36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
from pathlib import Path
|
|
|
|
from sqlalchemy import create_engine
|
|
from sqlalchemy.orm import DeclarativeBase, sessionmaker
|
|
|
|
from .config import settings
|
|
|
|
|
|
class Base(DeclarativeBase):
|
|
pass
|
|
|
|
|
|
if settings.database_url.startswith("sqlite"):
|
|
Path(settings.database_url.replace("sqlite:///", "")).parent.mkdir(parents=True, exist_ok=True)
|
|
engine = create_engine(settings.database_url, connect_args={"check_same_thread": False})
|
|
else:
|
|
engine = create_engine(settings.database_url, pool_pre_ping=True)
|
|
|
|
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
|
|
|
|
|
|
def get_db():
|
|
db = SessionLocal()
|
|
try:
|
|
yield db
|
|
finally:
|
|
# A request may exit through an exception or an early return before a
|
|
# route explicitly commits. Roll back first so any checked-out
|
|
# connection is returned to QueuePool in a clean state, then close the
|
|
# Session itself. Session.close() also rolls back, but doing it here
|
|
# makes the lifecycle guarantee explicit and observable in tests.
|
|
try:
|
|
db.rollback()
|
|
finally:
|
|
db.close()
|