src/sync/internal_api/sync_rollback_manager_base.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_ROLLBACK_MANAGER_BASE_H_
   6 #define SYNC_INTERNAL_API_SYNC_ROLLBACK_MANAGER_BASE_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "sync/base/sync_export.h"
  12 #include "sync/internal_api/public/http_post_provider_factory.h"
  13 #include "sync/internal_api/public/internal_components_factory.h"
  14 #include "sync/internal_api/public/sync_manager.h"
  15 #include "sync/internal_api/public/user_share.h"
  16 #include "sync/syncable/directory_change_delegate.h"
  17 #include "sync/syncable/transaction_observer.h"
  18
  19 namespace syncer {
  20
  21 class WriteTransaction;
  22
  23 // Base class of sync managers used for backup and rollback. Two major
  24 // functions are:
  25 //   * Init(): load backup DB into sync directory.
  26 //   * ConfigureSyncer(): initialize permanent sync nodes (root, bookmark
  27 //                        permanent folders) for configured type as needed.
  28 //
  29 // Most of other functions are no ops.
  30 class SYNC_EXPORT_PRIVATE SyncRollbackManagerBase :
  31     public SyncManager,
  32     public syncable::DirectoryChangeDelegate,
  33     public syncable::TransactionObserver {
  34  public:
  35   SyncRollbackManagerBase();
  36   virtual ~SyncRollbackManagerBase();
  37
  38   // SyncManager implementation.
  39   virtual ModelTypeSet InitialSyncEndedTypes() OVERRIDE;
  40   virtual ModelTypeSet GetTypesWithEmptyProgressMarkerToken(
  41       ModelTypeSet types) OVERRIDE;
  42   virtual bool PurgePartiallySyncedTypes() OVERRIDE;
  43   virtual void UpdateCredentials(const SyncCredentials& credentials) OVERRIDE;
  44   virtual void StartSyncingNormally(const ModelSafeRoutingInfo& routing_info)
  45       OVERRIDE;
  46   virtual void ConfigureSyncer(
  47       ConfigureReason reason,
  48       ModelTypeSet to_download,
  49       ModelTypeSet to_purge,
  50       ModelTypeSet to_journal,
  51       ModelTypeSet to_unapply,
  52       const ModelSafeRoutingInfo& new_routing_info,
  53       const base::Closure& ready_task,
  54       const base::Closure& retry_task) OVERRIDE;
  55   virtual void SetInvalidatorEnabled(bool invalidator_enabled) OVERRIDE;
  56   virtual void OnIncomingInvalidation(
  57       syncer::ModelType type,
  58       scoped_ptr<InvalidationInterface> invalidation) OVERRIDE;
  59   virtual void AddObserver(SyncManager::Observer* observer) OVERRIDE;
  60   virtual void RemoveObserver(SyncManager::Observer* observer) OVERRIDE;
  61   virtual SyncStatus GetDetailedStatus() const OVERRIDE;
  62   virtual void SaveChanges() OVERRIDE;
  63   virtual void ShutdownOnSyncThread(ShutdownReason reason) OVERRIDE;
  64   virtual UserShare* GetUserShare() OVERRIDE;
  65   virtual const std::string cache_guid() OVERRIDE;
  66   virtual bool ReceivedExperiment(Experiments* experiments) OVERRIDE;
  67   virtual bool HasUnsyncedItems() OVERRIDE;
  68   virtual SyncEncryptionHandler* GetEncryptionHandler() OVERRIDE;
  69   virtual void RefreshTypes(ModelTypeSet types) OVERRIDE;
  70   virtual SyncContextProxy* GetSyncContextProxy() OVERRIDE;
  71   virtual ScopedVector<ProtocolEvent> GetBufferedProtocolEvents()
  72       OVERRIDE;
  73   virtual scoped_ptr<base::ListValue> GetAllNodesForType(
  74       syncer::ModelType type) OVERRIDE;
  75
  76   // DirectoryChangeDelegate implementation.
  77   virtual void HandleTransactionCompleteChangeEvent(
  78       ModelTypeSet models_with_changes) OVERRIDE;
  79   virtual ModelTypeSet HandleTransactionEndingChangeEvent(
  80       const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
  81       syncable::BaseTransaction* trans) OVERRIDE;
  82   virtual void HandleCalculateChangesChangeEventFromSyncApi(
  83       const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
  84       syncable::BaseTransaction* trans,
  85       std::vector<int64>* entries_changed) OVERRIDE;
  86   virtual void HandleCalculateChangesChangeEventFromSyncer(
  87       const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
  88       syncable::BaseTransaction* trans,
  89       std::vector<int64>* entries_changed) OVERRIDE;
  90
  91   // syncable::TransactionObserver implementation.
  92   virtual void OnTransactionWrite(
  93       const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
  94       ModelTypeSet models_with_changes) OVERRIDE;
  95
  96  protected:
  97   ObserverList<SyncManager::Observer>* GetObservers();
  98
  99   // Initialize sync backup DB.
 100   bool InitInternal(
 101       const base::FilePath& database_location,
 102       InternalComponentsFactory* internal_components_factory,
 103       InternalComponentsFactory::StorageOption storage,
 104       scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler,
 105       ReportUnrecoverableErrorFunction report_unrecoverable_error_function);
 106
 107   virtual void RegisterDirectoryTypeDebugInfoObserver(
 108       syncer::TypeDebugInfoObserver* observer) OVERRIDE;
 109   virtual void UnregisterDirectoryTypeDebugInfoObserver(
 110       syncer::TypeDebugInfoObserver* observer) OVERRIDE;
 111   virtual bool HasDirectoryTypeDebugInfoObserver(
 112       syncer::TypeDebugInfoObserver* observer) OVERRIDE;
 113   virtual void RequestEmitDebugInfo() OVERRIDE;
 114
 115   bool initialized() const {
 116     return initialized_;
 117   }
 118
 119  private:
 120   void NotifyInitializationSuccess();
 121   void NotifyInitializationFailure();
 122
 123   bool InitBackupDB(const base::FilePath& sync_folder,
 124                     InternalComponentsFactory* internal_components_factory,
 125                     InternalComponentsFactory::StorageOption storage);
 126
 127   bool InitTypeRootNode(ModelType type);
 128   void InitBookmarkFolder(const std::string& folder);
 129
 130   UserShare share_;
 131   ObserverList<SyncManager::Observer> observers_;
 132
 133   scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler_;
 134   ReportUnrecoverableErrorFunction report_unrecoverable_error_function_;
 135
 136   base::WeakPtrFactory<SyncRollbackManagerBase> weak_ptr_factory_;
 137
 138   scoped_ptr<SyncEncryptionHandler> dummy_handler_;
 139
 140   bool initialized_;
 141
 142   DISALLOW_COPY_AND_ASSIGN(SyncRollbackManagerBase);
 143 };
 144
 145 }  // namespace syncer
 146
 147 #endif  // SYNC_INTERNAL_API_SYNC_ROLLBACK_MANAGER_BASE_H_