289 lines
12 KiB
Python
289 lines
12 KiB
Python
# pylint: disable=protected-access
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from collections import defaultdict
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from data import database
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from data import model
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from data.registry_model.interface import RegistryDataInterface
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from data.registry_model.datatypes import (Tag, RepositoryReference, Manifest, LegacyImage, Label,
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SecurityScanStatus)
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class PreOCIModel(RegistryDataInterface):
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"""
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PreOCIModel implements the data model for the registry API using a database schema
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before it was changed to support the OCI specification.
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"""
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def find_matching_tag(self, repository_ref, tag_names):
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""" Finds an alive tag in the repository matching one of the given tag names and returns it
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or None if none.
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"""
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found_tag = model.tag.find_matching_tag(repository_ref._db_id, tag_names)
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return Tag.for_repository_tag(found_tag)
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def get_most_recent_tag(self, repository_ref):
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""" Returns the most recently pushed alive tag in the repository, if any. If none, returns
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None.
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"""
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found_tag = model.tag.get_most_recent_tag(repository_ref._db_id)
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return Tag.for_repository_tag(found_tag)
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def lookup_repository(self, namespace_name, repo_name, kind_filter=None):
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""" Looks up and returns a reference to the repository with the given namespace and name,
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or None if none. """
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repo = model.repository.get_repository(namespace_name, repo_name, kind_filter=kind_filter)
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return RepositoryReference.for_repo_obj(repo)
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def get_manifest_for_tag(self, tag):
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""" Returns the manifest associated with the given tag. """
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try:
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tag_manifest = database.TagManifest.get(tag_id=tag._db_id)
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except database.TagManifest.DoesNotExist:
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return
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return Manifest.for_tag_manifest(tag_manifest)
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def lookup_manifest_by_digest(self, repository_ref, manifest_digest, allow_dead=False,
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include_legacy_image=False):
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""" Looks up the manifest with the given digest under the given repository and returns it
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or None if none. """
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repo = model.repository.lookup_repository(repository_ref._db_id)
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if repo is None:
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return None
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try:
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tag_manifest = model.tag.load_manifest_by_digest(repo.namespace_user.username,
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repo.name,
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manifest_digest,
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allow_dead=allow_dead)
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except model.tag.InvalidManifestException:
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return None
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legacy_image = None
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if include_legacy_image:
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legacy_image = self.get_legacy_image(repository_ref, tag_manifest.tag.image.docker_image_id,
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include_parents=True)
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return Manifest.for_tag_manifest(tag_manifest, legacy_image)
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def get_legacy_images(self, repository_ref):
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"""
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Returns an iterator of all the LegacyImage's defined in the matching repository.
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"""
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repo = model.repository.lookup_repository(repository_ref._db_id)
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if repo is None:
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return None
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all_images = model.image.get_repository_images_without_placements(repo)
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all_images_map = {image.id: image for image in all_images}
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all_tags = model.tag.list_repository_tags(repo.namespace_user.username, repo.name)
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tags_by_image_id = defaultdict(list)
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for tag in all_tags:
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tags_by_image_id[tag.image_id].append(tag)
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return [LegacyImage.for_image(image, images_map=all_images_map, tags_map=tags_by_image_id)
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for image in all_images]
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def get_legacy_image(self, repository_ref, docker_image_id, include_parents=False):
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"""
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Returns the matching LegacyImages under the matching repository, if any. If none,
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returns None.
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"""
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repo = model.repository.lookup_repository(repository_ref._db_id)
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if repo is None:
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return None
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image = model.image.get_image(repository_ref._db_id, docker_image_id)
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if image is None:
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return None
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parent_images_map = None
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if include_parents:
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parent_images = model.image.get_parent_images(repo.namespace_user.username, repo.name, image)
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parent_images_map = {image.id: image for image in parent_images}
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return LegacyImage.for_image(image, images_map=parent_images_map)
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def create_manifest_label(self, manifest, key, value, source_type_name, media_type_name=None):
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""" Creates a label on the manifest with the given key and value. """
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try:
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tag_manifest = database.TagManifest.get(id=manifest._db_id)
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except database.TagManifest.DoesNotExist:
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return None
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label = model.label.create_manifest_label(tag_manifest, key, value, source_type_name,
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media_type_name)
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return Label.for_label(label)
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def list_manifest_labels(self, manifest, key_prefix=None):
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""" Returns all labels found on the manifest. If specified, the key_prefix will filter the
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labels returned to those keys that start with the given prefix.
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"""
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labels = model.label.list_manifest_labels(manifest._db_id, prefix_filter=key_prefix)
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return [Label.for_label(l) for l in labels]
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def get_manifest_label(self, manifest, label_uuid):
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""" Returns the label with the specified UUID on the manifest or None if none. """
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return Label.for_label(model.label.get_manifest_label(label_uuid, manifest._db_id))
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def delete_manifest_label(self, manifest, label_uuid):
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""" Delete the label with the specified UUID on the manifest. Returns the label deleted
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or None if none.
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"""
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return Label.for_label(model.label.delete_manifest_label(label_uuid, manifest._db_id))
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def list_repository_tags(self, repository_ref, include_legacy_images=False):
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"""
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Returns a list of all the active tags in the repository. Note that this can be a *heavy*
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operation on repositories with a lot of tags, and should be avoided for more targetted
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operations wherever possible.
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"""
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# NOTE: include_legacy_images isn't used here because `list_active_repo_tags` includes the
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# information already, so we might as well just use it. However, the new model classes will
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# *not* include it by default, so we make it a parameter now.
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tags = model.tag.list_active_repo_tags(repository_ref._db_id)
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return [Tag.for_repository_tag(tag,
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legacy_image=LegacyImage.for_image(tag.image),
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manifest_digest=(tag.tagmanifest.digest
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if hasattr(tag, 'tagmanifest')
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else None))
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for tag in tags]
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def list_repository_tag_history(self, repository_ref, page=1, size=100, specific_tag_name=None):
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"""
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Returns the history of all tags in the repository (unless filtered). This includes tags that
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have been made in-active due to newer versions of those tags coming into service.
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"""
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tags, manifest_map, has_more = model.tag.list_repository_tag_history(repository_ref._db_id,
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page, size,
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specific_tag_name)
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return [Tag.for_repository_tag(tag, manifest_map.get(tag.id),
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legacy_image=LegacyImage.for_image(tag.image))
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for tag in tags], has_more
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def get_repo_tag(self, repository_ref, tag_name, include_legacy_image=False):
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"""
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Returns the latest, *active* tag found in the repository, with the matching name
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or None if none.
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"""
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tag = model.tag.get_active_tag_for_repo(repository_ref._db_id, tag_name)
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if tag is None:
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return None
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legacy_image = LegacyImage.for_image(tag.image) if include_legacy_image else None
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tag_manifest = model.tag.get_tag_manifest(tag)
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manifest_digest = tag_manifest.digest if tag_manifest else None
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return Tag.for_repository_tag(tag, legacy_image=legacy_image, manifest_digest=manifest_digest)
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def retarget_tag(self, repository_ref, tag_name, manifest_or_legacy_image,
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is_reversion=False):
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"""
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Creates, updates or moves a tag to a new entry in history, pointing to the manifest or
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legacy image specified. If is_reversion is set to True, this operation is considered a
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reversion over a previous tag move operation. Returns the updated Tag or None on error.
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"""
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# TODO: unify this.
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if not is_reversion:
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if isinstance(manifest_or_legacy_image, Manifest):
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raise NotImplementedError('Not yet implemented')
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else:
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model.tag.create_or_update_tag_for_repo(repository_ref._db_id, tag_name,
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manifest_or_legacy_image.docker_image_id)
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else:
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if isinstance(manifest_or_legacy_image, Manifest):
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model.tag.restore_tag_to_manifest(repository_ref._db_id, tag_name,
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manifest_or_legacy_image.digest)
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else:
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model.tag.restore_tag_to_image(repository_ref._db_id, tag_name,
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manifest_or_legacy_image.docker_image_id)
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return self.get_repo_tag(repository_ref, tag_name, include_legacy_image=True)
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def delete_tag(self, repository_ref, tag_name):
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"""
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Deletes the latest, *active* tag with the given name in the repository.
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"""
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repo = model.repository.lookup_repository(repository_ref._db_id)
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if repo is None:
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return None
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deleted_tag = model.tag.delete_tag(repo.namespace_user.username, repo.name, tag_name)
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return Tag.for_repository_tag(deleted_tag)
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def change_repository_tag_expiration(self, tag, expiration_date):
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""" Sets the expiration date of the tag under the matching repository to that given. If the
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expiration date is None, then the tag will not expire. Returns a tuple of the previous
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expiration timestamp in seconds (if any), and whether the operation succeeded.
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"""
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try:
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tag_obj = database.RepositoryTag.get(id=tag._db_id)
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except database.RepositoryTag.DoesNotExist:
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return (None, False)
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return model.tag.change_tag_expiration(tag_obj, expiration_date)
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def get_legacy_images_owned_by_tag(self, tag):
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""" Returns all legacy images *solely owned and used* by the given tag. """
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try:
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tag_obj = database.RepositoryTag.get(id=tag._db_id)
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except database.RepositoryTag.DoesNotExist:
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return None
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# Collect the IDs of all images that the tag uses.
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tag_image_ids = set()
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tag_image_ids.add(tag_obj.image.id)
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tag_image_ids.update(tag_obj.image.ancestor_id_list())
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# Remove any images shared by other tags.
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for current_tag in model.tag.list_active_repo_tags(tag_obj.repository_id):
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if current_tag == tag_obj:
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continue
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tag_image_ids.discard(current_tag.image.id)
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tag_image_ids = tag_image_ids.difference(current_tag.image.ancestor_id_list())
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if not tag_image_ids:
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return []
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if not tag_image_ids:
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return []
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# Load the images we need to return.
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images = database.Image.select().where(database.Image.id << list(tag_image_ids))
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all_image_ids = set()
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for image in images:
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all_image_ids.add(image.id)
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all_image_ids.update(image.ancestor_id_list())
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# Build a map of all the images and their parents.
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images_map = {}
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all_images = database.Image.select().where(database.Image.id << list(all_image_ids))
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for image in all_images:
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images_map[image.id] = image
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return [LegacyImage.for_image(image, images_map=images_map) for image in images]
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def get_security_status(self, manifest_or_legacy_image):
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""" Returns the security status for the given manifest or legacy image or None if none. """
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image = None
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if isinstance(manifest_or_legacy_image, Manifest):
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try:
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tag_manifest = database.TagManifest.get(id=manifest_or_legacy_image._db_id)
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image = tag_manifest.tag.image
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except database.TagManifest.DoesNotExist:
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return None
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else:
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try:
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image = database.Image.get(id=manifest_or_legacy_image._db_id)
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except database.Image.DoesNotExist:
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return None
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if image.security_indexed_engine is not None and image.security_indexed_engine >= 0:
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return SecurityScanStatus.SCANNED if image.security_indexed else SecurityScanStatus.FAILED
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return SecurityScanStatus.QUEUED
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pre_oci_model = PreOCIModel()
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