Program Listing for File write_to_file.hpp

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/* * SPDX-FileCopyrightText: Copyright (c) 2021-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved. * SPDX-License-Identifier: Apache-2.0 * * Licensed 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 * * * * 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. */ #pragma once #include "morpheus/export.h" #include "morpheus/messages/meta.hpp" #include "morpheus/objects/file_types.hpp" #include <boost/fiber/context.hpp> #include <mrc/segment/builder.hpp> #include <mrc/segment/object.hpp> #include <pymrc/node.hpp> #include <rxcpp/rx.hpp> #include <fstream> #include <functional> // for function #include <memory> #include <string> #include <thread> namespace morpheus { /****** Component public implementations *******************/ /****** WriteToFileStage********************************/ class MORPHEUS_EXPORT WriteToFileStage : public mrc::pymrc::PythonNode<std::shared_ptr<MessageMeta>, std::shared_ptr<MessageMeta>> { public: using base_t = mrc::pymrc::PythonNode<std::shared_ptr<MessageMeta>, std::shared_ptr<MessageMeta>>; using typename base_t::sink_type_t; using typename base_t::source_type_t; using typename base_t::subscribe_fn_t; WriteToFileStage(const std::string& filename, std::ios::openmode mode = std::ios::out, FileTypes file_type = FileTypes::Auto, bool include_index_col = true, bool flush = false); private: void close(); void write_json(sink_type_t& msg); void write_csv(sink_type_t& msg); void write_parquet(sink_type_t& msg); subscribe_fn_t build_operator(); bool m_is_first{}; bool m_include_index_col; bool m_flush; std::ofstream m_fstream; std::function<void(sink_type_t&)> m_write_func; }; /****** WriteToFileStageInterfaceProxy******************/ struct MORPHEUS_EXPORT WriteToFileStageInterfaceProxy { static std::shared_ptr<mrc::segment::Object<WriteToFileStage>> init(mrc::segment::Builder& builder, const std::string& name, const std::string& filename, const std::string& mode = "w", FileTypes file_type = FileTypes::Auto, bool include_index_col = true, bool flush = false); }; // end of group } // namespace morpheus

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