Golang hcsshim.CreateContainer函數代碼示例

//.........這裏部分代碼省略.........
	if layerOpt == nil || layerOpt.LayerPaths == nil {
		return fmt.Errorf("no layer option or paths were supplied to the runtime")
	}

	if configuration.HvPartition {
		// Find the upper-most utility VM image, since the utility VM does not
		// use layering in RS1.
		// TODO @swernli/jhowardmsft at some point post RS1 this may be re-locatable.
		var uvmImagePath string
		for _, path := range layerOpt.LayerPaths {
			fullPath := filepath.Join(path, "UtilityVM")
			_, err := os.Stat(fullPath)
			if err == nil {
				uvmImagePath = fullPath
				break
			}
			if !os.IsNotExist(err) {
				return err
			}
		}
		if uvmImagePath == "" {
			return errors.New("utility VM image could not be found")
		}
		configuration.HvRuntime = &hcsshim.HvRuntime{ImagePath: uvmImagePath}
	} else {
		configuration.VolumePath = spec.Root.Path
	}

	configuration.LayerFolderPath = layerOpt.LayerFolderPath

	for _, layerPath := range layerOpt.LayerPaths {
		_, filename := filepath.Split(layerPath)
		g, err := hcsshim.NameToGuid(filename)
		if err != nil {
			return err
		}
		configuration.Layers = append(configuration.Layers, hcsshim.Layer{
			ID:   g.ToString(),
			Path: layerPath,
		})
	}

	// Add the mounts (volumes, bind mounts etc) to the structure
	mds := make([]hcsshim.MappedDir, len(spec.Mounts))
	for i, mount := range spec.Mounts {
		mds[i] = hcsshim.MappedDir{
			HostPath:      mount.Source,
			ContainerPath: mount.Destination,
			ReadOnly:      false,
		}
		for _, o := range mount.Options {
			if strings.ToLower(o) == "ro" {
				mds[i].ReadOnly = true
			}
		}
	}
	configuration.MappedDirectories = mds

	hcsContainer, err := hcsshim.CreateContainer(containerID, configuration)
	if err != nil {
		return err
	}

	// Construct a container object for calling start on it.
	container := &container{
		containerCommon: containerCommon{
			process: process{
				processCommon: processCommon{
					containerID:  containerID,
					client:       clnt,
					friendlyName: InitFriendlyName,
				},
				commandLine: strings.Join(spec.Process.Args, " "),
			},
			processes: make(map[string]*process),
		},
		ociSpec:      spec,
		hcsContainer: hcsContainer,
	}

	container.options = options
	for _, option := range options {
		if err := option.Apply(container); err != nil {
			logrus.Errorf("libcontainerd: %v", err)
		}
	}

	// Call start, and if it fails, delete the container from our
	// internal structure, start will keep HCS in sync by deleting the
	// container there.
	logrus.Debugf("libcontainerd: Create() id=%s, Calling start()", containerID)
	if err := container.start(); err != nil {
		clnt.deleteContainer(containerID)
		return err
	}

	logrus.Debugf("libcontainerd: Create() id=%s completed successfully", containerID)
	return nil

}

func main() {
	if len(os.Args) != 2 {
		fmt.Print(`
This sample create a new container runs ping and then destroys the container.
		
Usage:
  sample.exe <base container Id>

To get the base container id for "microsoft/windowsservercore" use the following PS snippet:
  Split-Path -Leaf (docker inspect microsoft/windowsservercore  | ConvertFrom-Json).GraphDriver.Data.Dir

`)
		os.Exit(1)
	}

	windowsbaseId := os.Args[1]

	di := hcsshim.DriverInfo{
		HomeDir: homeDir,
		Flavour: filterDriver,
	}

	imgData, err := hcsshim.GetSharedBaseImages()
	panicIf(err)
	fmt.Println(imgData)

	hcsNets, err := hcsshim.HNSListNetworkRequest("GET", "", "")
	panicIf(err)
	fmt.Println(hcsNets)

	virtualNetworkId := ""
	for _, n := range hcsNets {
		if n.Name == "nat" {
			virtualNetworkId = n.Id
		}
	}

	// https://github.com/docker/libnetwork/blob/f9a1590164b878e668eabf889dd79fb6af8eaced/drivers/windows/windows.go#L284
	endpointRequest := hcsshim.HNSEndpoint{
		VirtualNetwork: virtualNetworkId,
	}
	endpointRequestJson, err := json.Marshal(endpointRequest)
	panicIf(err)

	endpoint, err := hcsshim.HNSEndpointRequest("POST", "", string(endpointRequestJson))
	panicIf(err)
	fmt.Println(*endpoint)

	windowsservercorePath, err := hcsshim.GetLayerMountPath(di, windowsbaseId)
	panicIf(err)
	fmt.Println(windowsservercorePath)

	layerChain, err := GetLayerChain(windowsservercorePath)
	panicIf(err)
	fmt.Println(layerChain)

	newContainerId := stringid.GenerateNonCryptoID()

	layerFolderPath, volumeMountPath, err := CreateAndActivateContainerLayer(di, newContainerId, windowsservercorePath)
	panicIf(err)

	containerConfig := hcsshim.ContainerConfig{
		SystemType:              "Container",
		Name:                    newContainerId,
		Owner:                   "Garden",
		LayerFolderPath:         layerFolderPath,
		VolumePath:              volumeMountPath,
		IgnoreFlushesDuringBoot: true,
		EndpointList:            []string{endpoint.Id},
	}

	// https://github.com/docker/docker/blob/cf58eb437c4229e876f2d952a228b603a074e584/libcontainerd/client_windows.go#L111-L121
	for _, layerPath := range layerChain {
		id, err := hcsshim.NameToGuid(GetLayerId(layerPath))
		panicIf(err)

		containerConfig.Layers = append(containerConfig.Layers, hcsshim.Layer{
			Path: layerPath,
			ID:   id.ToString(),
		})
	}

	c, err := hcsshim.CreateContainer(newContainerId, &containerConfig)
	panicIf(err)
	fmt.Println(c)

	err = c.Start()
	panicIf(err)

	stats, err := c.Statistics()
	panicIf(err)
	fmt.Println(stats)

	processConfig := hcsshim.ProcessConfig{
		CommandLine:      "ping 127.0.0.1",
		WorkingDirectory: "C:\\",
		//CreateStdErrPipe: true,
		//CreateStdInPipe:  true,
		//CreateStdOutPipe: true,
	}
//.........這裏部分代碼省略.........

// Create is the entrypoint to create a container from a spec, and if successfully
// created, start it too.
func (clnt *client) Create(containerID string, spec Spec, options ...CreateOption) error {
	logrus.Debugln("libcontainerd: client.Create() with spec", spec)

	configuration := &hcsshim.ContainerConfig{
		SystemType: "Container",
		Name:       containerID,
		Owner:      defaultOwner,

		VolumePath:              spec.Root.Path,
		IgnoreFlushesDuringBoot: spec.Windows.FirstStart,
		LayerFolderPath:         spec.Windows.LayerFolder,
		HostName:                spec.Hostname,
	}

	if spec.Windows.Networking != nil {
		configuration.EndpointList = spec.Windows.Networking.EndpointList
	}

	if spec.Windows.Resources != nil {
		if spec.Windows.Resources.CPU != nil {
			if spec.Windows.Resources.CPU.Shares != nil {
				configuration.ProcessorWeight = *spec.Windows.Resources.CPU.Shares
			}
			if spec.Windows.Resources.CPU.Percent != nil {
				configuration.ProcessorMaximum = *spec.Windows.Resources.CPU.Percent * 100 // ProcessorMaximum is a value between 1 and 10000
			}
		}
		if spec.Windows.Resources.Memory != nil {
			if spec.Windows.Resources.Memory.Limit != nil {
				configuration.MemoryMaximumInMB = *spec.Windows.Resources.Memory.Limit / 1024 / 1024
			}
		}
		if spec.Windows.Resources.Storage != nil {
			if spec.Windows.Resources.Storage.Bps != nil {
				configuration.StorageBandwidthMaximum = *spec.Windows.Resources.Storage.Bps
			}
			if spec.Windows.Resources.Storage.Iops != nil {
				configuration.StorageIOPSMaximum = *spec.Windows.Resources.Storage.Iops
			}
		}
	}

	if spec.Windows.HvRuntime != nil {
		configuration.VolumePath = "" // Always empty for Hyper-V containers
		configuration.HvPartition = true
		configuration.HvRuntime = &hcsshim.HvRuntime{
			ImagePath: spec.Windows.HvRuntime.ImagePath,
		}

		// Images with build version < 14350 don't support running with clone, but
		// Windows cannot automatically detect this. Explicitly block cloning in this
		// case.
		if build := buildFromVersion(spec.Platform.OSVersion); build > 0 && build < 14350 {
			configuration.HvRuntime.SkipTemplate = true
		}
	}

	if configuration.HvPartition {
		configuration.SandboxPath = filepath.Dir(spec.Windows.LayerFolder)
	} else {
		configuration.VolumePath = spec.Root.Path
		configuration.LayerFolderPath = spec.Windows.LayerFolder
	}

	for _, option := range options {
		if s, ok := option.(*ServicingOption); ok {
			configuration.Servicing = s.IsServicing
			break
		}
	}

	for _, layerPath := range spec.Windows.LayerPaths {
		_, filename := filepath.Split(layerPath)
		g, err := hcsshim.NameToGuid(filename)
		if err != nil {
			return err
		}
		configuration.Layers = append(configuration.Layers, hcsshim.Layer{
			ID:   g.ToString(),
			Path: layerPath,
		})
	}

	// Add the mounts (volumes, bind mounts etc) to the structure
	mds := make([]hcsshim.MappedDir, len(spec.Mounts))
	for i, mount := range spec.Mounts {
		mds[i] = hcsshim.MappedDir{
			HostPath:      mount.Source,
			ContainerPath: mount.Destination,
			ReadOnly:      mount.Readonly}
	}
	configuration.MappedDirectories = mds

	hcsContainer, err := hcsshim.CreateContainer(containerID, configuration)
	if err != nil {
		return err
	}

//.........這裏部分代碼省略.........