sync/internal_api/sync_backup_manager.h

   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 #ifndef SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_
   6 #define SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_
   7
   8 #include <set>
   9
  10 #include "sync/internal_api/sync_rollback_manager_base.h"
  11
  12 namespace syncer {
  13
  14 // SyncBackupManager runs before user signs in to sync to back up user's data
  15 // before sync starts. The data that's backed up can be used to restore user's
  16 // settings to pre-sync state.
  17 class SYNC_EXPORT_PRIVATE SyncBackupManager : public SyncRollbackManagerBase {
  18  public:
  19   SyncBackupManager();
  20   virtual ~SyncBackupManager();
  21
  22   // SyncManager implementation.
  23   virtual void Init(
  24       const base::FilePath& database_location,
  25       const WeakHandle<JsEventHandler>& event_handler,
  26       const std::string& sync_server_and_path,
  27       int sync_server_port,
  28       bool use_ssl,
  29       scoped_ptr<HttpPostProviderFactory> post_factory,
  30       const std::vector<scoped_refptr<ModelSafeWorker> >& workers,
  31       ExtensionsActivity* extensions_activity,
  32       SyncManager::ChangeDelegate* change_delegate,
  33       const SyncCredentials& credentials,
  34       const std::string& invalidator_client_id,
  35       const std::string& restored_key_for_bootstrapping,
  36       const std::string& restored_keystore_key_for_bootstrapping,
  37       InternalComponentsFactory* internal_components_factory,
  38       Encryptor* encryptor,
  39       scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler,
  40       ReportUnrecoverableErrorFunction
  41           report_unrecoverable_error_function,
  42       CancelationSignal* cancelation_signal) OVERRIDE;
  43   virtual void SaveChanges() OVERRIDE;
  44   virtual SyncStatus GetDetailedStatus() const OVERRIDE;
  45
  46   // DirectoryChangeDelegate implementation.
  47   virtual ModelTypeSet HandleTransactionEndingChangeEvent(
  48       const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
  49       syncable::BaseTransaction* trans) OVERRIDE;
  50
  51   virtual void RegisterDirectoryTypeDebugInfoObserver(
  52       syncer::TypeDebugInfoObserver* observer) OVERRIDE;
  53   virtual void UnregisterDirectoryTypeDebugInfoObserver(
  54       syncer::TypeDebugInfoObserver* observer) OVERRIDE;
  55   virtual bool HasDirectoryTypeDebugInfoObserver(
  56       syncer::TypeDebugInfoObserver* observer) OVERRIDE;
  57   virtual void RequestEmitDebugInfo() OVERRIDE;
  58
  59  private:
  60   // Replaces local IDs with server IDs and clear unsynced bit of modified
  61   // entries.
  62   void NormalizeEntries();
  63
  64   // Manipulate preference nodes so that they'll be overwritten by local
  65   // preference values during model association, i.e. local wins instead of
  66   // server wins. This is for preventing backup from changing preferences in
  67   // case backup DB has hijacked preferences.
  68   void HideSyncPreference(ModelType pref_type);
  69
  70   // Handles of unsynced entries caused by local model changes.
  71   std::set<int64> unsynced_;
  72
  73   // True if NormalizeEntries() is being called.
  74   bool in_normalization_;
  75
  76   SyncStatus status_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(SyncBackupManager);
  79 };
  80
  81 }  // namespace syncer
  82
  83 #endif  // SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_