Index: third_party/WebKit/Source/devtools/front_end/sdk/ServerTiming.js |
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/ServerTiming.js b/third_party/WebKit/Source/devtools/front_end/sdk/ServerTiming.js |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ab06bc20cfab3c5e0cb5828f5f8fc3abc233fda9 |
--- /dev/null |
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/ServerTiming.js |
@@ -0,0 +1,57 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+/** |
+ * @constructor |
+ * @param {string} metric |
+ * @param {number} value |
+ * @param {string} description |
+ */ |
+WebInspector.ServerTiming = function(metric, value, description) |
+{ |
+ this.metric = metric; |
+ this.value = value; |
+ this.description = description; |
+} |
+ |
+/** |
+ * @param {!Array<!WebInspector.NetworkRequest.NameValue>} headers |
+ * @return {?Array<!WebInspector.ServerTiming>} |
+ */ |
+WebInspector.ServerTiming.parseHeaders = function(headers) |
+{ |
+ var rawServerTimingHeaders = headers.filter(item => item.name.toLowerCase() === "server-timing"); |
+ if (!rawServerTimingHeaders.length) |
+ return null; |
+ |
+ /** |
+ * @param {?string} valueString |
+ * @return {?Array<!WebInspector.ServerTiming>} |
+ */ |
+ function createFromHeaderValue(valueString) |
+ { |
+ // https://www.w3.org/TR/server-timing/ |
+ var serverTimingMetricRegExp = /[ \t]*([\!\#\$\%\&\'\*\+\-\.\^\_\`\|\~0-9A-Za-z]+)[ \t]*(?:=[ \t]*(\d+(?:\.\d+)?))?[ \t]*(?:;[ \t]*(?:"([^"]+)"|([\!\#\$\%\&\'\*\+\-\.\^\_\`\|\~0-9A-Za-z]+)))?[ \t]*(?:,(.*))?/; |
+ var metricMatch; |
+ var result = []; |
+ while (valueString && (metricMatch = serverTimingMetricRegExp.exec(valueString))) { |
+ var metric = metricMatch[1]; |
+ var value = metricMatch[2]; |
+ var description = metricMatch[3] || metricMatch[4]; |
+ if (value !== null) |
+ value = Math.abs(parseFloat(metricMatch[2])); |
+ valueString = metricMatch[5]; // comma delimited headers |
+ result.push(new WebInspector.ServerTiming(metric, value, description)); |
+ } |
+ return result; |
+ } |
+ |
+ var serverTimings = rawServerTimingHeaders.reduce((memo, header) => { |
+ var timing = createFromHeaderValue(header.value); |
+ Array.prototype.push.apply(memo, timing); |
+ return memo; |
+ }, []); |
+ serverTimings.sort((a, b) => a.metric.toLowerCase().compareTo(b.metric.toLowerCase())); |
+ return serverTimings; |
+} |