protected void cleanup()

in web/src/main/java/org/apache/shiro/web/servlet/AdviceFilter.java [170:201]
32 lines of code
8 McCabe index (conditional complexity)

    protected void cleanup(ServletRequest request, ServletResponse response, Exception existing)
            throws ServletException, IOException {
        Exception exception = existing;
        try {
            afterCompletion(request, response, exception);
            if (LOGGER.isTraceEnabled()) {
                LOGGER.trace("Successfully invoked afterCompletion method.");
            }
        } catch (Exception e) {
            if (exception == null) {
                exception = e;
            } else {
                LOGGER.debug("afterCompletion implementation threw an exception.  This will be ignored to "
                        + "allow the original source exception to be propagated.", e);
            }
        }
        if (exception != null) {
            if (exception instanceof ServletException) {
                throw (ServletException) exception;
            } else if (exception instanceof IOException) {
                throw (IOException) exception;
            } else {
                if (LOGGER.isDebugEnabled()) {
                    String msg = "Filter execution resulted in an unexpected Exception "
                            + "(not IOException or ServletException as the Filter API recommends).  "
                            + "Wrapping in ServletException and propagating.";
                    LOGGER.debug(msg);
                }
                throw new ServletException(exception);
            }
        }
    }