package com.epam.wilma.test.server.compress.gzip;
/*==========================================================================
Copyright 2013-2017 EPAM Systems
This file is part of Wilma.
Wilma is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Wilma is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Wilma. If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.GZIPInputStream;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Decompresses requests that are encoded with gzip.
* @author Tamas_Bihari
*
*/
public class GzipDecompressor {
private final Logger logger = LoggerFactory.getLogger(GzipDecompressor.class);
/**
* Decompresses an input stream from gzip.
* @param body the inputstream that is decompressed.
* @return the decompressed {@link ByteArrayOutputStream}
*/
public ByteArrayOutputStream decompress(final InputStream body) {
ByteArrayOutputStream writer = new ByteArrayOutputStream();
try {
GZIPInputStream gzipStream = new GZIPInputStream(body);
IOUtils.copy(gzipStream, writer);
} catch (IOException e) {
logger.error("Error when decompress inputStream, exception message:" + e.getMessage());
}
return writer;
}
}