/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.tobago.example.addressbook;
import org.apache.log4j.Appender;
import org.apache.log4j.FileAppender;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggerRepository;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
public class Log4jUtils {
public static Set<Appender> getAllAppenders() {
return getAllAppenders(LogManager.getLoggerRepository());
}
/**
* @return all appenders currently in use
*/
public static Set<Appender> getAllAppenders(LoggerRepository repository) {
Enumeration loggers = repository.getCurrentLoggers();
Set<Appender> allAppenders = getAllAppenders(loggers);
addAppenders(repository.getRootLogger(), allAppenders);
return allAppenders;
}
public static Set<Appender> getAllAppenders(Enumeration loggers) {
Set<Appender> allAppenders = new HashSet<Appender>();
while (loggers.hasMoreElements()) {
Logger logger = (Logger) loggers.nextElement();
addAppenders(logger, allAppenders);
}
return allAppenders;
}
private static void addAppenders(Logger logger, Set<Appender> allAppenders) {
Enumeration appenders = logger.getAllAppenders();
while (appenders.hasMoreElements()) {
Appender appender = (Appender) appenders.nextElement();
allAppenders.add(appender);
}
}
public static FileAppender getFileAppender(String name, LoggerRepository repository) {
Set allAppenders = getAllAppenders(repository);
for (Object allAppender : allAppenders) {
Appender appender = (Appender) allAppender;
if (appender instanceof FileAppender) {
FileAppender fileAppender = (FileAppender) appender;
if (fileAppender.getName() != null
&& fileAppender.getName().equals(name)) {
return fileAppender;
}
}
}
return null;
}
}