puppeteer/lib/Worker.js
Joel Einbinder a058468948 feat: roll Chromium to r564778 (#2681)
This roll includes:
- https://chromium-review.googlesource.com/c/v8/v8/+/1086372 - [inspector] postpone API interrupts during creation of injected script

This fixes worker flakiness.

Fixes #2632
2018-06-06 09:48:56 -05:00

60 lines
2.0 KiB
JavaScript

/**
* Copyright 2018 Google Inc. All rights reserved.
*
* 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
*
* http://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.
*/
const EventEmitter = require('events');
const {helper, debugError} = require('./helper');
const {ExecutionContext, JSHandle} = require('./ExecutionContext');
class Worker extends EventEmitter {
/**
* @param {Puppeteer.CDPSession} client
* @param {string} url
* @param {function(!Protocol.Log.entryAddedPayload)} logEntryAdded
*/
constructor(client, url, logEntryAdded) {
super();
this._client = client;
this._url = url;
this._executionContextPromise = new Promise(x => this._executionContextCallback = x);
this._client.once('Runtime.executionContextCreated', async event => {
const jsHandleFactory = remoteObject => new JSHandle(executionContext, client, remoteObject);
const executionContext = new ExecutionContext(client, event.context, jsHandleFactory, null);
this._executionContextCallback(executionContext);
});
// This might fail if the target is closed before we recieve all execution contexts.
this._client.send('Runtime.enable', {}).catch(debugError);
this._client.on('Log.entryAdded', logEntryAdded);
this._client.send('Log.enable', {}).catch(debugError);
}
/**
* @return {string}
*/
url() {
return this._url;
}
/**
* @return {!Promise<ExecutionContext>}
*/
async executionContext() {
return this._executionContextPromise;
}
}
module.exports = Worker;
helper.tracePublicAPI(Worker);