| /** |
| * FetchOPC 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 NIFI_MINIFI_CPP_FetchOPCProcessor_H |
| #define NIFI_MINIFI_CPP_FetchOPCProcessor_H |
| |
| #include <memory> |
| #include <string> |
| #include <list> |
| #include <map> |
| #include <mutex> |
| #include <thread> |
| |
| #include "opc.h" |
| #include "opcbase.h" |
| #include "utils/ByteArrayCallback.h" |
| #include "FlowFileRecord.h" |
| #include "core/Processor.h" |
| #include "core/ProcessSession.h" |
| #include "core/Core.h" |
| #include "core/Property.h" |
| #include "core/Resource.h" |
| #include "controllers/SSLContextService.h" |
| #include "core/logging/LoggerConfiguration.h" |
| #include "utils/Id.h" |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace processors { |
| |
| class FetchOPCProcessor : public BaseOPCProcessor { |
| public: |
| static constexpr char const* ProcessorName = "FetchOPC"; |
| // Supported Properties |
| static core::Property NodeIDType; |
| static core::Property NodeID; |
| static core::Property NameSpaceIndex; |
| static core::Property MaxDepth; |
| |
| // Supported Relationships |
| static core::Relationship Success; |
| static core::Relationship Failure; |
| |
| FetchOPCProcessor(std::string name, utils::Identifier uuid = utils::Identifier()) |
| : BaseOPCProcessor(name, uuid), nameSpaceIdx_(0), nodesFound_(0), variablesFound_(0), maxDepth_(0) { |
| logger_ = logging::LoggerFactory<FetchOPCProcessor>::getLogger(); |
| } |
| |
| virtual void onSchedule(const std::shared_ptr<core::ProcessContext> &context, const std::shared_ptr<core::ProcessSessionFactory> &factory) override; |
| |
| virtual void onTrigger(const std::shared_ptr<core::ProcessContext> &context, const std::shared_ptr<core::ProcessSession> &session) override; |
| |
| virtual void initialize(void) override; |
| |
| protected: |
| bool nodeFoundCallBack(opc::Client& client, const UA_ReferenceDescription *ref, const std::string& path, |
| const std::shared_ptr<core::ProcessContext> &context, const std::shared_ptr<core::ProcessSession> &session); |
| |
| void OPCData2FlowFile(const opc::NodeData& opcnode, const std::shared_ptr<core::ProcessContext> &context, const std::shared_ptr<core::ProcessSession> &session); |
| |
| class WriteCallback : public OutputStreamCallback { |
| std::string data_; |
| public: |
| WriteCallback(std::string&& data) |
| : data_(data) { |
| } |
| int64_t process(std::shared_ptr<io::BaseStream> stream) { |
| return stream->write(reinterpret_cast<uint8_t*>(const_cast<char*>(data_.c_str())), data_.size()); |
| } |
| }; |
| std::string nodeID_; |
| int32_t nameSpaceIdx_; |
| opc::OPCNodeIDType idType_; |
| uint32_t nodesFound_; |
| uint32_t variablesFound_; |
| uint64_t maxDepth_; |
| |
| private: |
| std::mutex onTriggerMutex_; |
| std::vector<UA_NodeId> translatedNodeIDs_; // Only used when user provides path, path->nodeid translation is only done once |
| |
| }; |
| |
| REGISTER_RESOURCE(FetchOPCProcessor, "Fetches OPC-UA node"); |
| |
| } /* namespace processors */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |
| |
| #endif //NIFI_MINIFI_CPP_FetchOPCProcessor_H |