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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYNC_DRIVER_DEVICE_INFO_SYNC_SERVICE_H_
#define COMPONENTS_SYNC_DRIVER_DEVICE_INFO_SYNC_SERVICE_H_
#include "base/observer_list.h"
#include "components/sync_driver/device_info_tracker.h"
#include "sync/api/sync_change_processor.h"
#include "sync/api/sync_data.h"
#include "sync/api/sync_error_factory.h"
#include "sync/api/syncable_service.h"
namespace sync_driver {
class LocalDeviceInfoProvider;
// SyncableService implementation for DEVICE_INFO model type.
class DeviceInfoSyncService : public syncer::SyncableService,
public DeviceInfoTracker {
public:
explicit DeviceInfoSyncService(
LocalDeviceInfoProvider* local_device_info_provider);
~DeviceInfoSyncService() override;
// syncer::SyncableService implementation.
syncer::SyncMergeResult MergeDataAndStartSyncing(
syncer::ModelType type,
const syncer::SyncDataList& initial_sync_data,
scoped_ptr<syncer::SyncChangeProcessor> sync_processor,
scoped_ptr<syncer::SyncErrorFactory> error_handler) override;
void StopSyncing(syncer::ModelType type) override;
syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const override;
syncer::SyncError ProcessSyncChanges(
const tracked_objects::Location& from_here,
const syncer::SyncChangeList& change_list) override;
// DeviceInfoTracker implementation.
bool IsSyncing() const override;
scoped_ptr<DeviceInfo> GetDeviceInfo(
const std::string& client_id) const override;
ScopedVector<DeviceInfo> GetAllDeviceInfo() const override;
void AddObserver(Observer* observer) override;
void RemoveObserver(Observer* observer) override;
// Called to update local device backup time.
void UpdateLocalDeviceBackupTime(base::Time backup_time);
// Gets the most recently set local device backup time.
base::Time GetLocalDeviceBackupTime() const;
private:
// Create SyncData from local DeviceInfo and |local_device_backup_time_|.
syncer::SyncData CreateLocalData(const DeviceInfo* info);
// Create SyncData from EntitySpecifics.
static syncer::SyncData CreateLocalData(
const sync_pb::EntitySpecifics& entity);
// Allocate new DeviceInfo from SyncData.
static DeviceInfo* CreateDeviceInfo(const syncer::SyncData sync_data);
// Store SyncData in the cache.
void StoreSyncData(const std::string& client_id,
const syncer::SyncData& sync_data);
// Delete SyncData from the cache.
void DeleteSyncData(const std::string& client_id);
// Notify all registered observers.
void NotifyObservers();
// Updates backup time in place in |sync_data| if it is different than
// the one stored in |local_device_backup_time_|.
// Returns true if backup time was updated.
bool UpdateBackupTime(syncer::SyncData* sync_data);
// |local_device_backup_time_| accessors.
int64 local_device_backup_time() const { return local_device_backup_time_; }
bool has_local_device_backup_time() const {
return local_device_backup_time_ >= 0;
}
void set_local_device_backup_time(int64 value) {
local_device_backup_time_ = value;
}
void clear_local_device_backup_time() { local_device_backup_time_ = -1; }
// Local device last set backup time (in proto format).
// -1 if the value hasn't been specified
int64 local_device_backup_time_;
// |local_device_info_provider_| isn't owned.
const LocalDeviceInfoProvider* const local_device_info_provider_;
// Receives ownership of |sync_processor_| and |error_handler_| in
// MergeDataAndStartSyncing() and destroy them in StopSyncing().
scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
scoped_ptr<syncer::SyncErrorFactory> error_handler_;
// Cache of all syncable and local data.
typedef std::map<std::string, syncer::SyncData> SyncDataMap;
SyncDataMap all_data_;
// Registered observers, not owned.
base::ObserverList<Observer, true> observers_;
DISALLOW_COPY_AND_ASSIGN(DeviceInfoSyncService);
};
} // namespace sync_driver
#endif // COMPONENTS_SYNC_DRIVER_DEVICE_INFO_SYNC_SERVICE_H_
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