/*******************************************************************************
* Copyright (c) 2013, Equal Experts Ltd
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the Tayra Project.
******************************************************************************/
package com.ee.tayra.io.writer;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.RollingFileAppender;
import java.io.IOException;
public class RotatingFileWriter implements DocumentWriter {
private static final String DEFAULT_FILESIZE = "512MB";
private static final int DEFAULT_FILEMAX = 0;
private String fileSize = DEFAULT_FILESIZE;
private int fileMax = DEFAULT_FILEMAX;
private final PatternLayout layout;
private RollingFileAppender appender;
private Logger logger;
private final String recordToFile;
private WriteNotifier notifier;
public RotatingFileWriter(final String recordToFile) throws IOException {
super();
this.recordToFile = recordToFile;
notifier = WriteNotifier.NONE;
layout = new PatternLayout();
configure();
}
public final void setFileSize(final String fileSize) throws IOException {
this.fileSize = fileSize;
configure();
}
public final void setFileMax(final int fileMax) throws IOException {
this.fileMax = fileMax;
configure();
}
public final void setNotifier(final WriteNotifier notifier) {
this.notifier = notifier;
}
private void configure() throws IOException {
appender = new RollingFileAppender(layout, recordToFile, false);
logger = createLogger();
appender.setMaxFileSize(fileSize);
appender.setMaxBackupIndex(fileMax);
appender.setImmediateFlush(true);
logger.removeAllAppenders();
logger.setAdditivity(false);
logger.setLevel(Level.INFO);
logger.addAppender(appender);
}
Logger createLogger() {
return Logger.getLogger(recordToFile);
}
@Override
public final void close() throws IOException {
appender.close();
}
@Override
public final void writeDocument(final String document) {
notifier.notifyWriteStart(document);
try {
logger.info(document);
notifier.notifyWriteSuccess(document);
} catch (Exception e) {
notifier.notifyWriteFailure(document, e);
}
}
}