Package org.apache.activemq.command

Examples of org.apache.activemq.command.MessageDispatch

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            }
        }

        // No messages left queued on the listeners.. so now dispatch messages
        // queued on the session
        MessageDispatch message = messageQueue.dequeueNoWait();
        if (message == null) {
            return false;
        } else {
            dispatch(message);
            return !messageQueue.isEmpty();
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    }

    protected void serviceRemoteCommand(Command command) {
        try {
            if (command.isMessageDispatch()) {
                MessageDispatch md = (MessageDispatch)command;
                command = md.getMessage();
            }
            if (command.getDataStructureType() == CommandTypes.SHUTDOWN_INFO) {
                LOG.warn("The Master has shutdown");
                shutDown();
            } else {
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                    Thread.currentThread().interrupt();
                }
            }
        } else {
            if (message.isMessageDispatch()) {
                MessageDispatch md = (MessageDispatch)message;
                Runnable sub = md.getTransmitCallback();
                broker.postProcessDispatch(md);
                if (sub != null) {
                    sub.run();
                }
            }
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            }
        }
    }

    protected void processDispatch(Command command) throws IOException {
        final MessageDispatch messageDispatch = (MessageDispatch)(command.isMessageDispatch()
            ? command : null);
        try {
            if (!stopping.get()) {
                if (messageDispatch != null) {
                    broker.preProcessDispatch(messageDispatch);
                }
                dispatch(command);
            }
        } finally {
            if (messageDispatch != null) {
                Runnable sub = messageDispatch.getTransmitCallback();
                broker.postProcessDispatch(messageDispatch);
                if (sub != null) {
                    sub.run();
                }
            }
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        // cleaned up.
        synchronized(dispatchQueue) {
            for (Iterator<Command> iter = dispatchQueue.iterator(); iter.hasNext();) {
                Command command = iter.next();
                if (command.isMessageDispatch()) {
                    MessageDispatch md = (MessageDispatch)command;
                    Runnable sub = md.getTransmitCallback();
                    broker.postProcessDispatch(md);
                    if (sub != null) {
                        sub.run();
                    }
                }
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            long deadline = 0;
            if (timeout > 0) {
                deadline = System.currentTimeMillis() + timeout;
            }
            while (true) {
                MessageDispatch md = unconsumedMessages.dequeue(timeout);
                if (md == null) {
                    if (timeout > 0 && !unconsumedMessages.isClosed()) {
                        timeout = Math.max(deadline - System.currentTimeMillis(), 0);
                    } else {
                        return null;
                    }
                } else if (md.getMessage() == null) {
                    return null;
                } else if (md.getMessage().isExpired()) {
                    if (LOG.isDebugEnabled()) {
                        LOG.debug(getConsumerId() + " received expired message: " + md);
                    }
                    beforeMessageIsConsumed(md);
                    afterMessageIsConsumed(md, true);
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    public Message receive() throws JMSException {
        checkClosed();
        checkMessageListener();

        sendPullCommand(0);
        MessageDispatch md = dequeue(-1);
        if (md == null) {
            return null;
        }

        beforeMessageIsConsumed(md);
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        }

        sendPullCommand(timeout);
        while (timeout > 0) {

            MessageDispatch md;
            if (info.getPrefetchSize() == 0) {
                md = dequeue(-1); // We let the broker let us know when we
                // timeout.
            } else {
                md = dequeue(timeout);
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    public Message receiveNoWait() throws JMSException {
        checkClosed();
        checkMessageListener();
        sendPullCommand(-1);

        MessageDispatch md;
        if (info.getPrefetchSize() == 0) {
            md = dequeue(-1); // We let the broker let us know when we
            // timeout.
        } else {
            md = dequeue(0);
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  private MessageAck makeAckForAllDeliveredMessages(byte type) {
    synchronized (deliveredMessages) {
      if (deliveredMessages.isEmpty())
        return null;
         
      MessageDispatch md = deliveredMessages.getFirst();
        MessageAck ack = new MessageAck(md, type, deliveredMessages.size());
        ack.setFirstMessageId(deliveredMessages.getLast().getMessage().getMessageId());
        return ack;
    }
  }
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Related Classes of org.apache.activemq.command.MessageDispatch

  • org.apache.activemq.ActiveMQConnection
  • org.apache.activemq.ActiveMQInputStream
  • org.apache.activemq.ActiveMQMessageConsumer
  • org.apache.activemq.ActiveMQSession
  • org.apache.activemq.ActiveMQSessionExecutor
  • org.apache.activemq.broker.BrokerTestSupport
  • org.apache.activemq.broker.ft.MasterConnector
  • org.apache.activemq.broker.region.DurableTopicSubscription
  • org.apache.activemq.broker.region.PrefetchSubscription
  • org.apache.activemq.broker.region.TopicSubscription
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