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;
019
020import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
021
022import java.io.Closeable;
023import java.io.IOException;
024
025/**
026 * This class includes a replica being actively written and the reference to
027 * the fs volume where this replica is located.
028 */
029public class ReplicaHandler implements Closeable {
030  private final ReplicaInPipelineInterface replica;
031  private final FsVolumeReference volumeReference;
032
033  public ReplicaHandler(
034      ReplicaInPipelineInterface replica, FsVolumeReference reference) {
035    this.replica = replica;
036    this.volumeReference = reference;
037  }
038
039  @Override
040  public void close() throws IOException {
041    if (this.volumeReference != null) {
042      volumeReference.close();
043    }
044  }
045
046  public ReplicaInPipelineInterface getReplica() {
047    return replica;
048  }
049}