59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
from __future__ import annotations
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from collections.abc import Generator
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from pathlib import Path
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from sqlalchemy import create_engine
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from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
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from sqlalchemy.pool import StaticPool
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from .config import get_settings
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class Base(DeclarativeBase):
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pass
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def _connect_args(database_url: str) -> dict[str, object]:
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if database_url.startswith("sqlite"):
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return {"check_same_thread": False}
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return {}
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def _engine_kwargs(database_url: str) -> dict[str, object]:
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if database_url in {"sqlite://", "sqlite:///:memory:"}:
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return {"poolclass": StaticPool}
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return {}
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def _ensure_sqlite_parent(database_url: str) -> None:
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if not database_url.startswith("sqlite:///"):
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return
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db_path = database_url.replace("sqlite:///", "", 1)
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if db_path not in (":memory:", ""):
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Path(db_path).parent.mkdir(parents=True, exist_ok=True)
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settings = get_settings()
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_ensure_sqlite_parent(settings.database_url)
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engine = create_engine(
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settings.database_url,
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connect_args=_connect_args(settings.database_url),
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**_engine_kwargs(settings.database_url),
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)
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SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, expire_on_commit=False)
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def init_db() -> None:
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from . import models # noqa: F401
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Base.metadata.create_all(bind=engine)
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def get_session() -> Generator[Session, None, None]:
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session = SessionLocal()
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try:
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yield session
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finally:
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session.close()
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