1 /* 2 * Copyright (C) 2022-2023 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 PASTE_BOARD_DISTRIBUTE_MODULE_CONFIG_H 17 #define PASTE_BOARD_DISTRIBUTE_MODULE_CONFIG_H 18 19 #include "api/visibility.h" 20 #include <atomic> 21 #include <functional> 22 #include "device/dm_adapter.h" 23 24 namespace OHOS { 25 namespace MiscServices { 26 class API_EXPORT DistributedModuleConfig : protected DMAdapter::DMObserver { 27 public: 28 using Observer = std::function<void(bool isOn)>; 29 bool IsOn(); 30 void Watch(Observer observer); 31 void Init(); 32 void DeInit(); 33 protected: 34 void Online(const std::string &device) override; 35 void Offline(const std::string &device) override; 36 void OnReady(const std::string &device) override; 37 private: 38 int32_t GetEnabledStatus(); 39 void Notify(); 40 void GetRetryTask(); 41 size_t GetDeviceNum(); 42 Observer observer_ = nullptr; 43 bool status_ = false; 44 std::atomic<bool> retrying_ = false; 45 static constexpr uint32_t RETRY_TIMES = 30; 46 static constexpr uint32_t RETRY_INTERVAL = 1000; //milliseconds 47 static constexpr uint32_t RANDOM_MAX = 500; //milliseconds 48 static constexpr uint32_t RANDOM_MIN = 5; //milliseconds 49 static constexpr const char* SUPPORT_STATUS = "1"; 50 }; 51 } // namespace MiscServices 52 } // namespace OHOS 53 #endif // PASTE_BOARD_DISTRIBUTE_MODULE_CONFIG_H 54