lordgamez commented on code in PR #1866: URL: https://github.com/apache/nifi-minifi-cpp/pull/1866#discussion_r1842192454
########## extensions/standard-processors/processors/SplitRecord.h: ########## @@ -0,0 +1,86 @@ +/** + * 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. + */ +#pragma once + +#include "core/Annotation.h" +#include "core/ProcessContext.h" +#include "core/ProcessSession.h" +#include "core/ProcessSessionFactory.h" +#include "core/PropertyDefinition.h" +#include "core/PropertyDefinitionBuilder.h" +#include "core/RelationshipDefinition.h" +#include "core/logging/Logger.h" +#include "controllers/RecordSetReader.h" +#include "controllers/RecordSetWriter.h" +#include "core/AbstractProcessor.h" + +namespace org::apache::nifi::minifi::processors { + +class SplitRecord final : public core::AbstractProcessor<SplitRecord> { + public: + using core::AbstractProcessor<SplitRecord>::AbstractProcessor; + + EXTENSIONAPI static constexpr const char* Description = "Splits up an input FlowFile that is in a record-oriented data format into multiple smaller FlowFiles"; + + EXTENSIONAPI static constexpr auto RecordReader = core::PropertyDefinitionBuilder<>::createProperty("Record Reader") + .withDescription("Specifies the Controller Service to use for reading incoming data") + .isRequired(true) + .withAllowedTypes<minifi::core::RecordSetReader>() + .build(); + EXTENSIONAPI static constexpr auto RecordWriter = core::PropertyDefinitionBuilder<>::createProperty("Record Writer") + .withDescription("Specifies the Controller Service to use for writing out the records") + .isRequired(true) + .withAllowedTypes<minifi::core::RecordSetWriter>() + .build(); + EXTENSIONAPI static constexpr auto RecordsPerSplit = core::PropertyDefinitionBuilder<>::createProperty("Records Per Split") + .withDescription("Specifies how many records should be written to each 'split' or 'segment' FlowFile") + .isRequired(true) + .supportsExpressionLanguage(true) + .build(); + + EXTENSIONAPI static constexpr auto Properties = std::to_array<core::PropertyReference>({ + RecordReader, + RecordWriter, + RecordsPerSplit + }); + + EXTENSIONAPI static constexpr auto Failure = core::RelationshipDefinition{"failure", + "If a FlowFile cannot be transformed from the configured input format to the configured output format, the unchanged FlowFile will be routed to this relationship."}; + EXTENSIONAPI static constexpr auto Splits = core::RelationshipDefinition{"splits", + "The individual 'segments' of the original FlowFile will be routed to this relationship."}; + EXTENSIONAPI static constexpr auto Original = core::RelationshipDefinition{"original", + "Upon successfully splitting an input FlowFile, the original FlowFile will be sent to this relationship."}; + EXTENSIONAPI static constexpr auto Relationships = std::array{Failure, Splits, Original}; + Review Comment: Added in https://github.com/apache/nifi-minifi-cpp/pull/1866/commits/b9de420231ec51690b584cab09189236bfe2eabd ########## extensions/standard-processors/processors/SplitRecord.cpp: ########## @@ -0,0 +1,119 @@ +/** + * 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. + */ +#include "SplitRecord.h" + +#include "core/Resource.h" +#include "nonstd/expected.hpp" +#include "utils/GeneralUtils.h" + +namespace org::apache::nifi::minifi::processors { +namespace { +template<typename RecordSetIO> +std::shared_ptr<RecordSetIO> getRecordSetIO(core::ProcessContext& context, const core::PropertyReference& property) { + std::string service_name; + if (context.getProperty(property, service_name) && !IsNullOrEmpty(service_name)) { + auto record_set_io = std::dynamic_pointer_cast<RecordSetIO>(context.getControllerService(service_name)); + if (!record_set_io) + return nullptr; + return record_set_io; + } + return nullptr; +} +} // namespace + +void SplitRecord::onSchedule(core::ProcessContext& context, core::ProcessSessionFactory&) { + record_set_reader_ = getRecordSetIO<core::RecordSetReader>(context, RecordReader); + if (!record_set_reader_) { + throw Exception(ExceptionType::PROCESS_SCHEDULE_EXCEPTION, "Record Reader set is missing or invalid"); + } + record_set_writer_ = getRecordSetIO<core::RecordSetWriter>(context, RecordWriter); + if (!record_set_writer_) { + throw Exception(ExceptionType::PROCESS_SCHEDULE_EXCEPTION, "Record Writer set is missing or invalid"); + } +} + +nonstd::expected<std::size_t, std::string> SplitRecord::readRecordsPerSplit(core::ProcessContext& context, const core::FlowFile& original_flow_file) { + std::string value; + std::size_t records_per_split = 0; + if (context.getProperty(RecordsPerSplit, value, &original_flow_file)) { + if (!core::Property::StringToInt(value, records_per_split)) { + return nonstd::make_unexpected("Failed to convert Records Per Split property to an integer"); + } else if (records_per_split < 1) { + return nonstd::make_unexpected("Records per split should be set to a number larger than 0"); + } + } else { + return nonstd::make_unexpected("Records per split should be set to a valid number larger than 0"); Review Comment: Fixed in https://github.com/apache/nifi-minifi-cpp/pull/1866/commits/b9de420231ec51690b584cab09189236bfe2eabd -- This is an automated message from the Apache Git Service. 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