@Configuration
public class MetricsConfiguration {

    /**
     * Register the metricsController.
     * @return Returns the ServletWrappingController for the Prometheus
     * MetricsServlet.
     */
    @Bean
    public ServletWrappingController metricsController() throws Exception {
        ServletWrappingController controller = new ServletWrappingController();
        controller.setServletClass(MetricsServlet.class);
        controller.setBeanName("metricsController");
        controller.afterPropertiesSet();

        return controller;
    }

    /**
     * Map /metrics to the metricsController.
     * @return Returns the SimpleUrlHandlerMapping.
     */
    @Bean
    public SimpleUrlHandlerMapping metricsControllerMapping() {
        SimpleUrlHandlerMapping mapping = new SimpleUrlHandlerMapping();
        Properties urlProperties = new Properties();
        urlProperties.put("/metrics", "metricsController");
        mapping.setMappings(urlProperties);
        mapping.setOrder(Integer.MAX_VALUE - 2);

        return mapping;
    }

}