001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.process;
016    
017    import java.io.IOException;
018    import java.io.InputStream;
019    
020    /**
021     * @author Shuyang Zhou
022     */
023    public class ConsumerOutputProcessor implements OutputProcessor<Void, Void> {
024    
025            public Void processStdErr(InputStream stdErrInputStream)
026                    throws ProcessException {
027    
028                    _consume(stdErrInputStream);
029    
030                    return null;
031            }
032    
033            public Void processStdOut(InputStream stdOutInputStream)
034                    throws ProcessException {
035    
036                    _consume(stdOutInputStream);
037    
038                    return null;
039            }
040    
041            private void _consume(InputStream inputStream) throws ProcessException {
042                    byte[] buffer = new byte[1024];
043    
044                    try {
045                            while (inputStream.read(buffer) != -1);
046                    }
047                    catch (IOException ioe) {
048                            throw new ProcessException(ioe);
049                    }
050                    finally {
051                            try {
052                                    inputStream.close();
053                            }
054                            catch (IOException ioe) {
055                                    throw new ProcessException(ioe);
056                            }
057                    }
058            }
059    
060    }