示例#1
0
 public static void invokeRequest(Valve pipelineHead, Request request)
     throws ServletException, IOException {
   pipelineHead.invoke(request, request.getResponse());
   // StandardHostValve calls request.getSession(false) on way out, so we will too
   request.getSession(false);
   request.recycle();
 }
  private void doInvoke(Request request, Response response, boolean chaining)
      throws IOException, ServletException {

    if ((valves.length > 0) || (basic != null)) {
      // Set the status so that if there are no valves (other than the
      // basic one), the basic valve's request processing logic will
      // be invoked
      int status = GlassFishValve.INVOKE_NEXT;

      // Iterate over all the valves in the pipeline and invoke
      // each valve's processing logic and then move onto to the
      // next valve in the pipeline only if the previous valve indicated
      // that the pipeline should proceed.
      int i;
      for (i = 0; i < valves.length; i++) {
        Request req = request;
        Response resp = response;
        if (chaining) {
          req = getRequest(request);
          resp = getResponse(request, response);
        }
        status = valves[i].invoke(req, resp);
        if (status != GlassFishValve.INVOKE_NEXT) break;
      }

      // Save a reference to the valve[], to ensure that postInvoke()
      // is invoked on the original valve[], in case a valve gets added
      // or removed during the invocation of the basic valve (e.g.,
      // in case access logging is enabled or disabled by some kind of
      // admin servlet), in which case the indices used for postInvoke
      // invocations below would be off
      GlassFishValve[] savedValves = valves;

      // Invoke the basic valve's request processing and post-request
      // logic only if the pipeline was not aborted (i.e. no valve
      // returned END_PIPELINE).
      // In addition, the basic valve needs to be invoked by the
      // pipeline only if no Tomcat-style valves have been added.
      // Otherwise, it will be invoked by the last Tomcat-style valve
      // directly.
      if (status == GlassFishValve.INVOKE_NEXT) {
        if (firstTcValve != null) {
          firstTcValve.invoke(
              (org.apache.catalina.connector.Request) request,
              (org.apache.catalina.connector.Response) response);
        } else if (basic != null) {
          Request req = request;
          Response resp = response;
          if (chaining) {
            req = getRequest(request);
            resp = getResponse(request, response);
          }
          basic.invoke(req, resp);
          basic.postInvoke(req, resp);
        }
      }

      // Invoke the post-request processing logic only on those valves
      // that returned a status of INVOKE_NEXT
      for (int j = i - 1; j >= 0; j--) {
        Request req = request;
        Response resp = response;
        if (chaining) {
          req = getRequest(request);
          resp = getResponse(request, response);
        }

        savedValves[j].postInvoke(req, resp);
      }

      savedValves = null;

    } else {
      throw new ServletException(rb.getString(NO_VALVES_IN_PIPELINE_EXCEPTION));
    }

    // Calls the protocol handler's init method if the request is marked to be upgraded
    if (request instanceof org.apache.catalina.connector.Request) {
      org.apache.catalina.connector.Request req = (org.apache.catalina.connector.Request) request;
      if (req.isUpgrade()) {
        HttpUpgradeHandler handler = req.getHttpUpgradeHandler();
        if (handler != null) {
          WebConnectionImpl wc =
              new WebConnectionImpl(
                  req.getInputStream(),
                  ((org.apache.catalina.connector.Response) req.getResponse()).getOutputStream());
          wc.setRequest(req);
          req.setWebConnection(wc);
          if (response instanceof org.apache.catalina.connector.Response) {
            wc.setResponse((org.apache.catalina.connector.Response) response);
          }
          Context context = req.getContext();
          try {
            context.fireContainerEvent(ContainerEvent.BEFORE_UPGRADE_HANDLER_INITIALIZED, handler);
            handler.init(wc);
          } finally {
            context.fireContainerEvent(ContainerEvent.AFTER_UPGRADE_HANDLER_INITIALIZED, handler);
          }
        } else {
          log.log(Level.SEVERE, PROTOCOL_HANDLER_REQUIRED_EXCEPTION);
        }
        req.setUpgrade(false);
      }
    }
  }