| OLD | NEW |
|---|
| (Empty) |
| 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/sync/backup_rollback_controller.h" | |
| 6 | |
| 7 #include "base/command_line.h" | |
| 8 #include "base/location.h" | |
| 9 #include "base/metrics/field_trial.h" | |
| 10 #include "base/single_thread_task_runner.h" | |
| 11 #include "base/thread_task_runner_handle.h" | |
| 12 #include "chrome/common/chrome_switches.h" | |
| 13 #include "components/sync_driver/signin_manager_wrapper.h" | |
| 14 #include "components/sync_driver/sync_driver_switches.h" | |
| 15 #include "components/sync_driver/sync_prefs.h" | |
| 16 | |
| 17 namespace browser_sync { | |
| 18 | |
| 19 #if defined(ENABLE_PRE_SYNC_BACKUP) | |
| 20 // Number of rollback attempts to try before giving up. | |
| 21 static const int kRollbackLimits = 3; | |
| 22 | |
| 23 // Finch experiment name and group. | |
| 24 static char kSyncBackupFinchName[] = "SyncBackup"; | |
| 25 static char kSyncBackupFinchDisabled[] = "disabled"; | |
| 26 #endif | |
| 27 | |
| 28 BackupRollbackController::BackupRollbackController( | |
| 29 sync_driver::SyncPrefs* sync_prefs, | |
| 30 const SigninManagerWrapper* signin, | |
| 31 base::Closure start_backup, | |
| 32 base::Closure start_rollback) | |
| 33 : sync_prefs_(sync_prefs), | |
| 34 signin_(signin), | |
| 35 start_backup_(start_backup), | |
| 36 start_rollback_(start_rollback) { | |
| 37 } | |
| 38 | |
| 39 BackupRollbackController::~BackupRollbackController() { | |
| 40 } | |
| 41 | |
| 42 bool BackupRollbackController::StartBackup() { | |
| 43 if (!IsBackupEnabled()) | |
| 44 return false; | |
| 45 | |
| 46 // Disable rollback to previous backup DB because it will be overwritten by | |
| 47 // new backup. | |
| 48 sync_prefs_->SetRemainingRollbackTries(0); | |
| 49 base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, start_backup_); | |
| 50 return true; | |
| 51 } | |
| 52 | |
| 53 bool BackupRollbackController::StartRollback() { | |
| 54 if (!IsBackupEnabled()) | |
| 55 return false; | |
| 56 | |
| 57 // Don't roll back if disabled or user is signed in. | |
| 58 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 59 switches::kSyncDisableRollback) || | |
| 60 !signin_->GetEffectiveUsername().empty()) { | |
| 61 sync_prefs_->SetRemainingRollbackTries(0); | |
| 62 return false; | |
| 63 } | |
| 64 | |
| 65 int rollback_tries = sync_prefs_->GetRemainingRollbackTries(); | |
| 66 if (rollback_tries <= 0) | |
| 67 return false; // No pending rollback. | |
| 68 | |
| 69 sync_prefs_->SetRemainingRollbackTries(rollback_tries - 1); | |
| 70 base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, start_rollback_); | |
| 71 return true; | |
| 72 } | |
| 73 | |
| 74 void BackupRollbackController::OnRollbackReceived() { | |
| 75 #if defined(ENABLE_PRE_SYNC_BACKUP) | |
| 76 sync_prefs_->SetRemainingRollbackTries(kRollbackLimits); | |
| 77 #endif | |
| 78 } | |
| 79 | |
| 80 void BackupRollbackController::OnRollbackDone() { | |
| 81 #if defined(ENABLE_PRE_SYNC_BACKUP) | |
| 82 sync_prefs_->SetRemainingRollbackTries(0); | |
| 83 #endif | |
| 84 } | |
| 85 | |
| 86 // static | |
| 87 bool BackupRollbackController::IsBackupEnabled() { | |
| 88 #if defined(ENABLE_PRE_SYNC_BACKUP) | |
| 89 const std::string group_name = | |
| 90 base::FieldTrialList::FindFullName(kSyncBackupFinchName); | |
| 91 | |
| 92 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 93 switches::kSyncDisableBackup) || | |
| 94 group_name == kSyncBackupFinchDisabled) { | |
| 95 return false; | |
| 96 } | |
| 97 return true; | |
| 98 #else | |
| 99 return false; | |
| 100 #endif | |
| 101 } | |
| 102 | |
| 103 } // namespace browser_sync | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1354883003:
Componentize chrome/browser/sync/backup_rollback_controller (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master