1 /*
2  * Copyright (c) 2022 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 WATCHER_H
17 #define WATCHER_H
18 
19 #include <cstdint>
20 
21 #include "kv_store_delegate_manager.h"
22 #include "logger.h"
23 
24 namespace OHOS::ObjectStore {
25 class Watcher : public DistributedDB::KvStoreObserver {
26 public:
27     Watcher(const std::string &sessionId);
28     virtual ~Watcher() = default;
29     virtual void OnChanged(
30         const std::string &sessionId, const std::vector<std::string> &changedData, bool enableTransfer) = 0;
31     void OnChange(const DistributedDB::KvStoreChangedData &data) override;
32 
33 private:
34     std::string sessionId_;
35 };
36 } // namespace OHOS::ObjectStore
37 
38 #endif // WATCHER_H