godoc'd

Signed-off-by: Michal Minář <[email protected]>

Author: Michal Minář

pkg/dockerregistry/server/catalog.go

@@ -27,12 +27,17 @@ type RepositoryEnumerator interface {
 	EnumerateRepositories(ctx context.Context, repos []string, last string) (n int, err error)
 }
 
+// cachingRepositoryEnumerator is an enumerator that supports chunking by caching associations between
+// repository names and opaque continuation tokens.
 type cachingRepositoryEnumerator struct {
 	client client.RegistryClient
 	// a cache of opaque continue tokens for repository enumeration
 	cache *cache.LRUExpireCache
 }
 
+var _ RepositoryEnumerator = &cachingRepositoryEnumerator{}
+
+// NewCachingRepositoryEnumerator returns a new caching repository enumerator.
 func NewCachingRepositoryEnumerator(client client.RegistryClient, cache *cache.LRUExpireCache) RepositoryEnumerator {
 	return &cachingRepositoryEnumerator{
 		client: client,