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 "utils/ref_count.h" 24 #include "visibility.h" 25 namespace OHOS::DistributedData { 26 class API_EXPORT DeviceMatrix { 27 public: 28 using TimePoint = std::chrono::steady_clock::time_point; 29 static constexpr uint16_t META_STORE_MASK = 0x0001; 30 enum : int32_t { 31 MATRIX_ONLINE = Event::EVT_CUSTOM, 32 MATRIX_META_FINISHED, 33 MATRIX_BROADCAST, 34 MATRIX_BUTT 35 }; 36 static DeviceMatrix &GetInstance(); 37 bool Initialize(uint32_t token, std::string storeId); 38 void Online(const std::string &device, RefCount refCount = {}); 39 void Offline(const std::string &device); 40 uint16_t OnBroadcast(const std::string &device, uint16_t code); 41 void OnChanged(uint16_t code); 42 void OnChanged(const StoreMetaData &metaData); 43 void OnExchanged(const std::string &device, uint16_t code, bool isRemote = false); 44 bool IsChangedInTerm(const StoreMetaData &metaData, uint64_t term); 45 uint16_t GetCode(const StoreMetaData &metaData); 46 std::pair<bool, uint16_t> GetMask(const std::string &device); 47 std::pair<bool, uint16_t> GetRemoteMask(const std::string &device); 48 MatrixMetaData GetMatrixMeta(const std::string &device); 49 void Clear(); 50 51 private: 52 static constexpr uint32_t CURRENT_VERSION = 2; 53 static constexpr uint32_t CURRENT_MASK = 0x000E; 54 static constexpr size_t MAX_DEVICES = 16; 55 56 DeviceMatrix(); 57 ~DeviceMatrix(); 58 DeviceMatrix(const DeviceMatrix &) = delete; 59 DeviceMatrix(DeviceMatrix &&) noexcept = delete; 60 DeviceMatrix &operator=(const DeviceMatrix &) = delete; 61 DeviceMatrix &operator=(DeviceMatrix &&) noexcept = delete; SetMask(size_t index)62 static inline uint16_t SetMask(size_t index) 63 { 64 return 0x1 << (index + 1); 65 } 66 67 uint16_t ConvertMask(const std::string &device, uint16_t code); 68 69 struct Mask { 70 uint16_t bitset = META_STORE_MASK | CURRENT_MASK; 71 }; 72 73 uint32_t tokenId_ = 0; 74 std::string storeId_; 75 std::mutex mutex_; 76 std::map<std::string, Mask> onLines_; 77 std::map<std::string, Mask> offLines_; 78 std::map<std::string, Mask> remotes_; 79 std::vector<std::string> maskApps_ = { "distributed_device_profile_service", "bundle_manager_service", 80 "dtbhardware_manager_service" }; 81 LRUBucket<std::string, MatrixMetaData> versions_{ MAX_DEVICES }; 82 LRUBucket<uint32_t, TimePoint> changeTime_ { 64 }; 83 }; 84 } // namespace OHOS::DistributedData 85 #endif // OHOS_DISTRIBUTED_DATA_SERVICE_MATRIX_DEVICE_MATRIX_H 86