didier/database/engine.py

from urllib.parse import quote_plus

from sqlalchemy.engine import URL
from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
from sqlalchemy.orm import sessionmaker

import settings

encoded_password = quote_plus(settings.DB_PASSWORD)
url = URL.create(
    drivername="postgresql+asyncpg",
    username=settings.DB_USERNAME,
    password=encoded_password,
    host=settings.DB_HOST,
    port=settings.DB_PORT,
    database=settings.DB_NAME,
)

engine = create_async_engine(
    url,
    pool_pre_ping=True,
    future=True,
)

DBSession = sessionmaker(autocommit=False, autoflush=False, bind=engine, class_=AsyncSession, expire_on_commit=False)