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 ASSET_CHANGE_TIMER_H 16 #define ASSET_CHANGE_TIMER_H 17 18 #include "executor_pool.h" 19 #include "flat_object_store.h" 20 21 namespace OHOS::ObjectStore { 22 class AssetChangeTimer { 23 public: 24 static AssetChangeTimer *GetInstance(FlatObjectStore *flatObjectStore); 25 void OnAssetChanged( 26 const std::string &sessionId, const std::string &assetKey, std::shared_ptr<ObjectWatcher> watcher); 27 28 private: 29 AssetChangeTimer() = default; 30 ~AssetChangeTimer() = default; 31 AssetChangeTimer(const AssetChangeTimer &) = delete; 32 AssetChangeTimer &operator=(const AssetChangeTimer &) = delete; 33 explicit AssetChangeTimer(FlatObjectStore *flatObjectStore); 34 void StartTimer(const std::string &sessionId, const std::string &assetKey, std::shared_ptr<ObjectWatcher> watcher); 35 void StopTimer(const std::string &sessionId, const std::string &assetKey); 36 std::function<void()> ProcessTask( 37 const std::string &sessionId, const std::string &assetKey, std::shared_ptr<ObjectWatcher> watcher); 38 uint32_t HandleAssetChanges(const std::string &sessionId, const std::string &assetKey); 39 bool GetAssetValue(const std::string &sessionId, const std::string &assetKey, Asset &assetValue); 40 41 std::mutex mutex_; 42 std::unordered_map<std::string, Executor::TaskId> assetChangeTasks_; 43 FlatObjectStore *flatObjectStore_ = nullptr; 44 std::shared_ptr<ExecutorPool> executor_; 45 46 static std::mutex instanceMutex; 47 static AssetChangeTimer *instance; 48 }; 49 } // namespace OHOS::ObjectStore 50 #endif // ASSET_CHANGE_TIMER_H