001    /**
002     * Copyright (c) 2000-present 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 com.liferay.portal.kernel.io.unsync.UnsyncByteArrayOutputStream;
018    import com.liferay.portal.kernel.util.StreamUtil;
019    
020    import java.io.IOException;
021    import java.io.InputStream;
022    
023    /**
024     * @author Shuyang Zhou
025     */
026    public class CollectorOutputProcessor
027            implements OutputProcessor<byte[], byte[]> {
028    
029            @Override
030            public byte[] processStdErr(InputStream stdErrInputStream)
031                    throws ProcessException {
032    
033                    return _collect(stdErrInputStream);
034            }
035    
036            @Override
037            public byte[] processStdOut(InputStream stdOutInputStream)
038                    throws ProcessException {
039    
040                    return _collect(stdOutInputStream);
041            }
042    
043            private byte[] _collect(InputStream inputStream) throws ProcessException {
044                    UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
045                            new UnsyncByteArrayOutputStream();
046    
047                    try {
048                            StreamUtil.transfer(inputStream, unsyncByteArrayOutputStream);
049                    }
050                    catch (IOException ioe) {
051                            throw new ProcessException(ioe);
052                    }
053    
054                    return unsyncByteArrayOutputStream.toByteArray();
055            }
056    
057    }