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_DISTRIBUTED_DATABASE_H 17 #define BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_DATABASE_H 18 19 #include <chrono> 20 #include <mutex> 21 #include <string> 22 #include <vector> 23 24 #include "distributed_kv_data_manager.h" 25 #include "singleton.h" 26 27 #include "distributed_database_callback.h" 28 #include "distributed_device_callback.h" 29 #include "distributed_flow_control.h" 30 31 namespace OHOS { 32 namespace Notification { 33 class DistributedDatabase : private DistributedFlowControl { 34 public: 35 using Entry = DistributedKv::Entry; 36 using DeviceInfo = DistributedKv::DeviceInfo; 37 38 /** 39 * @brief The constructor. 40 * 41 * @param databaseCb Distributed notification info changed callback object. 42 * @param deviceCb Device connection info changed callback object. 43 */ 44 DistributedDatabase( 45 std::shared_ptr<DistributedDatabaseCallback> databaseCb, std::shared_ptr<DistributedDeviceCallback> deviceCb); 46 47 /** 48 * @brief The deconstructor. 49 */ 50 ~DistributedDatabase(); 51 52 /** 53 * @brief Put a key-value to database. 54 * 55 * @param key Indicates the key. 56 * @param value Indicates the value. 57 * @return Whether to put key-value success. 58 */ 59 bool PutToDistributedDB(const std::string &key, const std::string &value); 60 61 /** 62 * @brief Get the value of its key from database. 63 * 64 * @param key Indicates the key. 65 * @param value Indicates the value. 66 * @return Whether to get key-value success. 67 */ 68 bool GetFromDistributedDB(const std::string &key, std::string &value); 69 70 /** 71 * @brief Get all entries which key start with prefixKey. 72 * 73 * @param perfixkey Indicates the prefix to be searched. 74 * @param entries Indicates the entries will be returned in this parameter. 75 * @return Whether to get entries success. 76 */ 77 bool GetEntriesFromDistributedDB(const std::string &prefixKey, std::vector<Entry> &entries); 78 79 /** 80 * @brief Delete a key-value of its key from database. 81 * 82 * @param key Indicates the key. 83 * @return Whether to delete key-value success. 84 */ 85 bool DeleteToDistributedDB(const std::string &key); 86 87 /** 88 * @brief Clear all entries which put by specified device. 89 * 90 * @param deviceId Indicates the id of specified device. 91 * @return Whether to clear device entries success. 92 */ 93 bool ClearDataByDevice(const std::string &deviceId); 94 95 /** 96 * @brief Get local device id. 97 * 98 * @param deviceId Indicates the id of local device. 99 * @return Whether to get device id success. 100 */ 101 bool GetLocalDeviceId(std::string &deviceId); 102 103 /** 104 * @brief Get local device info. 105 * 106 * @param localInfo Indicates the infomation of local device. 107 * @return Whether to get device infomation success. 108 */ 109 bool GetLocalDeviceInfo(DeviceInfo &localInfo); 110 111 /** 112 * @brief Get all devices info on the network. 113 * 114 * @param deviceList Indicates the infomation list of devices. 115 * @return Whether to get devices infomation success. 116 */ 117 bool GetDeviceInfoList(std::vector<DeviceInfo> &deviceList); 118 119 /** 120 * @brief Recreate the database of distributed notification 121 * 122 * @return Whether to recreate the database success. 123 */ 124 bool RecreateDistributedDB(); 125 126 bool OnDeviceConnected(); 127 128 private: 129 void GetKvDataManager(void); 130 bool CheckKvDataManager(void); 131 void GetKvStore(void); 132 bool CheckKvStore(void); 133 134 private: 135 std::mutex mutex_; 136 std::unique_ptr<DistributedKv::DistributedKvDataManager> kvDataManager_; 137 std::shared_ptr<DistributedKv::SingleKvStore> kvStore_; 138 std::shared_ptr<DistributedDatabaseCallback> databaseCb_; 139 std::shared_ptr<DistributedDeviceCallback> deviceCb_; 140 141 std::string localDeviceId_; 142 143 DISALLOW_COPY_AND_MOVE(DistributedDatabase); 144 }; 145 } // namespace Notification 146 } // namespace OHOS 147 148 #endif // BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_DATABASE_H