66 lines
2.4 KiB
JavaScript
66 lines
2.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Tracing = void 0;
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/**
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* Copyright 2017 Google Inc. All rights reserved.
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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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const helper_1 = require("./helper");
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class Tracing {
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constructor(client) {
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this._recording = false;
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this._path = '';
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this._client = client;
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}
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async start(options = {}) {
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helper_1.assert(!this._recording, 'Cannot start recording trace while already recording trace.');
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const defaultCategories = [
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'-*',
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'devtools.timeline',
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'v8.execute',
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'disabled-by-default-devtools.timeline',
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'disabled-by-default-devtools.timeline.frame',
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'toplevel',
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'blink.console',
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'blink.user_timing',
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'latencyInfo',
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'disabled-by-default-devtools.timeline.stack',
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'disabled-by-default-v8.cpu_profiler',
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'disabled-by-default-v8.cpu_profiler.hires',
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];
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const { path = null, screenshots = false, categories = defaultCategories, } = options;
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if (screenshots)
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categories.push('disabled-by-default-devtools.screenshot');
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this._path = path;
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this._recording = true;
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await this._client.send('Tracing.start', {
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transferMode: 'ReturnAsStream',
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categories: categories.join(','),
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});
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}
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async stop() {
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let fulfill;
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const contentPromise = new Promise((x) => (fulfill = x));
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this._client.once('Tracing.tracingComplete', (event) => {
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helper_1.helper
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.readProtocolStream(this._client, event.stream, this._path)
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.then(fulfill);
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});
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await this._client.send('Tracing.end');
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this._recording = false;
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return contentPromise;
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}
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}
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exports.Tracing = Tracing;
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