36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
"""数据库会话依赖"""
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from typing import AsyncGenerator
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from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
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from app.config import settings
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# 处理 sqlite 协议兼容
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db_url = settings.DATABASE_URL
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if db_url.startswith("sqlite"):
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db_url = db_url.replace("sqlite://", "sqlite+aiosqlite://")
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engine = create_async_engine(db_url, echo=False, pool_pre_ping=True)
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async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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async with async_session() as session:
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try:
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yield session
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finally:
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await session.close()
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async def init_db():
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"""Apply non-destructive schema upgrades before creating missing tables."""
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from importlib import import_module
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from app.models import Base
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migration = import_module("migrations.versions.20260803_reliability_monitoring")
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run_reliability_migration = migration.run_reliability_migration
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async with engine.begin() as conn:
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await conn.run_sync(run_reliability_migration)
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await conn.run_sync(Base.metadata.create_all)
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