Repository endpoint tags pagination (#3238)

* endpoint/api/repository: limit the number of tags returned

- Limit the number of tags returned by /api/v1/repository/<ns:repo> to 500.
- Uses the tag history endpoint instead, with an active tag filte.
- Update UI to use tag history endpoint instead.

endpoints/api/repository_models_pre_oci.py

@@ -134,7 +134,7 @@ class PreOCIModel(RepositoryDataInterface):
                                               repo_kind=repo_kind, description=description)
     return Repository(namespace_name, repository_name)
 
-  def get_repo(self, namespace_name, repository_name, user):
+  def get_repo(self, namespace_name, repository_name, user, include_tags=True, max_tags=500):
     repo = model.repository.get_repository(namespace_name, repository_name)
     if repo is None:
       return None
@@ -156,18 +156,22 @@ class PreOCIModel(RepositoryDataInterface):
           for release in releases
         ])
 
+    tags = None
     repo_ref = RepositoryReference.for_repo_obj(repo)
-    tags = registry_model.list_repository_tags(repo_ref, include_legacy_images=True)
+    if include_tags:
+      tags, _ = registry_model.list_repository_tag_history(repo_ref, page=1, size=max_tags, active_tags_only=True)
+      tags = [
+        Tag(tag.name, tag.legacy_image.docker_image_id, tag.legacy_image.aggregate_size,
+          tag.lifetime_start_ts,
+          tag.manifest_digest,
+          tag.lifetime_end_ts) for tag in tags
+      ]
 
     start_date = datetime.now() - timedelta(days=MAX_DAYS_IN_3_MONTHS)
     counts = model.log.get_repository_action_counts(repo, start_date)
 
-    return ImageRepositoryRepository(base, [
-      Tag(tag.name, tag.legacy_image.docker_image_id, tag.legacy_image.aggregate_size,
-          tag.lifetime_start_ts,
-          tag.manifest_digest,
-          tag.lifetime_end_ts) for tag in tags
-    ], [Count(count.date, count.count) for count in counts], repo.badge_token, repo.trust_enabled)
+    return ImageRepositoryRepository(base, tags,
+      [Count(count.date, count.count) for count in counts], repo.badge_token, repo.trust_enabled)
 
 
 pre_oci_model = PreOCIModel()