Function GetOCIStopSignal

client/signals.go:51–83

GetOCIStopSignal retrieves the stop signal specified in the OCI image config

(ctx context.Context, image Image, defaultSignal string)

// GetOCIStopSignal retrieves the stop signal specified in the OCI image config
func GetOCIStopSignal(ctx context.Context, image Image, defaultSignal string) (string, error) {
	_, err := signal.ParseSignal(defaultSignal)
	if err != nil {
		return "", err
	}
	ic, err := image.Config(ctx)
	if err != nil {
		return "", err
	}
	if !images.IsConfigType(ic.MediaType) {
		return "", fmt.Errorf("unknown image config media type %s", ic.MediaType)
	}

	var (
		ociimage v1.Image
		config   v1.ImageConfig
	)
	p, err := content.ReadBlob(ctx, image.ContentStore(), ic)
	if err != nil {
		return "", err
	}

	if err = json.Unmarshal(p, &ociimage); err != nil {
		return "", err
	}
	config = ociimage.Config

	if config.StopSignal == "" {
		return defaultSignal, nil
	}

	return config.StopSignal, nil
}