LOGGER.debug( "onStartup() called" );
final ServletRegistration servletRegistration = ctx.getServletRegistration( ROUTEY_SERVLET_NAME );
// if servlet not registered already
if ( servletRegistration == null ) {
final RouteyServlet routeyServlet = ctx.createServlet( RouteyServlet.class );
// force eager initialization to scan routes early
routeyServlet.init();
final Dynamic servlet = ctx.addServlet( ROUTEY_SERVLET_NAME, routeyServlet );
servlet.addMapping( DEFAULT_MAPPING );
}