1/*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#ifndef OHOS_DISTRIBUTED_DATA_DATAMGR_SERVICE_KVDB_WATCHER_H
17#define OHOS_DISTRIBUTED_DATA_DATAMGR_SERVICE_KVDB_WATCHER_H
18#include <mutex>
19#include <shared_mutex>
20
21#include "ikvstore_observer.h"
22#include "kv_store_changed_data.h"
23#include "store/general_value.h"
24#include "store/general_watcher.h"
25
26namespace OHOS::DistributedKv {
27class KVDBWatcher : public DistributedData::GeneralWatcher {
28public:
29    KVDBWatcher();
30    int32_t OnChange(const Origin &origin, const PRIFields &primaryFields, ChangeInfo &&values) override;
31    int32_t OnChange(const Origin &origin, const GeneralWatcher::Fields &fields, ChangeData &&datas) override;
32    sptr<IKvStoreObserver> GetObserver() const;
33    void SetObserver(sptr<IKvStoreObserver> observer);
34
35private:
36    std::vector<Entry> ConvertToEntries(const std::vector<DistributedData::Values> &values);
37    std::vector<std::string> ConvertToKeys(const std::vector<PRIValue> &values);
38    mutable std::shared_mutex mutex_;
39    sptr<IKvStoreObserver> observer_;
40};
41} // namespace OHOS::DistributedKv
42#endif // OHOS_DISTRIBUTED_DATA_DATAMGR_SERVICE_KVDB_WATCHER_H
43