刘金宝
29 lines
905 B
Python
29 lines
905 B
Python
from collections.abc import Generator
|
|
from pathlib import Path
|
|
|
|
from sqlalchemy import create_engine
|
|
from sqlalchemy.orm import Session, sessionmaker
|
|
|
|
from app.core.config import settings
|
|
|
|
|
|
def _engine_kwargs() -> dict:
|
|
"""数据库连接：根据数据库类型设置 SQLAlchemy engine 参数。"""
|
|
if settings.database_url.startswith("sqlite"):
|
|
Path("storage").mkdir(exist_ok=True)
|
|
return {"connect_args": {"check_same_thread": False}}
|
|
return {"pool_pre_ping": True, "pool_recycle": 3600}
|
|
|
|
|
|
engine = create_engine(settings.database_url, **_engine_kwargs())
|
|
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, expire_on_commit=False)
|
|
|
|
|
|
def get_db() -> Generator[Session, None, None]:
|
|
"""请求依赖：为每个请求创建数据库会话并在结束后关闭。"""
|
|
db = SessionLocal()
|
|
try:
|
|
yield db
|
|
finally:
|
|
db.close()
|