HttpServer.java 文件源码

/**
 * Add an internal servlet in the server, specifying whether or not to
 * protect with Kerberos authentication. 
 * Note: This method is to be used for adding servlets that facilitate
 * internal communication and not for user facing functionality. For
 +   * servlets added using this method, filters (except internal Kerberos
 * filters) are not enabled. 
 * 
 * @param name The name of the servlet (can be passed as null)
 * @param pathSpec The path spec for the servlet
 * @param clazz The servlet class
 * @param requireAuth Require Kerberos authenticate to access servlet
 */
public void addInternalServlet(String name, String pathSpec, 
    Class<? extends HttpServlet> clazz, boolean requireAuth) {
  ServletHolder holder = new ServletHolder(clazz);
  if (name != null) {
    holder.setName(name);
  }
  webAppContext.addServlet(holder, pathSpec);

  if(requireAuth && UserGroupInformation.isSecurityEnabled()) {
     LOG.info("Adding Kerberos (SPNEGO) filter to " + name);
     ServletHandler handler = webAppContext.getServletHandler();
     FilterMapping fmap = new FilterMapping();
     fmap.setPathSpec(pathSpec);
     fmap.setFilterName(SPNEGO_FILTER);
     fmap.setDispatches(Handler.ALL);
     handler.addFilterMapping(fmap);
  }
}