variations_service.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/metrics/variations/variations_service.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <set> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/build_time.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/metrics/histogram.h" 12868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/metrics/sparse_histogram.h" 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/prefs/pref_registry_simple.h" 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/prefs/pref_service.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/version.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/browser_process.h" 174e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "chrome/browser/network_time/network_time_tracker.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/chrome_switches.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/pref_names.h" 205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "components/user_prefs/pref_registry_syncable.h" 2158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "components/variations/proto/variations_seed.pb.h" 22424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)#include "components/variations/variations_seed_processor.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/browser_thread.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/load_flags.h" 25868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "net/base/net_errors.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/network_change_notifier.h" 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/base/url_util.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_response_headers.h" 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/http/http_status_code.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_util.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_fetcher.h" 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_request_status.h" 33f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "ui/base/device_form_factor.h" 34eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "url/gurl.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 37c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "chrome/browser/chromeos/settings/cros_settings.h" 38c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 39c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace chrome_variations { 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Default server of Variations seed info. 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDefaultVariationsServerURL[] = 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "https://clients4.google.com/chrome-variations/seed"; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kMaxRetrySeedFetch = 5; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(mad): To be removed when we stop updating the NetworkTimeTracker. 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// For the HTTP date headers, the resolution of the server time is 1 second. 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const int64 kServerTimeResolutionMs = 1000; 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Wrapper around channel checking, used to enable channel mocking for 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// testing. If the current browser channel is not UNKNOWN, this will return 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// that channel value. Otherwise, if the fake channel flag is provided, this 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// will return the fake channel. Failing that, this will return the UNKNOWN 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// channel. 58ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben MurdochStudy_Channel GetChannelForVariations() { 59ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch switch (chrome::VersionInfo::GetChannel()) { 60ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_CANARY: 61ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_CANARY; 62ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_DEV: 63ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_DEV; 64ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_BETA: 65ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_BETA; 66ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_STABLE: 67ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_STABLE; 68ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_UNKNOWN: 69ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch break; 70ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 71ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string forced_channel = 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) switches::kFakeVariationsChannel); 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (forced_channel == "stable") 75ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_STABLE; 76ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "beta") 77ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_BETA; 78ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "dev") 79ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_DEV; 80ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "canary") 81ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_CANARY; 82ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DVLOG(1) << "Invalid channel provided: " << forced_channel; 83ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_UNKNOWN; 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 86c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Returns a string that will be used for the value of the 'osname' URL param 87c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// to the variations server. 88c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)std::string GetPlatformString() { 89c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_WIN) 90c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "win"; 9190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#elif defined(OS_IOS) 9290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return "ios"; 93c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_MACOSX) 94c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "mac"; 95c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_CHROMEOS) 96c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "chromeos"; 97c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_ANDROID) 98c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "android"; 99c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_LINUX) || defined(OS_BSD) || defined(OS_SOLARIS) 100c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Default BSD and SOLARIS to Linux to not break those builds, although these 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // platforms are not officially supported by Chrome. 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "linux"; 103c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 104c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#error Unknown platform 105c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 106c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 107c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Gets the restrict parameter from |policy_pref_service| or from Chrome OS 1095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// settings in the case of that platform. 1105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)std::string GetRestrictParameterPref(PrefService* policy_pref_service) { 111c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::string parameter; 112c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 113c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::CrosSettings::Get()->GetString( 114c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::kVariationsRestrictParameter, ¶meter); 115c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 1165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (policy_pref_service) { 1175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) parameter = 1185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service->GetString(prefs::kVariationsRestrictParameter); 1195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 120c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 121c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return parameter; 122c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 123c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 124868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum ResourceRequestsAllowedState { 125868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED, 126868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED, 127868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_NOTIFIED, 128f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_EULA_NOT_ACCEPTED, 129f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_NETWORK_DOWN, 130f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_COMMAND_LINE_DISABLED, 131868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE, 132868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 133868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 134868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Records UMA histogram with the current resource requests allowed state. 135868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)void RecordRequestsAllowedHistogram(ResourceRequestsAllowedState state) { 136868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Variations.ResourceRequestsAllowed", state, 137868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE); 138868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)} 139868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 140f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Converts ResourceRequestAllowedNotifier::State to the corresponding 141f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// ResourceRequestsAllowedState value. 142f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)ResourceRequestsAllowedState ResourceRequestStateToHistogramValue( 143f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) ResourceRequestAllowedNotifier::State state) { 144f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) switch (state) { 145f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_EULA_NOT_ACCEPTED: 146f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_EULA_NOT_ACCEPTED; 147f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_NETWORK_DOWN: 148f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_NETWORK_DOWN; 149f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_COMMAND_LINE_DISABLED: 150f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_COMMAND_LINE_DISABLED; 151f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::ALLOWED: 1525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return RESOURCE_REQUESTS_ALLOWED; 153f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 154f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) NOTREACHED(); 155f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED; 156f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 157f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 1587dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 159f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Get current form factor and convert it from enum DeviceFormFactor to enum 160f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Study_FormFactor. 161f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)Study_FormFactor GetCurrentFormFactor() { 162f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) switch (ui::GetDeviceFormFactor()) { 163f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_PHONE: 164f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_PHONE; 165f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_TABLET: 166f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_TABLET; 167f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_DESKTOP: 168f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_DESKTOP; 169f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 170f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) NOTREACHED(); 171f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_DESKTOP; 172f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 173f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)VariationsService::VariationsService(PrefService* local_state) 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : local_state_(local_state), 1785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service_(local_state), 1795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) seed_store_(local_state), 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 1817d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_( 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new ResourceRequestAllowedNotifier) { 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 187c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)VariationsService::VariationsService(ResourceRequestAllowedNotifier* notifier, 188c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) PrefService* local_state) 189c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) : local_state_(local_state), 1905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service_(local_state), 1915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) seed_store_(local_state), 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 1937d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_(notifier) { 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)VariationsService::~VariationsService() { 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool VariationsService::CreateTrialsFromSeed() { 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = true; 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) VariationsSeed seed; 2055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!seed_store_.LoadSeed(&seed)) 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int64 date_value = local_state_->GetInt64(prefs::kVariationsSeedDate); 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time seed_date = base::Time::FromInternalValue(date_value); 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time build_time = base::GetBuildTime(); 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Use the build time for date checks if either the seed date is invalid or 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the build time is newer than the seed date. 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Time reference_date = seed_date; 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (seed_date.is_null() || seed_date < build_time) 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reference_date = build_time; 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const chrome::VersionInfo current_version_info; 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!current_version_info.is_valid()) 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 221ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const base::Version current_version(current_version_info.Version()); 222ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!current_version.IsValid()) 223ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return false; 224ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 225558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch VariationsSeedProcessor().CreateTrialsFromSeed( 226558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch seed, g_browser_process->GetApplicationLocale(), reference_date, 227f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) current_version, GetChannelForVariations(), GetCurrentFormFactor()); 2282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the "freshness" of the seed that was just used. The freshness is the 2302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // time between the last successful seed download and now. 2312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int64 last_fetch_time_internal = 2322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->GetInt64(prefs::kVariationsLastFetchTime); 2332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (last_fetch_time_internal) { 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::Time now = base::Time::Now(); 2352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::TimeDelta delta = 2362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) now - base::Time::FromInternalValue(last_fetch_time_internal); 2372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the value in number of minutes. 2382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.SeedFreshness", delta.InMinutes(), 2392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1, base::TimeDelta::FromDays(30).InMinutes(), 50); 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::StartRepeatedVariationsSeedFetch() { 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Initialize the Variations server URL. 2495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) variations_server_url_ = GetVariationsServerURL(policy_pref_service_); 2505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that |CreateTrialsFromSeed| was called, which is necessary to 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // retrieve the serial number that will be sent to the server. 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(create_trials_from_seed_called_); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(!request_scheduler_.get()); 256c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Note that the act of instantiating the scheduler will start the fetch, if 257c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // the scheduler deems appropriate. Using Unretained is fine here since the 258c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // lifespan of request_scheduler_ is guaranteed to be shorter than that of 259c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // this service. 260c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_.reset(VariationsRequestScheduler::Create( 261c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Bind(&VariationsService::FetchVariationsSeed, 262c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Unretained(this)), local_state_)); 263c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Start(); 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2665d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// TODO(rkaplow): Handle this and the similar event in metrics_service by 2675d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// observing an 'OnAppEnterForeground' event in RequestScheduler instead of 2685d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// requiring the frontend code to notify each service individually. Since the 2695d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// scheduler will handle it directly the VariationService shouldn't need to 2705d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// know details of this anymore. 2715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VariationsService::OnAppEnterForeground() { 2725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) request_scheduler_->OnAppEnterForeground(); 2735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 2745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 2765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)GURL VariationsService::GetVariationsServerURL( 2775d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PrefService* policy_pref_service) { 2782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string server_url_string(CommandLine::ForCurrentProcess()-> 2792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetSwitchValueASCII(switches::kVariationsServerURL)); 2802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (server_url_string.empty()) 2812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) server_url_string = kDefaultVariationsServerURL; 2822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GURL server_url = GURL(server_url_string); 283c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 2845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const std::string restrict_param = 2855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) GetRestrictParameterPref(policy_pref_service); 286c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!restrict_param.empty()) { 287c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, 288c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) "restrict", 289c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) restrict_param); 2902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 291c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 292c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, "osname", 293c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) GetPlatformString()); 294c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(server_url.is_valid()); 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return server_url; 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if defined(OS_WIN) 3002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::StartGoogleUpdateRegistrySync() { 3012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry_syncer_.RequestRegistrySync(); 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::SetCreateTrialsFromSeedCalledForTesting(bool called) { 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = called; 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)std::string VariationsService::GetDefaultVariationsServerURLForTesting() { 3112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return kDefaultVariationsServerURL; 3122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RegisterPrefs(PrefRegistrySimple* registry) { 3165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) VariationsSeedStore::RegisterPrefs(registry); 3172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterInt64Pref(prefs::kVariationsLastFetchTime, 0); 3185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This preference will only be written by the policy service, which will fill 3195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // it according to a value stored in the User Policy. 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterStringPref(prefs::kVariationsRestrictParameter, 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string()); 3222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VariationsService::RegisterProfilePrefs( 3265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) user_prefs::PrefRegistrySyncable* registry) { 3275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This preference will only be written by the policy service, which will fill 3285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // it according to a value stored in the User Policy. 3295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) registry->RegisterStringPref( 3305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) prefs::kVariationsRestrictParameter, 3315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::string(), 3325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 3335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 3345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// static 3362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)VariationsService* VariationsService::Create(PrefService* local_state) { 337c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if !defined(GOOGLE_CHROME_BUILD) 3382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Unless the URL was provided, unsupported builds should return NULL to 3392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // indicate that the service should not be used. 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!CommandLine::ForCurrentProcess()->HasSwitch( 341b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) switches::kVariationsServerURL)) { 342b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) DVLOG(1) << "Not creating VariationsService in unofficial build without --" 343b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) << switches::kVariationsServerURL << " specified."; 3442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return NULL; 345b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 3462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 3472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return new VariationsService(local_state); 3482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::DoActualFetch() { 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_.reset(net::URLFetcher::Create( 3522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 0, variations_server_url_, net::URLFetcher::GET, this)); 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES | 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) net::LOAD_DO_NOT_SAVE_COOKIES); 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetRequestContext( 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_browser_process->system_request_context()); 3572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pending_seed_request_->SetMaxRetriesOn5xx(kMaxRetrySeedFetch); 3585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!seed_store_.variations_serial_number().empty()) { 3595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) pending_seed_request_->AddExtraRequestHeader( 3605d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) "If-Match:" + seed_store_.variations_serial_number()); 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->Start(); 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 364868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const base::TimeTicks now = base::TimeTicks::Now(); 365868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta time_since_last_fetch; 366868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Record a time delta of 0 (default value) if there was no previous fetch. 367868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!last_request_started_time_.is_null()) 368868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch = now - last_request_started_time_; 369868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.TimeSinceLastFetchAttempt", 370868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch.InMinutes(), 0, 371868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta::FromDays(7).InMinutes(), 50); 372868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) last_request_started_time_ = now; 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::FetchVariationsSeed() { 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 378f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const ResourceRequestAllowedNotifier::State state = 379f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) resource_request_allowed_notifier_->GetResourceRequestsAllowedState(); 3805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) RecordRequestsAllowedHistogram(ResourceRequestStateToHistogramValue(state)); 381f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) if (state != ResourceRequestAllowedNotifier::ALLOWED) { 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Resource requests were not allowed. Waiting for notification."; 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnURLFetchComplete(const net::URLFetcher* source) { 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_EQ(pending_seed_request_.get(), source); 3917d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 3927d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const bool is_first_request = !initial_request_completed_; 3937d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_ = true; 3947d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The fetcher will be deleted when the request is handled. 3962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<const net::URLFetcher> request(pending_seed_request_.release()); 397868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const net::URLRequestStatus& request_status = request->GetStatus(); 398868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (request_status.status() != net::URLRequestStatus::SUCCESS) { 399868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.FailedRequestErrorCode", 400868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) -request_status.error()); 401868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) DVLOG(1) << "Variations server request failed with error: " 402868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << request_status.error() << ": " 403868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << net::ErrorToString(request_status.error()); 4047d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // It's common for the very first fetch attempt to fail (e.g. the network 4057d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // may not yet be available). In such a case, try again soon, rather than 4067d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // waiting the full time interval. 4077d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) if (is_first_request) 4087d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) request_scheduler_->ScheduleFetchShortly(); 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Log the response code. 4132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int response_code = request->GetResponseCode(); 414868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.SeedFetchResponseCode", 415868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) response_code); 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::TimeDelta latency = 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks::Now() - last_request_started_time_; 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time response_date; 4212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_OK || 4222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_code == net::HTTP_NOT_MODIFIED) { 4232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool success = request->GetResponseHeaders()->GetDateValue(&response_date); 4242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(success || response_date.is_null()); 4252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!response_date.is_null()) { 427c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NetworkTimeTracker::BuildNotifierUpdateCallback().Run( 4282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_date, 4292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::TimeDelta::FromMilliseconds(kServerTimeResolutionMs), 4302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) latency); 4312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code != net::HTTP_OK) { 4352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DVLOG(1) << "Variations server request returned non-HTTP_OK response code: " 4362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) << response_code; 4372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_NOT_MODIFIED) { 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UMA_HISTOGRAM_MEDIUM_TIMES("Variations.FetchNotModifiedLatency", latency); 4392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RecordLastFetchTime(); 440f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Update the seed date value in local state (used for expiry check on 441f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // next start up), since 304 is a successful response. 442f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) local_state_->SetInt64(prefs::kVariationsSeedDate, 443f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) response_date.ToInternalValue()); 4442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else { 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UMA_HISTOGRAM_MEDIUM_TIMES("Variations.FetchOtherLatency", latency); 4462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UMA_HISTOGRAM_MEDIUM_TIMES("Variations.FetchSuccessLatency", latency); 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string seed_data; 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = request->GetResponseAsString(&seed_data); 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::string seed_signature; 4565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) request->GetResponseHeaders()->EnumerateHeader(NULL, 4575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) "X-Seed-Signature", 4585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) &seed_signature); 4595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (seed_store_.StoreSeedData(seed_data, seed_signature, response_date)) 4605d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) RecordLastFetchTime(); 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnResourceRequestsAllowed() { 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that this only attempts to fetch the seed at most once per period 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (kSeedFetchPeriodHours). This works because 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |resource_request_allowed_notifier_| only calls this method if an 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // attempt was made earlier that fails (which implies that the period had 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // elapsed). After a successful attempt is made, the notifier will know not 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to call this method again until another failed attempt occurs. 470868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RecordRequestsAllowedHistogram(RESOURCE_REQUESTS_ALLOWED_NOTIFIED); 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Retrying fetch."; 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 473c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 474c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // This service must have created a scheduler in order for this to be called. 475c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(request_scheduler_.get()); 476c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Reset(); 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RecordLastFetchTime() { 4802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // local_state_ is NULL in tests, so check it first. 4812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (local_state_) { 4822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->SetInt64(prefs::kVariationsLastFetchTime, 4832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time::Now().ToInternalValue()); 4842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 4862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace chrome_variations 488