72cb1b6fe5
- shared/db.py: async engine + session factory - shared/models/base.py: DeclarativeBase + TimestampMixin - shared/models/trading.py: Strategy, Signal, Trade, Position, StrategyWeightHistory - shared/models/news.py: Article, ArticleSentiment - shared/models/learning.py: TradeOutcome, LearningAdjustment - shared/models/auth.py: User, UserCredential - shared/models/timeseries.py: MarketData, PortfolioSnapshot, StrategyMetric - Alembic async env.py with initial migration including TimescaleDB hypertables - 21 model tests covering enums, instantiation, metadata registration
22 lines
629 B
Python
22 lines
629 B
Python
"""SQLAlchemy async engine and session factory."""
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from shared.config import BaseConfig
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def create_db(config: BaseConfig) -> tuple:
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"""Create an async engine and session factory from the given config.
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Returns a ``(engine, session_factory)`` tuple.
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"""
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engine = create_async_engine(
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config.database_url,
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echo=config.log_level == "DEBUG",
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)
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session_factory = async_sessionmaker(
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engine,
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class_=AsyncSession,
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expire_on_commit=False,
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)
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return engine, session_factory
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