public void handleError()

in src/main/java/org/apache/sling/servlets/resolver/internal/SlingServletResolver.java [274:336]
44 lines of code
5 McCabe index (conditional complexity)

    public void handleError(
            final int status,
            final String message,
            final SlingJakartaHttpServletRequest request,
            final SlingJakartaHttpServletResponse response)
            throws IOException {

        // do not handle, if already handling ....
        if (request.getAttribute(RequestDispatcher.ERROR_REQUEST_URI) != null) {
            LOGGER.error("handleError: Recursive invocation. Not further handling status {}({})", status, message);
            return;
        }

        // start tracker
        RequestProgressTracker progressTracker = request.getRequestProgressTracker();
        String timerName = "handleError:status=" + status;
        progressTracker.startTimer(timerName);

        final ResourceResolver scriptResolver = this.getScriptResourceResolver();
        try {
            // find the error handler component
            Resource resource = getErrorResource(request);

            // find a servlet for the status as the method name
            String extension = request.getRequestPathInfo().getExtension();
            ResourceCollector locationUtil = new ResourceCollector(
                    String.valueOf(status),
                    DEFAULT_ERROR_HANDLER_RESOURCE_TYPE,
                    resource,
                    extension,
                    this.executionPaths.get(),
                    this.useResourceCaching);
            Servlet servlet = getServletInternal(locationUtil, request, scriptResolver);

            // fall back to default servlet if none
            if (servlet == null) {
                servlet = getDefaultErrorServlet(request, resource, scriptResolver);
            }

            // set the message properties
            request.setAttribute(RequestDispatcher.ERROR_STATUS_CODE, status);
            request.setAttribute(RequestDispatcher.ERROR_MESSAGE, message);
            request.setAttribute(RequestDispatcher.ERROR_METHOD, request.getMethod());
            if (request.getQueryString() != null) {
                request.setAttribute(RequestDispatcher.ERROR_QUERY_STRING, request.getQueryString());
            }

            // the servlet name for a sendError handling is still stored
            // as the request attribute
            Object servletName = request.getAttribute(SLING_CURRENT_SERVLET_NAME);
            if (servletName instanceof String) {
                request.setAttribute(RequestDispatcher.ERROR_SERVLET_NAME, servletName);
            }

            // log a track entry after resolution before calling the handler
            progressTracker.logTimer(timerName, "Using handler {0}", RequestUtil.getServletName(servlet));

            handleError(servlet, request, response);

        } finally {
            progressTracker.logTimer(timerName, "Error handler finished");
        }
    }