joewitt commented on a change in pull request #4161: Nifi-7285 Add a processor:Split and copy content to attributes URL: https://github.com/apache/nifi/pull/4161#discussion_r398550550
########## File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/SplitAndToAttribute.java ########## @@ -0,0 +1,191 @@ +/* + * 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. + */ +package org.apache.nifi.processors.standard; + +import org.apache.nifi.annotation.behavior.*; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.flowfile.attributes.CoreAttributes; +import org.apache.nifi.flowfile.attributes.FragmentAttributes; +import org.apache.nifi.processor.AbstractProcessor; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.io.InputStreamCallback; +import org.apache.nifi.schema.access.SchemaNotFoundException; +import org.apache.nifi.serialization.*; +import org.apache.nifi.serialization.record.*; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.util.*; + +@EventDriven +@SupportsBatching +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) +@SideEffectFree +@CapabilityDescription("Read JSON or Avro to Attribute.") +@Tags({"JSON","Avro", "Split","Attribute"}) +@WritesAttributes({ + @WritesAttribute(attribute = "mime.type", description = "Sets the mime.type attribute to the MIME Type specified by the Record Writer for the FlowFiles routed to the 'splits' Relationship."), + @WritesAttribute(attribute = "record.count", description = "The number of records in the FlowFile. This is added to FlowFiles that are routed to the 'splits' Relationship."), + @WritesAttribute(attribute = "fragment.identifier", description = "All split FlowFiles produced from the same parent FlowFile will have the same randomly generated UUID added for this attribute"), + @WritesAttribute(attribute = "fragment.index", description = "A one-up number that indicates the ordering of the split FlowFiles that were created from a single parent FlowFile"), + @WritesAttribute(attribute = "fragment.count", description = "The number of split FlowFiles generated from the parent FlowFile"), + @WritesAttribute(attribute = "segment.original.filename ", description = "The filename of the parent FlowFile") +}) +public class SplitAndToAttribute extends AbstractProcessor { Review comment: I am a strong -1 on this proposed processor. PartitionRecord is likely to do what you want already (specify the fields you want extracted). This is generally an anti-pattern (needing to split to single entities and also extracting the attributes to flowfile attributes). There needs to be a lot more description on what the actual use case is. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
