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Fix get_blob_path to not make any database calls and add a test

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This will be supported by caching, hopefully removing the need to hit the database when the blob object is cached
This commit is contained in:
Joseph Schorr 2017-12-13 16:27:46 -05:00
parent e06a83faf9
commit 51e67ab7f5
4 changed files with 44 additions and 10 deletions
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17
data/model/storage.py
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@ -248,12 +248,19 @@ def get_storage_by_uuid(storage_uuid):
def get_layer_path(storage_record):
""" Returns the path in the storage engine to the layer data referenced by the storage row. """
store = config.store
if not storage_record.cas_path:
logger.debug('Serving layer from legacy v1 path')
return store.v1_image_layer_path(storage_record.uuid)
return get_layer_path_for_storage(storage_record.uuid, storage_record.cas_path,
storage_record.content_checksum)
return store.blob_path(storage_record.content_checksum)
def get_layer_path_for_storage(storage_uuid, cas_path, content_checksum):
""" Returns the path in the storage engine to the layer data referenced by the storage
information. """
store = config.store
if not cas_path:
logger.debug('Serving layer from legacy v1 path for storage %s', storage_uuid)
return store.v1_image_layer_path(storage_uuid)
return store.blob_path(content_checksum)
def lookup_repo_storages_by_content_checksum(repo, checksums):