feat(node): Add setupFastifyErrorHandler utility

For easier setup of error handling in fastify.

Author: mydea

dev-packages/e2e-tests/test-applications/node-experimental-fastify-app/src/app.js

@@ -2,21 +2,12 @@ require('./tracing');
 
 const Sentry = require('@sentry/node');
 const { fastify } = require('fastify');
-const fastifyPlugin = require('fastify-plugin');
 const http = require('http');
 
-const FastifySentry = fastifyPlugin(async (fastify, options) => {
-  fastify.decorateRequest('_sentryContext', null);
-
-  fastify.addHook('onError', async (_request, _reply, error) => {
-    Sentry.captureException(error);
-  });
-});
-
 const app = fastify();
 const port = 3030;
 
-app.register(FastifySentry);
+Sentry.setupFastifyErrorHandler(app);
 
 app.get('/test-success', function (req, res) {
   res.send({ version: 'v1' });

packages/node-experimental/src/index.ts

@@ -11,7 +11,7 @@ export { onUnhandledRejectionIntegration } from './integrations/onunhandledrejec
 export { anrIntegration } from './integrations/anr';
 
 export { expressIntegration, expressErrorHandler, setupExpressErrorHandler } from './integrations/tracing/express';
-export { fastifyIntegration } from './integrations/tracing/fastify';
+export { fastifyIntegration, setupFastifyErrorHandler } from './integrations/tracing/fastify';
 export { graphqlIntegration } from './integrations/tracing/graphql';
 export { mongoIntegration } from './integrations/tracing/mongo';
 export { mongooseIntegration } from './integrations/tracing/mongoose';

packages/node-experimental/src/integrations/tracing/fastify.ts

@@ -1,6 +1,6 @@
 import { registerInstrumentations } from '@opentelemetry/instrumentation';
 import { FastifyInstrumentation } from '@opentelemetry/instrumentation-fastify';
-import { defineIntegration } from '@sentry/core';
+import { captureException, defineIntegration } from '@sentry/core';
 import type { IntegrationFn } from '@sentry/types';
 
 import { addOriginToSpan } from '../../utils/addOriginToSpan';
@@ -28,3 +28,14 @@ const _fastifyIntegration = (() => {
  * Capture tracing data for fastify.
  */
 export const fastifyIntegration = defineIntegration(_fastifyIntegration);
+
+/**
+ * Setup an error handler for Fastify.
+ */
+export function setupFastifyErrorHandler(fastify: {
+  addHook: (hook: string, handler: (request: unknown, reply: unknown, error: Error) => void) => void;
+}): void {
+  fastify.addHook('onError', async (_request, _reply, error) => {
+    captureException(error);
+  });
+}