig.ErrConflictSharedNetwork
		}
		if containertypes.NetworkMode(sn.Name()).IsNone() ||
			containertypes.NetworkMode(n.Name()).IsNone() {
			return runconfig.ErrConflictNoNetwork
		}
	}

	if _, ok := container.NetworkSettings.Networks[n.Name()]; !ok {
		container.NetworkSettings.Networks[n.Name()] = new(networktypes.EndpointSettings)
	}

	return nil
}

func (daemon *Daemon) releaseNetwork(container *container.Container) {
	if container.HostConfig.NetworkMode.IsContainer() || container.Config.NetworkDisabled {
		return
	}

	sid := container.NetworkSettings.SandboxID
	networks := container.NetworkSettings.Networks
	for n := range networks {
		networks[n] = &networktypes.EndpointSettings{}
	}

	container.NetworkSettings = &network.Settings{Networks: networks}

	if sid == "" || len(networks) == 0 {
		return
	}

	sb, err := daemon.netController.SandboxByID(sid)
	if err != nil {
		logrus.Errorf("error locating sandbox id %s: %v", sid, err)
		return
	}

	if err := sb.Delete(); err != nil {
		logrus.Errorf("Error deleting sandbox id %s for container %s: %v", sid, container.ID, err)
	}
}

// updateContainerNetworkSettings update the network settings
func (daemon *Daemon) updateContainerNetworkSettings(container *container.Container, endpointsConfig map[string]*networktypes.EndpointSettings) error {
	var (
		n   libnetwork.Network
		err error
	)

	// TODO Windows: Remove this once TP4 builds are not supported
	// Windows TP4 build don't support libnetwork and in that case
	// daemon.netController will be nil
	if daemon.netController == nil {
		return nil
	}

	mode := container.HostConfig.NetworkMode
	if container.Config.NetworkDisabled || mode.IsContainer() {
		return nil
	}

	networkName := mode.NetworkName()
	if mode.IsDefault() {
		networkName = daemon.netController.Config().Daemon.DefaultNetwork
	}
	if mode.IsUserDefined() {
		n, err = daemon.FindNetwork(networkName)
		if err != nil {
			return err
		}
		networkName = n.Name()
	}
	if container.NetworkSettings == nil {
		container.NetworkSettings = &network.Settings{}
	}
	if len(endpointsConfig) > 0 {
		container.NetworkSettings.Networks = endpointsConfig
	}
	if container.NetworkSettings.Networks == nil {
		container.NetworkSettings.Networks = make(map[string]*networktypes.EndpointSettings)
		container.NetworkSettings.Networks[networkName] = new(networktypes.EndpointSettings)
	}
	if !mode.IsUserDefined() {
		return nil
	}
	// Make sure to internally store the per network endpoint config by network name
	if _, ok := container.NetworkSettings.Networks[networkName]; ok {
		return nil
	}
	if nwConfig, ok := container.NetworkSettings.Networks[n.ID()]; ok {
		container.NetworkSettings.Networks[networkName] = nwConfig
		delete(container.NetworkSettings.Networks, n.ID())
		return nil
	}

	return nil
}

// updateContainerNetworkSettings update the network settings
func (daemon *Daemon) updateContainerNetworkSettings(container *container.Container, endpointsConfig map[string]*networktypes.EndpointSettings) error {
	var (
		n   libnetwork.Network
		err error
	)

	mode := container.HostConfig.NetworkMode
	if container.Config.NetworkDisabled || mode.IsContainer() {
		return nil
	}

	networkName := mode.NetworkName()
	if mode.IsDefault() {
		networkName = daemon.netController.Config().Daemon.DefaultNetwork
	}
	if mode.IsUserDefined() {
		n, err = daemon.FindNetwork(networkName)
		if err != nil {
			return err
		}
		if !container.Managed && n.Info().Dynamic() {
			return errClusterNetworkOnRun(networkName)
		}
		networkName = n.Name()
	}
	if container.NetworkSettings == nil {
		container.NetworkSettings = &network.Settings{}
	}
	if len(endpointsConfig) > 0 {
		container.NetworkSettings.Networks = endpointsConfig
	}
	if container.NetworkSettings.Networks == nil {
		container.NetworkSettings.Networks = make(map[string]*networktypes.EndpointSettings)
		container.NetworkSettings.Networks[networkName] = new(networktypes.EndpointSettings)
	}
	if !mode.IsUserDefined() {
		return nil
	}
	// Make sure to internally store the per network endpoint config by network name
	if _, ok := container.NetworkSettings.Networks[networkName]; ok {
		return nil
	}
	if nwConfig, ok := container.NetworkSettings.Networks[n.ID()]; ok {
		container.NetworkSettings.Networks[networkName] = nwConfig
		delete(container.NetworkSettings.Networks, n.ID())
		return nil
	}

	return nil
}

func (daemon *Daemon) releaseNetwork(container *container.Container) {
	if container.HostConfig.NetworkMode.IsContainer() || container.Config.NetworkDisabled {
		return
	}

	sid := container.NetworkSettings.SandboxID
	settings := container.NetworkSettings.Networks
	var networks []libnetwork.Network
	for n := range settings {
		if nw, err := daemon.FindNetwork(n); err == nil {
			networks = append(networks, nw)
		}
		settings[n] = &networktypes.EndpointSettings{}
	}

	container.NetworkSettings = &network.Settings{Networks: settings}

	if sid == "" || len(settings) == 0 {
		return
	}

	sb, err := daemon.netController.SandboxByID(sid)
	if err != nil {
		logrus.Errorf("error locating sandbox id %s: %v", sid, err)
		return
	}

	if err := sb.Delete(); err != nil {
		logrus.Errorf("Error deleting sandbox id %s for container %s: %v", sid, container.ID, err)
	}

	attributes := map[string]string{
		"container": container.ID,
	}
	for _, nw := range networks {
		daemon.LogNetworkEventWithAttributes(nw, "disconnect", attributes)
	}
}

// updateContainerNetworkSettings update the network settings
func (daemon *Daemon) updateContainerNetworkSettings(container *container.Container, endpointsConfig map[string]*networktypes.EndpointSettings) {
	var n libnetwork.Network

	mode := container.HostConfig.NetworkMode
	if container.Config.NetworkDisabled || mode.IsContainer() {
		return
	}

	networkName := mode.NetworkName()
	if mode.IsDefault() {
		networkName = daemon.netController.Config().Daemon.DefaultNetwork
	}

	if mode.IsUserDefined() {
		var err error

		n, err = daemon.FindNetwork(networkName)
		if err == nil {
			networkName = n.Name()
		}
	}

	if container.NetworkSettings == nil {
		container.NetworkSettings = &network.Settings{}
	}

	if len(endpointsConfig) > 0 {
		if container.NetworkSettings.Networks == nil {
			container.NetworkSettings.Networks = make(map[string]*network.EndpointSettings)
		}

		for name, epConfig := range endpointsConfig {
			container.NetworkSettings.Networks[name] = &network.EndpointSettings{
				EndpointSettings: epConfig,
			}
		}
	}

	if container.NetworkSettings.Networks == nil {
		container.NetworkSettings.Networks = make(map[string]*network.EndpointSettings)
		container.NetworkSettings.Networks[networkName] = &network.EndpointSettings{
			EndpointSettings: &networktypes.EndpointSettings{},
		}
	}

	// Convert any settings added by client in default name to
	// engine's default network name key
	if mode.IsDefault() {
		if nConf, ok := container.NetworkSettings.Networks[mode.NetworkName()]; ok {
			container.NetworkSettings.Networks[networkName] = nConf
			delete(container.NetworkSettings.Networks, mode.NetworkName())
		}
	}

	if !mode.IsUserDefined() {
		return
	}
	// Make sure to internally store the per network endpoint config by network name
	if _, ok := container.NetworkSettings.Networks[networkName]; ok {
		return
	}

	if n != nil {
		if nwConfig, ok := container.NetworkSettings.Networks[n.ID()]; ok {
			container.NetworkSettings.Networks[networkName] = nwConfig
			delete(container.NetworkSettings.Networks, n.ID())
			return
		}
	}
}