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}