/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.infinispan.util.logging.log4j;
import org.apache.log4j.FileAppender;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.zip.GZIPOutputStream;
/**
* Appender that writes to a file and compresses the output using gzip.
*
* Based on <code>org.apache.log4j.FileAppender</code>
*/
public class CompressedFileAppender extends FileAppender {
GZIPOutputStream gzos;
@Override
protected OutputStreamWriter createWriter(OutputStream os) {
try {
gzos = new GZIPOutputStream(os, bufferSize);
gzos.flush();
return super.createWriter(gzos);
} catch (IOException e) {
throw new RuntimeException("Unable to create gzipped output stream");
}
}
@Override
protected void reset() {
if (gzos != null) {
closeCompressor();
gzos = null;
}
super.reset();
}
private void closeCompressor() {
try {
gzos.close();
} catch (IOException e) {
throw new RuntimeException("Unable to finish gzipped output stream");
}
}
}