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88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
from sqlmodel import SQLModel, create_engine
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from sqlmodel.ext.asyncio.session import AsyncSession
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from sqlalchemy.ext.asyncio import create_async_engine
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from sqlalchemy.orm import sessionmaker
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from sqlalchemy import text
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import os
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from dotenv import load_dotenv
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load_dotenv()
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DB_USER = os.getenv("DB_USER")
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DB_PASSWORD = os.getenv("DB_PASSWORD")
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DB_HOST = os.getenv("DB_HOST")
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DB_PORT = os.getenv("DB_PORT", "3306")
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DB_NAME = os.getenv("DB_NAME")
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DATABASE_URL = f"mysql+aiomysql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}?charset=utf8mb4"
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_engine = None
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def get_engine():
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"""Lazy engine creation to ensure pool is bound to the current event loop."""
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global _engine
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if _engine is None:
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_engine = create_async_engine(
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DATABASE_URL,
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echo=True,
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future=True,
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pool_pre_ping=True,
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pool_recycle=300,
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)
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return _engine
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async def dispose_engine():
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"""Dispose engine and reset so next call creates a fresh one."""
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global _engine
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if _engine is not None:
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await _engine.dispose()
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_engine = None
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# Module-level alias for backward compatibility
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engine = None # Use get_engine() instead
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async def init_db():
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eng = get_engine()
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async with eng.begin() as conn:
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# await conn.run_sync(SQLModel.metadata.drop_all)
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await conn.run_sync(SQLModel.metadata.create_all)
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# Migrate: add new columns to existing repairtask table
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migrations = [
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"ALTER TABLE repairtask ADD COLUMN IF NOT EXISTS repair_round INTEGER DEFAULT 1",
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"ALTER TABLE repairtask ADD COLUMN IF NOT EXISTS failure_reason TEXT",
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# Log source support
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"ALTER TABLE errorlog ADD COLUMN IF NOT EXISTS source VARCHAR(20) DEFAULT 'runtime'",
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"ALTER TABLE errorlog MODIFY COLUMN file_path VARCHAR(255) NULL",
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"ALTER TABLE errorlog MODIFY COLUMN line_number INTEGER NULL",
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"CREATE INDEX ix_errorlog_source ON errorlog (source)",
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# ErrorLog failure_reason
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"ALTER TABLE errorlog ADD COLUMN IF NOT EXISTS failure_reason TEXT",
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# Bug severity (1-10 AI评估等级)
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"ALTER TABLE errorlog ADD COLUMN IF NOT EXISTS severity INTEGER",
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"ALTER TABLE errorlog ADD COLUMN IF NOT EXISTS severity_reason TEXT",
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# Project repair_enabled toggle
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"ALTER TABLE project ADD COLUMN IF NOT EXISTS repair_enabled BOOLEAN DEFAULT TRUE",
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# Seed Project table from existing ErrorLog data
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"""INSERT INTO project (project_id, created_at, updated_at)
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SELECT DISTINCT e.project_id, NOW(), NOW()
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FROM errorlog e
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WHERE NOT EXISTS (SELECT 1 FROM project p WHERE p.project_id = e.project_id)""",
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]
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for sql in migrations:
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try:
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await conn.execute(text(sql))
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except Exception:
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pass # Already applied
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async def get_session() -> AsyncSession:
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async_session = sessionmaker(
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get_engine(), class_=AsyncSession, expire_on_commit=False
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)
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async with async_session() as session:
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yield session
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