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 #ifndef OHOS_DISTRIBUTED_DATA_SERVICE_MATRIX_DEVICE_MATRIX_H 16 #define OHOS_DISTRIBUTED_DATA_SERVICE_MATRIX_DEVICE_MATRIX_H 17 #include <map> 18 #include <mutex> 19 #include "eventcenter/event.h" 20 #include "lru_bucket.h" 21 #include "metadata/matrix_meta_data.h" 22 #include "metadata/store_meta_data.h" 23 #include "visibility.h" 24 namespace OHOS::DistributedData { 25 class API_EXPORT DeviceMatrix { 26 public: 27 static constexpr uint16_t META_STORE_MASK = 0x0001; 28 enum : int32_t { 29 MATRIX_ONLINE = Event::EVT_CUSTOM, 30 MATRIX_META_FINISHED, 31 MATRIX_BROADCAST, 32 MATRIX_BUTT 33 }; 34 static DeviceMatrix &GetInstance(); 35 bool Initialize(uint32_t token, std::string storeId); 36 void Online(const std::string &device); 37 void Offline(const std::string &device); 38 void OnBroadcast(const std::string &device, uint16_t code); 39 void OnChanged(uint16_t code); 40 void OnExchanged(const std::string &device, uint16_t code, bool isRemote = false); 41 uint16_t GetCode(const StoreMetaData &metaData); 42 43 private: 44 static constexpr uint32_t CURRENT_VERSION = 1; 45 static constexpr uint32_t CURRENT_MASK = 0x0002; 46 static constexpr size_t MAX_DEVICES = 16; 47 48 DeviceMatrix(); 49 ~DeviceMatrix(); 50 DeviceMatrix(const DeviceMatrix &) = delete; 51 DeviceMatrix(DeviceMatrix &&) noexcept = delete; 52 DeviceMatrix &operator=(const DeviceMatrix &) = delete; 53 DeviceMatrix &operator=(DeviceMatrix &&) noexcept = delete; SetMask(size_t index)54 static inline uint16_t SetMask(size_t index) 55 { 56 return 0x1 << (index + 1); 57 } 58 59 uint16_t ConvertMask(const std::string &device, uint16_t code); 60 MatrixMetaData GetMatrixMeta(const std::string &device); 61 62 struct Mask { 63 uint16_t bitset = META_STORE_MASK | CURRENT_MASK; 64 }; 65 66 uint32_t tokenId_ = 0; 67 std::string storeId_; 68 std::mutex mutex_; 69 std::map<std::string, Mask> onLines_; 70 std::map<std::string, Mask> offLines_; 71 std::map<std::string, Mask> remotes_; 72 std::vector<std::string> maskApps_ = { "distributed_device_profile_service" }; 73 LRUBucket<std::string, MatrixMetaData> versions_{ MAX_DEVICES }; 74 }; 75 } // namespace OHOS::DistributedData 76 #endif // OHOS_DISTRIBUTED_DATA_SERVICE_MATRIX_DEVICE_MATRIX_H 77