def get_manifest_label(label_uuid, manifest):
""" Retrieves the manifest label on the manifest with the given UUID or None if none. """
try:
return (Label.select(
Label, LabelSourceType).join(LabelSourceType).where(
Label.uuid == label_uuid).switch(Label).join(ManifestLabel).
where(ManifestLabel.manifest == manifest).get())
except Label.DoesNotExist:
return None
def get_manifest_label(label_uuid, tag_manifest):
""" Retrieves the manifest label on the tag manifest with the given ID. """
try:
return (Label.select(
Label, LabelSourceType).join(LabelSourceType).where(
Label.uuid == label_uuid).switch(Label).join(TagManifestLabel).
where(TagManifestLabel.annotated == tag_manifest).get())
except Label.DoesNotExist:
return None
def list_manifest_labels(manifest_id, prefix_filter=None):
""" Lists all labels found on the given manifest, with an optional filter by key prefix. """
query = (Label.select(Label, MediaType).join(MediaType).switch(Label).join(
LabelSourceType).switch(Label).join(ManifestLabel).where(
ManifestLabel.manifest == manifest_id))
if prefix_filter is not None:
query = query.where(prefix_search(Label.key, prefix_filter))
return query
def list_manifest_labels(tag_manifest, prefix_filter=None):
""" Lists all labels found on the given tag manifest. """
query = (Label.select(Label, MediaType).join(MediaType).switch(Label).join(
LabelSourceType).switch(Label).join(TagManifestLabel).where(
TagManifestLabel.annotated == tag_manifest))
if prefix_filter is not None:
query = query.where(prefix_search(Label.key, prefix_filter))
return query
def _get_dangling_labels():
label_ids = set([current.id for current in Label.select()])
referenced_by_manifest = set(
[mlabel.label_id for mlabel in ManifestLabel.select()])
return label_ids - referenced_by_manifest
