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Simplifying queries around images and placements

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Only verbs needs to load placements for multiple images, so we can vastly simplify and optimize most queries by making it two-step, and having the rest of the image loads not worry about placements
This commit is contained in:
Joseph Schorr 2018-04-02 14:16:43 -04:00
parent 0c7c9a7a0a
commit 8146646761
7 changed files with 78 additions and 141 deletions
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14
endpoints/verbs/models_pre_oci.py
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@ -30,8 +30,9 @@ class PreOCIModel(VerbsDataInterface):
repo_image_record = model.image.get_image_by_id(
repo_image.repository.namespace_name, repo_image.repository.name, repo_image.image_id)
parents = model.image.get_parent_images_with_placements(
parents = model.image.get_parent_images(
repo_image.repository.namespace_name, repo_image.repository.name, repo_image_record)
placements_map = model.image.get_placements_for_images(parents)
yield repo_image
@ -42,9 +43,10 @@ class PreOCIModel(VerbsDataInterface):
except ValueError:
pass
locations = [placement.location.name for placement in placements_map[parent.storage.id]]
yield ImageWithBlob(
image_id=parent.docker_image_id,
blob=_blob(parent.storage),
blob=_blob(parent.storage, locations=locations),
repository=repo_image.repository,
compat_metadata=metadata,
v1_metadata=_docker_v1_metadata(repo_image.repository.namespace_name,
@ -175,15 +177,11 @@ def _derived_image(blob_record, repo_image):
internal_source_image_db_id=repo_image.internal_db_id,)
def _blob(blob_record):
def _blob(blob_record, locations=None):
"""
Returns a Blob object for the given Pre-OCI data model blob instance.
"""
if hasattr(blob_record, 'locations'):
locations = blob_record.locations
else:
locations = model.storage.get_storage_locations(blob_record.uuid)
locations = locations or model.storage.get_storage_locations(blob_record.uuid)
return Blob(
uuid=blob_record.uuid,
size=blob_record.image_size,