289 lines
8.4 KiB
JavaScript
Executable File
289 lines
8.4 KiB
JavaScript
Executable File
#!/usr/bin/env node
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/**
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* Copyright 2018 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 URL = require('url');
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const debug = require('debug');
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const pptr = require('..');
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const browserFetcher = pptr.createBrowserFetcher();
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const path = require('path');
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const fs = require('fs');
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const { fork, spawn, execSync } = require('child_process');
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const COLOR_RESET = '\x1b[0m';
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const COLOR_RED = '\x1b[31m';
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const COLOR_GREEN = '\x1b[32m';
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const COLOR_YELLOW = '\x1b[33m';
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const argv = require('minimist')(process.argv.slice(2), {});
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const help = `
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Usage:
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node bisect.js --good <revision> --bad <revision> <script>
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Parameters:
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--good revision that is known to be GOOD, defaults to the chromium revision in src/revision.ts in the main branch
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--bad revision that is known to be BAD, defaults to the chromium revision in src/revision.ts
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--no-cache do not keep downloaded Chromium revisions
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--unit-test pattern that identifies a unit tests that should be checked
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--script path to a script that returns non-zero code for BAD revisions and 0 for good
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Example:
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node utils/bisect.js --unit-test test
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node utils/bisect.js --good 577361 --bad 599821 --script simple.js
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node utils/bisect.js --good 577361 --bad 599821 --unit-test test
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`;
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if (argv.h || argv.help) {
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console.log(help);
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process.exit(0);
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}
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if (typeof argv.good !== 'number') {
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argv.good = getChromiumRevision('main');
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if (typeof argv.good !== 'number') {
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console.log(
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COLOR_RED +
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'ERROR: Could not parse current Chromium revision' +
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COLOR_RESET
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);
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console.log(help);
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process.exit(1);
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}
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}
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if (typeof argv.bad !== 'number') {
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argv.bad = getChromiumRevision();
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if (typeof argv.bad !== 'number') {
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console.log(
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COLOR_RED +
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'ERROR: Could not parse Chromium revision in the main branch' +
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COLOR_RESET
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);
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console.log(help);
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process.exit(1);
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}
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}
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if (!argv.script && !argv['unit-test']) {
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console.log(
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COLOR_RED +
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'ERROR: Expected to be given a script or a unit test to run' +
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COLOR_RESET
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);
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console.log(help);
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process.exit(1);
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}
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const scriptPath = argv.script ? path.resolve(argv.script) : null;
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if (argv.script && !fs.existsSync(scriptPath)) {
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console.log(
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COLOR_RED +
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'ERROR: Expected to be given a path to a script to run' +
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COLOR_RESET
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);
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console.log(help);
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process.exit(1);
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}
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(async (scriptPath, good, bad, pattern, noCache) => {
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const span = Math.abs(good - bad);
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console.log(
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`Bisecting ${COLOR_YELLOW}${span}${COLOR_RESET} revisions in ${COLOR_YELLOW}~${
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span.toString(2).length
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}${COLOR_RESET} iterations`
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);
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while (true) {
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const middle = Math.round((good + bad) / 2);
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const revision = await findDownloadableRevision(middle, good, bad);
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if (!revision || revision === good || revision === bad) break;
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let info = browserFetcher.revisionInfo(revision);
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const shouldRemove = noCache && !info.local;
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info = await downloadRevision(revision);
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const exitCode = await (pattern
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? runUnitTest(pattern, info)
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: runScript(scriptPath, info));
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if (shouldRemove) await browserFetcher.remove(revision);
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let outcome;
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if (exitCode) {
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bad = revision;
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outcome = COLOR_RED + 'BAD' + COLOR_RESET;
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} else {
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good = revision;
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outcome = COLOR_GREEN + 'GOOD' + COLOR_RESET;
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}
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const span = Math.abs(good - bad);
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let fromText = '';
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let toText = '';
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if (good < bad) {
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fromText = COLOR_GREEN + good + COLOR_RESET;
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toText = COLOR_RED + bad + COLOR_RESET;
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} else {
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fromText = COLOR_RED + bad + COLOR_RESET;
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toText = COLOR_GREEN + good + COLOR_RESET;
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}
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console.log(
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`- ${COLOR_YELLOW}r${revision}${COLOR_RESET} was ${outcome}. Bisecting [${fromText}, ${toText}] - ${COLOR_YELLOW}${span}${COLOR_RESET} revisions and ${COLOR_YELLOW}~${
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span.toString(2).length
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}${COLOR_RESET} iterations`
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);
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}
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const [fromSha, toSha] = await Promise.all([
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revisionToSha(Math.min(good, bad)),
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revisionToSha(Math.max(good, bad)),
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]);
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console.log(
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`RANGE: https://chromium.googlesource.com/chromium/src/+log/${fromSha}..${toSha}`
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);
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})(scriptPath, argv.good, argv.bad, argv['unit-test'], argv['no-cache']);
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function runScript(scriptPath, revisionInfo) {
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const log = debug('bisect:runscript');
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log('Running script');
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const child = fork(scriptPath, [], {
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stdio: ['inherit', 'inherit', 'inherit', 'ipc'],
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env: {
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...process.env,
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PUPPETEER_EXECUTABLE_PATH: revisionInfo.executablePath,
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},
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});
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return new Promise((resolve, reject) => {
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child.on('error', (err) => reject(err));
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child.on('exit', (code) => resolve(code));
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});
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}
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function runUnitTest(pattern, revisionInfo) {
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const log = debug('bisect:rununittest');
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log('Running unit test');
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const child = spawn('npm run unit', ['--', '-g', pattern], {
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stdio: ['inherit', 'inherit', 'inherit', 'ipc'],
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shell: true,
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env: {
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...process.env,
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PUPPETEER_EXECUTABLE_PATH: revisionInfo.executablePath,
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},
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});
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return new Promise((resolve, reject) => {
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child.on('error', (err) => reject(err));
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child.on('exit', (code) => resolve(code));
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});
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}
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async function downloadRevision(revision) {
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const log = debug('bisect:download');
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log(`Downloading ${revision}`);
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let progressBar = null;
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let lastDownloadedBytes = 0;
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return await browserFetcher.download(
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revision,
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(downloadedBytes, totalBytes) => {
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if (!progressBar) {
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const ProgressBar = require('progress');
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progressBar = new ProgressBar(
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`- downloading Chromium r${revision} - ${toMegabytes(
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totalBytes
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)} [:bar] :percent :etas `,
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{
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complete: '=',
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incomplete: ' ',
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width: 20,
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total: totalBytes,
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}
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);
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}
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const delta = downloadedBytes - lastDownloadedBytes;
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lastDownloadedBytes = downloadedBytes;
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progressBar.tick(delta);
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}
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);
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function toMegabytes(bytes) {
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const mb = bytes / 1024 / 1024;
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return `${Math.round(mb * 10) / 10} Mb`;
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}
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}
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async function findDownloadableRevision(rev, from, to) {
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const log = debug('bisect:findrev');
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const min = Math.min(from, to);
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const max = Math.max(from, to);
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log(`Looking around ${rev} from [${min}, ${max}]`);
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if (await browserFetcher.canDownload(rev)) return rev;
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let down = rev;
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let up = rev;
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while (min <= down || up <= max) {
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const [downOk, upOk] = await Promise.all([
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down > min ? probe(--down) : Promise.resolve(false),
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up < max ? probe(++up) : Promise.resolve(false),
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]);
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if (downOk) return down;
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if (upOk) return up;
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}
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return null;
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async function probe(rev) {
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const result = await browserFetcher.canDownload(rev);
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log(` ${rev} - ${result ? 'OK' : 'missing'}`);
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return result;
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}
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}
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async function revisionToSha(revision) {
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const json = await fetchJSON(
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'https://cr-rev.appspot.com/_ah/api/crrev/v1/redirect/' + revision
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);
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return json.git_sha;
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}
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function fetchJSON(url) {
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return new Promise((resolve, reject) => {
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const agent = url.startsWith('https://')
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? require('https')
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: require('http');
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const options = URL.parse(url);
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options.method = 'GET';
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options.headers = {
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'Content-Type': 'application/json',
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};
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const req = agent.request(options, function (res) {
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let result = '';
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res.setEncoding('utf8');
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res.on('data', (chunk) => (result += chunk));
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res.on('end', () => resolve(JSON.parse(result)));
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});
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req.on('error', (err) => reject(err));
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req.end();
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});
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}
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function getChromiumRevision(gitRevision = null) {
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const fileName = 'src/revisions.ts';
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const command = gitRevision
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? `git show ${gitRevision}:${fileName}`
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: `cat ${fileName}`;
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const result = execSync(command, {
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encoding: 'utf8',
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shell: true,
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});
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const m = result.match(/chromium: '(\d+)'/);
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if (!m) return null;
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return parseInt(m[1], 10);
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}
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