53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
/**
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* Copyright (c) 2015-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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const exec = require('child_process').exec;
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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 !== '/systrace') {
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next();
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return;
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}
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console.log('Dumping profile information...');
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var dumpName = '/tmp/dump_' + Date.now() + '.json';
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var prefix = process.env.TRACE_VIEWER_PATH || '';
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var cmd = path.join(prefix, 'trace2html') + ' ' + dumpName;
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fs.writeFileSync(dumpName, req.rawBody);
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exec(cmd, function(error) {
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if (error) {
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if (error.code === 127) {
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var response = '\n** Failed executing `' + cmd + '` **\n\n' +
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'Google trace-viewer is required to visualize the data, ' +
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'You can install it with `brew install trace2html`\n\n' +
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'NOTE: Your profile data was kept at:\n' + dumpName;
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console.log(response);
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res.end(response);
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} else {
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console.error(error);
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res.end('Unknown error: ' + error.message);
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}
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return;
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} else {
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exec('rm ' + dumpName);
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exec('open ' + dumpName.replace(/json$/, 'html'), function(err) {
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if (err) {
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console.error(err);
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res.end(err.message);
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} else {
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res.end();
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}
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});
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}
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});
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};
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