Package org.jboss.errai.bus.server.api

Examples of org.jboss.errai.bus.server.api.QueueSession

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   * @throws IOException      - thrown if there is a read/write error
   * @throws ServletException - thrown if a servlet error occurs
   */
  public void event(final HttpEvent event) throws IOException, ServletException {
    final HttpServletRequest request = event.getHttpServletRequest();
    final QueueSession session = sessionProvider.getSession(request.getSession(), request.getHeader("RemoteQueueID"));

    MessageQueue queue;
    switch (event.getType()) {
      case BEGIN:
        boolean post = "POST".equals(request.getMethod());
        queue = getQueue(session, !post);
        if (queue == null) {
          switch (getConnectionPhase(request)) {
            case CONNECTING:
            case DISCONNECTING:
              return;
          }

          sendDisconnectWithReason(event.getHttpServletResponse().getOutputStream(),
              "There is no queue associated with this session.");
        }

        synchronized (activeEvents) {

          if (post) {
            // do not pause incoming messages.
            break;
          }
          else if (queue.messagesWaiting()) {
            transmitMessages(event.getHttpServletResponse(), queue);
            event.close();
            break;
          }

          if (!queueToSession.containsKey(queue)) {
            queueToSession.put(queue, session);
          }


          Set<HttpEvent> events = activeEvents.get(session);
          if (events == null) {
            activeEvents.put(session, events = new LinkedHashSet<HttpEvent>());
          }

          if (events.contains(event)) {
            event.close();
          }
          else {
            events.add(event);
          }
        }
        break;


      case END:
        if ((queue = getQueue(session, false)) != null) {
          queue.heartBeat();
        }

        synchronized (activeEvents) {
          Set<HttpEvent> evt = activeEvents.get(session);
          if (evt != null) {
            evt.remove(event);
          }
        }

        event.close();
        break;

      case EOF:
        event.close();
        break;

      case TIMEOUT:
      case ERROR:
        queue = getQueue(session, false);

        synchronized (activeEvents) {
          Set<HttpEvent> evt = activeEvents.get(session);
          if (evt != null) {
            evt.remove(event);
          }
        }

        if (event.getType() == HttpEvent.EventType.TIMEOUT) {
          if (queue != null) queue.heartBeat();
        }
        else {
          if (queue != null) {
            queueToSession.remove(queue);
            service.getBus().closeQueue(session.getSessionId());
            //   session.invalidate();
            activeEvents.remove(session);
          }
          log.error("An Error Occured" + event.getType());
        }
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          queue.setActivationCallback(null);

          //     log.info("Attempt to resume queue: " + queue.hashCode());
          try {
            Set<HttpEvent> activeSessEvents;
            QueueSession session;
            session = queueToSession.get(queue);
            if (session == null) {
              log.error("Could not resume: No session.");
              return;
            }
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   */
  @Override
  protected void doPost(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse)
          throws ServletException, IOException {

    final QueueSession session = sessionProvider.getSession(httpServletRequest.getSession(),
            httpServletRequest.getHeader(ClientMessageBus.REMOTE_QUEUE_ID_HEADER));

    try {
      service.store(createCommandMessage(session, httpServletRequest.getInputStream()));
    }
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  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {

    final QueueSession session = sessionProvider.getSession(request.getSession(),
        request.getHeader(ClientMessageBus.REMOTE_QUEUE_ID_HEADER));

    BufferedReader reader = request.getReader();
    StringAppender sb = new StringAppender(request.getContentLength());
    CharBuffer buffer = CharBuffer.allocate(10);
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   */
  @Override
  protected void doPost(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse)
      throws ServletException, IOException {

    final QueueSession session = sessionProvider.getSession(httpServletRequest.getSession(),
        httpServletRequest.getHeader(ClientMessageBus.REMOTE_QUEUE_ID_HEADER));

    BufferedReader reader = httpServletRequest.getReader();
    StringAppender sb = new StringAppender(httpServletRequest.getContentLength());
    CharBuffer buffer = CharBuffer.allocate(10);
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   * @throws IOException      - thrown if there is a read/write error
   * @throws ServletException - thrown if a servlet error occurs
   */
  public void event(final CometEvent event) throws IOException, ServletException {
    final HttpServletRequest request = event.getHttpServletRequest();
    final QueueSession session = sessionProvider.getSession(request.getSession(), request.getHeader(ClientMessageBus.REMOTE_QUEUE_ID_HEADER));

    MessageQueue queue;
    switch (event.getEventType()) {
      case BEGIN:
        boolean post = "POST".equals(request.getMethod());
        if ((queue = getQueue(session, !post)) != null) {
          synchronized (activeEvents) {
            Set<CometEvent> events = activeEvents.get(session);


            if (post) {
              // do not pause incoming messages.
              break;
            }
            else if (queue.messagesWaiting()) {
              transmitMessages(event.getHttpServletResponse(), queue);
              event.close();
              break;
            }

            if (!queueToSession.containsKey(queue)) {
              queueToSession.put(queue, session);
            }

            if (events == null) {
              activeEvents.put(session, events = new HashSet<CometEvent>());
            }
            if (events.contains(event)) {
              break;
            }
            else {
              event.setTimeout(30000);
              events.add(event);
            }
          }
        }
        else {
          switch (getConnectionPhase(request)) {
            case CONNECTING:
            case DISCONNECTING:
              return;
          }

          sendDisconnectWithReason(event.getHttpServletResponse().getOutputStream(),
              "There is no queue associated with this session.");
        }
        break;

      case END:
        event.close();
        synchronized (activeEvents) {
          Set<CometEvent> evt = activeEvents.get(session);
          if (evt != null && !evt.remove(event)) {
            return;
          }
        }

        if ((queue = getQueue(session, false)) != null) {
          queue.heartBeat();
        }
        else {
          return;
        }


        break;

      case ERROR:
        log.error("An Error Occured: " + (event != null ? event.getEventSubType() : "<null>"));

        queue = getQueue(session, false);
        if (queue == null) {
          return;
        }

        synchronized (activeEvents) {
          Set<CometEvent> evt = activeEvents.get(session);
          if (evt != null && !evt.remove(event)) {
            return;
          }
        }

        if (event.getEventSubType() == CometEvent.EventSubType.TIMEOUT) {
          if (queue != null) queue.heartBeat();
        }
        else {
          if (queue != null) {
            queueToSession.remove(queue);
            service.getBus().closeQueue(session.getSessionId());
            activeEvents.remove(session);
          }

        }

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          resumed = true;
          queue.setActivationCallback(null);

          try {
            Set<CometEvent> activeSessEvents;
            QueueSession session;
            session = queueToSession.get(queue);
            if (session == null) {
              log.error("Could not resume: No session.");
              queue.stopQueue();
              return;
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  @Override
  protected void doPost(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse)
      throws ServletException, IOException {


    final QueueSession session = sessionProvider.getSession(httpServletRequest.getSession(),
        httpServletRequest.getHeader(ClientMessageBus.REMOTE_QUEUE_ID_HEADER));

    service.store(createCommandMessage(session, httpServletRequest.getInputStream()));

    pollForMessages(session, httpServletRequest, httpServletResponse, false);
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    subscribe(BuiltInServices.ServerBus.name(), new MessageCallback() {
      @Override
      @SuppressWarnings({"unchecked", "SynchronizationOnLocalVariableOrMethodParameter"})
      public void callback(Message message) {
        try {
          QueueSession session = getSession(message);
          MessageQueueImpl queue = (MessageQueueImpl) messageQueues.get(session);

          switch (BusCommands.valueOf(message.getCommandType())) {
            case Heartbeat:
              if (queue != null) {
                queue.heartBeat();
              }
              break;

            case RemoteSubscribe:
              if (queue == null) return;

              if (message.hasPart(MessageParts.SubjectsList)) {
                for (String subject : (List<String>) message.get(List.class, MessageParts.SubjectsList)) {
                  remoteSubscribe(session, queue, subject);
                }
              }
              else {
                remoteSubscribe(session, messageQueues.get(session),
                        message.get(String.class, MessageParts.Subject));
              }

              break;

            case RemoteUnsubscribe:
              if (queue == null) return;

              remoteUnsubscribe(session, queue,
                      message.get(String.class, MessageParts.Subject));
              break;

            case FinishStateSync:
              if (queue == null) return;
              queue.finishInit();

              drainDeferredDeliveryQueue(queue);
              break;

            case Disconnect:
              if (queue == null) return;

              synchronized (messageQueues) {
                queue = (MessageQueueImpl) messageQueues.get(session);
                queue.stopQueue();
                closeQueue(queue);
              }

              break;
            case Resend:
              if (queue == null) return;

            case ConnectToQueue: {
              List<Message> deferred = null;
              synchronized (messageQueues) {
                if (messageQueues.containsKey(session)) {
                  MessageQueue q = messageQueues.get(session);
                  synchronized (q) {
                    if (deferredQueue.containsKey(q)) {
                      deferred = deferredQueue.remove(q);
                    }
                  }

                  messageQueues.get(session).stopQueue();
                }

                addQueue(session, queue = new MessageQueueImpl(transmissionbuffer, session));

                if (deferred != null) {
                  deferredQueue.put(queue, deferred);
                }

                remoteSubscribe(session, queue, BuiltInServices.ClientBus.name());
              }

              if (isMonitor()) {
                busMonitor.notifyQueueAttached(session.getSessionId(), queue);
              }

              List<String> subjects = new LinkedList<String>();
              for (String service : subscriptions.keySet()) {
                if (service.startsWith("local:")) {
                }
                else if (!remoteSubscriptions.containsKey(service)) {
                  subjects.add(service);
                }
              }

              createConversation(message)
                      .toSubject(BuiltInServices.ClientBus.name())
                      .command(BusCommands.RemoteSubscribe)
                      .with(MessageParts.SubjectsList, subjects)
                      .with(MessageParts.PriorityProcessing, "1")
                      .noErrorHandling().sendNowWith(ServerMessageBusImpl.this, false);

              CommandMessage msg = ConversationMessage.create(message);
              msg.toSubject(BuiltInServices.ClientBus.name())
                      .command(BusCommands.CapabilitiesNotice);

              StringBuilder capabilitiesBuffer = new StringBuilder();

              boolean first;
              if (ErraiServiceConfigurator.LONG_POLLING) {
                capabilitiesBuffer.append(Capabilities.LongPollAvailable.name());
                first = false;
              }
              else {
                capabilitiesBuffer.append(Capabilities.NoLongPollAvailable.name());
                first = false;
                msg.set(MessageParts.PollFrequency, ErraiServiceConfigurator.HOSTED_MODE_TESTING ? 50 : 250);
              }

              if (webSocketServer) {
                if (!first) {
                  capabilitiesBuffer.append(',');
                }
                capabilitiesBuffer.append(Capabilities.WebSockets.name());
                /**
                 * Advertise where the client can find a websocket.
                 */
                HttpServletRequest request = message.getResource(HttpServletRequest.class, HttpServletRequest.class.getName());
                msg.set(MessageParts.WebSocketURL, "ws://" + request.getLocalAddr()
                        + ":" + webSocketPort + webSocketPath);

                String connectionToken = SecureHashUtil.nextSecureHash("SHA-256", session.getSessionId());
                session.setAttribute(MessageParts.WebSocketToken.name(), connectionToken);
                msg.set(MessageParts.WebSocketToken, connectionToken);
              }

              msg.set(MessageParts.CapabilitiesFlags, capabilitiesBuffer.toString());

              send(msg, false);

              createConversation(message)
                      .toSubject(BuiltInServices.ClientBus.name())
                      .command(BusCommands.FinishStateSync)
                      .with(MessageParts.ConnectionSessionKey, queue.getSession().getSessionId())
                      .noErrorHandling().sendNowWith(ServerMessageBusImpl.this, false);

              break;
            }

            case WebsocketChannelVerify:
              if (session.hasAttribute(MessageParts.WebSocketToken.name())
                      && message.hasPart(MessageParts.WebSocketToken)) {

                if (message.get(String.class, MessageParts.WebSocketToken)
                        .equals(session.getAttribute(String.class, MessageParts.WebSocketToken.name()))) {

                  session.setAttribute(WebSocketServerHandler.SESSION_ATTR_WS_STATUS,
                          WebSocketServerHandler.WEBSOCKET_ACTIVE);

                  createConversation(message)
                          .toSubject(BuiltInServices.ClientBus.name())
                          .command(BusCommands.WebsocketChannelOpen)
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              .getName()));
    }

    @SuppressWarnings("unchecked") EJObject val = JSONDecoder.decode(((TextWebSocketFrame) frame).getText()).isObject();

    QueueSession session;

    // this is not an active channel.
    if (!activeChannels.containsKey(ctx.getChannel())) {
      String commandType =  val.get(MessageParts.CommandType.name()).isString().stringValue();

      // this client apparently wants to connect.
      if (BusCommands.ConnectToQueue.name().equals(commandType)) {
        String sessionKey = val.get(MessageParts.ConnectionSessionKey.name()).isString().stringValue();

        // has this client already attempted a connection, and is in a wait verify state
        if (sessionKey != null && (session = svc.getBus().getSessionBySessionId(sessionKey)) != null) {
          if (session.hasAttribute(SESSION_ATTR_WS_STATUS) &&
                  WEBSOCKET_ACTIVE.equals(session.getAttribute(String.class, SESSION_ATTR_WS_STATUS))) {

            // open the channel
            activeChannels.put(ctx.getChannel(), session);

            // set the session queue into direct channel mode.
            svc.getBus().getQueueBySession(sessionKey).setDirectSocketChannel(ctx.getChannel());

            // remove the web socket token so it cannot be re-used for authentication.
            session.removeAttribute(MessageParts.WebSocketToken.name());
            session.removeAttribute(SESSION_ATTR_WS_STATUS);

            return;
          }

          // check the activation key matches what we have in the ssession.
          String activationKey = session.getAttribute(String.class, MessageParts.WebSocketToken.name());
          if (activationKey == null || !activationKey.equals(val.get(MessageParts.WebSocketToken.name()).isString().stringValue())) {
            // nope. go away!
            sendMessage(ctx, getFailedNegotiation("bad negotiation key"));
          }
          else {
            // the key matches. now we send the reverse challenge to prove this client is actually
            // already talking to the bus over the COMET channel.
            String reverseToken = SecureHashUtil.nextSecureHash("SHA-256");
            session.setAttribute(MessageParts.WebSocketToken.name(), reverseToken);
            session.setAttribute(SESSION_ATTR_WS_STATUS, WEBSOCKET_AWAIT_ACTIVATION);

            // send the challenge.
            sendMessage(ctx, getReverseChallenge(reverseToken));
            return;
          }
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Related Classes of org.jboss.errai.bus.server.api.QueueSession

  • org.jboss.errai.bus.server.HttpSessionProvider
  • org.jboss.errai.bus.server.HttpSessionProvider$SessionsContainer
  • org.jboss.errai.bus.server.io.websockets.WebSocketServerHandler
  • org.jboss.errai.bus.server.security.auth.JAASAdapter
  • org.jboss.errai.bus.server.ServerMessageBusImpl
  • org.jboss.errai.bus.server.servlet.DefaultBlockingServlet
  • org.jboss.errai.bus.server.servlet.GrizzlyCometServlet
  • org.jboss.errai.bus.server.servlet.JBossCometServlet
  • org.jboss.errai.bus.server.servlet.JettyContinuationsServlet
  • org.jboss.errai.bus.server.servlet.StandardAsyncServlet
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