38 lines
1.4 KiB
Python
38 lines
1.4 KiB
Python
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from image.docker.interfaces import ContentRetriever
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from data.database import Manifest
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from data.model.oci.blob import get_repository_blob_by_digest
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from data.model.storage import get_layer_path
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class RepositoryContentRetriever(ContentRetriever):
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""" Implementation of the ContentRetriever interface for manifests that retrieves
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config blobs and child manifests for the specified repository.
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"""
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def __init__(self, repository_id, storage):
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self.repository_id = repository_id
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self.storage = storage
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@classmethod
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def for_repository(cls, repository_id, storage):
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return RepositoryContentRetriever(repository_id, storage)
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def get_manifest_bytes_with_digest(self, digest):
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""" Returns the bytes of the manifest with the given digest or None if none found. """
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query = (Manifest
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.select()
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.where(Manifest.repository == self.repository_id)
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.where(Manifest.digest == digest))
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try:
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return query.get().manifest_bytes
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except Manifest.DoesNotExist:
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return None
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def get_blob_bytes_with_digest(self, digest):
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""" Returns the bytes of the blob with the given digest or None if none found. """
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blob = get_repository_blob_by_digest(self.repository_id, digest)
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if blob is None:
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return None
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assert blob.locations is not None
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return self.storage.get_content(blob.locations, get_layer_path(blob))
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