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Add request ID propagation to server logs and responses #12

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Add request ID propagation to server logs and responses #12

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6 changes: 6 additions & 0 deletions src/index.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import Fastify, { FastifyInstance } from 'fastify';
import cors from '@fastify/cors';
import redis from '@fastify/redis';
import { randomUUID } from 'crypto';
import { initializeDatabase, DatabaseOptions } from './lib/database.js';
import { redirectRoutes } from './routes/redirect.js';
import { linkRoutes } from './routes/links.js';
Expand All @@ -25,6 +26,11 @@ export interface ServerOptions {
export async function createServer(options: ServerOptions = {}) {
const fastify = Fastify({
logger: options.logger !== undefined ? options.logger : true,
genReqId: (req) => (req.headers['x-request-id'] as string) || randomUUID(),
});

fastify.addHook('onSend', async (request, reply) => {
reply.header('x-request-id', request.id);
});

// CORS
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