variations_service.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061
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" 15010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)#include "base/sys_info.h" 16cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/timer/elapsed_timer.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/version.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/browser_process.h" 19cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "chrome/browser/metrics/metrics_state_manager.h" 204e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "chrome/browser/network_time/network_time_tracker.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/chrome_switches.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/pref_names.h" 23cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/pref_registry/pref_registry_syncable.h" 2458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "components/variations/proto/variations_seed.pb.h" 25424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)#include "components/variations/variations_seed_processor.h" 26cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/variations/variations_seed_simulator.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/browser_thread.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/load_flags.h" 29868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "net/base/net_errors.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/network_change_notifier.h" 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/base/url_util.h" 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_response_headers.h" 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/http/http_status_code.h" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_util.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_fetcher.h" 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_request_status.h" 37f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "ui/base/device_form_factor.h" 38eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "url/gurl.h" 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 40c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 41c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "chrome/browser/chromeos/settings/cros_settings.h" 42c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 43c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace chrome_variations { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Default server of Variations seed info. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDefaultVariationsServerURL[] = 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "https://clients4.google.com/chrome-variations/seed"; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kMaxRetrySeedFetch = 5; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(mad): To be removed when we stop updating the NetworkTimeTracker. 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// For the HTTP date headers, the resolution of the server time is 1 second. 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const int64 kServerTimeResolutionMs = 1000; 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Wrapper around channel checking, used to enable channel mocking for 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// testing. If the current browser channel is not UNKNOWN, this will return 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// that channel value. Otherwise, if the fake channel flag is provided, this 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// will return the fake channel. Failing that, this will return the UNKNOWN 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// channel. 62ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben MurdochStudy_Channel GetChannelForVariations() { 63ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch switch (chrome::VersionInfo::GetChannel()) { 64ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_CANARY: 65ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_CANARY; 66ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_DEV: 67ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_DEV; 68ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_BETA: 69ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_BETA; 70ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_STABLE: 71ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_STABLE; 72ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch case chrome::VersionInfo::CHANNEL_UNKNOWN: 73ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch break; 74ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 75ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const std::string forced_channel = 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) switches::kFakeVariationsChannel); 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (forced_channel == "stable") 79ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_STABLE; 80ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "beta") 81ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_BETA; 82ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "dev") 83ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_DEV; 84ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (forced_channel == "canary") 85ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_CANARY; 86ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DVLOG(1) << "Invalid channel provided: " << forced_channel; 87ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return Study_Channel_UNKNOWN; 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 90c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Returns a string that will be used for the value of the 'osname' URL param 91c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// to the variations server. 92c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)std::string GetPlatformString() { 93c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_WIN) 94c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "win"; 9590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#elif defined(OS_IOS) 9690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return "ios"; 97c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_MACOSX) 98c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "mac"; 99c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_CHROMEOS) 100c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "chromeos"; 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_ANDROID) 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "android"; 103c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_LINUX) || defined(OS_BSD) || defined(OS_SOLARIS) 104c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Default BSD and SOLARIS to Linux to not break those builds, although these 105c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // platforms are not officially supported by Chrome. 106c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "linux"; 107c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 108c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#error Unknown platform 109c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 110c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 111c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Gets the restrict parameter from |policy_pref_service| or from Chrome OS 1135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// settings in the case of that platform. 1145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)std::string GetRestrictParameterPref(PrefService* policy_pref_service) { 115c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::string parameter; 116c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 117c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::CrosSettings::Get()->GetString( 118c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::kVariationsRestrictParameter, ¶meter); 119c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 1205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (policy_pref_service) { 1215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) parameter = 1225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service->GetString(prefs::kVariationsRestrictParameter); 1235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 124c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 125c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return parameter; 126c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 127c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 128868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum ResourceRequestsAllowedState { 129868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED, 130868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED, 131868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_NOTIFIED, 132f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_EULA_NOT_ACCEPTED, 133f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_NETWORK_DOWN, 134f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED_COMMAND_LINE_DISABLED, 135868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE, 136868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 137868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 138868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Records UMA histogram with the current resource requests allowed state. 139868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)void RecordRequestsAllowedHistogram(ResourceRequestsAllowedState state) { 140868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Variations.ResourceRequestsAllowed", state, 141868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE); 142868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)} 143868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 144f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Converts ResourceRequestAllowedNotifier::State to the corresponding 145f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// ResourceRequestsAllowedState value. 146f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)ResourceRequestsAllowedState ResourceRequestStateToHistogramValue( 147f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) ResourceRequestAllowedNotifier::State state) { 148f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) switch (state) { 149f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_EULA_NOT_ACCEPTED: 150f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_EULA_NOT_ACCEPTED; 151f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_NETWORK_DOWN: 152f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_NETWORK_DOWN; 153f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::DISALLOWED_COMMAND_LINE_DISABLED: 154f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED_COMMAND_LINE_DISABLED; 155f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ResourceRequestAllowedNotifier::ALLOWED: 1565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return RESOURCE_REQUESTS_ALLOWED; 157f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 158f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) NOTREACHED(); 159f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return RESOURCE_REQUESTS_NOT_ALLOWED; 160f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 161f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 1627dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 163010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)// Gets current form factor and converts it from enum DeviceFormFactor to enum 164f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Study_FormFactor. 165f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)Study_FormFactor GetCurrentFormFactor() { 166f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) switch (ui::GetDeviceFormFactor()) { 167f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_PHONE: 168f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_PHONE; 169f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_TABLET: 170f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_TABLET; 171f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) case ui::DEVICE_FORM_FACTOR_DESKTOP: 172f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_DESKTOP; 173f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 174f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) NOTREACHED(); 175f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) return Study_FormFactor_DESKTOP; 176f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)} 177f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 178010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)// Gets the hardware class and returns it as a string. This returns an empty 179010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)// string if the client is not ChromeOS. 180010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)std::string GetHardwareClass() { 181010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)#if defined(OS_CHROMEOS) 182010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) return base::SysInfo::GetLsbReleaseBoard(); 183010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)#endif // OS_CHROMEOS 184010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) return std::string(); 185010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles)} 186010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) 187a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch// Returns the date that should be used by the VariationsSeedProcessor to do 188a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch// expiry and start date checks. 189a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochbase::Time GetReferenceDateForExpiryChecks(PrefService* local_state) { 190a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const int64 date_value = local_state->GetInt64(prefs::kVariationsSeedDate); 191a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const base::Time seed_date = base::Time::FromInternalValue(date_value); 192a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch const base::Time build_time = base::GetBuildTime(); 193a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch // Use the build time for date checks if either the seed date is invalid or 194a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch // the build time is newer than the seed date. 195a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch base::Time reference_date = seed_date; 196a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch if (seed_date.is_null() || seed_date < build_time) 197a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch reference_date = build_time; 198a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch return reference_date; 199a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch} 200a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 203cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)VariationsService::VariationsService( 204cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) PrefService* local_state, 205cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) metrics::MetricsStateManager* state_manager) 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : local_state_(local_state), 207cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) state_manager_(state_manager), 2085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service_(local_state), 2095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) seed_store_(local_state), 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 2117d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_( 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new ResourceRequestAllowedNotifier) { 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 217cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)VariationsService::VariationsService( 218cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ResourceRequestAllowedNotifier* notifier, 219cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) PrefService* local_state, 220cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) metrics::MetricsStateManager* state_manager) 221c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) : local_state_(local_state), 222cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) state_manager_(state_manager), 2235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) policy_pref_service_(local_state), 2245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) seed_store_(local_state), 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 2267d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_(notifier) { 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)VariationsService::~VariationsService() { 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool VariationsService::CreateTrialsFromSeed() { 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = true; 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) VariationsSeed seed; 2385d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!seed_store_.LoadSeed(&seed)) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const chrome::VersionInfo current_version_info; 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!current_version_info.is_valid()) 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch const base::Version current_version(current_version_info.Version()); 246ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!current_version.IsValid()) 247ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return false; 248ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 249558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch VariationsSeedProcessor().CreateTrialsFromSeed( 250a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch seed, g_browser_process->GetApplicationLocale(), 251a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch GetReferenceDateForExpiryChecks(local_state_), current_version, 252010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) GetChannelForVariations(), GetCurrentFormFactor(), GetHardwareClass()); 2532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the "freshness" of the seed that was just used. The freshness is the 2552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // time between the last successful seed download and now. 2562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int64 last_fetch_time_internal = 2572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->GetInt64(prefs::kVariationsLastFetchTime); 2582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (last_fetch_time_internal) { 2592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::Time now = base::Time::Now(); 2602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::TimeDelta delta = 2612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) now - base::Time::FromInternalValue(last_fetch_time_internal); 2622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the value in number of minutes. 2632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.SeedFreshness", delta.InMinutes(), 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1, base::TimeDelta::FromDays(30).InMinutes(), 50); 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::StartRepeatedVariationsSeedFetch() { 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Initialize the Variations server URL. 2745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) variations_server_url_ = GetVariationsServerURL(policy_pref_service_); 2755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that |CreateTrialsFromSeed| was called, which is necessary to 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // retrieve the serial number that will be sent to the server. 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(create_trials_from_seed_called_); 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 280c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(!request_scheduler_.get()); 281c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Note that the act of instantiating the scheduler will start the fetch, if 282c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // the scheduler deems appropriate. Using Unretained is fine here since the 283c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // lifespan of request_scheduler_ is guaranteed to be shorter than that of 284c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // this service. 285c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_.reset(VariationsRequestScheduler::Create( 286c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Bind(&VariationsService::FetchVariationsSeed, 287c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Unretained(this)), local_state_)); 288c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Start(); 2892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// TODO(rkaplow): Handle this and the similar event in metrics_service by 2925d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// observing an 'OnAppEnterForeground' event in RequestScheduler instead of 2935d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// requiring the frontend code to notify each service individually. Since the 2945d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// scheduler will handle it directly the VariationService shouldn't need to 2955d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// know details of this anymore. 2965d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VariationsService::OnAppEnterForeground() { 2975d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) request_scheduler_->OnAppEnterForeground(); 2985d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 2995d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 3015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)GURL VariationsService::GetVariationsServerURL( 3025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PrefService* policy_pref_service) { 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string server_url_string(CommandLine::ForCurrentProcess()-> 3042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetSwitchValueASCII(switches::kVariationsServerURL)); 3052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (server_url_string.empty()) 3062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) server_url_string = kDefaultVariationsServerURL; 3072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GURL server_url = GURL(server_url_string); 308c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 3095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const std::string restrict_param = 3105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) GetRestrictParameterPref(policy_pref_service); 311c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!restrict_param.empty()) { 312c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, 313c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) "restrict", 314c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) restrict_param); 3152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 316c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 317c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, "osname", 318c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) GetPlatformString()); 319c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(server_url.is_valid()); 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return server_url; 3222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if defined(OS_WIN) 3252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::StartGoogleUpdateRegistrySync() { 3262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry_syncer_.RequestRegistrySync(); 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::SetCreateTrialsFromSeedCalledForTesting(bool called) { 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = called; 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)std::string VariationsService::GetDefaultVariationsServerURLForTesting() { 3362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return kDefaultVariationsServerURL; 3372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RegisterPrefs(PrefRegistrySimple* registry) { 3415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) VariationsSeedStore::RegisterPrefs(registry); 3422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterInt64Pref(prefs::kVariationsLastFetchTime, 0); 3435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This preference will only be written by the policy service, which will fill 3445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // it according to a value stored in the User Policy. 3452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterStringPref(prefs::kVariationsRestrictParameter, 3462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string()); 3472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VariationsService::RegisterProfilePrefs( 3515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) user_prefs::PrefRegistrySyncable* registry) { 3525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This preference will only be written by the policy service, which will fill 3535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // it according to a value stored in the User Policy. 3545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) registry->RegisterStringPref( 3555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) prefs::kVariationsRestrictParameter, 3565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::string(), 3575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF); 3585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 3595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3605d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// static 361cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)scoped_ptr<VariationsService> VariationsService::Create( 362cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) PrefService* local_state, 363cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) metrics::MetricsStateManager* state_manager) { 364cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<VariationsService> result; 365c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if !defined(GOOGLE_CHROME_BUILD) 3662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Unless the URL was provided, unsupported builds should return NULL to 3672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // indicate that the service should not be used. 3682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!CommandLine::ForCurrentProcess()->HasSwitch( 369b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) switches::kVariationsServerURL)) { 370b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) DVLOG(1) << "Not creating VariationsService in unofficial build without --" 371b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) << switches::kVariationsServerURL << " specified."; 372cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return result.Pass(); 373b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 3742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 375cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) result.reset(new VariationsService(local_state, state_manager)); 376cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return result.Pass(); 3772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::DoActualFetch() { 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_.reset(net::URLFetcher::Create( 3812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 0, variations_server_url_, net::URLFetcher::GET, this)); 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES | 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) net::LOAD_DO_NOT_SAVE_COOKIES); 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetRequestContext( 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_browser_process->system_request_context()); 3862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pending_seed_request_->SetMaxRetriesOn5xx(kMaxRetrySeedFetch); 3875d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!seed_store_.variations_serial_number().empty()) { 3885d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) pending_seed_request_->AddExtraRequestHeader( 3895d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) "If-Match:" + seed_store_.variations_serial_number()); 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->Start(); 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 393868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const base::TimeTicks now = base::TimeTicks::Now(); 394868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta time_since_last_fetch; 395868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Record a time delta of 0 (default value) if there was no previous fetch. 396868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!last_request_started_time_.is_null()) 397868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch = now - last_request_started_time_; 398868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.TimeSinceLastFetchAttempt", 399868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch.InMinutes(), 0, 400868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta::FromDays(7).InMinutes(), 50); 401868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) last_request_started_time_ = now; 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 404a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)void VariationsService::StoreSeed(const std::string& seed_data, 405a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const std::string& seed_signature, 406a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) const base::Time& date_fetched) { 407cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) VariationsSeed seed; 408cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!seed_store_.StoreSeedData(seed_data, seed_signature, date_fetched, 409cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) &seed)) { 410a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch return; 411cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 412a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch RecordLastFetchTime(); 413cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 414cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Perform seed simulation only if |state_manager_| is not-NULL. The state 415cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // manager may be NULL for some unit tests. 416cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!state_manager_) 417cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return; 418cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 419cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const base::ElapsedTimer timer; 420cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 421cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // TODO(asvitkine): Get the version that will be used on restart instead of 422cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // the current version (i.e. if an update has been downloaded). 423cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const chrome::VersionInfo current_version_info; 424cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!current_version_info.is_valid()) 425cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return; 426cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 427cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const base::Version current_version(current_version_info.Version()); 428cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!current_version.IsValid()) 429cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return; 430cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 431cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<const base::FieldTrial::EntropyProvider> entropy_provider = 432cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) state_manager_->CreateEntropyProvider(); 433cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) VariationsSeedSimulator seed_simulator(*entropy_provider); 434cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 435cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) VariationsSeedSimulator::Result result = seed_simulator.SimulateSeedStudies( 436cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) seed, g_browser_process->GetApplicationLocale(), 437cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) GetReferenceDateForExpiryChecks(local_state_), current_version, 438cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) GetChannelForVariations(), GetCurrentFormFactor(), GetHardwareClass()); 439cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 440cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) UMA_HISTOGRAM_COUNTS_100("Variations.SimulateSeed.NormalChanges", 441cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) result.normal_group_change_count); 442cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) UMA_HISTOGRAM_COUNTS_100("Variations.SimulateSeed.KillBestEffortChanges", 443cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) result.kill_best_effort_group_change_count); 444cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) UMA_HISTOGRAM_COUNTS_100("Variations.SimulateSeed.KillCriticalChanges", 445cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) result.kill_critical_group_change_count); 446cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 447cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) UMA_HISTOGRAM_TIMES("Variations.SimulateSeed.Duration", timer.Elapsed()); 448a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)} 449a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::FetchVariationsSeed() { 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 453f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const ResourceRequestAllowedNotifier::State state = 454f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) resource_request_allowed_notifier_->GetResourceRequestsAllowedState(); 4555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) RecordRequestsAllowedHistogram(ResourceRequestStateToHistogramValue(state)); 456f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) if (state != ResourceRequestAllowedNotifier::ALLOWED) { 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Resource requests were not allowed. Waiting for notification."; 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnURLFetchComplete(const net::URLFetcher* source) { 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_EQ(pending_seed_request_.get(), source); 4667d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 4677d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const bool is_first_request = !initial_request_completed_; 4687d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_ = true; 4697d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The fetcher will be deleted when the request is handled. 4712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<const net::URLFetcher> request(pending_seed_request_.release()); 472868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const net::URLRequestStatus& request_status = request->GetStatus(); 473868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (request_status.status() != net::URLRequestStatus::SUCCESS) { 474868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.FailedRequestErrorCode", 475868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) -request_status.error()); 476868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) DVLOG(1) << "Variations server request failed with error: " 477868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << request_status.error() << ": " 478868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << net::ErrorToString(request_status.error()); 4797d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // It's common for the very first fetch attempt to fail (e.g. the network 4807d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // may not yet be available). In such a case, try again soon, rather than 4817d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // waiting the full time interval. 4827d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) if (is_first_request) 4837d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) request_scheduler_->ScheduleFetchShortly(); 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Log the response code. 4882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int response_code = request->GetResponseCode(); 489868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.SeedFetchResponseCode", 490868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) response_code); 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::TimeDelta latency = 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks::Now() - last_request_started_time_; 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time response_date; 4962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_OK || 4972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_code == net::HTTP_NOT_MODIFIED) { 4982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool success = request->GetResponseHeaders()->GetDateValue(&response_date); 4992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(success || response_date.is_null()); 5002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!response_date.is_null()) { 502cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) g_browser_process->network_time_tracker()->UpdateNetworkTime( 5032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_date, 5042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::TimeDelta::FromMilliseconds(kServerTimeResolutionMs), 505cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) latency, 506cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::TimeTicks::Now()); 5072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code != net::HTTP_OK) { 5112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DVLOG(1) << "Variations server request returned non-HTTP_OK response code: " 5122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) << response_code; 5132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_NOT_MODIFIED) { 5142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RecordLastFetchTime(); 515f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Update the seed date value in local state (used for expiry check on 516f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // next start up), since 304 is a successful response. 517a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) seed_store_.UpdateSeedDateAndLogDayChange(response_date); 5182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string seed_data; 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = request->GetResponseAsString(&seed_data); 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) std::string seed_signature; 5275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) request->GetResponseHeaders()->EnumerateHeader(NULL, 5285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) "X-Seed-Signature", 5295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) &seed_signature); 530a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) StoreSeed(seed_data, seed_signature, response_date); 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnResourceRequestsAllowed() { 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that this only attempts to fetch the seed at most once per period 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (kSeedFetchPeriodHours). This works because 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |resource_request_allowed_notifier_| only calls this method if an 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // attempt was made earlier that fails (which implies that the period had 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // elapsed). After a successful attempt is made, the notifier will know not 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to call this method again until another failed attempt occurs. 540868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RecordRequestsAllowedHistogram(RESOURCE_REQUESTS_ALLOWED_NOTIFIED); 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Retrying fetch."; 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 543c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 544c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // This service must have created a scheduler in order for this to be called. 545c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(request_scheduler_.get()); 546c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Reset(); 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RecordLastFetchTime() { 5502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // local_state_ is NULL in tests, so check it first. 5512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (local_state_) { 5522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->SetInt64(prefs::kVariationsLastFetchTime, 5532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time::Now().ToInternalValue()); 5542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 5562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace chrome_variations 558