46 lines
1.1 KiB
Python
46 lines
1.1 KiB
Python
from collections.abc import AsyncIterator
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase
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from .config import get_settings
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class Base(DeclarativeBase):
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pass
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_engine = None
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_session_factory = None
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def get_engine():
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global _engine, _session_factory
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if _engine is None:
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_engine = create_async_engine(get_settings().database_url, pool_pre_ping=True)
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_session_factory = async_sessionmaker(_engine, expire_on_commit=False)
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return _engine
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def get_session_factory() -> async_sessionmaker[AsyncSession]:
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get_engine()
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assert _session_factory is not None
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return _session_factory
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def reset_engine() -> None:
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global _engine, _session_factory
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_engine = None
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_session_factory = None
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async def get_db() -> AsyncIterator[AsyncSession]:
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async with get_session_factory()() as session:
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yield session
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async def create_schema() -> None:
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from . import models # noqa: F401
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async with get_engine().begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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