Differential D2566 Diff 9258 swh/storage/cassandra/converters.py

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				# Copyright (C) 2019-2020 The Software Heritage developers
				# See the AUTHORS file at the top-level directory of this distribution
				# License: GNU General Public License version 3, or any later version
				# See top-level LICENSE file for more information


				import json
				from typing import Any, Dict

				import attr

				from swh.model.model import (
				RevisionType, ObjectType, Revision, Release,
				)


				from ..converters import git_headers_to_db, db_to_git_headers


				def revision_to_db(revision: Dict[str, Any]) -> Revision:
				metadata = revision.get('metadata')
				if metadata and 'extra_headers' in metadata:
				extra_headers = git_headers_to_db(
				metadata['extra_headers'])
				revision = {
				**revision,
				'metadata': {
				**metadata,
				'extra_headers': extra_headers
				}
				}

				rev = Revision.from_dict(revision)
				rev = attr.evolve(
				rev,
				type=rev.type.value,
				metadata=json.dumps(rev.metadata),
				)

				return rev


				def revision_from_db(revision) -> Revision:
				metadata = json.loads(revision.metadata)
				if metadata and 'extra_headers' in metadata:
				extra_headers = db_to_git_headers(
				metadata['extra_headers'])
				metadata['extra_headers'] = extra_headers
				rev = attr.evolve(
				revision,
				type=RevisionType(revision.type),
				metadata=metadata,
				)

				return rev


				def release_to_db(release: Dict[str, Any]) -> Release:
				rel = Release.from_dict(release)
				rel = attr.evolve(
				rel,
				target_type=rel.target_type.value,
				)
				return rel


				def release_from_db(release: Release) -> Release:
				release = attr.evolve(
				release,
				target_type=ObjectType(release.target_type),
				)
				return release