/**
 * Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * Licensed 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 com.linkedin.pinot.core.realtime.impl.kafka;

import java.util.concurrent.atomic.AtomicLong;
import kafka.consumer.ConsumerIterator;
import kafka.javaapi.consumer.ConsumerConnector;


/**
 * Immutable tuple object for a Kafka consumer and stream iterator.
 */
public class ConsumerAndIterator {
  private final ConsumerConnector _consumer;
  private final ConsumerIterator<byte[], byte[]> _iterator;
  private final long _id;
  private static final AtomicLong idGenerator = new AtomicLong(0L);

  ConsumerAndIterator(final ConsumerConnector consumer, final ConsumerIterator<byte[], byte[]> iterator) {
    _consumer = consumer;
    _iterator = iterator;
    _id = idGenerator.getAndIncrement();
  }

  public ConsumerConnector getConsumer() {
    return _consumer;
  }

  public ConsumerIterator<byte[], byte[]> getIterator() {
    return _iterator;
  }

  public long getId() {
    return _id;
  }

  @Override
  public String toString() {
    return "ConsumerAndIterator{" +
        "_consumer=" + _consumer +
        ", _iterator=" + _iterator +
        ", _id=" + _id +
        '}';
  }
}