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 BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_DATABASE_CALLBACK_H 17 #define BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_DATABASE_CALLBACK_H 18 19 #include <string> 20 21 #include "kvstore_observer.h" 22 23 namespace OHOS { 24 namespace Notification { 25 class DistributedDatabaseCallback : public DistributedKv::KvStoreObserver { 26 public: 27 /** 28 * @brief Distributed notification Key-Value changed callback function structure. 29 */ 30 struct IDatabaseChange { 31 std::function<void(const std::string &deviceId, const std::string &key, const std::string &value)> OnInsert; 32 std::function<void(const std::string &deviceId, const std::string &key, const std::string &value)> OnUpdate; 33 std::function<void(const std::string &deviceId, const std::string &key, const std::string &value)> OnDelete; 34 }; 35 36 /** 37 * @brief The constructor. 38 * 39 * @param callback Key-Value changed callback. 40 */ 41 explicit DistributedDatabaseCallback(const IDatabaseChange &callback); 42 43 /** 44 * @brief The deconstructor. 45 */ 46 ~DistributedDatabaseCallback(); 47 48 private: 49 void OnChange(const DistributedKv::ChangeNotification &changeNotification) override; 50 51 private: 52 IDatabaseChange callback_; 53 }; 54 } // namespace Notification 55 } // namespace OHOS 56 57 #endif // BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_DATABASE_CALLBACK_H