Function ResolveReference

storage/storage_reference.go:311–323

ResolveReference finds the underlying storage image for a storage.Transport reference. It returns that image, and an updated reference which can be used to refer back to the _same_ image again. This matters if the input reference contains a tagged name; the destination of the tag can move in local

(ref types.ImageReference)

//
// Returns an error matching ErrNoSuchImage if an image matching ref was not found.
func ResolveReference(ref types.ImageReference) (types.ImageReference, *storage.Image, error) {
	sref, ok := ref.(*storageReference)
	if !ok {
		return nil, nil, fmt.Errorf("trying to resolve a non-%s: reference %q", Transport.Name(),
			transports.ImageName(ref))
	}
	clone := *sref // A shallow copy we can update
	img, err := clone.resolveImage(nil)
	if err != nil {
		return nil, nil, err
	}
	return clone, img, nil
}