| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #pragma once |
| |
| #include <string> |
| #include <thread> |
| #include <mutex> |
| #include <memory> |
| #include <utility> |
| |
| #include "PersistableKeyValueStoreService.h" |
| #include "core/Core.h" |
| #include "properties/Configure.h" |
| #include "core/logging/Logger.h" |
| #include "core/logging/LoggerFactory.h" |
| #include "utils/Export.h" |
| |
| namespace org::apache::nifi::minifi::controllers { |
| |
| class AbstractAutoPersistingKeyValueStoreService : virtual public PersistableKeyValueStoreService { |
| public: |
| explicit AbstractAutoPersistingKeyValueStoreService(std::string name, const utils::Identifier& uuid = {}); |
| |
| ~AbstractAutoPersistingKeyValueStoreService() override; |
| |
| static constexpr const char* AlwaysPersistPropertyName = "Always Persist"; |
| static constexpr const char* AutoPersistenceIntervalPropertyName = "Auto Persistence Interval"; |
| |
| void onEnable() override; |
| void notifyStop() override; |
| |
| protected: |
| bool always_persist_; |
| std::chrono::milliseconds auto_persistence_interval_; |
| |
| std::thread persisting_thread_; |
| bool running_; |
| std::mutex persisting_mutex_; |
| std::condition_variable persisting_cv_; |
| void persistingThreadFunc(); |
| |
| private: |
| std::shared_ptr<core::logging::Logger> logger_ = core::logging::LoggerFactory<AbstractAutoPersistingKeyValueStoreService>::getLogger(); |
| |
| void stopPersistingThread(); |
| }; |
| |
| } // namespace org::apache::nifi::minifi::controllers |