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.OutputStream;
022
023import org.apache.hadoop.io.IOUtils;
024import org.apache.hadoop.util.DataChecksum;
025
026/**
027 * Contains the output streams for the data and checksum of a replica.
028 */
029public class ReplicaOutputStreams implements Closeable {
030  private final OutputStream dataOut;
031  private final OutputStream checksumOut;
032  private final DataChecksum checksum;
033
034  /**
035   * Create an object with a data output stream, a checksum output stream
036   * and a checksum.
037   */
038  public ReplicaOutputStreams(OutputStream dataOut, OutputStream checksumOut,
039      DataChecksum checksum) {
040    this.dataOut = dataOut;
041    this.checksumOut = checksumOut;
042    this.checksum = checksum;
043  }
044
045  /** @return the data output stream. */
046  public OutputStream getDataOut() {
047    return dataOut;
048  }
049
050  /** @return the checksum output stream. */
051  public OutputStream getChecksumOut() {
052    return checksumOut;
053  }
054
055  /** @return the checksum. */
056  public DataChecksum getChecksum() {
057    return checksum;
058  }
059
060  @Override
061  public void close() {
062    IOUtils.closeStream(dataOut);
063    IOUtils.closeStream(checksumOut);
064  }
065}