| /** |
| * @file ApplyTemplate.h |
| * ApplyTemplate 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 __APPLY_TEMPLATE_H__ |
| #define __APPLY_TEMPLATE_H__ |
| |
| #include <memory> |
| |
| #include "core/Processor.h" |
| #include "core/ProcessSession.h" |
| #include "core/FlowFile.h" |
| #include "core/Resource.h" |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace processors { |
| |
| /** |
| * Applies a mustache template using incoming attributes as template parameters. |
| */ |
| class ApplyTemplate : public core::Processor { |
| public: |
| /*! |
| * Create a new processor |
| */ |
| ApplyTemplate(std::string name, utils::Identifier uuid = utils::Identifier()) |
| : Processor(name, uuid), |
| logger_(logging::LoggerFactory<ApplyTemplate>::getLogger()) {} |
| ~ApplyTemplate() = default; |
| static constexpr char const *ProcessorName = "ApplyTemplate"; |
| |
| //! Supported Properties |
| static core::Property Template; |
| |
| //! Supported Relationships |
| static core::Relationship Success; |
| |
| void onTrigger(const std::shared_ptr<core::ProcessContext> &context, |
| const std::shared_ptr<core::ProcessSession> &session); |
| void initialize(void); |
| |
| //! Write callback for outputting files generated by applying template to input |
| class WriteCallback : public OutputStreamCallback { |
| public: |
| WriteCallback(const std::string &templateFile, const std::shared_ptr<core::FlowFile> &flow_file); |
| int64_t process(std::shared_ptr<io::BaseStream> stream); |
| |
| private: |
| std::shared_ptr<logging::Logger> logger_; |
| std::string template_file_; |
| std::shared_ptr<core::FlowFile> flow_file_; |
| }; |
| |
| private: |
| std::shared_ptr<logging::Logger> logger_; |
| }; |
| |
| REGISTER_RESOURCE(ApplyTemplate, "Applies the mustache template specified by the \"Template\" property and writes the output to the flow file content. " |
| "FlowFile attributes are used as template parameters."); |
| |
| } /* namespace processors */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |
| |
| #endif |