Github user brosander commented on a diff in the pull request: https://github.com/apache/nifi/pull/492#discussion_r66007647 --- Diff: nifi-nar-bundles/nifi-evtx-bundle/nifi-evtx-processors/src/main/java/org/apache/nifi/processors/evtx/ParseEvtx.java --- @@ -0,0 +1,353 @@ +/* + * 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.evtx; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.net.MediaType; +import com.google.common.primitives.UnsignedLong; +import org.apache.nifi.annotation.behavior.EventDriven; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.behavior.InputRequirement.Requirement; +import org.apache.nifi.annotation.behavior.SideEffectFree; +import org.apache.nifi.annotation.behavior.SupportsBatching; +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.logging.ComponentLog; +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.processors.evtx.parser.ChunkHeader; +import org.apache.nifi.processors.evtx.parser.FileHeader; +import org.apache.nifi.processors.evtx.parser.FileHeaderFactory; +import org.apache.nifi.processors.evtx.parser.MalformedChunkException; +import org.apache.nifi.processors.evtx.parser.Record; +import org.apache.nifi.processors.evtx.parser.XmlBxmlNodeVisitor; +import org.apache.nifi.processors.evtx.parser.bxml.RootNode; + +import javax.xml.stream.XMLOutputFactory; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamWriter; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.concurrent.atomic.AtomicReference; + +@SideEffectFree +@EventDriven +@SupportsBatching +@InputRequirement(Requirement.INPUT_REQUIRED) +@Tags({"logs", "windows", "event", "evtx", "message", "file"}) +@CapabilityDescription("Parses the contents of a Windows Event Log file (evtx) and writes the resulting xml to the FlowFile") +public class ParseEvtx extends AbstractProcessor { + public static final String RECORD = "Record"; + public static final String CHUNK = "Chunk"; + public static final String FILE = "File"; + public static final String EVENTS = "Events"; + public static final XMLOutputFactory XML_OUTPUT_FACTORY = XMLOutputFactory.newFactory(); + public static final String EVTX_EXTENSION = ".evtx"; + public static final String UNABLE_TO_PROCESS_DUE_TO = "Unable to process {} due to {}"; + public static final String XML_EXTENSION = ".xml"; + + @VisibleForTesting + static final Relationship REL_SUCCESS = new Relationship.Builder() + .name("success") + .description("Any FlowFile that was successfully converted from evtx to xml") + .build(); + + @VisibleForTesting + static final Relationship REL_FAILURE = new Relationship.Builder() + .name("failure") + .description("Any FlowFile that encountered an exception during conversion will be transferred to this relationship with as much parsing as possible done") + .build(); + + @VisibleForTesting + static final Relationship REL_BAD_CHUNK = new Relationship.Builder() + .name("bad chunk") + .description("Any bad chunks of records will be transferred to this relationship in their original binary form") + .build(); + + @VisibleForTesting + static final Relationship REL_ORIGINAL = new Relationship.Builder() + .name("original") + .description("The unmodified input FlowFile will be transferred to this relationship") + .build(); + + @VisibleForTesting + static final Set<Relationship> RELATIONSHIPS = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(REL_SUCCESS, REL_FAILURE, REL_ORIGINAL, REL_BAD_CHUNK))); + + @VisibleForTesting + static final PropertyDescriptor GRANULARITY = new PropertyDescriptor.Builder().required(true) + .name("granularity") + .displayName("Granularity") + .description("Output flow file for each Record, Chunk, or File encountered in the event log") + .allowableValues(RECORD, CHUNK, FILE) + .build(); --- End diff -- there is a requried(true) on the end of the first line there, I'll make that more obvious with formatting, probably default to granularity of chunk
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