/*
* Eoulsan development code
*
* This code may be freely distributed and modified under the
* terms of the GNU Lesser General Public License version 2.1 or
* later and CeCILL-C. This should be distributed with the code.
* If you do not have a copy, see:
*
* http://www.gnu.org/licenses/lgpl-2.1.txt
* http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.txt
*
* Copyright for this code is held jointly by the Genomic platform
* of the Institut de Biologie de l'École normale supérieure and
* the individual authors. These should be listed in @author doc
* comments.
*
* For more information on the Eoulsan project and its aims,
* or to join the Eoulsan Google group, visit the home page
* at:
*
* http://outils.genomique.biologie.ens.fr/eoulsan
*
*/
package fr.ens.biologie.genomique.eoulsan;
import java.io.IOException;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.RollingFileAppender;
/**
* This class allow to configure non Eoulsan log using Log4J.
* @author Laurent Jourdren
* @since 2.0
*/
public class OtherLogConfigurator {
/** Default Hadoop log level. */
private static final Level DEFAULT_LOG_LEVEL = Level.INFO;
//
// Hadoop log configuration
//
/**
* Configure Log4J. If no log level is provided, the INFO log level will be
* used.
* @param logLevel logLevel as string.
* @param logFilename the log filename
*/
public static void configureLog4J(final String logLevel,
final String logFilename) {
if (logFilename == null) {
throw new NullPointerException("The logFilename argument cannot be null");
}
// This is the root logger provided by log4j
Logger rootLogger = Logger.getRootLogger();
rootLogger.setLevel(Level.toLevel(logLevel, DEFAULT_LOG_LEVEL));
// Remove all appenders
rootLogger.removeAllAppenders();
// Define log pattern layout
final PatternLayout layout =
new PatternLayout("%p\t%d{yyyy.MM.dd HH:mm:ss}\t%m\n");
try {
// Define file appender with layout and output log file name
final RollingFileAppender fileAppender =
new RollingFileAppender(layout, logFilename);
// Add the appender to root logger
rootLogger.addAppender(fileAppender);
} catch (IOException e) {
EoulsanLogger.getLogger().warning("Failed to add appender !!");
}
}
}