com.ning.metrics.collector.endpoint.setup.SetupJULBridge Maven / Gradle / Ivy
/*
* Copyright 2010-2011 Ning, Inc.
*
* Ning 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 com.ning.metrics.collector.endpoint.setup;
import org.apache.commons.lang.ArrayUtils;
import org.slf4j.LoggerFactory;
import org.slf4j.bridge.SLF4JBridgeHandler;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import java.util.logging.Handler;
import java.util.logging.LogManager;
import java.util.logging.Logger;
/**
* Takes java.util.logging and redirects it into log4j.
*/
public class SetupJULBridge implements ServletContextListener
{
private static final org.slf4j.Logger log = LoggerFactory.getLogger(SetupJULBridge.class);
@Override
public void contextInitialized(final ServletContextEvent event)
{
// we first remove the default handler(s)
final Logger rootLogger = LogManager.getLogManager().getLogger("");
final Handler[] handlers = rootLogger.getHandlers();
if (!ArrayUtils.isEmpty(handlers)) {
for (final Handler handler : handlers) {
rootLogger.removeHandler(handler);
}
}
// and then we let jul-to-sfl4j do its magic so that jersey messages go to sfl4j (and thus log4j)
SLF4JBridgeHandler.install();
log.info("Assimilated java.util Logging");
}
@Override
public void contextDestroyed(final ServletContextEvent event)
{
SLF4JBridgeHandler.uninstall();
}
}