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// Copyright 2019 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.
#include <memory>
#include <utility>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/optional.h"
#include "components/sync/model/model_error.h"
#include "components/sync/protocol/entity_metadata.pb.h"
#include "components/sync/protocol/model_type_state.pb.h"
namespace syncer {
class ModelTypeControllerDelegate;
class NigoriSyncBridge;
struct EntityData;
struct NigoriMetadataBatch {
NigoriMetadataBatch(NigoriMetadataBatch&& other);
sync_pb::ModelTypeState model_type_state;
base::Optional<sync_pb::EntityMetadata> entity_metadata;
// Interface analogous to ModelTypeChangeProcessor for Nigori, used to propagate
// local changes from the bridge to the processor.
class NigoriLocalChangeProcessor {
NigoriLocalChangeProcessor() = default;
virtual ~NigoriLocalChangeProcessor() = default;
// The Nigori model is expected to call this method as soon as possible during
// initialization, and must be called before invoking Put(). |bridge| must not
// be null and most outlive the NigoriLocalChangeProcessor.
virtual void ModelReadyToSync(NigoriSyncBridge* bridge,
NigoriMetadataBatch nigori_metadata) = 0;
// Informs the Nigori processor of a new or updated Nigori entity.
virtual void Put(std::unique_ptr<EntityData> entity_data) = 0;
// Returns both the entity metadata and model type state such that the Nigori
// model takes care of persisting them.
virtual NigoriMetadataBatch GetMetadata() = 0;
// Reports an error in the model to sync. Should be called for any persistence
// or consistency error the bridge encounters outside of a method that allows
// returning a ModelError directly. Outstanding callbacks are not expected to
// be called after an error. This will result in sync being temporarily
// disabled (generally until the next restart).
virtual void ReportError(const ModelError& error) = 0;
// Returns the delegate for the controller.
virtual base::WeakPtr<ModelTypeControllerDelegate>
GetControllerDelegate() = 0;
} // namespace syncer