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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/domain_reliability/service_factory.h"
      6 
      7 #include "base/command_line.h"
      8 #include "base/metrics/field_trial.h"
      9 #include "base/prefs/pref_service.h"
     10 #include "chrome/browser/browser_process.h"
     11 #include "chrome/common/chrome_switches.h"
     12 #include "chrome/common/pref_names.h"
     13 #include "components/domain_reliability/service.h"
     14 #include "components/keyed_service/content/browser_context_dependency_manager.h"
     15 #include "content/public/browser/browser_context.h"
     16 
     17 namespace domain_reliability {
     18 
     19 namespace {
     20 
     21 // Identifies Chrome as the source of Domain Reliability uploads it sends.
     22 const char* kDomainReliabilityUploadReporterString = "chrome";
     23 
     24 bool IsDomainReliabilityMonitoringEnabled() {
     25   CommandLine* command_line = CommandLine::ForCurrentProcess();
     26   if (command_line->HasSwitch(switches::kDisableDomainReliability))
     27     return false;
     28   if (command_line->HasSwitch(switches::kEnableDomainReliability))
     29     return true;
     30   return base::FieldTrialList::FindFullName("DomRel-Enable") == "enable";
     31 }
     32 
     33 }  // namespace
     34 
     35 // static
     36 DomainReliabilityService*
     37 DomainReliabilityServiceFactory::GetForBrowserContext(
     38     content::BrowserContext* context) {
     39   return static_cast<DomainReliabilityService*>(
     40       GetInstance()->GetServiceForBrowserContext(context,
     41                                                  /* create = */ true));
     42 }
     43 
     44 // static
     45 DomainReliabilityServiceFactory*
     46 DomainReliabilityServiceFactory::GetInstance() {
     47   return Singleton<DomainReliabilityServiceFactory>::get();
     48 }
     49 
     50 DomainReliabilityServiceFactory::DomainReliabilityServiceFactory()
     51     : BrowserContextKeyedServiceFactory(
     52           "DomainReliabilityService",
     53           BrowserContextDependencyManager::GetInstance()) {}
     54 
     55 DomainReliabilityServiceFactory::~DomainReliabilityServiceFactory() {}
     56 
     57 KeyedService* DomainReliabilityServiceFactory::BuildServiceInstanceFor(
     58     content::BrowserContext* context) const {
     59   if (!IsDomainReliabilityMonitoringEnabled())
     60     return NULL;
     61 
     62   if (!g_browser_process->local_state()->GetBoolean(
     63           prefs::kMetricsReportingEnabled)) {
     64     return NULL;
     65   }
     66 
     67   return DomainReliabilityService::Create(
     68       kDomainReliabilityUploadReporterString);
     69 }
     70 
     71 }  // namespace domain_reliability
     72