public void contextInitialized()

in log4j-jakarta-web/src/main/java/org/apache/logging/log4j/web/Log4jShutdownOnContextDestroyedListener.java [43:52]


    public void contextInitialized(final ServletContextEvent event) {
        LOGGER.debug(Log4jShutdownOnContextDestroyedListener.class.getSimpleName()
                + " ensuring that Log4j started up properly.");
        servletContext = event.getServletContext();
        if (null == servletContext.getAttribute(Log4jWebSupport.SUPPORT_ATTRIBUTE)) {
            throw new IllegalStateException("Context did not contain required Log4jWebLifeCycle in the "
                    + Log4jWebSupport.SUPPORT_ATTRIBUTE + " attribute.");
        }
        this.initializer = WebLoggerContextUtils.getWebLifeCycle(servletContext);
    }