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.fs.crypto;
019
020import java.io.IOException;
021
022import org.apache.hadoop.crypto.CryptoCodec;
023import org.apache.hadoop.crypto.CryptoOutputStream;
024import org.apache.hadoop.fs.FSDataOutputStream;
025
026public class CryptoFSDataOutputStream extends FSDataOutputStream {
027  private final FSDataOutputStream fsOut;
028  
029  public CryptoFSDataOutputStream(FSDataOutputStream out, CryptoCodec codec,
030      int bufferSize, byte[] key, byte[] iv) throws IOException {
031    super(new CryptoOutputStream(out, codec, bufferSize, key, iv, 
032        out.getPos()), null, out.getPos()); 
033    this.fsOut = out;
034  }
035  
036  public CryptoFSDataOutputStream(FSDataOutputStream out, CryptoCodec codec,
037      byte[] key, byte[] iv) throws IOException {
038    super(new CryptoOutputStream(out, codec, key, iv, out.getPos()), 
039        null, out.getPos()); 
040    this.fsOut = out;
041  }
042  
043  @Override
044  public long getPos() throws IOException {
045    return fsOut.getPos();
046  }
047}