Golang Job.ExportEnv方法代碼示例

func (srv *Server) ContainerStart(job *engine.Job) string {
	if len(job.Args) < 1 {
		return fmt.Sprintf("Usage: %s container_id", job.Name)
	}
	name := job.Args[0]
	runtime := srv.runtime
	container := runtime.Get(name)

	if container == nil {
		return fmt.Sprintf("No such container: %s", name)
	}
	// If no environment was set, then no hostconfig was passed.
	if len(job.Environ()) > 0 {
		var hostConfig HostConfig
		if err := job.ExportEnv(&hostConfig); err != nil {
			return err.Error()
		}
		// Validate the HostConfig binds. Make sure that:
		// 1) the source of a bind mount isn't /
		//         The bind mount "/:/foo" isn't allowed.
		// 2) Check that the source exists
		//        The source to be bind mounted must exist.
		for _, bind := range hostConfig.Binds {
			splitBind := strings.Split(bind, ":")
			source := splitBind[0]

			// refuse to bind mount "/" to the container
			if source == "/" {
				return fmt.Sprintf("Invalid bind mount '%s' : source can't be '/'", bind)
			}

			// ensure the source exists on the host
			_, err := os.Stat(source)
			if err != nil && os.IsNotExist(err) {
				return fmt.Sprintf("Invalid bind mount '%s' : source doesn't exist", bind)
			}
		}
		// Register any links from the host config before starting the container
		// FIXME: we could just pass the container here, no need to lookup by name again.
		if err := srv.RegisterLinks(name, &hostConfig); err != nil {
			return err.Error()
		}
		container.hostConfig = &hostConfig
		container.ToDisk()
	}
	if err := container.Start(); err != nil {
		return fmt.Sprintf("Cannot start container %s: %s", name, err)
	}
	srv.LogEvent("start", container.ID, runtime.repositories.ImageName(container.Image))

	return "0"
}

func (srv *Server) ContainerCreate(job *engine.Job) string {
	var name string
	if len(job.Args) == 1 {
		name = job.Args[0]
	} else if len(job.Args) > 1 {
		return fmt.Sprintf("Usage: %s ", job.Name)
	}
	var config Config
	if err := job.ExportEnv(&config); err != nil {
		return err.Error()
	}
	if config.Memory != 0 && config.Memory < 524288 {
		return "Minimum memory limit allowed is 512k"
	}
	if config.Memory > 0 && !srv.runtime.capabilities.MemoryLimit {
		config.Memory = 0
	}
	if config.Memory > 0 && !srv.runtime.capabilities.SwapLimit {
		config.MemorySwap = -1
	}
	container, buildWarnings, err := srv.runtime.Create(&config, name)
	if err != nil {
		if srv.runtime.graph.IsNotExist(err) {
			_, tag := utils.ParseRepositoryTag(config.Image)
			if tag == "" {
				tag = DEFAULTTAG
			}
			return fmt.Sprintf("No such image: %s (tag: %s)", config.Image, tag)
		}
		return err.Error()
	}
	srv.LogEvent("create", container.ID, srv.runtime.repositories.ImageName(container.Image))
	// FIXME: this is necessary because runtime.Create might return a nil container
	// with a non-nil error. This should not happen! Once it's fixed we
	// can remove this workaround.
	if container != nil {
		job.Printf("%s\n", container.ID)
	}
	for _, warning := range buildWarnings {
		job.Errorf("%s\n", warning)
	}
	return "0"
}

func (srv *Server) ContainerCreate(job *engine.Job) string {
	var name string
	if len(job.Args) == 1 {
		name = job.Args[0]
	} else if len(job.Args) > 1 {
		return fmt.Sprintf("Usage: %s ", job.Name)
	}
	var config Config
	if err := job.ExportEnv(&config); err != nil {
		return err.Error()
	}
	if config.Memory != 0 && config.Memory < 524288 {
		return "Minimum memory limit allowed is 512k"
	}
	if config.Memory > 0 && !srv.runtime.capabilities.MemoryLimit {
		config.Memory = 0
	}
	if config.Memory > 0 && !srv.runtime.capabilities.SwapLimit {
		config.MemorySwap = -1
	}
	container, buildWarnings, err := srv.runtime.Create(&config, name)
	if err != nil {
		if srv.runtime.graph.IsNotExist(err) {
			_, tag := utils.ParseRepositoryTag(config.Image)
			if tag == "" {
				tag = DEFAULTTAG
			}
			return fmt.Sprintf("No such image: %s (tag: %s)", config.Image, tag)
		}
		return err.Error()
	}
	srv.LogEvent("create", container.ID, srv.runtime.repositories.ImageName(container.Image))
	job.Printf("%s\n", container.ID)
	for _, warning := range buildWarnings {
		job.Errorf("%s\n", warning)
	}
	return "0"
}