| /** |
| * ExecuteJavaClass class declaration |
| * |
| * 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 EXTENSIONS_JNI_CLASSREGISTRAR_H_ |
| #define EXTENSIONS_JNI_CLASSREGISTRAR_H_ |
| |
| #include <memory> |
| |
| #include "FlowFileRecord.h" |
| #include "core/Processor.h" |
| #include "core/ProcessSession.h" |
| #include "core/Core.h" |
| #include "core/Property.h" |
| #include "core/Resource.h" |
| #include "concurrentqueue.h" |
| #include "core/logging/LoggerConfiguration.h" |
| #include "jvm/JavaControllerService.h" |
| #include "jvm/JniProcessContext.h" |
| #include "utils/Id.h" |
| #include "jvm/NarClassLoader.h" |
| #include "jvm/JniLogger.h" |
| #include "jvm/JniReferenceObjects.h" |
| #include "jvm/JniControllerServiceLookup.h" |
| #include "jvm/JniInitializationContext.h" |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace jni { |
| |
| class ClassRegistrar { |
| public: |
| static ClassRegistrar &getRegistrar() { |
| static ClassRegistrar registrar; |
| // do nothing. |
| return registrar; |
| } |
| |
| bool registerClasses(JNIEnv *env, std::shared_ptr<controllers::JavaControllerService> servicer, const std::string &className, JavaSignatures &signatures) { |
| std::lock_guard<std::mutex> lock(mutex_); |
| // load class before insertion. |
| if (registered_classes_.find(className) == std::end(registered_classes_)) { |
| auto cls = servicer->loadClass(className); |
| cls.registerMethods(env, signatures); |
| registered_classes_.insert(className); |
| return true; |
| } |
| return false; |
| } |
| private: |
| ClassRegistrar() = default; |
| |
| std::mutex mutex_; |
| std::set<std::string> registered_classes_; |
| }; |
| |
| } /* namespace jni */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |
| |
| #endif /* EXTENSIONS_JNI_CLASSREGISTRAR_H_ */ |