fractafrag/services/api/app/database.py
John Lightner 05d39fdda8 M0: Foundation scaffold — Docker Compose, DB schema, FastAPI app, all service stubs
Track A (Infrastructure & Data Layer):
- docker-compose.yml with all 7 services (nginx, frontend, api, mcp, renderer, worker, postgres, redis)
- docker-compose.override.yml for local dev (hot reload, port exposure)
- PostgreSQL init.sql with full schema (15 tables, pgvector indexes, creator economy stubs)
- .env.example with all required environment variables

Track A+B (API Layer):
- FastAPI app with 10 routers (auth, shaders, feed, votes, generate, desires, users, payments, mcp_keys, health)
- SQLAlchemy ORM models for all 15 tables
- Pydantic schemas for all request/response types
- JWT auth middleware (access + refresh tokens, Redis blocklist)
- Redis rate limiting middleware
- Celery worker config with job stubs (render, embed, generate, feed cache, expire bounties)
- Alembic migration framework

Service stubs:
- MCP server (health endpoint, 501 for all tools)
- Renderer service (Express + Puppeteer scaffold, 501 for /render)
- Frontend (package.json with React/Vite/Three.js/TanStack/Tailwind deps)
- Nginx reverse proxy config (/, /api, /mcp, /renders)

Project:
- DECISIONS.md with 11 recorded architectural decisions
- README.md with architecture overview
- Sample shader seed data (plasma, fractal noise, raymarched sphere)
2026-03-24 20:45:08 -05:00

36 lines
927 B
Python

"""Fractafrag API — Database engine and session management."""
from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
from sqlalchemy.orm import DeclarativeBase
from app.config import get_settings
settings = get_settings()
engine = create_async_engine(
settings.database_url,
echo=False,
pool_size=20,
max_overflow=10,
pool_pre_ping=True,
)
async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
class Base(DeclarativeBase):
"""Base class for all SQLAlchemy ORM models."""
pass
async def get_db() -> AsyncSession:
"""FastAPI dependency: yields an async DB session."""
async with async_session() as session:
try:
yield session
await session.commit()
except Exception:
await session.rollback()
raise
finally:
await session.close()