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Boolean-returning methods should read as predicates. Renames DbStore.check_migrations, StoreManager.check_migrations, and the test patch accordingly.
60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
"""Shared SQLite-backed store base class for bot-bottle (PRD 0013)."""
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from __future__ import annotations
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import sqlite3
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from pathlib import Path
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try:
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from .migrations import TableMigrations
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except ImportError:
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from migrations import TableMigrations # type: ignore[import-not-found] # pylint: disable=import-error,no-name-in-module
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class DbVersionError(Exception):
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"""Raised when the on-disk schema is behind the current migration list."""
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class DbStore:
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"""Base for SQLite-backed stores. Subclasses resolve db_path then call super().__init__."""
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def __init__(self, db_path: Path, migrations: TableMigrations) -> None:
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self.db_path = db_path
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self._migrations = migrations
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self.db_path.parent.mkdir(parents=True, exist_ok=True)
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def _connect(self) -> sqlite3.Connection:
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conn = sqlite3.connect(self.db_path)
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conn.row_factory = sqlite3.Row
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return conn
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def is_migrated(self) -> bool:
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"""Return True if the DB is fully up-to-date, False if migration is needed."""
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if not self.db_path.exists():
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return False
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try:
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with self._connect() as conn:
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row = conn.execute(
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"SELECT version FROM schema_versions WHERE module = ?",
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(self._migrations.schema_key,),
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).fetchone()
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except sqlite3.OperationalError:
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return False
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version = row[0] if row else 0
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return version == len(self._migrations.migrations)
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def migrate(self) -> None:
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"""Apply any pending migrations and set permissions on the DB file."""
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with self._connect() as conn:
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self._migrations.apply(conn)
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self._chmod()
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def _chmod(self) -> None:
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try:
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self.db_path.chmod(0o600)
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except OSError:
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pass
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__all__ = ["DbStore", "DbVersionError"]
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