fix: use onFinished replace patch res.end, close getsentry#8848

packages/node/package.json

@@ -30,13 +30,15 @@
     "cookie": "^0.5.0",
     "https-proxy-agent": "^5.0.0",
     "lru_map": "^0.3.3",
+    "on-finished": "^2.4.1",
     "tslib": "^2.4.1 || ^1.9.3"
   },
   "devDependencies": {
     "@types/cookie": "0.5.2",
     "@types/express": "^4.17.14",
     "@types/lru-cache": "^5.1.0",
     "@types/node": "~10.17.0",
+    "@types/on-finished": "^2.3.1",
     "express": "^4.17.1",
     "nock": "^13.0.5",
     "undici": "^5.21.0"

packages/node/src/handlers.ts

@@ -21,6 +21,7 @@ import {
   tracingContextFromHeaders,
 } from '@sentry/utils';
 import type * as http from 'http';
+import * as onFinished from 'on-finished';
 
 import type { NodeClient } from './client';
 import { extractRequestData } from './requestdata';
@@ -173,18 +174,11 @@ export function requestHandler(
     next: (error?: any) => void,
   ): void {
     if (options && options.flushTimeout && options.flushTimeout > 0) {
-      // eslint-disable-next-line @typescript-eslint/unbound-method
-      const _end = res.end;
-      res.end = function (chunk?: any | (() => void), encoding?: string | (() => void), cb?: () => void): void {
-        void flush(options.flushTimeout)
-          .then(() => {
-            _end.call(this, chunk, encoding, cb);
-          })
-          .then(null, e => {
-            __DEBUG_BUILD__ && logger.error(e);
-            _end.call(this, chunk, encoding, cb);
-          });
-      };
+      onFinished(res, () => {
+        void flush(options.flushTimeout).then(null, e => {
+          __DEBUG_BUILD__ && logger.error(e);
+        });
+      });
     }
     runWithAsyncContext(() => {
       const currentHub = getCurrentHub();

packages/node/test/handlers.test.ts

@@ -132,6 +132,7 @@ describe('requestHandler', () => {
     const sentryRequestMiddleware = requestHandler({ flushTimeout: 1337 });
     sentryRequestMiddleware(req, res, next);
     res.end('ok');
+    res.emit('finish');
 
     setImmediate(() => {
       expect(flush).toHaveBeenCalledWith(1337);
@@ -146,6 +147,7 @@ describe('requestHandler', () => {
     const sentryRequestMiddleware = requestHandler({ flushTimeout: 1337 });
     sentryRequestMiddleware(req, res, next);
     res.end('ok');
+    res.emit('finish');
 
     setImmediate(() => {
       expect(res.finished).toBe(true);

packages/serverless/package.json

@@ -29,6 +29,7 @@
     "@sentry/utils": "7.71.0",
     "@types/aws-lambda": "^8.10.62",
     "@types/express": "^4.17.14",
+    "on-finished": "^2.4.1",
     "tslib": "^2.4.1 || ^1.9.3"
   },
   "devDependencies": {
@@ -37,6 +38,7 @@
     "@google-cloud/functions-framework": "^1.7.1",
     "@google-cloud/pubsub": "^2.5.0",
     "@types/node": "^14.6.4",
+    "@types/on-finished": "^2.3.1",
     "aws-sdk": "^2.765.0",
     "find-up": "^5.0.0",
     "google-gax": "^2.9.0",

packages/serverless/src/gcpfunction/http.ts

@@ -1,6 +1,7 @@
 import type { AddRequestDataToEventOptions } from '@sentry/node';
 import { captureException, flush, getCurrentHub } from '@sentry/node';
 import { isString, isThenable, logger, stripUrlQueryAndFragment, tracingContextFromHeaders } from '@sentry/utils';
+import * as onFinished from 'on-finished';
 
 import { domainify, markEventUnhandled, proxyFunction } from './../utils';
 import type { HttpFunction, WrapperOptions } from './general';
@@ -102,21 +103,14 @@ function _wrapHttpFunction(fn: HttpFunction, wrapOptions: Partial<HttpFunctionWr
     // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
     (res as any).__sentry_transaction = transaction;
 
-    // eslint-disable-next-line @typescript-eslint/unbound-method
-    const _end = res.end;
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    res.end = function (chunk?: any | (() => void), encoding?: string | (() => void), cb?: () => void): any {
+    onFinished(res, (err, res) => {
       transaction?.setHttpStatus(res.statusCode);
       transaction?.finish();
-
       void flush(options.flushTimeout)
-        .then(null, e => {
+        .then(null, (e: unknown) => {
           __DEBUG_BUILD__ && logger.error(e);
-        })
-        .then(() => {
-          _end.call(this, chunk, encoding, cb);
         });
-    };
+    });
 
     let fnResult;
     try {

packages/serverless/test/gcpfunction.test.ts

@@ -39,7 +39,16 @@ describe('GCPFunction', () => {
         headers: headers,
         body: { foo: 'bar' },
       } as Request;
-      const res = { end: resolve } as Response;
+      // make res extends EventEmitter
+      // eslint-disable-next-line @typescript-eslint/no-var-requires
+      const res = Object.create(require('events').EventEmitter.prototype);
+      // const res = { end: resolve } as Response;
+      res.end = function () {
+        this.emit('finish');
+        // onFinished use setImmediate to defer listener, same as here.
+        setImmediate(resolve)
+      }
+
       d.on('error', () => res.end());
       d.run(() => process.nextTick(fn, req, res));
     });

yarn.lock

@@ -5425,6 +5425,13 @@
   resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz#e486d0d97396d79beedd0a6e33f4534ff6b4973e"
   integrity sha512-f5j5b/Gf71L+dbqxIpQ4Z2WlmI/mPJ0fOkGGmFgtb6sAu97EPczzbS3/tJKxmcYDj55OX6ssqwDAWOHIYDRDGA==
 
+"@types/on-finished@^2.3.1":
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/@types/on-finished/-/on-finished-2.3.1.tgz#4537f9f2b47b3ba0b92c14a4bcc0f755aeda3484"
+  integrity sha512-mzVYaYcFs5Jd2n/O6uYIRUsFRR1cHyZLRvkLCU0E7+G5WhY0qBDAR5fUCeZbvecYOSh9ikhlesyi2UfI8B9ckQ==
+  dependencies:
+    "@types/node" "*"
+
 "@types/pako@^2.0.0":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@types/pako/-/pako-2.0.0.tgz#12ab4c19107528452e73ac99132c875ccd43bdfb"
@@ -20921,7 +20928,7 @@ obuf@^1.0.0, obuf@^1.1.2, obuf@~1.1.2:
   resolved "https://registry.yarnpkg.com/obuf/-/obuf-1.1.2.tgz#09bea3343d41859ebd446292d11c9d4db619084e"
   integrity sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg==
 
-on-finished@2.4.1, on-finished@^2.3.0:
+on-finished@2.4.1, on-finished@^2.3.0, on-finished@^2.4.1:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.4.1.tgz#58c8c44116e54845ad57f14ab10b03533184ac3f"
   integrity sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg==