func()

in executors/docker/executor_docker.go [213:253]

• 34 lines of code
• 6 McCabe index (conditional complexity)

func (s *executor) getPrebuiltImage() (*types.ImageInspect, error) {
	architecture := s.getArchitecture()
	if architecture == "" {
		return nil, errors.New("unsupported docker architecture")
	}

	imageName := prebuiltImageName + ":" + architecture + "-" + common.REVISION
	s.Debugln("Looking for prebuilt image", imageName, "...")
	image, _, err := s.client.ImageInspectWithRaw(s.Context, imageName)
	if err == nil {
		return &image, nil
	}

	data, err := Asset("prebuilt-" + architecture + prebuiltImageExtension)
	if err != nil {
		return nil, fmt.Errorf("Unsupported architecture: %s: %q", architecture, err.Error())
	}

	s.Debugln("Loading prebuilt image...")

	ref := prebuiltImageName
	source := types.ImageImportSource{
		Source:     bytes.NewBuffer(data),
		SourceName: "-",
	}
	options := types.ImageImportOptions{
		Tag: architecture + "-" + common.REVISION,
	}

	if err := s.client.ImageImportBlocking(s.Context, source, ref, options); err != nil {
		return nil, fmt.Errorf("Failed to import image: %s", err)
	}

	image, _, err = s.client.ImageInspectWithRaw(s.Context, imageName)
	if err != nil {
		s.Debugln("Inspecting imported image", imageName, "failed:", err)
		return nil, err
	}

	return &image, err
}