001/*
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2026, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v2.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014
015package ch.qos.logback.classic.servlet;
016
017import jakarta.servlet.ServletContextEvent;
018import jakarta.servlet.ServletContextListener;
019
020import org.slf4j.ILoggerFactory;
021import org.slf4j.LoggerFactory;
022
023import ch.qos.logback.classic.LoggerContext;
024import ch.qos.logback.classic.util.StatusViaSLF4JLoggerFactory;
025import ch.qos.logback.core.spi.ContextAwareBase;
026
027/**
028 * Allows for graceful shutdown of the {@link LoggerContext} associated with
029 * this web-app.
030 * 
031 * @author Ceki Gulcu
032 * @since 1.1.10
033 */
034public class LogbackServletContextListener implements ServletContextListener {
035
036    ContextAwareBase contextAwareBase = new ContextAwareBase();
037
038    @Override
039    public void contextInitialized(ServletContextEvent sce) {
040
041    }
042
043    @Override
044    public void contextDestroyed(ServletContextEvent sce) {
045
046        ILoggerFactory iLoggerFactory = LoggerFactory.getILoggerFactory();
047        if (iLoggerFactory instanceof LoggerContext) {
048            LoggerContext loggerContext = (LoggerContext) iLoggerFactory;
049            contextAwareBase.setContext(loggerContext);
050            StatusViaSLF4JLoggerFactory.addInfo("About to stop " + loggerContext.getClass().getCanonicalName() + " ["
051                    + loggerContext.getName() + "]", this);
052            loggerContext.stop();
053        }
054    }
055
056}