package ch.qos.logback.classic.servlet;
   
   import jakarta.servlet.ServletContextEvent;
   import jakarta.servlet.ServletContextListener;
   
   import org.slf4j.ILoggerFactory;
   import org.slf4j.LoggerFactory;
   
   import ch.qos.logback.classic.LoggerContext;
  import ch.qos.logback.classic.util.StatusViaSLF4JLoggerFactory;
  import ch.qos.logback.core.spi.ContextAwareBase;
  
  /**
   * Allows for graceful shutdown of the {@link LoggerContext} associated with
   * this web-app.
   * 
   * @author Ceki Gulcu
   * @since 1.1.10
   */
  public class LogbackServletContextListener implements ServletContextListener {
  
      ContextAwareBase contextAwareBase = new ContextAwareBase();
  
      @Override
      public void contextInitialized(ServletContextEvent sce) {
  
      }
  
      @Override
      public void contextDestroyed(ServletContextEvent sce) {
  
          ILoggerFactory iLoggerFactory = LoggerFactory.getILoggerFactory();
          if (iLoggerFactory instanceof LoggerContext) {
              LoggerContext loggerContext = (LoggerContext) iLoggerFactory;
              contextAwareBase.setContext(loggerContext);
              StatusViaSLF4JLoggerFactory.addInfo("About to stop " + loggerContext.getClass().getCanonicalName() + " ["
                      + loggerContext.getName() + "]", this);
              loggerContext.stop();
          }
      }
  
  }