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_JAVACONTROLLERSERVICE_H_
  #define LIBMINIFI_INCLUDE_CONTROLLERS_JAVACONTROLLERSERVICE_H_
  
  #include <iostream>
  #include <memory>
  #include <vector>
  #include <string>
  
  #include "../jvm/JVMLoader.h"
  #include "NarClassLoader.h"
  #include "core/Resource.h"
  #include "utils/StringUtils.h"
  #include "JavaServicer.h"
  #include "io/validation.h"
  #include "core/controller/ControllerService.h"
  #include "core/logging/LoggerConfiguration.h"
  
  namespace org {
  namespace apache {
  namespace nifi {
  namespace minifi {
  namespace jni {
  namespace controllers {
  
  /**
   * Purpose and Justification: Java Controller Service is intended to be used either within the flow or
   * based on a static load in JVM Creator. The static load simply loads via minifi properties.
   *
   */
  class JavaControllerService : public core::controller::ControllerService, public std::enable_shared_from_this<JavaControllerService>, public JavaServicer {
   public:
    explicit JavaControllerService(const std::string &name, const utils::Identifier &uuid = {})
        : ControllerService(name, uuid),
          loader(nullptr),
          logger_(logging::LoggerFactory<JavaControllerService>::getLogger()) {
      initialized_ = false;
    }
  
    explicit JavaControllerService(const std::string &name, const std::shared_ptr<Configure> &configuration)
        : ControllerService(name),
          loader(nullptr),
          logger_(logging::LoggerFactory<JavaControllerService>::getLogger()) {
      initialized_ = false;
      setConfiguration(configuration);
      initialize();
    }
  
    static core::Property NarDirectory;
    static core::Property NarDeploymentDirectory;
    static core::Property NarDocumentDirectory;
  
    void initialize() override;
  
    void yield() override {
    }
  
    bool isRunning() override {
      return getState() == core::controller::ControllerServiceState::ENABLED;
    }
  
    bool isWorkAvailable() override {
      return false;
    }
  
    void onEnable() override;
  
    std::vector<std::string> getPaths() const {
      return classpaths_;
    }
  
    JavaClass getObjectClass(const std::string &name, jobject jobj) {
      return loader->getObjectClass(name, jobj);
    }
  
    JavaClass loadClass(const std::string &class_name_) override {
      std::string modifiedName = class_name_;
      modifiedName = utils::StringUtils::replaceAll(modifiedName, ".", "/");
      return loader->load_class(modifiedName);
    }
  
    JNIEnv *attach() override {
      return loader->attach();
    }
    void detach() override {
        loader->detach();
      }
  
  
  
    jobject getClassLoader() override {
      return loader->getClassLoader();
    }
  
    template<typename T>
    void setReference(JNIEnv *env, jobject obj, T *t) {
      loader->setReference(obj, env, t);
    }
  
    template<typename T>
    void putNativeFunctionMapping(JNIEnv *env, JavaClass &clazz, const std::string &fieldStr = "nativePtr", const std::string &arg = "J") {
      JVMLoader::putClassMapping<T>(env, clazz, fieldStr, arg);
    }
  
    /**
     * Retrieves a matching annotation
     * @param requested class name,
     * @param method_name method name to obtain
     */
    std::pair<std::string, std::string> getAnnotation(const std::string &requested_name, const std::string &method_name) {
      return nar_loader_->getAnnotation(requested_name, method_name);
    }
  
    /**
       * Retrieves a matching annotation
       * @param requested class name,
       * @param method_name method name to obtain
       */
      std::map<std::string, std::string> getAnnotations(const std::string &requested_name, const std::string &annotation_name) {
        return nar_loader_->getAnnotations(requested_name, annotation_name);
      }
    /**
     * creates a new instance
     * @param requested_name reqeusted class name
     */
    jobject newInstance(const std::string &requested_name) {
      return nar_loader_->newInstance(requested_name);
    }
  
   protected:
  
   // void addPath(std::vector<std::string> &jarFiles, const std::string &dir);
  
   private:
  
    JavaClass narClassLoaderClazz;
  
    std::mutex initialization_mutex_;
  
    std::atomic<bool> initialized_;
  
    std::vector<std::string> classpaths_;
  
    std::unique_ptr<NarClassLoader> nar_loader_;
  
    JVMLoader *loader;
  
    std::shared_ptr<logging::Logger> logger_;
  };
  
  REGISTER_RESOURCE(JavaControllerService, "Allows specification of nars to be used within referenced processors. ");
  
  } /* namespace controllers */
  } /* namespace jni */
  } /* namespace minifi */
  } /* namespace nifi */
  } /* namespace apache */
  } /* namespace org */
  
  #endif /* LIBMINIFI_INCLUDE_CONTROLLERS_JAVACONTROLLERSERVICE_H_ */
  