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37 lines
1.1 KiB
37 lines
1.1 KiB
from collections.abc import AsyncIterator
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from functools import lru_cache
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from sqlalchemy import event
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from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, async_sessionmaker, create_async_engine
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from app.core.config import get_settings
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@lru_cache(maxsize=1)
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def create_engine() -> AsyncEngine:
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settings = get_settings()
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engine = create_async_engine(settings.database_url, future=True)
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@event.listens_for(engine.sync_engine, "connect")
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def _set_sqlite_pragma(dbapi_connection, _connection_record) -> None:
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cursor = dbapi_connection.cursor()
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cursor.execute("PRAGMA foreign_keys=ON")
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cursor.close()
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return engine
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def create_session_factory() -> async_sessionmaker[AsyncSession]:
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return async_sessionmaker(create_engine(), class_=AsyncSession, expire_on_commit=False)
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async def get_db_session() -> AsyncIterator[AsyncSession]:
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session_factory = create_session_factory()
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async with session_factory() as session:
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yield session
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async def dispose_engine() -> None:
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engine = create_engine()
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await engine.dispose()
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create_engine.cache_clear()
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