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Optimize the list active tags query

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Some customers are hitting this endpoint rapidly for repositories with many, many tags. This change drops the unnecessary joins, which should reduce database load somewhat.
This commit is contained in:
Joseph Schorr 2019-01-14 13:34:25 -05:00
parent defd4b3b20
commit fe45797490
2 changed files with 20 additions and 12 deletions
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8
data/registry_model/registry_pre_oci_model.py
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@ -271,9 +271,11 @@ class PreOCIModel(SharedModel, RegistryDataInterface):
operation on repositories with a lot of tags, and should be avoided for more targetted
operations wherever possible.
"""
# NOTE: include_legacy_images isn't used here because `list_active_repo_tags` includes the
# information already, so we might as well just use it. However, the new model classes will
# *not* include it by default, so we make it a parameter now.
if not include_legacy_images:
tags = model.tag.list_active_repo_tags(repository_ref._db_id, start_pagination_id, limit,
include_images=False)
return [Tag.for_repository_tag(tag) for tag in tags]
tags = model.tag.list_active_repo_tags(repository_ref._db_id, start_pagination_id, limit)
return [Tag.for_repository_tag(tag,
legacy_image=LegacyImage.for_image(tag.image),