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https://github.com/fastapi-practices/fastapi_best_architecture.git
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57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import sys
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from fastapi import Depends
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from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
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from typing_extensions import Annotated
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from backend.app.common.log import log
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from backend.app.core.conf import settings
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from backend.app.database.base_class import MappedBase
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"""
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说明：SqlAlchemy
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"""
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SQLALCHEMY_DATABASE_URL = f'mysql+asyncmy://{settings.DB_USER}:{settings.DB_PASSWORD}@{settings.DB_HOST}:' \
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f'{settings.DB_PORT}/{settings.DB_DATABASE}?charset={settings.DB_CHARSET}'
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try:
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# 数据库引擎
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async_engine = create_async_engine(SQLALCHEMY_DATABASE_URL, echo=settings.DB_ECHO, future=True)
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# log.success('数据库连接成功')
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except Exception as e:
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log.error('❌ 数据库链接失败 {}', e)
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sys.exit()
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else:
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async_db_session = async_sessionmaker(bind=async_engine, autoflush=False, expire_on_commit=False)
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async def get_db() -> AsyncSession:
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"""
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session 生成器
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:return:
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"""
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session = async_db_session()
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try:
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yield session
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except Exception as se:
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await session.rollback()
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raise se
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finally:
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await session.close()
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# Session 依赖注入
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CurrentSession = Annotated[AsyncSession, Depends(get_db)]
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async def create_table():
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"""
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创建数据库表
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"""
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async with async_engine.begin() as coon:
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await coon.run_sync(MappedBase.metadata.create_all)
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