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Golang Config.Cgroups方法代码示例

本文整理汇总了Golang中github.com/docker/libcontainer/configs.Config.Cgroups方法的典型用法代码示例。如果您正苦于以下问题:Golang Config.Cgroups方法的具体用法?Golang Config.Cgroups怎么用?Golang Config.Cgroups使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在github.com/docker/libcontainer/configs.Config的用法示例。


在下文中一共展示了Config.Cgroups方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: ReadConfig

// TODO(vmarmol): Deprecate over time as old Dockers are phased out.
func ReadConfig(dockerRoot, dockerRun, containerID string) (*configs.Config, error) {
	// Try using the new config if it is available.
	configPath := configPath(dockerRun, containerID)
	if utils.FileExists(configPath) {
		out, err := ioutil.ReadFile(configPath)
		if err != nil {
			return nil, err
		}

		var state libcontainer.State
		err = json.Unmarshal(out, &state)
		if err != nil {
			glog.Errorf("Unmarshal failure for: \n\n%v\n", string(out))
			return nil, err
		}
		return &state.Config, nil
	}

	// Fallback to reading the old config which is comprised of the state and config files.
	oldConfigPath := oldConfigPath(dockerRoot, containerID)
	out, err := ioutil.ReadFile(oldConfigPath)
	if err != nil {
		glog.Errorf("Unmarshal failure for: \n\n%v\n", string(out))
		return nil, err
	}

	// Try reading the preAPIConfig.
	var config preAPIConfig
	err = json.Unmarshal(out, &config)
	if err != nil {
		// Try to parse the old pre-API config. The main difference is that namespaces used to be a map, now it is a slice of structs.
		// The JSON marshaler will use the non-nested field before the nested one.
		type oldLibcontainerConfig struct {
			preAPIConfig
			OldNamespaces map[string]bool `json:"namespaces,omitempty"`
		}
		var oldConfig oldLibcontainerConfig
		err2 := json.Unmarshal(out, &oldConfig)
		if err2 != nil {
			// Use original error.
			return nil, err
		}

		// Translate the old pre-API config into the new config.
		config = oldConfig.preAPIConfig
		for ns := range oldConfig.OldNamespaces {
			config.Namespaces = append(config.Namespaces, configs.Namespace{
				Type: configs.NamespaceType(ns),
			})
		}
	}

	// Read the old state file as well.
	state, err := readState(dockerRoot, containerID)
	if err != nil {
		return nil, err
	}

	// Convert preAPIConfig + old state file to Config.
	// This only converts some of the fields, the ones we use.
	// You may need to add fields if the one you're interested in is not available.
	var result configs.Config
	result.Cgroups = new(configs.Cgroup)
	result.Rootfs = config.RootFs
	result.Hostname = config.Hostname
	result.Namespaces = config.Namespaces
	result.Capabilities = config.Capabilities
	for _, net := range config.Networks {
		n := &configs.Network{
			Name:              state.NetworkState.VethChild,
			Bridge:            net.Bridge,
			MacAddress:        net.MacAddress,
			Address:           net.Address,
			Gateway:           net.Gateway,
			IPv6Address:       net.IPv6Address,
			IPv6Gateway:       net.IPv6Gateway,
			HostInterfaceName: state.NetworkState.VethHost,
		}
		result.Networks = append(result.Networks, n)
	}
	result.Routes = config.Routes
	if config.Cgroups != nil {
		result.Cgroups = config.Cgroups
	}

	return &result, nil
}
开发者ID:schen59,项目名称:origin,代码行数:88,代码来源:compatibility.go


注:本文中的github.com/docker/libcontainer/configs.Config.Cgroups方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。