001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hdfs.server.datanode.fsdataset;
019
020import java.io.Closeable;
021import java.io.InputStream;
022
023import org.apache.hadoop.io.IOUtils;
024
025/**
026 * Contains the input streams for the data and checksum of a replica.
027 */
028public class ReplicaInputStreams implements Closeable {
029  private final InputStream dataIn;
030  private final InputStream checksumIn;
031  private final FsVolumeReference volumeRef;
032
033  /** Create an object with a data input stream and a checksum input stream. */
034  public ReplicaInputStreams(InputStream dataStream, InputStream checksumStream,
035      FsVolumeReference volumeRef) {
036    this.volumeRef = volumeRef;
037    this.dataIn = dataStream;
038    this.checksumIn = checksumStream;
039  }
040
041  /** @return the data input stream. */
042  public InputStream getDataIn() {
043    return dataIn;
044  }
045
046  /** @return the checksum input stream. */
047  public InputStream getChecksumIn() {
048    return checksumIn;
049  }
050
051  @Override
052  public void close() {
053    IOUtils.closeStream(dataIn);
054    IOUtils.closeStream(checksumIn);
055    IOUtils.cleanup(null, volumeRef);
056  }
057}