22 lines
699 B
Python
22 lines
699 B
Python
"""Restore from the most recent 'pre_migration'-tagged backup."""
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from __future__ import annotations
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from pathlib import Path
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from . import backup as backup_mod
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class NoBackupFoundError(Exception):
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"""Raised when rollback() is called with no pre_migration backup on disk."""
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def rollback_to_pre_migration(*, db_url: str, images_root: Path) -> dict:
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manifest = backup_mod.find_latest_backup(images_root, tag="pre_migration")
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if manifest is None:
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raise NoBackupFoundError(
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"no pre_migration-tagged backup found under <images_root>/_backups/"
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)
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return backup_mod.restore_backup(
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manifest=manifest, db_url=db_url, images_root=images_root,
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)
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