mirror of
https://github.com/facebook/react-native.git
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Charles Dick
54f867f0d6
Reviewed By: bestander Differential Revision: D3642188 fbshipit-source-id: c9a4699b2a0d60eb5961333dec45941085e19324
46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
/**
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* Copyright (c) 2016-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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'use strict';
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/*eslint no-console-disallow: "off"*/
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const spawn = require('child_process').spawn;
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const fs = require('fs');
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const path = require('path');
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module.exports = function(req, res, next) {
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if (req.url !== '/jscheapcaptureupload') {
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next();
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return;
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}
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console.log('Downloading Heap Capture');
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var preload = path.join(__dirname, 'heapCapture/preLoadedCapture.js');
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fs.writeFileSync(preload, 'var preLoadedCapture = ');
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fs.appendFileSync(preload, req.rawBody);
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fs.appendFileSync(preload, ';');
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res.end();
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console.log('Packaging Trace');
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var captureHtml = path.join(__dirname, 'heapCapture/captures/capture_' + Date.now() + '.html');
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var capture = fs.createWriteStream(captureHtml);
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var inliner = spawn(
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'inliner',
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['--nocompress', 'heapCapture.html'],
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{ cwd: path.join(__dirname, '/heapCapture/'),
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stdio: [ process.stdin, 'pipe', process.stderr ],
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});
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inliner.stdout.pipe(capture);
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inliner.on('exit', (code, signal) => {
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if (code === 0) {
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console.log('Heap capture written to: ' + captureHtml);
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} else {
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console.error('Error processing heap capture, inliner returned code: ' + code);
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}
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});
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};
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