Golang App.GetMemory方法代碼示例

func (s *ServiceRuntime) Start(env, pool string, appCfg config.App) (*docker.Container, error) {

	img := appCfg.Version()

	imgIdRef := appCfg.Version()
	if appCfg.VersionID() != "" {
		imgIdRef = appCfg.VersionID()
	}
	// see if we have the image locally
	image, err := s.PullImage(img, imgIdRef)
	if err != nil {
		return nil, err
	}

	// setup env vars from etcd
	var envVars []string
	envVars = append(envVars, "ENV"+"="+env)

	for key, value := range appCfg.Env() {
		if key == "ENV" {
			continue
		}
		envVars = append(envVars, strings.ToUpper(key)+"="+s.replaceVarEnv(value, s.hostIP))
	}

	instanceId, err := s.NextInstanceSlot(appCfg.Name(), strconv.FormatInt(appCfg.ID(), 10))
	if err != nil {
		return nil, err
	}

	envVars = append(envVars, fmt.Sprintf("HOST_IP=%s", s.hostIP))
	envVars = append(envVars, fmt.Sprintf("GALAXY_APP=%s", appCfg.Name()))
	envVars = append(envVars, fmt.Sprintf("GALAXY_VERSION=%s", strconv.FormatInt(appCfg.ID(), 10)))
	envVars = append(envVars, fmt.Sprintf("GALAXY_INSTANCE=%s", strconv.FormatInt(int64(instanceId), 10)))

	publicDns, err := EC2PublicHostname()
	if err != nil {
		log.Warnf("Unable to determine public hostname. Not on AWS? %s", err)
		publicDns = "127.0.0.1"
	}
	envVars = append(envVars, fmt.Sprintf("PUBLIC_HOSTNAME=%s", publicDns))

	containerName := appCfg.ContainerName() + "." + strconv.FormatInt(int64(instanceId), 10)
	container, err := s.dockerClient.InspectContainer(containerName)
	_, ok := err.(*docker.NoSuchContainer)
	if err != nil && !ok {
		return nil, err
	}

	// Existing container is running or stopped.  If the image has changed, stop
	// and re-create it.
	if container != nil && container.Image != image.ID {
		if container.State.Running || container.State.Restarting || container.State.Paused {
			log.Printf("Stopping %s version %s running as %s", appCfg.Name(), appCfg.Version(), container.ID[0:12])
			err := s.dockerClient.StopContainer(container.ID, 10)
			if err != nil {
				return nil, err
			}
		}

		log.Printf("Removing %s version %s running as %s", appCfg.Name(), appCfg.Version(), container.ID[0:12])
		err = s.dockerClient.RemoveContainer(docker.RemoveContainerOptions{
			ID: container.ID,
		})
		if err != nil {
			return nil, err
		}
		container = nil
	}

	if container == nil {

		config := &docker.Config{
			Image: img,
			Env:   envVars,
		}

		mem := appCfg.GetMemory(pool)
		if mem != "" {
			m, err := utils.ParseMemory(mem)
			if err != nil {
				return nil, err
			}
			config.Memory = m
		}

		cpu := appCfg.GetCPUShares(pool)
		if cpu != "" {
			if c, err := strconv.Atoi(cpu); err == nil {
				config.CPUShares = int64(c)
			}
		}

		log.Printf("Creating %s version %s", appCfg.Name(), appCfg.Version())
		container, err = s.dockerClient.CreateContainer(docker.CreateContainerOptions{
			Name:   containerName,
			Config: config,
		})
		if err != nil {
			return nil, err
//.........這裏部分代碼省略.........

func (s *ServiceRuntime) StartInteractive(env, pool string, appCfg config.App) error {

	// see if we have the image locally
	fmt.Fprintf(os.Stderr, "Pulling latest image for %s\n", appCfg.Version())
	_, err := s.PullImage(appCfg.Version(), appCfg.VersionID())
	if err != nil {
		return err
	}

	args := []string{
		"run", "--rm", "-i",
	}
	args = append(args, "-e")
	args = append(args, "ENV"+"="+env)

	for key, value := range appCfg.Env() {
		if key == "ENV" {
			continue
		}

		args = append(args, "-e")
		args = append(args, strings.ToUpper(key)+"="+s.replaceVarEnv(value, s.hostIP))
	}

	args = append(args, "-e")
	args = append(args, fmt.Sprintf("HOST_IP=%s", s.hostIP))
	if s.dns != "" {
		args = append(args, "--dns")
		args = append(args, s.dns)
	}
	args = append(args, "-e")
	args = append(args, fmt.Sprintf("GALAXY_APP=%s", appCfg.Name()))
	args = append(args, "-e")
	args = append(args, fmt.Sprintf("GALAXY_VERSION=%s", strconv.FormatInt(appCfg.ID(), 10)))

	instanceId, err := s.NextInstanceSlot(appCfg.Name(), strconv.FormatInt(appCfg.ID(), 10))
	if err != nil {
		return err
	}
	args = append(args, "-e")
	args = append(args, fmt.Sprintf("GALAXY_INSTANCE=%s", strconv.FormatInt(int64(instanceId), 10)))

	publicDns, err := EC2PublicHostname()
	if err != nil {
		log.Warnf("Unable to determine public hostname. Not on AWS? %s", err)
		publicDns = "127.0.0.1"
	}

	args = append(args, "-e")
	args = append(args, fmt.Sprintf("PUBLIC_HOSTNAME=%s", publicDns))

	mem := appCfg.GetMemory(pool)
	if mem != "" {
		args = append(args, "-m")
		args = append(args, mem)
	}

	cpu := appCfg.GetCPUShares(pool)
	if cpu != "" {
		args = append(args, "-c")
		args = append(args, cpu)
	}

	args = append(args, []string{"-t", appCfg.Version(), "/bin/bash"}...)
	// shell out to docker run to get signal forwarded and terminal setup correctly
	//cmd := exec.Command("docker", "run", "-rm", "-i", "-t", appCfg.Version(), "/bin/bash")
	cmd := exec.Command("docker", args...)

	cmd.Stdin = os.Stdin
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	err = cmd.Start()
	if err != nil {
		log.Fatal(err)
	}

	err = cmd.Wait()
	if err != nil {
		fmt.Fprintf(os.Stderr, "Command finished with error: %v\n", err)
	}

	return err
}