80b96d236f
把原本散落在 /root/zikai 的 FastAPI 服务整理到 server/ 子目录， 开启独立 git 与 venv。运行时数据（config.yaml / keys / uploads） 按 .gitignore 留在工作目录但不入仓。
42 lines
997 B
Python
42 lines
997 B
Python
"""数据库引擎、Session 与 Declarative Base。"""
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from __future__ import annotations
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from collections.abc import Generator
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from sqlalchemy import create_engine
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from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
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from .config import get_settings
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_settings = get_settings()
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engine = create_engine(
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_settings.db_url(),
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pool_pre_ping=True,
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pool_size=_settings.database.pool_size,
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pool_recycle=_settings.database.pool_recycle,
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future=True,
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)
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SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)
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class Base(DeclarativeBase):
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pass
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def get_db() -> Generator[Session, None, None]:
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"""FastAPI 依赖：为每个请求产出一个 Session。"""
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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def init_db_schema() -> None:
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"""按需建表（幂等）。先导入 models 以注册映射。"""
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from . import models # noqa: F401
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Base.metadata.create_all(bind=engine)
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