Golang container.Lock函數代碼示例

// containerInspect120 serializes the master version of a container into a json type.
func (daemon *Daemon) containerInspect120(name string) (*v1p20.ContainerJSON, error) {
	container, err := daemon.GetContainer(name)
	if err != nil {
		return nil, err
	}

	container.Lock()
	defer container.Unlock()

	base, err := daemon.getInspectData(container, false)
	if err != nil {
		return nil, err
	}

	mountPoints := addMountPoints(container)
	config := &v1p20.ContainerConfig{
		Config:          container.Config,
		MacAddress:      container.Config.MacAddress,
		NetworkDisabled: container.Config.NetworkDisabled,
		ExposedPorts:    container.Config.ExposedPorts,
		VolumeDriver:    container.HostConfig.VolumeDriver,
	}
	networkSettings := daemon.getBackwardsCompatibleNetworkSettings(container.NetworkSettings)

	return &v1p20.ContainerJSON{
		ContainerJSONBase: base,
		Mounts:            mountPoints,
		Config:            config,
		NetworkSettings:   networkSettings,
	}, nil
}

// ContainerStart starts a container.
func (daemon *Daemon) ContainerStart(name string, hostConfig *runconfig.HostConfig) error {
	container, err := daemon.Get(name)
	if err != nil {
		return err
	}

	if container.IsPaused() {
		return derr.ErrorCodeStartPaused
	}

	if container.IsRunning() {
		return derr.ErrorCodeAlreadyStarted
	}

	// Windows does not have the backwards compatibility issue here.
	if runtime.GOOS != "windows" {
		// This is kept for backward compatibility - hostconfig should be passed when
		// creating a container, not during start.
		if hostConfig != nil {
			logrus.Warn("DEPRECATED: Setting host configuration options when the container starts is deprecated and will be removed in Docker 1.12")
			container.Lock()
			if err := parseSecurityOpt(container, hostConfig); err != nil {
				container.Unlock()
				return err
			}
			container.Unlock()
			if err := daemon.adaptContainerSettings(hostConfig, false); err != nil {
				return err
			}
			if err := daemon.setHostConfig(container, hostConfig); err != nil {
				return err
			}
			container.InitDNSHostConfig()
		}
	} else {
		if hostConfig != nil {
			return derr.ErrorCodeHostConfigStart
		}
	}

	// check if hostConfig is in line with the current system settings.
	// It may happen cgroups are umounted or the like.
	if _, err = daemon.verifyContainerSettings(container.HostConfig, nil); err != nil {
		return err
	}

	if err := daemon.containerStart(container); err != nil {
		return err
	}

	return nil
}

// ContainerInspectCurrent returns low-level information about a
// container in a most recent api version.
func (daemon *Daemon) ContainerInspectCurrent(name string, size bool) (*types.ContainerJSON, error) {
	container, err := daemon.GetContainer(name)
	if err != nil {
		return nil, err
	}

	container.Lock()
	defer container.Unlock()

	base, err := daemon.getInspectData(container, size)
	if err != nil {
		return nil, err
	}

	apiNetworks := make(map[string]*networktypes.EndpointSettings)
	for name, epConf := range container.NetworkSettings.Networks {
		if epConf.EndpointSettings != nil {
			apiNetworks[name] = epConf.EndpointSettings
		}
	}

	mountPoints := addMountPoints(container)
	networkSettings := &types.NetworkSettings{
		NetworkSettingsBase: types.NetworkSettingsBase{
			Bridge:                 container.NetworkSettings.Bridge,
			SandboxID:              container.NetworkSettings.SandboxID,
			HairpinMode:            container.NetworkSettings.HairpinMode,
			LinkLocalIPv6Address:   container.NetworkSettings.LinkLocalIPv6Address,
			LinkLocalIPv6PrefixLen: container.NetworkSettings.LinkLocalIPv6PrefixLen,
			Ports:                  container.NetworkSettings.Ports,
			SandboxKey:             container.NetworkSettings.SandboxKey,
			SecondaryIPAddresses:   container.NetworkSettings.SecondaryIPAddresses,
			SecondaryIPv6Addresses: container.NetworkSettings.SecondaryIPv6Addresses,
		},
		DefaultNetworkSettings: daemon.getDefaultNetworkSettings(container.NetworkSettings.Networks),
		Networks:               apiNetworks,
	}

	return &types.ContainerJSON{
		ContainerJSONBase: base,
		Mounts:            mountPoints,
		Config:            container.Config,
		NetworkSettings:   networkSettings,
	}, nil
}

// containerInspectPre120 gets containers for pre 1.20 APIs.
func (daemon *Daemon) containerInspectPre120(name string) (*v1p19.ContainerJSON, error) {
	container, err := daemon.GetContainer(name)
	if err != nil {
		return nil, err
	}

	container.Lock()
	defer container.Unlock()

	base, err := daemon.getInspectData(container, false)
	if err != nil {
		return nil, err
	}

	volumes := make(map[string]string)
	volumesRW := make(map[string]bool)
	for _, m := range container.MountPoints {
		volumes[m.Destination] = m.Path()
		volumesRW[m.Destination] = m.RW
	}

	config := &v1p19.ContainerConfig{
		Config:          container.Config,
		MacAddress:      container.Config.MacAddress,
		NetworkDisabled: container.Config.NetworkDisabled,
		ExposedPorts:    container.Config.ExposedPorts,
		VolumeDriver:    container.HostConfig.VolumeDriver,
		Memory:          container.HostConfig.Memory,
		MemorySwap:      container.HostConfig.MemorySwap,
		CPUShares:       container.HostConfig.CPUShares,
		CPUSet:          container.HostConfig.CpusetCpus,
	}
	networkSettings := daemon.getBackwardsCompatibleNetworkSettings(container.NetworkSettings)

	return &v1p19.ContainerJSON{
		ContainerJSONBase: base,
		Volumes:           volumes,
		VolumesRW:         volumesRW,
		Config:            config,
		NetworkSettings:   networkSettings,
	}, nil
}