Golang DockerCli.RetrieveAuthTokenFromImage方法代碼示例

func runCreate(dockerCli *command.DockerCli, opts *serviceOptions) error {
	apiClient := dockerCli.Client()
	createOpts := types.ServiceCreateOptions{}

	service, err := opts.ToService()
	if err != nil {
		return err
	}

	ctx := context.Background()

	// only send auth if flag was set
	if opts.registryAuth {
		// Retrieve encoded auth token from the image reference
		encodedAuth, err := dockerCli.RetrieveAuthTokenFromImage(ctx, opts.image)
		if err != nil {
			return err
		}
		createOpts.EncodedRegistryAuth = encodedAuth
	}

	response, err := apiClient.ServiceCreate(ctx, service, createOpts)
	if err != nil {
		return err
	}

	fmt.Fprintf(dockerCli.Out(), "%s\n", response.ID)
	return nil
}

func runUpdate(dockerCli *command.DockerCli, flags *pflag.FlagSet, serviceID string) error {
	apiClient := dockerCli.Client()
	ctx := context.Background()
	updateOpts := types.ServiceUpdateOptions{}

	service, _, err := apiClient.ServiceInspectWithRaw(ctx, serviceID)
	if err != nil {
		return err
	}

	err = updateService(flags, &service.Spec)
	if err != nil {
		return err
	}

	// only send auth if flag was set
	sendAuth, err := flags.GetBool(flagRegistryAuth)
	if err != nil {
		return err
	}
	if sendAuth {
		// Retrieve encoded auth token from the image reference
		// This would be the old image if it didn't change in this update
		image := service.Spec.TaskTemplate.ContainerSpec.Image
		encodedAuth, err := dockerCli.RetrieveAuthTokenFromImage(ctx, image)
		if err != nil {
			return err
		}
		updateOpts.EncodedRegistryAuth = encodedAuth
	}

	err = apiClient.ServiceUpdate(ctx, service.ID, service.Version, service.Spec, updateOpts)
	if err != nil {
		return err
	}

	fmt.Fprintf(dockerCli.Out(), "%s\n", serviceID)
	return nil
}

func deployServices(
	ctx context.Context,
	dockerCli *command.DockerCli,
	services map[string]bundlefile.Service,
	namespace string,
	sendAuth bool,
) error {
	apiClient := dockerCli.Client()
	out := dockerCli.Out()

	existingServices, err := getServices(ctx, apiClient, namespace)
	if err != nil {
		return err
	}

	existingServiceMap := make(map[string]swarm.Service)
	for _, service := range existingServices {
		existingServiceMap[service.Spec.Name] = service
	}

	for internalName, service := range services {
		name := fmt.Sprintf("%s_%s", namespace, internalName)

		var ports []swarm.PortConfig
		for _, portSpec := range service.Ports {
			ports = append(ports, swarm.PortConfig{
				Protocol:   swarm.PortConfigProtocol(portSpec.Protocol),
				TargetPort: portSpec.Port,
			})
		}

		serviceSpec := swarm.ServiceSpec{
			Annotations: swarm.Annotations{
				Name:   name,
				Labels: getStackLabels(namespace, service.Labels),
			},
			TaskTemplate: swarm.TaskSpec{
				ContainerSpec: swarm.ContainerSpec{
					Image:   service.Image,
					Command: service.Command,
					Args:    service.Args,
					Env:     service.Env,
					// Service Labels will not be copied to Containers
					// automatically during the deployment so we apply
					// it here.
					Labels: getStackLabels(namespace, nil),
				},
			},
			EndpointSpec: &swarm.EndpointSpec{
				Ports: ports,
			},
			Networks: convertNetworks(service.Networks, namespace, internalName),
		}

		cspec := &serviceSpec.TaskTemplate.ContainerSpec
		if service.WorkingDir != nil {
			cspec.Dir = *service.WorkingDir
		}
		if service.User != nil {
			cspec.User = *service.User
		}

		encodedAuth := ""
		if sendAuth {
			// Retrieve encoded auth token from the image reference
			image := serviceSpec.TaskTemplate.ContainerSpec.Image
			encodedAuth, err = dockerCli.RetrieveAuthTokenFromImage(ctx, image)
			if err != nil {
				return err
			}
		}

		if service, exists := existingServiceMap[name]; exists {
			fmt.Fprintf(out, "Updating service %s (id: %s)\n", name, service.ID)

			updateOpts := types.ServiceUpdateOptions{}
			if sendAuth {
				updateOpts.EncodedRegistryAuth = encodedAuth
			}
			if err := apiClient.ServiceUpdate(
				ctx,
				service.ID,
				service.Version,
				serviceSpec,
				updateOpts,
			); err != nil {
				return err
			}
		} else {
			fmt.Fprintf(out, "Creating service %s\n", name)

			createOpts := types.ServiceCreateOptions{}
			if sendAuth {
				createOpts.EncodedRegistryAuth = encodedAuth
			}
			if _, err := apiClient.ServiceCreate(ctx, serviceSpec, createOpts); err != nil {
				return err
			}
		}
	}
//.........這裏部分代碼省略.........