TudorandClaude Fable 5
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next.config.js rewrites() bakes its destination into the build (routes-manifest.json), capturing FASTAPI_URL at build time. Because one frontend image is promoted staging->prod, the baked backend host forced every environment to name the backend service identically; staging names it 'backend_stg', so the browser's /api/* calls proxied to the baked 'http://backend' and failed with getaddrinfo ENOTFOUND backend. (SSR was unaffected because lib/api.ts reads FASTAPI_URL at runtime.) Replace the rewrites with route handlers that read FASTAPI_URL per request: - app/api/[...path]/route.ts — transparent proxy for all methods, streams the response, strips hop-by-hop headers, and returns 502 on upstream failure instead of crashing. - app/sitemap.xml/route.ts — proxies the backend sitemap (robots.ts points crawlers here). The same promoted image now adapts to whatever the backend is called in each environment. Verified: production build succeeds with /api/[...path] and /sitemap.xml as dynamic routes and an empty rewrites manifest. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
33 lines
1.0 KiB
TypeScript
33 lines
1.0 KiB
TypeScript
/**
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* Runtime proxy for /sitemap.xml → the FastAPI backend's generated sitemap.
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*
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* Like the /api/* proxy, this reads FASTAPI_URL at request time rather than
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* baking the backend host into the build, so one image works in every
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* environment. robots.ts points crawlers here.
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*/
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import { NextResponse } from 'next/server';
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export const dynamic = 'force-dynamic';
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export const runtime = 'nodejs';
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function backendOrigin(): string {
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const base = process.env.FASTAPI_URL || process.env.NEXT_PUBLIC_API_URL || 'http://localhost:8000/api';
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return base.replace(/\/api$/, '');
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}
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export async function GET() {
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let upstream: Response;
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try {
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upstream = await fetch(`${backendOrigin()}/sitemap.xml`, { cache: 'no-store' });
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} catch {
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return new NextResponse('Sitemap temporarily unavailable', { status: 502 });
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}
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const body = await upstream.text();
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return new NextResponse(body, {
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status: upstream.status,
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headers: { 'content-type': upstream.headers.get('content-type') || 'application/xml' },
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});
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}
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