package distribution import ( "context" digest "github.com/opencontainers/go-digest" ) // TagService provides access to information about tagged objects. type TagService interface { // Get retrieves the descriptor identified by the tag. Some // implementations may differentiate between "trusted" tags and // "untrusted" tags. If a tag is "untrusted", the mapping will be returned // as an ErrTagUntrusted error, with the target descriptor. Get(ctx context.Context, tag string) (Descriptor, error) // Tag associates the tag with the provided descriptor, updating the // current association, if needed. Tag(ctx context.Context, tag string, desc Descriptor) error // Untag removes the given tag association Untag(ctx context.Context, tag string) error // All returns the set of tags managed by this tag service All(ctx context.Context) ([]string, error) // Lookup returns the set of tags referencing the given digest. Lookup(ctx context.Context, digest Descriptor) ([]string, error) } // TagIndexes proves method to retreive all the digests that a tag historically pointed to type TagIndexes interface { // Indexes returns set of digests that this tag historically pointed to. This also includes // currently linked digest. There is no ordering guaranteed Indexes(ctx context.Context, tag string) ([]digest.Digest, error) }