Examples of MessageQueue

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

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

    final MessageQueue queue = service.getBus().getQueue(session);
    if (queue == null) {
      switch (getConnectionPhase(request)) {
      case CONNECTING:
      case DISCONNECTING:
        return;
      }
      sendDisconnectDueToSessionExpiry(response.getOutputStream());
      return;
    }

    response.setContentType("application/json");
    if (queue.messagesWaiting()) {
      queue.poll(false, response.getOutputStream());
      return;
    }
   
    final AsyncContext asyncContext = request.startAsync();
    asyncContext.addListener(new AsyncListener() {
      @Override
      public void onTimeout(AsyncEvent event) throws IOException {
        poll(queue, asyncContext);
        asyncContext.complete();
      }
     
      @Override
      public void onComplete(AsyncEvent event) throws IOException {}
     
      @Override
      public void onError(AsyncEvent event) throws IOException {}
     
      @Override
      public void onStartAsync(AsyncEvent event) throws IOException {}
    });

    queue.setActivationCallback(new QueueActivationCallback() {
      @Override
      public void activate(MessageQueue queue) {
        try {
          poll(queue, asyncContext);
        }
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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   */
  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());
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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    }
  }


  private MessageQueue getQueue(QueueSession session, boolean post) {
    MessageQueue queue = service.getBus().getQueue(session);

    if (post && queue != null && queue.getActivationCallback() == null) {
      queue.setActivationCallback(new QueueActivationCallback() {
        boolean resumed = false;

        public void activate(MessageQueue queue) {
          if (resumed) {
            return;
          }
          resumed = true;
          queue.setActivationCallback(null);

          try {
            Set<HttpEvent> activeSessEvents;
            QueueSession session;
            session = queueToSession.get(queue);
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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  private void pollForMessages(QueueSession session, HttpServletRequest httpServletRequest,
                               HttpServletResponse httpServletResponse, boolean wait) throws IOException {
    final OutputStream stream = httpServletResponse.getOutputStream();

    try {
      final MessageQueue queue = service.getBus().getQueue(session);
      queue.heartBeat();

      if (queue == null) {
        switch (getConnectionPhase(httpServletRequest)) {
          case CONNECTING:
          case DISCONNECTING:
            return;
        }

        sendDisconnectDueToSessionExpiry(httpServletResponse.getOutputStream());

        return;
      }


      if (wait) {
        synchronized (queue.getActivationLock()) {
          final Continuation cont = ContinuationSupport.getContinuation(httpServletRequest, queue);

          if (!cont.isResumed() && !queue.messagesWaiting()) {
            queue.setActivationCallback(new JettyQueueActivationCallback(cont));
            if (cont.suspend(30 * 1000)) {
              return;
            }
          }
        }
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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            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();
                }

                queue = new MessageQueueImpl(transmissionbuffer, session);

                addQueue(session, queue);

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

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

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

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

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

              final StringBuilder capabilitiesBuffer = new StringBuilder(25);

              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 || webSocketServlet) {
                if (!first) {
                  capabilitiesBuffer.append(',');
                }
                capabilitiesBuffer.append(Capabilities.WebSockets.name());
                /**
                 * Advertise where the client can find a websocket.
                 */

                final String webSocketURL;

                HttpServletRequest request = message.getResource(HttpServletRequest.class, HttpServletRequest.class.getName());

                if (webSocketServlet) {
                  webSocketURL = "ws://" + request.getHeader("Host") + webSocketPath;
                }
                else {
                  webSocketURL = "ws://" + request.getLocalName() + ":" + webSocketPort + webSocketPath;
                }
                msg.set(MessageParts.WebSocketURL, webSocketURL);
                msg.set(MessageParts.WebSocketToken, WebSocketTokenManager.getNewOneTimeToken(session));
              }

              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 (message.hasPart(MessageParts.WebSocketToken)) {
                if (verifyOneTimeToken(session, message.get(String.class, MessageParts.WebSocketToken))) {

                  LocalContext localContext = LocalContext.get(session);

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

                  createConversation(message)
                          .toSubject(BuiltInServices.ClientBus.name())
                          .command(BusCommands.WebsocketChannelOpen)
                          .done().sendNowWith(ServerMessageBusImpl.this, false);
                }
              }

              break;
          }

        }
        catch (Throwable t) {
          t.printStackTrace();
        }
      }
    });

    addSubscribeListener(new SubscribeListener() {
      @Override
      public void onSubscribe(SubscriptionEvent event) {
        if (event.isLocalOnly() || event.isRemote() || event.getSubject().startsWith("local:")) return;

        MessageBuilder.createMessage()
                .toSubject(BuiltInServices.ClientBus.name())
                .command(BusCommands.RemoteSubscribe)
                .with(MessageParts.Subject, event.getSubject())
                .noErrorHandling().sendGlobalWith(ServerMessageBusImpl.this);

      }
    });

    addUnsubscribeListener(new UnsubscribeListener() {
      @Override
      public void onUnsubscribe(SubscriptionEvent event) {
        if (event.isLocalOnly() || event.isRemote() || event.getSubject().startsWith("local:")) return;
        if (messageQueues.isEmpty()) return;

        MessageBuilder.createMessage()
                .toSubject(BuiltInServices.ClientBus.name())
                .command(BusCommands.RemoteUnsubscribe)
                .with(MessageParts.Subject, event.getSubject())
                .noErrorHandling().sendGlobalWith(ServerMessageBusImpl.this);
      }
    });

    scheduler.scheduleAtFixedRate(new Runnable() {
      int runCount = 0;
      boolean lastWasEmpty = false;

      @Override
      public void run() {
        runCount++;
        boolean houseKeepingPerformed = false;
        List<MessageQueue> endSessions = new LinkedList<MessageQueue>();

        int paged = 0, killed = 0;

        while (!houseKeepingPerformed) {
          try {
            final Iterator<MessageQueue> iter = ServerMessageBusImpl.this.messageQueues.values().iterator();
            MessageQueue q;
            while (iter.hasNext()) {
              if ((q = iter.next()).isStale()) {
                iter.remove();
                endSessions.add(q);
                killed++;
              }
              else if (q.isDowngradeCandidate()) {
                if (!q.pageWaitingToDisk()) {
                  paged++;
                }
              }
            }

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

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    message.commit();
    if (!message.hasResource(Resources.Session.name())) {
      handleMessageDeliveryFailure(this, message, "cannot automatically route message. no session contained in message.", null, false);
    }

    final MessageQueue queue = getQueue(getSession(message));

    if (queue == null) {
      handleMessageDeliveryFailure(this, message, "cannot automatically route message. no session contained in message.", null, false);
    }
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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  private static QueueSession getSession(final Message message) {
    return message.getResource(QueueSession.class, Resources.Session.name());
  }

  private MessageQueue getQueueByMessage(final Message message) {
    MessageQueue queue = getQueue(getSession(message));
    if (queue == null) {
      System.out.println("***WARN***");
      throw new QueueUnavailableException("no queue available to send. (queue or session may have expired): " +
              "(session id: " + getSession(message).getSessionId() + ")");
    }
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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  @Override
  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());
View Full Code Here

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

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    }
  }


  private MessageQueue getQueue(QueueSession session, boolean post) {
    MessageQueue queue = service.getBus().getQueue(session);

    if (post && queue != null && queue.getActivationCallback() == null) {
      queue.setActivationCallback(new QueueActivationCallback() {
        boolean resumed = false;

        @Override
        public void activate(MessageQueue queue) {
          if (resumed) {
            return;
          }
          resumed = true;
          queue.setActivationCallback(null);

          try {
            Set<HttpEvent> activeSessEvents;
            QueueSession session;
            session = queueToSession.get(queue);
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Examples of org.jboss.errai.bus.server.api.MessageQueue

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  private void pollForMessages(QueueSession session, HttpServletRequest httpServletRequest,
                               HttpServletResponse httpServletResponse, boolean wait) throws IOException {
    final OutputStream stream = httpServletResponse.getOutputStream();

    try {
      final MessageQueue queue = service.getBus().getQueue(session);
      if (queue == null) {
        switch (getConnectionPhase(httpServletRequest)) {
          case CONNECTING:
          case DISCONNECTING:
            return;
        }

        sendDisconnectDueToSessionExpiry(httpServletResponse.getOutputStream());

        return;
      }
      queue.heartBeat();

      if (wait) {
        synchronized (queue.getActivationLock()) {
          final Continuation cont = ContinuationSupport.getContinuation(httpServletRequest, queue);

          if (!cont.isResumed() && !queue.messagesWaiting()) {
            queue.setActivationCallback(new JettyQueueActivationCallback(cont));
            if (cont.suspend(30 * 1000)) {
              return;
            }
          }
        }
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