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     */
018    package org.apache.hadoop.hdfs.tools.offlineEditsViewer;
019    
020    import java.io.IOException;
021    import java.io.OutputStream;
022    
023    /**
024     * A TeeOutputStream writes its output to multiple output streams.
025     */
026    public 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    }