And why don't we try this one last time with the changes to doIdempotentInitialization() that I recommended in my original email. Sorry, must have been too tired last night....
Jake
/* * Copyright (C) The Apache Software Foundation. All rights reserved. * * This software is published under the terms of the Apache Software * License version 1.1, a copy of which has been included with this * distribution in the LICENSE.txt file. */
package org.apache.log4j.selectors;
import org.apache.log4j.spi.RepositorySelector;
import org.apache.log4j.spi.LoggerRepository;
import org.apache.log4j.spi.RootCategory;
import org.apache.log4j.Hierarchy;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
/**
* @author Jacob Kjome
*/
public class ContextClassLoaderSelector implements RepositorySelector {
// key: current thread's ContextClassLoader,
// value: Hierarchy instance
final private static Map hierMap = Collections.synchronizedMap(new WeakHashMap());
final private static ContextClassLoaderSelector singleton = new
ContextClassLoaderSelector();
private static boolean initialized = false;
private ContextClassLoaderSelector() {}
public LoggerRepository getLoggerRepository() {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
Hierarchy hierarchy = (Hierarchy) hierMap.get(cl);
if(hierarchy == null) {
hierarchy = new Hierarchy(new RootCategory((Level) Level.DEBUG));
hierMap.put(cl, hierarchy);
}
return hierarchy;
}
/**
* The Container should initialize the logger repository for each
* webapp upon startup or reload. In this case, it is controllable
* via each webapp.
*/
public static void doIdempotentInitialization() {
if(!initialized) {
try {
Object guard = new Object();
LogManager.setRepositorySelector(singleton, guard);
initialized = true;
} catch (IllegalArgumentException iae) {
//either ignore the exception or log the fact that the setting of this
//custom repository selector failed because another had been set previously
// and maybe we should set "initialized" to "true" in here so this exception
doesn't
// occur again in this class
}
}
}
}
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