93 lines
5.3 KiB
Python
93 lines
5.3 KiB
Python
"""SQLAlchemy 异步数据库配置"""
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from contextlib import asynccontextmanager
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from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
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from sqlalchemy import event
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from app.config import settings
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# SQLite 异步需要 aiosqlite
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db_url = settings.database_url.replace("sqlite:///", "sqlite+aiosqlite:///")
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engine = create_async_engine(db_url, echo=False)
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# 启用 WAL 模式：允许读写并发，写操作不阻塞读操作
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@event.listens_for(engine.sync_engine, "connect")
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def _set_sqlite_pragma(dbapi_connection, connection_record):
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cursor = dbapi_connection.cursor()
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cursor.execute("PRAGMA journal_mode=WAL")
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cursor.execute("PRAGMA busy_timeout=5000") # 写锁最多等待 5 秒
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cursor.close()
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async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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@asynccontextmanager
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async def get_db():
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session = async_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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"""创建所有表，并补充新增列"""
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from app.db.tables import metadata
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async with engine.begin() as conn:
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await conn.run_sync(metadata.create_all)
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# 补充新增列（SQLite ALTER TABLE ADD COLUMN，已存在会忽略）
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for col_sql in [
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"ALTER TABLE recommendations ADD COLUMN supply_demand_score REAL DEFAULT 0",
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"ALTER TABLE recommendations ADD COLUMN price_action_score REAL DEFAULT 0",
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"ALTER TABLE recommendations ADD COLUMN position_score REAL",
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"ALTER TABLE recommendations ADD COLUMN valuation_score REAL",
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"ALTER TABLE recommendations ADD COLUMN risk_note TEXT DEFAULT ''",
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"ALTER TABLE recommendations ADD COLUMN action_plan TEXT DEFAULT '观察'",
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"ALTER TABLE recommendations ADD COLUMN trigger_condition TEXT DEFAULT ''",
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"ALTER TABLE recommendations ADD COLUMN invalidation_condition TEXT DEFAULT ''",
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"ALTER TABLE recommendations ADD COLUMN suggested_position_pct REAL DEFAULT 0",
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"ALTER TABLE recommendations ADD COLUMN review_after_days INTEGER DEFAULT 3",
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"ALTER TABLE recommendations ADD COLUMN lifecycle_status TEXT DEFAULT 'candidate'",
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"ALTER TABLE recommendations ADD COLUMN data_freshness TEXT DEFAULT ''",
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"ALTER TABLE recommendations ADD COLUMN llm_analysis TEXT DEFAULT ''",
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"ALTER TABLE recommendations ADD COLUMN strategy TEXT DEFAULT 'momentum'",
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"ALTER TABLE recommendations ADD COLUMN llm_score REAL",
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"ALTER TABLE market_temperature ADD COLUMN max_streak INTEGER",
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"ALTER TABLE market_temperature ADD COLUMN broken_rate REAL",
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"ALTER TABLE recommendations ADD COLUMN entry_signal_type TEXT DEFAULT 'none'",
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"ALTER TABLE recommendations ADD COLUMN entry_timing TEXT DEFAULT ''",
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"ALTER TABLE sector_heat ADD COLUMN stage TEXT",
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"ALTER TABLE sector_heat ADD COLUMN days_continuous INTEGER",
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"ALTER TABLE sector_heat ADD COLUMN member_count INTEGER",
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"ALTER TABLE sector_heat ADD COLUMN leading_stocks TEXT",
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"ALTER TABLE sector_heat ADD COLUMN pct_trend TEXT",
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"ALTER TABLE sector_heat ADD COLUMN turnover_avg REAL",
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"ALTER TABLE sector_heat ADD COLUMN main_force_ratio REAL",
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"ALTER TABLE recommendation_tracking ADD COLUMN max_price REAL",
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"ALTER TABLE recommendation_tracking ADD COLUMN min_price REAL",
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"ALTER TABLE recommendation_tracking ADD COLUMN max_return_pct REAL",
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"ALTER TABLE recommendation_tracking ADD COLUMN max_drawdown_pct REAL",
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"ALTER TABLE recommendation_tracking ADD COLUMN days_since_recommendation INTEGER DEFAULT 0",
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"ALTER TABLE recommendation_tracking ADD COLUMN close_reason TEXT DEFAULT ''",
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"ALTER TABLE recommendation_tracking ADD COLUMN review_note TEXT DEFAULT ''",
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"ALTER TABLE stock_diagnoses ADD COLUMN diagnosis_mode TEXT DEFAULT 'entry'",
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"ALTER TABLE user_watchlists ADD COLUMN note TEXT DEFAULT ''",
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"ALTER TABLE user_watchlists ADD COLUMN watch_group TEXT DEFAULT 'observe'",
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"ALTER TABLE user_watchlists ADD COLUMN cost_price REAL",
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"ALTER TABLE user_watchlists ADD COLUMN is_active BOOLEAN DEFAULT 1",
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"ALTER TABLE user_watchlists ADD COLUMN updated_at DATETIME DEFAULT CURRENT_TIMESTAMP",
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"ALTER TABLE watchlist_analyses ADD COLUMN conclusion TEXT DEFAULT '观察'",
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"ALTER TABLE watchlist_analyses ADD COLUMN advice TEXT DEFAULT ''",
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"ALTER TABLE watchlist_analyses ADD COLUMN trigger_condition TEXT DEFAULT ''",
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"ALTER TABLE watchlist_analyses ADD COLUMN risk_note TEXT DEFAULT ''",
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"ALTER TABLE watchlist_analyses ADD COLUMN summary TEXT DEFAULT ''",
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"ALTER TABLE watchlist_analyses ADD COLUMN full_analysis TEXT DEFAULT ''",
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"ALTER TABLE watchlist_analyses ADD COLUMN score_reference REAL DEFAULT 0",
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"ALTER TABLE watchlist_analyses ADD COLUMN analysis_mode TEXT DEFAULT 'scheduled'",
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]:
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try:
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await conn.execute(
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__import__("sqlalchemy").text(col_sql)
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)
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except Exception:
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pass # 列已存在，忽略
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