This is very scary

packages/vercel-edge/package.json

@@ -39,7 +39,13 @@
  "access": "public"
  },
  "dependencies": {
+ "@opentelemetry/api": "^1.9.0",
+ "@opentelemetry/core": "^1.25.1",
+ "@opentelemetry/resources": "^1.26.0",
+ "@opentelemetry/sdk-trace-base": "^1.26.0",
+ "@opentelemetry/semantic-conventions": "^1.27.0",
  "@sentry/core": "8.30.0",
+ "@sentry/opentelemetry": "8.30.0",
  "@sentry/types": "8.30.0",
  "@sentry/utils": "8.30.0"
  },

packages/vercel-edge/src/async-local-storage-context-manager.ts

@@ -0,0 +1,324 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Taken from:
+// - https://github.com/open-telemetry/opentelemetry-js/blob/6515ed8098333646a63a74a8c0150cc2daf520db/packages/opentelemetry-context-async-hooks/src/AbstractAsyncHooksContextManager.ts
+// - https://github.com/open-telemetry/opentelemetry-js/blob/6515ed8098333646a63a74a8c0150cc2daf520db/packages/opentelemetry-context-async-hooks/src/AsyncLocalStorageContextManager.ts
+
+import { EventEmitter } from 'events';
+import { ROOT_CONTEXT } from '@opentelemetry/api';
+import type { Context, ContextManager } from '@opentelemetry/api';
+import { logger } from '@sentry/utils';
+import { DEBUG_BUILD } from './debug-build';
+
+interface AsyncLocalStorage<T> {
+ getStore(): T | undefined;
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ run<R, TArgs extends any[]>(store: T, callback: (...args: TArgs) => R, ...args: TArgs): R;
+ disable(): void;
+}
+
+type Func<T> = (...args: unknown[]) => T;
+
+/**
+ * Store a map for each event of all original listeners and their "patched"
+ * version. So when a listener is removed by the user, the corresponding
+ * patched function will be also removed.
+ */
+interface PatchMap {
+ [name: string]: WeakMap<Func<void>, Func<void>>;
+}
+
+const ADD_LISTENER_METHODS = [
+ 'addListener' as const,
+ 'on' as const,
+ 'once' as const,
+ 'prependListener' as const,
+ 'prependOnceListener' as const,
+];
+
+abstract class AbstractAsyncHooksContextManager implements ContextManager {
+ private readonly _kOtListeners = Symbol('OtListeners');
+ private _wrapped = false;
+
+ /**
+ * Binds a the certain context or the active one to the target function and then returns the target
+ * @param context A context (span) to be bind to target
+ * @param target a function or event emitter. When target or one of its callbacks is called,
+ * the provided context will be used as the active context for the duration of the call.
+ */
+ public bind<T>(context: Context, target: T): T {
+ if (target instanceof EventEmitter) {
+ return this._bindEventEmitter(context, target);
+ }
+
+ if (typeof target === 'function') {
+ // @ts-expect-error This is vendored
+ return this._bindFunction(context, target);
+ }
+ return target;
+ }
+
+ /**
+ * By default, EventEmitter call their callback with their context, which we do
+ * not want, instead we will bind a specific context to all callbacks that
+ * go through it.
+ * @param context the context we want to bind
+ * @param ee EventEmitter an instance of EventEmitter to patch
+ */
+ private _bindEventEmitter<T extends EventEmitter>(context: Context, ee: T): T {
+ const map = this._getPatchMap(ee);
+ if (map !== undefined) return ee;
+ this._createPatchMap(ee);
+
+ // patch methods that add a listener to propagate context
+ ADD_LISTENER_METHODS.forEach(methodName => {
+ if (ee[methodName] === undefined) return;
+ ee[methodName] = this._patchAddListener(ee, ee[methodName], context);
+ });
+ // patch methods that remove a listener
+ if (typeof ee.removeListener === 'function') {
+ // eslint-disable-next-line @typescript-eslint/unbound-method
+ ee.removeListener = this._patchRemoveListener(ee, ee.removeListener);
+ }
+ if (typeof ee.off === 'function') {
+ // eslint-disable-next-line @typescript-eslint/unbound-method
+ ee.off = this._patchRemoveListener(ee, ee.off);
+ }
+ // patch method that remove all listeners
+ if (typeof ee.removeAllListeners === 'function') {
+ // eslint-disable-next-line @typescript-eslint/unbound-method
+ ee.removeAllListeners = this._patchRemoveAllListeners(ee, ee.removeAllListeners);
+ }
+ return ee;
+ }
+
+ /**
+ * Patch methods that remove a given listener so that we match the "patched"
+ * version of that listener (the one that propagate context).
+ * @param ee EventEmitter instance
+ * @param original reference to the patched method
+ */
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ private _patchRemoveListener(ee: EventEmitter, original: (...args: any[]) => any): any {
+ // eslint-disable-next-line @typescript-eslint/no-this-alias
+ const contextManager = this;
+ return function (this: never, event: string, listener: Func<void>) {
+ const events = contextManager._getPatchMap(ee)?.[event];
+ if (events === undefined) {
+ return original.call(this, event, listener);
+ }
+ const patchedListener = events.get(listener);
+ return original.call(this, event, patchedListener || listener);
+ };
+ }
+
+ /**
+ * Patch methods that remove all listeners so we remove our
+ * internal references for a given event.
+ * @param ee EventEmitter instance
+ * @param original reference to the patched method
+ */
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ private _patchRemoveAllListeners(ee: EventEmitter, original: (...args: any[]) => any): any {
+ // eslint-disable-next-line @typescript-eslint/no-this-alias
+ const contextManager = this;
+ return function (this: never, event: string) {
+ const map = contextManager._getPatchMap(ee);
+ if (map !== undefined) {
+ if (arguments.length === 0) {
+ contextManager._createPatchMap(ee);
+ } else if (map[event] !== undefined) {
+ // eslint-disable-next-line @typescript-eslint/no-dynamic-delete
+ delete map[event];
+ }
+ }
+ // eslint-disable-next-line prefer-rest-params
+ return original.apply(this, arguments);
+ };
+ }
+
+ /**
+ * Patch methods on an event emitter instance that can add listeners so we
+ * can force them to propagate a given context.
+ * @param ee EventEmitter instance
+ * @param original reference to the patched method
+ * @param [context] context to propagate when calling listeners
+ */
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ private _patchAddListener(ee: EventEmitter, original: (...args: any[]) => any, context: Context): any {
+ // eslint-disable-next-line @typescript-eslint/no-this-alias
+ const contextManager = this;
+ return function (this: never, event: string, listener: Func<void>) {
+ /**
+ * This check is required to prevent double-wrapping the listener.
+ * The implementation for ee.once wraps the listener and calls ee.on.
+ * Without this check, we would wrap that wrapped listener.
+ * This causes an issue because ee.removeListener depends on the onceWrapper
+ * to properly remove the listener. If we wrap their wrapper, we break
+ * that detection.
+ */
+ if (contextManager._wrapped) {
+ return original.call(this, event, listener);
+ }
+ let map = contextManager._getPatchMap(ee);
+ if (map === undefined) {
+ map = contextManager._createPatchMap(ee);
+ }
+ let listeners = map[event];
+ if (listeners === undefined) {
+ listeners = new WeakMap();
+ map[event] = listeners;
+ }
+ const patchedListener = contextManager.bind(context, listener);
+ // store a weak reference of the user listener to ours
+ listeners.set(listener, patchedListener);
+
+ /**
+ * See comment at the start of this function for the explanation of this property.
+ */
+ contextManager._wrapped = true;
+ try {
+ return original.call(this, event, patchedListener);
+ } finally {
+ contextManager._wrapped = false;
+ }
+ };
+ }
+
+ /**
+ *
+ */
+ private _createPatchMap(ee: EventEmitter): PatchMap {
+ const map = Object.create(null);
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
+ (ee as any)[this._kOtListeners] = map;
+ return map;
+ }
+ /**
+ *
+ */
+ private _getPatchMap(ee: EventEmitter): PatchMap | undefined {
+ return (ee as never)[this._kOtListeners];
+ }
+
+ /**
+ *
+ */
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ private _bindFunction<T extends (...args: any[]) => any>(context: Context, target: T): T {
+ // eslint-disable-next-line @typescript-eslint/no-this-alias
+ const manager = this;
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ const contextWrapper = function (this: never, ...args: unknown[]): any {
+ return manager.with(context, () => target.apply(this, args));
+ };
+ Object.defineProperty(contextWrapper, 'length', {
+ enumerable: false,
+ configurable: true,
+ writable: false,
+ value: target.length,
+ });
+ /**
+ * It isn't possible to tell Typescript that contextWrapper is the same as T
+ * so we forced to cast as any here.
+ */
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ return contextWrapper as any;
+ }
+
+ public abstract active(): Context;
+
+ public abstract with<A extends unknown[], F extends (...args: A) => ReturnType<F>>(
+ context: Context,
+ fn: F,
+ thisArg?: ThisParameterType<F>,
+ ...args: A
+ ): ReturnType<F>;
+
+ public abstract enable(): this;
+
+ public abstract disable(): this;
+}
+
+/**
+ *
+ */
+export class AsyncLocalStorageContextManager extends AbstractAsyncHooksContextManager {
+ private _asyncLocalStorage: AsyncLocalStorage<Context>;
+
+ public constructor() {
+ super();
+
+ // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-explicit-any
+ const MaybeGlobalAsyncLocalStorage = (globalThis as any).AsyncLocalStorage;
+
+ if (!MaybeGlobalAsyncLocalStorage) {
+ DEBUG_BUILD &&
+ logger.warn(
+ "Tried to register AsyncLocalStorage async context strategy in a runtime that doesn't support AsyncLocalStorage.",
+ );
+ this._asyncLocalStorage = {
+ getStore() {
+ return undefined;
+ },
+ run(_store, callback, ...args) {
+ return callback.apply(this, args);
+ },
+ disable() {
+ // noop
+ },
+ };
+ } else {
+ this._asyncLocalStorage = new MaybeGlobalAsyncLocalStorage();
+ }
+ }
+
+ /**
+ *
+ */
+ public active(): Context {
+ return this._asyncLocalStorage.getStore() ?? ROOT_CONTEXT;
+ }
+
+ /**
+ *
+ */
+ public with<A extends unknown[], F extends (...args: A) => ReturnType<F>>(
+ context: Context,
+ fn: F,
+ thisArg?: ThisParameterType<F>,
+ ...args: A
+ ): ReturnType<F> {
+ const cb = thisArg == null ? fn : fn.bind(thisArg);
+ return this._asyncLocalStorage.run(context, cb as never, ...args);
+ }
+
+ /**
+ *
+ */
+ public enable(): this {
+ return this;
+ }
+
+ /**
+ *
+ */
+ public disable(): this {
+ this._asyncLocalStorage.disable();
+ return this;
+ }
+}