Method attach

pkg/compose/attach.go:36–64

(ctx context.Context, project *types.Project, listener api.ContainerEventListener, selectedServices []string)

)

func (s *composeService) attach(ctx context.Context, project *types.Project, listener api.ContainerEventListener, selectedServices []string) (Containers, error) {
	containers, err := s.getContainers(ctx, project.Name, oneOffExclude, true, selectedServices...)
	if err != nil {
		return nil, err
	}
	if len(containers) == 0 {
		return containers, nil
	}

	containers.sorted() // This enforces predictable colors assignment

	var names []string
	for _, c := range containers {
		names = append(names, getContainerNameWithoutProject(c))
	}

	_, err = fmt.Fprintf(s.stdout(), "Attaching to %s\n", strings.Join(names, ", "))
	if err != nil {
		logrus.Debugf("failed to write attach message: %v", err)
	}

	for _, ctr := range containers {
		err := s.attachContainer(ctx, ctr, listener)
		if err != nil {
			return nil, err
		}
	}
	return containers, nil
}

func (s *composeService) attachContainer(ctx context.Context, container containerType.Summary, listener api.ContainerEventListener) error {
	service := container.Labels[api.ServiceLabel]