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_ANS_STANDARD_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_PREFERENCES_DATABASE_H 17 #define BASE_NOTIFICATION_ANS_STANDARD_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_PREFERENCES_DATABASE_H 18 19 #include <mutex> 20 #include <string> 21 #include <vector> 22 23 #include "distributed_kv_data_manager.h" 24 #include "singleton.h" 25 26 #include "distributed_database_callback.h" 27 #include "distributed_device_callback.h" 28 #include "distributed_flow_control.h" 29 30 namespace OHOS { 31 namespace Notification { 32 class DistributedPreferencesDatabase : private DistributedFlowControl { 33 public: 34 using Entry = DistributedKv::Entry; 35 36 DistributedPreferencesDatabase(); 37 ~DistributedPreferencesDatabase(); 38 39 bool PutToDistributedDB(const std::string &key, const std::string &value); 40 bool GetFromDistributedDB(const std::string &key, std::string &value); 41 bool GetEntriesFromDistributedDB(const std::string &prefixKey, std::vector<Entry> &entries); 42 bool DeleteToDistributedDB(const std::string &key); 43 bool ClearDatabase(void); 44 45 private: 46 void GetKvDataManager(void); 47 bool CheckKvDataManager(void); 48 void GetKvStore(void); 49 bool CheckKvStore(void); 50 51 private: 52 std::mutex mutex_; 53 std::unique_ptr<DistributedKv::DistributedKvDataManager> kvDataManager_; 54 std::shared_ptr<DistributedKv::SingleKvStore> kvStore_; 55 56 DISALLOW_COPY_AND_MOVE(DistributedPreferencesDatabase); 57 }; 58 } // namespace Notification 59 } // namespace OHOS 60 61 #endif /* BASE_NOTIFICATION_ANS_STANDARD_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_DATABASE_H */