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// Copyright 2012 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 SYNC_API_SYNC_CHANGE_PROCESSOR_H_
#define SYNC_API_SYNC_CHANGE_PROCESSOR_H_
#include <vector>
#include "sync/api/sync_data.h"
#include "sync/api/sync_error.h"
#include "sync/base/sync_export.h"
#include "sync/internal_api/public/base/model_type.h"
namespace tracked_objects {
class Location;
} // namespace tracked_objects
namespace syncer {
class SyncChange;
typedef std::vector<SyncChange> SyncChangeList;
// An interface for services that handle receiving SyncChanges.
class SYNC_EXPORT SyncChangeProcessor {
public:
SyncChangeProcessor();
virtual ~SyncChangeProcessor();
// Process a list of SyncChanges.
// Returns: A default SyncError (IsSet() == false) if no errors were
// encountered, and a filled SyncError (IsSet() == true)
// otherwise.
// Inputs:
// |from_here|: allows tracking of where sync changes originate.
// |change_list|: is the list of sync changes in need of processing.
virtual SyncError ProcessSyncChanges(
const tracked_objects::Location& from_here,
const SyncChangeList& change_list) = 0;
// Fills a list of SyncData. This should create an up to date representation
// of all the data known to the ChangeProcessor for |datatype|, and
// should match/be a subset of the server's view of that datatype.
//
// WARNING: This can be a potentially slow & memory intensive operation and
// should only be used when absolutely necessary / sparingly.
virtual SyncDataList GetAllSyncData(ModelType type) const = 0;
};
} // namespace syncer
#endif // SYNC_API_SYNC_CHANGE_PROCESSOR_H_
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