001/*
002 * Copyright (c) 2007-2022 The Cascading Authors. All Rights Reserved.
003 *
004 * Project and contact information: https://cascading.wensel.net/
005 *
006 * This file is part of the Cascading project.
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *     http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020
021package cascading.local.tap.kafka.decorator;
022
023import java.util.Collection;
024
025import org.apache.kafka.clients.consumer.ConsumerRebalanceListener;
026import org.apache.kafka.clients.consumer.internals.NoOpConsumerRebalanceListener;
027import org.apache.kafka.common.TopicPartition;
028
029/**
030 *
031 */
032public class ForwardingConsumerRebalanceListener implements ConsumerRebalanceListener
033  {
034  ConsumerRebalanceListener listener = new NoOpConsumerRebalanceListener();
035
036  public ForwardingConsumerRebalanceListener()
037    {
038    }
039
040  public ForwardingConsumerRebalanceListener( ConsumerRebalanceListener listener )
041    {
042    if( listener != null )
043      this.listener = listener;
044    }
045
046  @Override
047  public void onPartitionsRevoked( Collection<TopicPartition> collection )
048    {
049    listener.onPartitionsRevoked( collection );
050    }
051
052  @Override
053  public void onPartitionsAssigned( Collection<TopicPartition> collection )
054    {
055    listener.onPartitionsAssigned( collection );
056    }
057  }