variations_service.cc revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace
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/base64.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/build_time.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/metrics/field_trial.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/metrics/histogram.h" 15868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/metrics/sparse_histogram.h" 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/prefs/pref_registry_simple.h" 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/prefs/pref_service.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/version.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/browser_process.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/metrics/proto/trials_seed.pb.h" 21c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "chrome/browser/net/network_time_tracker.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/chrome_switches.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/metrics/variations/variations_util.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/pref_names.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/browser_thread.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/common/url_fetcher.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/load_flags.h" 28868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "net/base/net_errors.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/network_change_notifier.h" 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/base/url_util.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_response_headers.h" 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/http/http_status_code.h" 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_util.h" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_fetcher.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_request_status.h" 36eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "url/gurl.h" 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 38c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 39c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "chrome/browser/chromeos/settings/cros_settings.h" 40c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 41c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace chrome_variations { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Default server of Variations seed info. 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDefaultVariationsServerURL[] = 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "https://clients4.google.com/chrome-variations/seed"; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kMaxRetrySeedFetch = 5; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(mad): To be removed when we stop updating the NetworkTimeTracker. 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// For the HTTP date headers, the resolution of the server time is 1 second. 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const int64 kServerTimeResolutionMs = 1000; 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Maps Study_Channel enum values to corresponding chrome::VersionInfo::Channel 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// enum values. 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)chrome::VersionInfo::Channel ConvertStudyChannelToVersionChannel( 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Study_Channel study_channel) { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (study_channel) { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case Study_Channel_CANARY: 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return chrome::VersionInfo::CHANNEL_CANARY; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case Study_Channel_DEV: 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return chrome::VersionInfo::CHANNEL_DEV; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case Study_Channel_BETA: 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return chrome::VersionInfo::CHANNEL_BETA; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case Study_Channel_STABLE: 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return chrome::VersionInfo::CHANNEL_STABLE; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // All enum values of |study_channel| were handled above. 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return chrome::VersionInfo::CHANNEL_UNKNOWN; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Wrapper around channel checking, used to enable channel mocking for 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// testing. If the current browser channel is not UNKNOWN, this will return 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// that channel value. Otherwise, if the fake channel flag is provided, this 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// will return the fake channel. Failing that, this will return the UNKNOWN 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// channel. 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)chrome::VersionInfo::Channel GetChannelForVariations() { 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel(); 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (channel != chrome::VersionInfo::CHANNEL_UNKNOWN) 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return channel; 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string forced_channel = 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) switches::kFakeVariationsChannel); 862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (forced_channel == "stable") 872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) channel = chrome::VersionInfo::CHANNEL_STABLE; 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else if (forced_channel == "beta") 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) channel = chrome::VersionInfo::CHANNEL_BETA; 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else if (forced_channel == "dev") 912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) channel = chrome::VersionInfo::CHANNEL_DEV; 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else if (forced_channel == "canary") 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) channel = chrome::VersionInfo::CHANNEL_CANARY; 942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else 952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DVLOG(1) << "Invalid channel provided: " << forced_channel; 962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return channel; 972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Study_Platform GetCurrentPlatform() { 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Study_Platform_PLATFORM_WINDOWS; 10290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#elif defined(OS_IOS) 10390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return Study_Platform_PLATFORM_IOS; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_MACOSX) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Study_Platform_PLATFORM_MAC; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_CHROMEOS) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Study_Platform_PLATFORM_CHROMEOS; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_ANDROID) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Study_Platform_PLATFORM_ANDROID; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_LINUX) || defined(OS_BSD) || defined(OS_SOLARIS) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Default BSD and SOLARIS to Linux to not break those builds, although these 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // platforms are not officially supported by Chrome. 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Study_Platform_PLATFORM_LINUX; 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#error Unknown platform 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 119c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Returns a string that will be used for the value of the 'osname' URL param 120c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// to the variations server. 121c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)std::string GetPlatformString() { 122c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_WIN) 123c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "win"; 12490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#elif defined(OS_IOS) 12590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return "ios"; 126c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_MACOSX) 127c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "mac"; 128c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_CHROMEOS) 129c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "chromeos"; 130c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_ANDROID) 131c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "android"; 132c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#elif defined(OS_LINUX) || defined(OS_BSD) || defined(OS_SOLARIS) 133c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Default BSD and SOLARIS to Linux to not break those builds, although these 134c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // platforms are not officially supported by Chrome. 135c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return "linux"; 136c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 137c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#error Unknown platform 138c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 139c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 140c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Converts |date_time| in Study date format to base::Time. 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::Time ConvertStudyDateToBaseTime(int64 date_time) { 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return base::Time::UnixEpoch() + base::TimeDelta::FromSeconds(date_time); 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 146c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Gets the restrict parameter from |local_state| or from Chrome OS settings in 147c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// the case of that platform. 148c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)std::string GetRestrictParameterPref(PrefService* local_state) { 149c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::string parameter; 150c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_CHROMEOS) 151c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::CrosSettings::Get()->GetString( 152c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) chromeos::kVariationsRestrictParameter, ¶meter); 153c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 154c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (local_state) 155c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) parameter = local_state->GetString(prefs::kVariationsRestrictParameter); 156c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 157c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return parameter; 158c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 159c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 160868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum ResourceRequestsAllowedState { 161868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED, 162868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_NOT_ALLOWED, 163868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_NOTIFIED, 164868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE, 165868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 166868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 167868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Records UMA histogram with the current resource requests allowed state. 168868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)void RecordRequestsAllowedHistogram(ResourceRequestsAllowedState state) { 169868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_ENUMERATION("Variations.ResourceRequestsAllowed", state, 170868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RESOURCE_REQUESTS_ALLOWED_ENUM_SIZE); 171868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)} 172868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)VariationsService::VariationsService(PrefService* local_state) 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : local_state_(local_state), 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) variations_server_url_(GetVariationsServerURL(local_state)), 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 1797d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_( 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new ResourceRequestAllowedNotifier) { 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)VariationsService::VariationsService(ResourceRequestAllowedNotifier* notifier, 186c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) PrefService* local_state) 187c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) : local_state_(local_state), 1882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) variations_server_url_(GetVariationsServerURL(NULL)), 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_(false), 1907d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_(false), 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_(notifier) { 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) resource_request_allowed_notifier_->Init(this); 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)VariationsService::~VariationsService() { 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool VariationsService::CreateTrialsFromSeed() { 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = true; 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TrialsSeed seed; 2022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!LoadTrialsSeedFromPref(local_state_, &seed)) 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int64 date_value = local_state_->GetInt64(prefs::kVariationsSeedDate); 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time seed_date = base::Time::FromInternalValue(date_value); 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time build_time = base::GetBuildTime(); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Use the build time for date checks if either the seed date is invalid or 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the build time is newer than the seed date. 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Time reference_date = seed_date; 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (seed_date.is_null() || seed_date < build_time) 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reference_date = build_time; 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const chrome::VersionInfo current_version_info; 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!current_version_info.is_valid()) 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) chrome::VersionInfo::Channel channel = GetChannelForVariations(); 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < seed.study_size(); ++i) { 2202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (ShouldAddStudy(seed.study(i), current_version_info, reference_date, 2212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) channel)) { 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CreateTrialFromStudy(seed.study(i), reference_date); 2232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the "freshness" of the seed that was just used. The freshness is the 2272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // time between the last successful seed download and now. 2282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int64 last_fetch_time_internal = 2292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->GetInt64(prefs::kVariationsLastFetchTime); 2302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (last_fetch_time_internal) { 2312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::Time now = base::Time::Now(); 2322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::TimeDelta delta = 2332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) now - base::Time::FromInternalValue(last_fetch_time_internal); 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Log the value in number of minutes. 2352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.SeedFreshness", delta.InMinutes(), 2362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1, base::TimeDelta::FromDays(30).InMinutes(), 50); 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::StartRepeatedVariationsSeedFetch() { 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that |CreateTrialsFromSeed| was called, which is necessary to 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // retrieve the serial number that will be sent to the server. 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(create_trials_from_seed_called_); 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 249c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(!request_scheduler_.get()); 250c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Note that the act of instantiating the scheduler will start the fetch, if 251c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // the scheduler deems appropriate. Using Unretained is fine here since the 252c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // lifespan of request_scheduler_ is guaranteed to be shorter than that of 253c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // this service. 254c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_.reset(VariationsRequestScheduler::Create( 255c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Bind(&VariationsService::FetchVariationsSeed, 256c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Unretained(this)), local_state_)); 257c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Start(); 2582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 2612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)GURL VariationsService::GetVariationsServerURL(PrefService* local_state) { 2622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string server_url_string(CommandLine::ForCurrentProcess()-> 2632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetSwitchValueASCII(switches::kVariationsServerURL)); 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (server_url_string.empty()) 2652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) server_url_string = kDefaultVariationsServerURL; 2662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GURL server_url = GURL(server_url_string); 267c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 268c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) const std::string restrict_param = GetRestrictParameterPref(local_state); 269c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!restrict_param.empty()) { 270c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, 271c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) "restrict", 272c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) restrict_param); 2732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 274c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 275c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) server_url = net::AppendOrReplaceQueryParameter(server_url, "osname", 276c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) GetPlatformString()); 277c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 2782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(server_url.is_valid()); 2792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return server_url; 2802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if defined(OS_WIN) 2832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::StartGoogleUpdateRegistrySync() { 2842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry_syncer_.RequestRegistrySync(); 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::SetCreateTrialsFromSeedCalledForTesting(bool called) { 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) create_trials_from_seed_called_ = called; 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 2932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)std::string VariationsService::GetDefaultVariationsServerURLForTesting() { 2942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return kDefaultVariationsServerURL; 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 2982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RegisterPrefs(PrefRegistrySimple* registry) { 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterStringPref(prefs::kVariationsSeed, std::string()); 3002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterInt64Pref(prefs::kVariationsSeedDate, 3012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time().ToInternalValue()); 3022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterInt64Pref(prefs::kVariationsLastFetchTime, 0); 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) registry->RegisterStringPref(prefs::kVariationsRestrictParameter, 3042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string()); 3052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)VariationsService* VariationsService::Create(PrefService* local_state) { 309c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if !defined(GOOGLE_CHROME_BUILD) 3102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Unless the URL was provided, unsupported builds should return NULL to 3112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // indicate that the service should not be used. 3122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!CommandLine::ForCurrentProcess()->HasSwitch( 313b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) switches::kVariationsServerURL)) { 314b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) DVLOG(1) << "Not creating VariationsService in unofficial build without --" 315b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) << switches::kVariationsServerURL << " specified."; 3162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return NULL; 317b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 3182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 3192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return new VariationsService(local_state); 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::DoActualFetch() { 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_.reset(net::URLFetcher::Create( 3242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 0, variations_server_url_, net::URLFetcher::GET, this)); 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES | 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) net::LOAD_DO_NOT_SAVE_COOKIES); 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->SetRequestContext( 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_browser_process->system_request_context()); 3292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pending_seed_request_->SetMaxRetriesOn5xx(kMaxRetrySeedFetch); 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!variations_serial_number_.empty()) { 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->AddExtraRequestHeader("If-Match:" + 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) variations_serial_number_); 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pending_seed_request_->Start(); 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 336868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const base::TimeTicks now = base::TimeTicks::Now(); 337868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta time_since_last_fetch; 338868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Record a time delta of 0 (default value) if there was no previous fetch. 339868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!last_request_started_time_.is_null()) 340868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch = now - last_request_started_time_; 341868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("Variations.TimeSinceLastFetchAttempt", 342868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) time_since_last_fetch.InMinutes(), 0, 343868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) base::TimeDelta::FromDays(7).InMinutes(), 50); 344868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) last_request_started_time_ = now; 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::FetchVariationsSeed() { 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!resource_request_allowed_notifier_->ResourceRequestsAllowed()) { 351868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RecordRequestsAllowedHistogram(RESOURCE_REQUESTS_NOT_ALLOWED); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Resource requests were not allowed. Waiting for notification."; 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 356868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RecordRequestsAllowedHistogram(RESOURCE_REQUESTS_ALLOWED); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnURLFetchComplete(const net::URLFetcher* source) { 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_EQ(pending_seed_request_.get(), source); 3627d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 3637d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const bool is_first_request = !initial_request_completed_; 3647d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) initial_request_completed_ = true; 3657d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The fetcher will be deleted when the request is handled. 3672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<const net::URLFetcher> request(pending_seed_request_.release()); 368868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const net::URLRequestStatus& request_status = request->GetStatus(); 369868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (request_status.status() != net::URLRequestStatus::SUCCESS) { 370868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.FailedRequestErrorCode", 371868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) -request_status.error()); 372868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) DVLOG(1) << "Variations server request failed with error: " 373868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << request_status.error() << ": " 374868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) << net::ErrorToString(request_status.error()); 3757d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // It's common for the very first fetch attempt to fail (e.g. the network 3767d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // may not yet be available). In such a case, try again soon, rather than 3777d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // waiting the full time interval. 3787d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) if (is_first_request) 3797d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) request_scheduler_->ScheduleFetchShortly(); 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Log the response code. 3842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int response_code = request->GetResponseCode(); 385868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_SPARSE_SLOWLY("Variations.SeedFetchResponseCode", 386868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) response_code); 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::TimeDelta latency = 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks::Now() - last_request_started_time_; 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time response_date; 3922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_OK || 3932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_code == net::HTTP_NOT_MODIFIED) { 3942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool success = request->GetResponseHeaders()->GetDateValue(&response_date); 3952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(success || response_date.is_null()); 3962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!response_date.is_null()) { 398c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NetworkTimeTracker::BuildNotifierUpdateCallback().Run( 3992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) response_date, 4002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::TimeDelta::FromMilliseconds(kServerTimeResolutionMs), 4012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) latency); 4022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code != net::HTTP_OK) { 4062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DVLOG(1) << "Variations server request returned non-HTTP_OK response code: " 4072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) << response_code; 4082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (response_code == net::HTTP_NOT_MODIFIED) { 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UMA_HISTOGRAM_MEDIUM_TIMES("Variations.FetchNotModifiedLatency", latency); 4102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RecordLastFetchTime(); 4112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else { 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UMA_HISTOGRAM_MEDIUM_TIMES("Variations.FetchOtherLatency", latency); 4132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UMA_HISTOGRAM_MEDIUM_TIMES("Variations.FetchSuccessLatency", latency); 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string seed_data; 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = request->GetResponseAsString(&seed_data); 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) StoreSeedData(seed_data, response_date, local_state_); 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::OnResourceRequestsAllowed() { 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that this only attempts to fetch the seed at most once per period 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (kSeedFetchPeriodHours). This works because 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |resource_request_allowed_notifier_| only calls this method if an 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // attempt was made earlier that fails (which implies that the period had 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // elapsed). After a successful attempt is made, the notifier will know not 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to call this method again until another failed attempt occurs. 432868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) RecordRequestsAllowedHistogram(RESOURCE_REQUESTS_ALLOWED_NOTIFIED); 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Retrying fetch."; 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DoActualFetch(); 435c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 436c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // This service must have created a scheduler in order for this to be called. 437c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(request_scheduler_.get()); 438c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) request_scheduler_->Reset(); 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::StoreSeedData(const std::string& seed_data, 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time& seed_date, 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PrefService* local_prefs) { 4442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (seed_data.empty()) { 4452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VLOG(1) << "Variations Seed data from server is empty, rejecting the seed."; 4462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return false; 4472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Only store the seed data if it parses correctly. 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TrialsSeed seed; 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!seed.ParseFromString(seed_data)) { 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VLOG(1) << "Variations Seed data from server is not in valid proto format, " 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << "rejecting the seed."; 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string base64_seed_data; 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!base::Base64Encode(seed_data, &base64_seed_data)) { 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VLOG(1) << "Variations Seed data from server fails Base64Encode, rejecting " 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << "the seed."; 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) local_prefs->SetString(prefs::kVariationsSeed, base64_seed_data); 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) local_prefs->SetInt64(prefs::kVariationsSeedDate, 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) seed_date.ToInternalValue()); 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) variations_serial_number_ = seed.serial_number(); 4682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RecordLastFetchTime(); 4702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::ShouldAddStudy( 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study& study, 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const chrome::VersionInfo& version_info, 4782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::Time& reference_date, 4792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const chrome::VersionInfo::Channel channel) { 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.has_filter()) { 4812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!CheckStudyChannel(study.filter(), channel)) { 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Filtered out study " << study.name() << " due to channel."; 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CheckStudyLocale(study.filter(), 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_browser_process->GetApplicationLocale())) { 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Filtered out study " << study.name() << " due to locale."; 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CheckStudyPlatform(study.filter(), GetCurrentPlatform())) { 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Filtered out study " << study.name() << " due to platform."; 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CheckStudyVersion(study.filter(), version_info.Version())) { 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Filtered out study " << study.name() << " due to version."; 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CheckStudyStartDate(study.filter(), reference_date)) { 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Filtered out study " << study.name() << 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " due to start date."; 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "Kept study " << study.name() << "."; 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::CheckStudyChannel( 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study_Filter& filter, 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) chrome::VersionInfo::Channel channel) { 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // An empty channel list matches all channels. 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.channel_size() == 0) 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < filter.channel_size(); ++i) { 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ConvertStudyChannelToVersionChannel(filter.channel(i)) == channel) 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::CheckStudyLocale( 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const chrome_variations::Study_Filter& filter, 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& locale) { 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // An empty locale list matches all locales. 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.locale_size() == 0) 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < filter.locale_size(); ++i) { 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.locale(i) == locale) 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::CheckStudyPlatform( 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study_Filter& filter, 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Study_Platform platform) { 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // An empty platform list matches all platforms. 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.platform_size() == 0) 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < filter.platform_size(); ++i) { 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.platform(i) == platform) 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::CheckStudyVersion( 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study_Filter& filter, 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& version_string) { 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Version version(version_string); 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!version.IsValid()) { 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.has_min_version()) { 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (version.CompareToWildcardString(filter.min_version()) < 0) 5705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.has_max_version()) { 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (version.CompareToWildcardString(filter.max_version()) > 0) 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::CheckStudyStartDate( 5835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study_Filter& filter, 5845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time& date_time) { 5855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (filter.has_start_date()) { 5865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time start_date = 5875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConvertStudyDateToBaseTime(filter.start_date()); 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return date_time >= start_date; 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::IsStudyExpired(const Study& study, 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time& date_time) { 5965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.has_expiry_date()) { 5975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time expiry_date = 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ConvertStudyDateToBaseTime(study.expiry_date()); 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return date_time >= expiry_date; 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::ValidateStudyAndComputeTotalProbability( 6075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study& study, 6085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::FieldTrial::Probability* total_probability) { 6095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // At the moment, a missing default_experiment_name makes the study invalid. 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.default_experiment_name().empty()) { 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << study.name() << " has no default experiment defined."; 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.filter().has_min_version() && 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) !Version::IsValidWildcardString(study.filter().min_version())) { 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << study.name() << " has invalid min version: " 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << study.filter().min_version(); 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.filter().has_max_version() && 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) !Version::IsValidWildcardString(study.filter().max_version())) { 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << study.name() << " has invalid max version: " 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << study.filter().max_version(); 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& default_group_name = study.default_experiment_name(); 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::FieldTrial::Probability divisor = 0; 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool found_default_group = false; 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::set<std::string> experiment_names; 6325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < study.experiment_size(); ++i) { 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.experiment(i).name().empty()) { 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << study.name() << " is missing experiment " << i << " name"; 6355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!experiment_names.insert(study.experiment(i).name()).second) { 6385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << study.name() << " has a repeated experiment name " 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << study.experiment(i).name(); 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 64290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 64390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (!study.experiment(i).has_forcing_flag()) 64490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) divisor += study.experiment(i).probability_weight(); 6455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.experiment(i).name() == default_group_name) 6465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) found_default_group = true; 6475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!found_default_group) { 6505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << study.name() << " is missing default experiment in its " 6515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << "experiment list"; 6525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The default group was not found in the list of groups. This study is not 6535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // valid. 6545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *total_probability = divisor; 6585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool VariationsService::LoadTrialsSeedFromPref(PrefService* local_prefs, 6625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TrialsSeed* seed) { 6635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string base64_seed_data = local_prefs->GetString(prefs::kVariationsSeed); 664868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) UMA_HISTOGRAM_BOOLEAN("Variations.SeedEmpty", base64_seed_data.empty()); 665868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (base64_seed_data.empty()) 6662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return false; 6675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // If the decode process fails, assume the pref value is corrupt and clear it. 6692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string seed_data; 6705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!base::Base64Decode(base64_seed_data, &seed_data) || 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) !seed->ParseFromString(seed_data)) { 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VLOG(1) << "Variations Seed data in local pref is corrupt, clearing the " 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << "pref."; 6745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) local_prefs->ClearPref(prefs::kVariationsSeed); 6755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) variations_serial_number_ = seed->serial_number(); 6785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 6795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VariationsService::CreateTrialFromStudy(const Study& study, 6825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::Time& reference_date) { 6835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::FieldTrial::Probability total_probability = 0; 6845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!ValidateStudyAndComputeTotalProbability(study, &total_probability)) 6855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 68790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Check if any experiments need to be forced due to a command line 68890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // flag. Force the first experiment with an existing flag. 68990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) CommandLine* command_line = CommandLine::ForCurrentProcess(); 69090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) for (int i = 0; i < study.experiment_size(); ++i) { 69190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) const Study_Experiment& experiment = study.experiment(i); 69290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (experiment.has_forcing_flag() && 69390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) command_line->HasSwitch(experiment.forcing_flag())) { 69490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) base::FieldTrialList::CreateFieldTrial(study.name(), experiment.name()); 69590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) DVLOG(1) << "Trial " << study.name() << " forced by flag: " 69690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) << experiment.forcing_flag(); 69790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return; 69890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 69990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 70090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 7015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The trial is created without specifying an expiration date because the 7025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // expiration check in field_trial.cc is based on the build date. Instead, 7035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the expiration check using |reference_date| is done explicitly below. 7045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<base::FieldTrial> trial( 7055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::FieldTrialList::FactoryGetFieldTrial( 7065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) study.name(), total_probability, study.default_experiment_name(), 7072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::FieldTrialList::kNoExpirationYear, 1, 1, NULL)); 7085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (study.has_consistency() && 7105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) study.consistency() == Study_Consistency_PERMANENT) { 711c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (study.has_randomization_seed()) 712c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) trial->UseOneTimeRandomizationWithCustomSeed(study.randomization_seed()); 713c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) else 714c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) trial->UseOneTimeRandomization(); 7155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < study.experiment_size(); ++i) { 7185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Study_Experiment& experiment = study.experiment(i); 71990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Groups with flags can't be selected randomly, so we don't add them to 72090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // the field trial. 72190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (experiment.has_forcing_flag()) 72290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) continue; 72390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 7245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (experiment.name() != study.default_experiment_name()) 7255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) trial->AppendGroup(experiment.name(), experiment.probability_weight()); 7265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (experiment.has_google_web_experiment_id()) { 7282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const VariationID variation_id = 7292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static_cast<VariationID>(experiment.google_web_experiment_id()); 7302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) AssociateGoogleVariationIDForce(GOOGLE_WEB_PROPERTIES, 7312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) study.name(), 7322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) experiment.name(), 7332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) variation_id); 7342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (experiment.has_google_update_experiment_id()) { 7365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const VariationID variation_id = 7372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static_cast<VariationID>(experiment.google_update_experiment_id()); 7382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) AssociateGoogleVariationIDForce(GOOGLE_UPDATE_SERVICE, 7392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) study.name(), 7405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) experiment.name(), 7415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) variation_id); 7425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) trial->SetForced(); 7465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsStudyExpired(study, reference_date)) 7475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) trial->Disable(); 7485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VariationsService::RecordLastFetchTime() { 7512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // local_state_ is NULL in tests, so check it first. 7522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (local_state_) { 7532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_state_->SetInt64(prefs::kVariationsLastFetchTime, 7542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Time::Now().ToInternalValue()); 7552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 7572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 7585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace chrome_variations 759