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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 /** | |
6 * @constructor | |
7 * @param {!WebInspector.Target} target | |
caseq
2016/08/08 17:12:56
why pass target?
| |
8 * @param {string} metric | |
9 * @param {number} value | |
10 * @param {string} description | |
11 */ | |
12 WebInspector.ServerTiming = function(target, metric, value, description) | |
13 { | |
14 this._target = target; | |
caseq
2016/08/08 17:12:56
let's nuke it.
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15 this.metric = metric; | |
16 this.value = value; | |
17 this.description = description; | |
18 } | |
19 | |
20 /** | |
21 * @param {!WebInspector.Target} target | |
caseq
2016/08/08 17:12:56
ditto.
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22 * @param {!Array<!WebInspector.NetworkRequest.NameValue>} headers | |
23 * @return {?Array<!WebInspector.ServerTiming>} | |
24 */ | |
25 WebInspector.ServerTiming.parseHeaders = function(target, headers) | |
26 { | |
27 var rawServerTimingHeaders = headers.filter(item => item.name.toLowerCase() === "server-timing"); | |
28 if (!rawServerTimingHeaders.length) | |
29 return null; | |
30 | |
31 /** | |
32 * @param {?string} valueString | |
33 * @return {?Array<!WebInspector.ServerTiming>} | |
34 */ | |
35 function createFromHeaderValue(valueString) | |
36 { | |
37 // https://www.w3.org/TR/server-timing/ | |
38 var serverTimingMetricRegExp = /[ \t]*([\!\#\$\%\&\'\*\+\-\.\^\_\`\|\~0- 9A-Za-z]+)[ \t]*(?:=[ \t]*(\d+(?:\.\d+)?))?[ \t]*(?:;[ \t]*(?:"([^"]+)"|([\!\#\$ \%\&\'\*\+\-\.\^\_\`\|\~0-9A-Za-z]+)))?[ \t]*(?:,(.*))?/; | |
39 var metricMatch; | |
40 var result = []; | |
41 while (valueString && (metricMatch = serverTimingMetricRegExp.exec(value String))) { | |
42 var metric = metricMatch[1]; | |
43 var value = metricMatch[2]; | |
44 var description = metricMatch[3] || metricMatch[4]; | |
45 if (value !== null) | |
46 value = Math.abs(parseFloat(metricMatch[2])); | |
47 valueString = metricMatch[5]; // comma delimited headers | |
48 result.push(new WebInspector.ServerTiming(target, metric, value, des cription)); | |
49 } | |
50 return result; | |
51 } | |
52 | |
53 var serverTimings = rawServerTimingHeaders.reduce((memo, header) => { | |
54 var timing = createFromHeaderValue(header.value); | |
55 Array.prototype.push.apply(memo, timing); | |
56 return memo; | |
57 }, []); | |
58 serverTimings.sort((a, b) => a.metric.toLowerCase().compareTo(b.metric.toLow erCase())); | |
59 return serverTimings; | |
60 } | |
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