95 lines
4 KiB
TypeScript
95 lines
4 KiB
TypeScript
/**
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* Copyright 2018 Google Inc. All rights reserved.
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* Modifications copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { EventEmitter } from 'events';
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import { CRSession, CRConnection } from '../crConnection';
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import { debugError } from '../../helper';
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import { Protocol } from '../protocol';
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import { Events } from '../events';
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import * as types from '../../types';
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import * as js from '../../javascript';
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import * as console from '../../console';
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import { CRExecutionContext } from '../crExecutionContext';
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import { toConsoleMessageLocation, exceptionToError } from '../crProtocolHelper';
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import { ChromiumPage } from '../crPage';
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type AddToConsoleCallback = (type: string, args: js.JSHandle[], location: console.ConsoleMessageLocation) => void;
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type HandleExceptionCallback = (error: Error) => void;
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export class CRWorkers {
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private _workers = new Map<string, CRWorker>();
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constructor(client: CRSession, page: ChromiumPage, addToConsole: AddToConsoleCallback, handleException: HandleExceptionCallback) {
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client.on('Target.attachedToTarget', event => {
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if (event.targetInfo.type !== 'worker')
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return;
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const session = CRConnection.fromSession(client).session(event.sessionId);
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const worker = new CRWorker(session, event.targetInfo.url, addToConsole, handleException);
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this._workers.set(event.sessionId, worker);
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page.emit(Events.CRPage.WorkerCreated, worker);
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});
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client.on('Target.detachedFromTarget', event => {
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const worker = this._workers.get(event.sessionId);
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if (!worker)
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return;
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page.emit(Events.CRPage.WorkerDestroyed, worker);
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this._workers.delete(event.sessionId);
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});
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}
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list(): CRWorker[] {
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return Array.from(this._workers.values());
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}
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}
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export class CRWorker extends EventEmitter {
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private _client: CRSession;
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private _url: string;
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private _executionContextPromise: Promise<js.ExecutionContext>;
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private _executionContextCallback: (value?: js.ExecutionContext) => void;
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constructor(client: CRSession, url: string, addToConsole: AddToConsoleCallback, handleException: HandleExceptionCallback) {
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super();
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this._client = client;
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this._url = url;
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this._executionContextPromise = new Promise(x => this._executionContextCallback = x);
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let jsHandleFactory: (o: Protocol.Runtime.RemoteObject) => js.JSHandle;
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this._client.once('Runtime.executionContextCreated', async event => {
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jsHandleFactory = remoteObject => executionContext._createHandle(remoteObject);
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const executionContext = new js.ExecutionContext(new CRExecutionContext(client, event.context));
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this._executionContextCallback(executionContext);
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});
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// This might fail if the target is closed before we recieve all execution contexts.
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this._client.send('Runtime.enable', {}).catch(debugError);
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this._client.on('Runtime.consoleAPICalled', event => addToConsole(event.type, event.args.map(jsHandleFactory), toConsoleMessageLocation(event.stackTrace)));
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this._client.on('Runtime.exceptionThrown', exception => handleException(exceptionToError(exception.exceptionDetails)));
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}
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url(): string {
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return this._url;
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}
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evaluate: types.Evaluate = async (pageFunction, ...args) => {
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return (await this._executionContextPromise).evaluate(pageFunction, ...args as any);
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}
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evaluateHandle: types.EvaluateHandle = async (pageFunction, ...args) => {
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return (await this._executionContextPromise).evaluateHandle(pageFunction, ...args as any);
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}
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}
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