44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
|
"""Async SQLAlchemy engine/session setup."""
|
||
|
|
|
||
|
|
from collections.abc import AsyncIterator
|
||
|
|
|
||
|
|
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
|
||
|
|
from sqlalchemy.orm import DeclarativeBase
|
||
|
|
|
||
|
|
from gogo.config import get_settings
|
||
|
|
|
||
|
|
|
||
|
|
class Base(DeclarativeBase):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
_engine = None
|
||
|
|
_sessionmaker: async_sessionmaker[AsyncSession] | None = None
|
||
|
|
|
||
|
|
|
||
|
|
def get_engine():
|
||
|
|
global _engine, _sessionmaker
|
||
|
|
if _engine is None:
|
||
|
|
_engine = create_async_engine(get_settings().database_url, pool_pre_ping=True)
|
||
|
|
_sessionmaker = async_sessionmaker(_engine, expire_on_commit=False)
|
||
|
|
return _engine
|
||
|
|
|
||
|
|
|
||
|
|
def get_sessionmaker() -> async_sessionmaker[AsyncSession]:
|
||
|
|
get_engine()
|
||
|
|
assert _sessionmaker is not None
|
||
|
|
return _sessionmaker
|
||
|
|
|
||
|
|
|
||
|
|
async def get_session() -> AsyncIterator[AsyncSession]:
|
||
|
|
"""FastAPI dependency."""
|
||
|
|
async with get_sessionmaker()() as session:
|
||
|
|
yield session
|
||
|
|
|
||
|
|
|
||
|
|
def reset_engine() -> None:
|
||
|
|
"""Test helper: force re-creation of the engine (e.g. after settings change)."""
|
||
|
|
global _engine, _sessionmaker
|
||
|
|
_engine = None
|
||
|
|
_sessionmaker = None
|