MalformedChunkHandler.java

/*
 * 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.net.MediaType;
import org.apache.nifi.flowfile.FlowFile;
import org.apache.nifi.flowfile.attributes.CoreAttributes;
import org.apache.nifi.processor.ProcessSession;
import org.apache.nifi.processor.Relationship;

/**
 * Creates a FlowFile for the malformed chunk and transfers it to the badChunkRelationship
 */
public class MalformedChunkHandler {
    private final Relationship badChunkRelationship;

    public MalformedChunkHandler(Relationship badChunkRelationship) {
        this.badChunkRelationship = badChunkRelationship;
    }

    public void handle(FlowFile original, ProcessSession processSession, String chunkName, byte[] badChunk) {
        FlowFile flowFile = processSession.create(original);
        flowFile = processSession.putAttribute(flowFile, CoreAttributes.FILENAME.key(), chunkName);
        flowFile = processSession.putAttribute(flowFile, CoreAttributes.MIME_TYPE.key(), MediaType.APPLICATION_BINARY.toString());
        flowFile = processSession.write(flowFile, out -> out.write(badChunk));
        processSession.transfer(flowFile, badChunkRelationship);
    }
}