copilot-swe-agent[bot]
70dc77011a
Agent-Logs-Url: https://github.com/christianlouis/dmarq/sessions/d1890838-1770-4d5f-886f-f210df761fae Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
from typing import Generator
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from urllib.parse import urlparse, urlunparse
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from sqlalchemy import create_engine
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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from app.core.config import get_settings
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_ASYNC_TO_SYNC_SCHEMES = {
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"postgresql+asyncpg": "postgresql+psycopg2",
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}
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def _make_sync_db_url(url: str) -> str:
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"""Return the synchronous-driver equivalent of *url*.
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Kubernetes and docker-compose deployments sometimes configure DATABASE_URL
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with an async driver scheme (e.g. ``postgresql+asyncpg://``). Alembic and
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the synchronous SQLAlchemy engine used here require a sync driver, so we
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map known async schemes to their psycopg2 equivalents.
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Only the scheme component of the URL is rewritten; all other parts
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(credentials, host, path, query) are left untouched.
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"""
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parsed = urlparse(url)
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sync_scheme = _ASYNC_TO_SYNC_SCHEMES.get(parsed.scheme)
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if sync_scheme is None:
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return url
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return urlunparse(parsed._replace(scheme=sync_scheme))
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settings = get_settings()
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# Configure SQLAlchemy (normalise async driver schemes to their sync equivalents)
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engine = create_engine(_make_sync_db_url(settings.DATABASE_URL), pool_pre_ping=True)
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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# Create base class for SQLAlchemy models
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Base = declarative_base()
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def get_db() -> Generator:
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"""
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Dependency for getting DB sessions
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"""
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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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