sitespeed.io/lib/headless/headlessTiming.js

60 lines
1.6 KiB
JavaScript

/**
* Sitespeed.io - How speedy is your site? (https://www.sitespeed.io)
* Copyright (c) 2014, Peter Hedenskog, Tobias Lidskog
* and other contributors
* Released under the Apache 2.0 License
*/
'use strict';
var Stats = require('fast-stats').Stats,
util = require('../util/util');
var timeMetrics = ['domainLookupTime', 'redirectionTime', 'serverConnectionTime', 'serverResponseTime',
'pageDownloadTime', 'domInteractiveTime', 'domContentLoadedTime', 'pageLoadTime', 'frontEndTime', 'backEndTime'
];
function HeadlessTiming() {
var self = this;
timeMetrics.forEach(function(metric) {
self[metric] = new Stats();
});
this.runs = [];
}
HeadlessTiming.prototype.add = function(headlessTimings) {
var self = this;
this.runs.push(headlessTimings);
Object.keys(headlessTimings.timings).forEach(function(timing) {
if (self.hasOwnProperty(timing)) {
self[timing].push(headlessTimings.timings[timing]);
}
});
if (headlessTimings.userTimings.marks) {
headlessTimings.userTimings.marks.forEach(function(mark) {
if (self.hasOwnProperty(mark.name)) {
self[mark.name].push(mark.startTime);
} else {
self[mark.name] = new Stats().push(mark.startTime);
timeMetrics.push(mark.name);
}
});
}
};
HeadlessTiming.prototype.getStats = function() {
var result = [];
var self = this;
timeMetrics.forEach(function(metric) {
result.push({
id: metric,
stats: util.getStatisticsObject(self[metric], 0),
unit: 'milliseconds'
});
});
return result;
};
module.exports = HeadlessTiming;