47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
from collections.abc import Generator
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from sqlalchemy import create_engine, inspect, text
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from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
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from app.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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settings = get_settings()
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engine = create_engine(settings.database_url, connect_args=_connect_args(settings.database_url))
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SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
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def init_db() -> None:
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import app.models # noqa: F401
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Base.metadata.create_all(bind=engine)
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_ensure_runtime_schema()
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def _ensure_runtime_schema() -> None:
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inspector = inspect(engine)
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if "crawl_runs" not in inspector.get_table_names():
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return
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crawl_run_columns = {column["name"] for column in inspector.get_columns("crawl_runs")}
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if "skipped_count" not in crawl_run_columns:
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with engine.begin() as connection:
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connection.execute(text("ALTER TABLE crawl_runs ADD COLUMN skipped_count INTEGER NOT NULL DEFAULT 0"))
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def get_db() -> Generator[Session, None, None]:
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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