46 lines
1.2 KiB
Python
46 lines
1.2 KiB
Python
from __future__ import annotations
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from collections.abc import Generator
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from typing import Any
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from sqlalchemy import create_engine, event
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from sqlalchemy.engine import Engine
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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 build_engine(database_url: str) -> Engine:
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is_sqlite = database_url.startswith("sqlite")
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connect_args: dict[str, Any] = {"check_same_thread": False} if is_sqlite else {}
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engine = create_engine(
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database_url,
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connect_args=connect_args,
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pool_pre_ping=not is_sqlite,
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)
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if is_sqlite:
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@event.listens_for(engine, "connect")
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def _set_sqlite_pragma(dbapi_connection: Any, _connection_record: Any) -> None:
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cursor = dbapi_connection.cursor()
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cursor.execute("PRAGMA foreign_keys=ON")
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cursor.close()
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return engine
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engine = build_engine(get_settings().database_url)
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SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, expire_on_commit=False)
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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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