/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.classic.selector.servlet;
  
  import static ch.qos.logback.classic.ClassicConstants.JNDI_CONTEXT_NAME;
  
  import javax.naming.Context;
  import javax.naming.NamingException;
  import javax.servlet.ServletContextEvent;
  import javax.servlet.ServletContextListener;
  
  import org.slf4j.Logger;
  
  import ch.qos.logback.classic.LoggerContext;
  import ch.qos.logback.classic.selector.ContextSelector;
  import ch.qos.logback.classic.util.ContextSelectorStaticBinder;
  import ch.qos.logback.classic.util.JNDIUtil;
  
  public class ContextDetachingSCL implements ServletContextListener {
  
    public void contextDestroyed(ServletContextEvent servletContextEvent) {
      String loggerContextName = null;
      
      try {
        Context ctx = JNDIUtil.getInitialContext();
        loggerContextName = (String) JNDIUtil.lookup(ctx, JNDI_CONTEXT_NAME);
      } catch (NamingException ne) {
      }
      
      if (loggerContextName != null) {
        System.out.println("About to detach context named " + loggerContextName);
        
        ContextSelector selector = ContextSelectorStaticBinder.getSingleton().getContextSelector();
        LoggerContext context = selector.detachLoggerContext(loggerContextName);
        if (context != null) {
          Logger logger = context.getLogger(Logger.ROOT_LOGGER_NAME);
          logger.warn("Stopping logger context " + loggerContextName);
          // when the web-app is destroyed, its logger context should be stopped
          context.stop();
        } else {
          System.out.println("No context named " + loggerContextName + " was found.");
        }
      }
    }
  
    public void contextInitialized(ServletContextEvent arg0) {
      // do nothing
    }
  
  }