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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYNC_MODEL_METADATA_BATCH_H_
#define COMPONENTS_SYNC_MODEL_METADATA_BATCH_H_
#include <map>
#include <memory>
#include <string>
#include "components/sync/protocol/data_type_state.pb.h"
namespace sync_pb {
class EntityMetadata;
} // namespace sync_pb
namespace syncer {
// Map of storage keys to EntityMetadata proto.
using EntityMetadataMap =
std::map<std::string, std::unique_ptr<sync_pb::EntityMetadata>>;
// Container used to pass sync metadata from services to their processor.
class MetadataBatch {
public:
MetadataBatch();
MetadataBatch(MetadataBatch&&);
~MetadataBatch();
MetadataBatch(const MetadataBatch&) = delete;
// Read-only access to the entire metadata map.
const EntityMetadataMap& GetAllMetadata() const;
// Allows the caller to take ownership of the entire metadata map. This is
// done because the caller will probably swap out all the EntityMetadata
// protos from the map for performance reasons.
EntityMetadataMap TakeAllMetadata();
// Add `metadata` for `storage_key` to the batch.
void AddMetadata(const std::string& storage_key,
std::unique_ptr<sync_pb::EntityMetadata> metadata);
// Get the DataTypeState for this batch.
const sync_pb::DataTypeState& GetDataTypeState() const;
// Set the DataTypeState for this batch.
void SetDataTypeState(const sync_pb::DataTypeState& state);
private:
EntityMetadataMap metadata_map_;
sync_pb::DataTypeState state_;
};
} // namespace syncer
#endif // COMPONENTS_SYNC_MODEL_METADATA_BATCH_H_
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