| import aiosqlite | |
| import asyncio | |
| import config | |
| _db = None | |
| _db_lock = asyncio.Lock() | |
| async def get_db(): | |
| global _db | |
| if _db is None: | |
| _db = await aiosqlite.connect(config.DB_PATH) | |
| await _db.execute("PRAGMA journal_mode=WAL") | |
| await _db.execute("PRAGMA busy_timeout=10000") | |
| await _db.commit() | |
| return _db | |
| async def db_exec(func): | |
| async with _db_lock: | |
| return await func(await get_db()) | |
| class SharedDB: | |
| async def __aenter__(self): | |
| await _db_lock.acquire() | |
| return await get_db() | |
| async def __aexit__(self, *args): | |
| _db_lock.release() | |
| def shared_db(): | |
| return SharedDB() | |