Golang HostConfig.NetworkMode方法代码示例

// modifyHostNetworkOptionForSandbox applies NetworkMode/UTSMode to sandbox's dockercontainer.HostConfig.
func modifyHostNetworkOptionForSandbox(hostNetwork bool, hc *dockercontainer.HostConfig) {
	if hostNetwork {
		hc.NetworkMode = namespaceModeHost
	} else {
		// Assume kubelet uses either the cni or the kubenet plugin.
		// TODO: support docker networking.
		hc.NetworkMode = "none"
	}
}

// SetDefaultNetModeIfBlank changes the NetworkMode in a HostConfig structure
// to default if it is not populated. This ensures backwards compatibility after
// the validation of the network mode was moved from the docker CLI to the
// docker daemon.
func SetDefaultNetModeIfBlank(hc *container.HostConfig) *container.HostConfig {
	if hc != nil {
		if hc.NetworkMode == container.NetworkMode("") {
			hc.NetworkMode = container.NetworkMode("default")
		}
	}
	return hc
}

// modifyHostNetworkOptionForContainer applies NetworkMode/UTSMode to container's dockercontainer.HostConfig.
func modifyHostNetworkOptionForContainer(hostNetwork bool, sandboxID string, hc *dockercontainer.HostConfig) {
	sandboxNSMode := fmt.Sprintf("container:%v", sandboxID)
	hc.NetworkMode = dockercontainer.NetworkMode(sandboxNSMode)
	hc.IpcMode = dockercontainer.IpcMode(sandboxNSMode)
	hc.UTSMode = ""
	hc.PidMode = ""

	if hostNetwork {
		hc.UTSMode = namespaceModeHost
	}
}

// modifyHostNetworkOptionForSandbox applies NetworkMode/UTSMode to sandbox's dockercontainer.HostConfig.
func modifyHostNetworkOptionForSandbox(hostNetwork bool, networkPlugin network.NetworkPlugin, hc *dockercontainer.HostConfig) {
	if hostNetwork {
		hc.NetworkMode = namespaceModeHost
		return
	}

	if networkPlugin == nil {
		hc.NetworkMode = "default"
		return
	}

	switch networkPlugin.Name() {
	case "cni":
		fallthrough
	case "kubenet":
		hc.NetworkMode = "none"
	default:
		hc.NetworkMode = "default"
	}
}

func (c *Container) addNetNs(config *container.HostConfig, service project.Service, containers []project.Container) (*container.HostConfig, error) {
	if len(containers) == 0 {
		return nil, fmt.Errorf("Failed to find container for networks ns %v", c.service.Config().Net)
	}

	id, err := containers[0].ID()
	if err != nil {
		return nil, err
	}

	config.NetworkMode = container.NetworkMode("container:" + id)
	return config, nil
}

func addNetNs(config *containertypes.HostConfig, service project.Service, containers []project.Container, networkMode string) (*containertypes.HostConfig, error) {
	if len(containers) == 0 {
		return nil, fmt.Errorf("Failed to find container for networks ns %v", networkMode)
	}

	id, err := containers[0].ID()
	if err != nil {
		return nil, err
	}

	config.NetworkMode = containertypes.NetworkMode("container:" + id)
	return config, nil
}

// createContainer creates a new container using the specified
// options. Per the docker API, the created container is not running
// and must be started explicitly. Note that the passed-in hostConfig
// will be augmented with the necessary settings to use the network
// defined by l.createNetwork().
func createContainer(l *LocalCluster, containerConfig container.Config, hostConfig container.HostConfig, containerName string) (*Container, error) {
	hostConfig.NetworkMode = container.NetworkMode(l.networkID)
	// Disable DNS search under the host machine's domain. This can
	// catch upstream wildcard DNS matching and result in odd behavior.
	hostConfig.DNSSearch = []string{"."}
	resp, err := l.client.ContainerCreate(&containerConfig, &hostConfig, nil, containerName)
	if err != nil {
		return nil, err
	}
	return &Container{
		id:      resp.ID,
		name:    containerName,
		cluster: l,
	}, nil
}

func (c *Container) containerStart(name string, hostConfig *containertypes.HostConfig, bind bool) error {
	var err error

	// Get an API client to the portlayer
	client := c.containerProxy.Client()

	// Look up the container name in the metadata cache to get long ID
	vc := cache.ContainerCache().GetContainer(name)
	if vc == nil {
		return NotFoundError(name)
	}
	id := vc.ContainerID

	// handle legacy hostConfig
	if hostConfig != nil {
		// hostConfig exist for backwards compatibility.  TODO: Figure out which parameters we
		// need to look at in hostConfig
	} else if vc != nil {
		hostConfig = vc.HostConfig
	}

	if vc != nil && hostConfig.NetworkMode.NetworkName() == "" {
		hostConfig.NetworkMode = vc.HostConfig.NetworkMode
	}

	// get a handle to the container
	handle, err := c.Handle(id, name)
	if err != nil {
		return err
	}

	var endpoints []*models.EndpointConfig
	// bind network
	if bind {
		var bindRes *scopes.BindContainerOK
		bindRes, err = client.Scopes.BindContainer(scopes.NewBindContainerParamsWithContext(ctx).WithHandle(handle))
		if err != nil {
			switch err := err.(type) {
			case *scopes.BindContainerNotFound:
				cache.ContainerCache().DeleteContainer(id)
				return NotFoundError(name)
			case *scopes.BindContainerInternalServerError:
				return InternalServerError(err.Payload.Message)
			default:
				return InternalServerError(err.Error())
			}
		}

		handle = bindRes.Payload.Handle
		endpoints = bindRes.Payload.Endpoints

		// unbind in case we fail later
		defer func() {
			if err != nil {
				client.Scopes.UnbindContainer(scopes.NewUnbindContainerParamsWithContext(ctx).WithHandle(handle))
			}
		}()

		// unmap ports that vc needs if they're not being used by previously mapped container
		err = c.cleanupPortBindings(vc)
		if err != nil {
			return err
		}
	}

	// change the state of the container
	// TODO: We need a resolved ID from the name
	var stateChangeRes *containers.StateChangeOK
	stateChangeRes, err = client.Containers.StateChange(containers.NewStateChangeParamsWithContext(ctx).WithHandle(handle).WithState("RUNNING"))
	if err != nil {
		switch err := err.(type) {
		case *containers.StateChangeNotFound:
			cache.ContainerCache().DeleteContainer(id)
			return NotFoundError(name)
		case *containers.StateChangeDefault:
			return InternalServerError(err.Payload.Message)
		default:
			return InternalServerError(err.Error())
		}
	}

	handle = stateChangeRes.Payload

	// map ports
	if bind {
		e := c.findPortBoundNetworkEndpoint(hostConfig, endpoints)
		if err = MapPorts(hostConfig, e, id); err != nil {
			return InternalServerError(fmt.Sprintf("error mapping ports: %s", err))
		}

		defer func() {
			if err != nil {
				UnmapPorts(hostConfig)
			}
		}()
	}

	// commit the handle; this will reconfigure and start the vm
	_, err = client.Containers.Commit(containers.NewCommitParamsWithContext(ctx).WithHandle(handle))
	if err != nil {
//.........这里部分代码省略.........