fractafrag/services/renderer/server.js
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

58 lines
1.6 KiB
JavaScript

/**
* Fractafrag Renderer — Headless Chromium shader render service.
*
* Accepts GLSL code via POST /render, renders in an isolated browser context,
* returns thumbnail + preview video.
*
* Full implementation in Track C.
*/
import express from 'express';
import { writeFileSync, mkdirSync, existsSync } from 'fs';
import path from 'path';
const app = express();
app.use(express.json({ limit: '1mb' }));
const PORT = 3100;
const OUTPUT_DIR = process.env.OUTPUT_DIR || '/renders';
const MAX_DURATION = parseInt(process.env.MAX_RENDER_DURATION || '8', 10);
// Ensure output directory exists
if (!existsSync(OUTPUT_DIR)) {
mkdirSync(OUTPUT_DIR, { recursive: true });
}
// Health check
app.get('/health', (req, res) => {
res.json({ status: 'ok', service: 'renderer' });
});
// Render endpoint (stub — Track C)
app.post('/render', async (req, res) => {
const { glsl, duration = 5, width = 640, height = 360, fps = 30 } = req.body;
if (!glsl) {
return res.status(400).json({ error: 'Missing glsl field' });
}
// TODO: Track C implementation
// 1. Launch Puppeteer page
// 2. Inject GLSL into shader template HTML
// 3. Capture frames for `duration` seconds
// 4. Encode to WebM/MP4 + extract thumbnail
// 5. Write to OUTPUT_DIR
// 6. Return URLs
res.status(501).json({
error: 'Renderer implementation coming in Track C',
thumbnail_url: null,
preview_url: null,
});
});
app.listen(PORT, '0.0.0.0', () => {
console.log(`Renderer service listening on :${PORT}`);
console.log(`Output dir: ${OUTPUT_DIR}`);
console.log(`Max render duration: ${MAX_DURATION}s`);
});