src/chrome/renderer/loadtimes_extension_bindings.cc

   1 // Copyright (c) 2012 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 #include "chrome/renderer/loadtimes_extension_bindings.h"
   6
   7 #include <math.h>
   8
   9 #include "base/time/time.h"
  10 #include "content/public/renderer/document_state.h"
  11 #include "net/http/http_response_info.h"
  12 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  13 #include "v8/include/v8.h"
  14
  15 using blink::WebDataSource;
  16 using blink::WebLocalFrame;
  17 using blink::WebNavigationType;
  18 using content::DocumentState;
  19
  20 // Values for CSI "tran" property
  21 const int kTransitionLink = 0;
  22 const int kTransitionForwardBack = 6;
  23 const int kTransitionOther = 15;
  24 const int kTransitionReload = 16;
  25
  26 namespace extensions_v8 {
  27
  28 static const char* const kLoadTimesExtensionName = "v8/LoadTimes";
  29
  30 class LoadTimesExtensionWrapper : public v8::Extension {
  31  public:
  32   // Creates an extension which adds a new function, chromium.GetLoadTimes()
  33   // This function returns an object containing the following members:
  34   // requestTime: The time the request to load the page was received
  35   // loadTime: The time the renderer started the load process
  36   // finishDocumentLoadTime: The time the document itself was loaded
  37   //                         (this is before the onload() method is fired)
  38   // finishLoadTime: The time all loading is done, after the onload()
  39   //                 method and all resources
  40   // navigationType: A string describing what user action initiated the load
  41   LoadTimesExtensionWrapper() :
  42     v8::Extension(kLoadTimesExtensionName,
  43       "var chrome;"
  44       "if (!chrome)"
  45       "  chrome = {};"
  46       "chrome.loadTimes = function() {"
  47       "  native function GetLoadTimes();"
  48       "  return GetLoadTimes();"
  49       "};"
  50       "chrome.csi = function() {"
  51       "  native function GetCSI();"
  52       "  return GetCSI();"
  53       "}") {}
  54
  55   v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
  56       v8::Isolate* isolate,
  57       v8::Handle<v8::String> name) override {
  58     if (name->Equals(v8::String::NewFromUtf8(isolate, "GetLoadTimes"))) {
  59       return v8::FunctionTemplate::New(isolate, GetLoadTimes);
  60     } else if (name->Equals(v8::String::NewFromUtf8(isolate, "GetCSI"))) {
  61       return v8::FunctionTemplate::New(isolate, GetCSI);
  62     }
  63     return v8::Handle<v8::FunctionTemplate>();
  64   }
  65
  66   static const char* GetNavigationType(WebNavigationType nav_type) {
  67     switch (nav_type) {
  68       case blink::WebNavigationTypeLinkClicked:
  69         return "LinkClicked";
  70       case blink::WebNavigationTypeFormSubmitted:
  71         return "FormSubmitted";
  72       case blink::WebNavigationTypeBackForward:
  73         return "BackForward";
  74       case blink::WebNavigationTypeReload:
  75         return "Reload";
  76       case blink::WebNavigationTypeFormResubmitted:
  77         return "Resubmitted";
  78       case blink::WebNavigationTypeOther:
  79         return "Other";
  80     }
  81     return "";
  82   }
  83
  84   static int GetCSITransitionType(WebNavigationType nav_type) {
  85     switch (nav_type) {
  86       case blink::WebNavigationTypeLinkClicked:
  87       case blink::WebNavigationTypeFormSubmitted:
  88       case blink::WebNavigationTypeFormResubmitted:
  89         return kTransitionLink;
  90       case blink::WebNavigationTypeBackForward:
  91         return kTransitionForwardBack;
  92       case blink::WebNavigationTypeReload:
  93         return kTransitionReload;
  94       case blink::WebNavigationTypeOther:
  95         return kTransitionOther;
  96     }
  97     return kTransitionOther;
  98   }
  99
 100   static void GetLoadTimes(const v8::FunctionCallbackInfo<v8::Value>& args) {
 101     WebLocalFrame* frame = WebLocalFrame::frameForCurrentContext();
 102     if (frame) {
 103       WebDataSource* data_source = frame->dataSource();
 104       if (data_source) {
 105         DocumentState* document_state =
 106             DocumentState::FromDataSource(data_source);
 107         v8::Isolate* isolate = args.GetIsolate();
 108         v8::Local<v8::Object> load_times = v8::Object::New(isolate);
 109         load_times->Set(
 110             v8::String::NewFromUtf8(isolate, "requestTime"),
 111             v8::Number::New(isolate,
 112                             document_state->request_time().ToDoubleT()));
 113         load_times->Set(
 114             v8::String::NewFromUtf8(isolate, "startLoadTime"),
 115             v8::Number::New(isolate,
 116                             document_state->start_load_time().ToDoubleT()));
 117         load_times->Set(
 118             v8::String::NewFromUtf8(isolate, "commitLoadTime"),
 119             v8::Number::New(isolate,
 120                             document_state->commit_load_time().ToDoubleT()));
 121         load_times->Set(
 122             v8::String::NewFromUtf8(isolate, "finishDocumentLoadTime"),
 123             v8::Number::New(
 124                 isolate,
 125                 document_state->finish_document_load_time().ToDoubleT()));
 126         load_times->Set(
 127             v8::String::NewFromUtf8(isolate, "finishLoadTime"),
 128             v8::Number::New(isolate,
 129                             document_state->finish_load_time().ToDoubleT()));
 130         load_times->Set(
 131             v8::String::NewFromUtf8(isolate, "firstPaintTime"),
 132             v8::Number::New(isolate,
 133                             document_state->first_paint_time().ToDoubleT()));
 134         load_times->Set(
 135             v8::String::NewFromUtf8(isolate, "firstPaintAfterLoadTime"),
 136             v8::Number::New(
 137                 isolate,
 138                 document_state->first_paint_after_load_time().ToDoubleT()));
 139         load_times->Set(
 140             v8::String::NewFromUtf8(isolate, "navigationType"),
 141             v8::String::NewFromUtf8(
 142                 isolate, GetNavigationType(data_source->navigationType())));
 143         load_times->Set(
 144             v8::String::NewFromUtf8(isolate, "wasFetchedViaSpdy"),
 145             v8::Boolean::New(isolate, document_state->was_fetched_via_spdy()));
 146         load_times->Set(
 147             v8::String::NewFromUtf8(isolate, "wasNpnNegotiated"),
 148             v8::Boolean::New(isolate, document_state->was_npn_negotiated()));
 149         load_times->Set(
 150             v8::String::NewFromUtf8(isolate, "npnNegotiatedProtocol"),
 151             v8::String::NewFromUtf8(
 152                 isolate, document_state->npn_negotiated_protocol().c_str()));
 153         load_times->Set(
 154             v8::String::NewFromUtf8(isolate, "wasAlternateProtocolAvailable"),
 155             v8::Boolean::New(
 156                 isolate, document_state->was_alternate_protocol_available()));
 157         load_times->Set(v8::String::NewFromUtf8(isolate, "connectionInfo"),
 158                         v8::String::NewFromUtf8(
 159                             isolate,
 160                             net::HttpResponseInfo::ConnectionInfoToString(
 161                                 document_state->connection_info()).c_str()));
 162         args.GetReturnValue().Set(load_times);
 163         return;
 164       }
 165     }
 166     args.GetReturnValue().SetNull();
 167   }
 168
 169   static void GetCSI(const v8::FunctionCallbackInfo<v8::Value>& args) {
 170     WebLocalFrame* frame = WebLocalFrame::frameForCurrentContext();
 171     if (frame) {
 172       WebDataSource* data_source = frame->dataSource();
 173       if (data_source) {
 174         DocumentState* document_state =
 175             DocumentState::FromDataSource(data_source);
 176         v8::Isolate* isolate = args.GetIsolate();
 177         v8::Local<v8::Object> csi = v8::Object::New(isolate);
 178         base::Time now = base::Time::Now();
 179         base::Time start = document_state->request_time().is_null() ?
 180             document_state->start_load_time() :
 181             document_state->request_time();
 182         base::Time onload = document_state->finish_document_load_time();
 183         base::TimeDelta page = now - start;
 184         csi->Set(v8::String::NewFromUtf8(isolate, "startE"),
 185                  v8::Number::New(isolate, floor(start.ToDoubleT() * 1000)));
 186         csi->Set(v8::String::NewFromUtf8(isolate, "onloadT"),
 187                  v8::Number::New(isolate, floor(onload.ToDoubleT() * 1000)));
 188         csi->Set(v8::String::NewFromUtf8(isolate, "pageT"),
 189                  v8::Number::New(isolate, page.InMillisecondsF()));
 190         csi->Set(
 191             v8::String::NewFromUtf8(isolate, "tran"),
 192             v8::Number::New(
 193                 isolate, GetCSITransitionType(data_source->navigationType())));
 194
 195         args.GetReturnValue().Set(csi);
 196         return;
 197       }
 198     }
 199     args.GetReturnValue().SetNull();
 200     return;
 201   }
 202 };
 203
 204 v8::Extension* LoadTimesExtension::Get() {
 205   return new LoadTimesExtensionWrapper();
 206 }
 207
 208 }  // namespace extensions_v8