text: /**
   *
   * 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.
   */
  #ifndef LIBMINIFI_INCLUDE_CONTROLLERS_UPDATEPOLICYCONTROLLERSERVICE_H_
  #define LIBMINIFI_INCLUDE_CONTROLLERS_UPDATEPOLICYCONTROLLERSERVICE_H_
  
  #include <iostream>
  #include <memory>
  #include <limits>
  #include "core/Resource.h"
  #include "utils/StringUtils.h"
  #include "io/validation.h"
  #include "core/controller/ControllerService.h"
  #include "core/logging/LoggerConfiguration.h"
  #include "core/state/UpdatePolicy.h"
  
  namespace org {
  namespace apache {
  namespace nifi {
  namespace minifi {
  namespace controllers {
  
  /**
   * Purpose: UpdatePolicyControllerService allows a flow specific policy on allowing or disallowing updates.
   * Since the flow dictates the purpose of a device it will also be used to dictate updates to specific components.
   */
  class UpdatePolicyControllerService : public core::controller::ControllerService, public std::enable_shared_from_this<UpdatePolicyControllerService> {
   public:
    explicit UpdatePolicyControllerService(const std::string &name, const std::string &id)
        : ControllerService(name, id),
          persist_updates_(false),
          policy_(new state::UpdatePolicy(false)),
          logger_(logging::LoggerFactory<UpdatePolicyControllerService>::getLogger()) {
    }
  
    explicit UpdatePolicyControllerService(const std::string &name, utils::Identifier uuid = utils::Identifier())
        : ControllerService(name, uuid),
          persist_updates_(false),
          policy_(new state::UpdatePolicy(false)),
          logger_(logging::LoggerFactory<UpdatePolicyControllerService>::getLogger()) {
    }
  
    explicit UpdatePolicyControllerService(const std::string &name, const std::shared_ptr<Configure> &configuration)
        : UpdatePolicyControllerService(name) {
      setConfiguration(configuration);
      initialize();
    }
  
    static core::Property AllowAllProperties;
    static core::Property PersistUpdates;
    static core::Property AllowedProperties;
    static core::Property DisallowedProperties;
  
    void initialize();
  
    void yield();
  
    bool isRunning();
  
    bool isWorkAvailable();
  
    void onEnable();
  
    bool canUpdate(const std::string &property) const {
      return policy_->canUpdate(property);
    }
  
    bool persistUpdates() const {
      return persist_updates_;
    }
  
   private:
  
    bool persist_updates_;
    std::unique_ptr<state::UpdatePolicy> policy_;
    std::shared_ptr<logging::Logger> logger_;
  };
  
  REGISTER_RESOURCE(UpdatePolicyControllerService, "UpdatePolicyControllerService allows a flow specific policy on allowing or disallowing updates. "
      "Since the flow dictates the purpose of a device it will also be used to dictate updates to specific components.");
  
  } /* namespace controllers */
  } /* namespace minifi */
  } /* namespace nifi */
  } /* namespace apache */
  } /* namespace org */
  
  #endif /* LIBMINIFI_INCLUDE_CONTROLLERS_UPDATEPOLICYCONTROLLERSERVICE_H_ */
  