chrome/browser/tracing/chrome_tracing_delegate.cc

   1 // Copyright 2015 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/tracing/chrome_tracing_delegate.h"
   6
   7 #include "base/prefs/pref_registry_simple.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "base/time/time.h"
  10 #include "chrome/browser/browser_process.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/profiles/profile_manager.h"
  13 #include "chrome/browser/tracing/crash_service_uploader.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/browser_list.h"
  16 #include "chrome/browser/ui/browser_otr_state.h"
  17 #include "chrome/common/pref_names.h"
  18 #include "content/public/browser/background_tracing_config.h"
  19 #include "content/public/browser/browser_thread.h"
  20
  21 namespace {
  22
  23 const int kMinDaysUntilNextUpload = 7;
  24
  25 }  // namespace
  26
  27 void ChromeTracingDelegate::RegisterPrefs(PrefRegistrySimple* registry) {
  28   registry->RegisterInt64Pref(prefs::kBackgroundTracingLastUpload, 0);
  29 }
  30
  31 ChromeTracingDelegate::ChromeTracingDelegate() : incognito_launched_(false) {
  32   CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  33   BrowserList::AddObserver(this);
  34 }
  35
  36 ChromeTracingDelegate::~ChromeTracingDelegate() {
  37   CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  38   BrowserList::RemoveObserver(this);
  39 }
  40
  41 void ChromeTracingDelegate::OnBrowserAdded(Browser* browser) {
  42   if (browser->profile()->IsOffTheRecord())
  43     incognito_launched_ = true;
  44 }
  45
  46 scoped_ptr<content::TraceUploader> ChromeTracingDelegate::GetTraceUploader(
  47     net::URLRequestContextGetter* request_context) {
  48   return scoped_ptr<content::TraceUploader>(
  49       new TraceCrashServiceUploader(request_context));
  50 }
  51
  52 bool ChromeTracingDelegate::IsAllowedToBeginBackgroundScenario(
  53     const content::BackgroundTracingConfig& config,
  54     bool requires_anonymized_data) {
  55   Profile* profile = g_browser_process->profile_manager()
  56                          ->GetLastUsedProfile()
  57                          ->GetOriginalProfile();
  58   DCHECK(profile);
  59   // Safeguard, in case background tracing is responsible for a crash on
  60   // startup.
  61   if (profile->GetLastSessionExitType() == Profile::EXIT_CRASHED)
  62     return false;
  63
  64   if (requires_anonymized_data && chrome::IsOffTheRecordSessionActive())
  65     return false;
  66
  67   if (config.mode ==
  68       content::BackgroundTracingConfig::PREEMPTIVE_TRACING_MODE) {
  69     PrefService* local_state = g_browser_process->local_state();
  70     DCHECK(local_state);
  71     const base::Time last_upload_time = base::Time::FromInternalValue(
  72         local_state->GetInt64(prefs::kBackgroundTracingLastUpload));
  73     if (!last_upload_time.is_null()) {
  74       base::Time computed_next_allowed_time =
  75           last_upload_time + base::TimeDelta::FromDays(kMinDaysUntilNextUpload);
  76       if (computed_next_allowed_time > base::Time::Now()) {
  77         return false;
  78       }
  79     }
  80   }
  81
  82   return true;
  83 }
  84
  85 bool ChromeTracingDelegate::IsAllowedToEndBackgroundScenario(
  86     const content::BackgroundTracingConfig& config,
  87     bool requires_anonymized_data) {
  88   if (requires_anonymized_data && incognito_launched_)
  89     return false;
  90
  91   if (config.mode ==
  92       content::BackgroundTracingConfig::PREEMPTIVE_TRACING_MODE) {
  93     PrefService* local_state = g_browser_process->local_state();
  94     DCHECK(local_state);
  95     local_state->SetInt64(prefs::kBackgroundTracingLastUpload,
  96                           base::Time::Now().ToInternalValue());
  97
  98     // We make sure we've persisted the value in case finalizing the tracing
  99     // causes a crash.
 100     local_state->CommitPendingWrite();
 101   }
 102
 103   return true;
 104 }