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.tools.offlineEditsViewer;
019
020import java.io.IOException;
021import java.io.OutputStream;
022
023/**
024 * A TeeOutputStream writes its output to multiple output streams.
025 */
026public class TeeOutputStream extends OutputStream {
027  private final OutputStream[] outs;
028
029  public TeeOutputStream(OutputStream outs[]) {
030    this.outs = outs;
031  }
032
033  @Override
034  public void write(int c) throws IOException {
035    for (OutputStream o : outs) {
036     o.write(c);
037    }
038  }
039
040  @Override
041  public void write(byte[] b) throws IOException {
042    for (OutputStream o : outs) {
043     o.write(b);
044    }
045  }
046
047  @Override
048  public void write(byte[] b, int off, int len) throws IOException {
049    for (OutputStream o : outs) {
050     o.write(b, off, len);
051    }
052  }
053
054  @Override
055  public void close() throws IOException {
056    for (OutputStream o : outs) {
057     o.close();
058    }
059  }
060
061  @Override
062  public void flush() throws IOException {
063    for (OutputStream o : outs) {
064     o.flush();
065    }
066  }
067}