Package org.apache.qpid.server.protocol.v0_8

Examples of org.apache.qpid.server.protocol.v0_8.AMQChannel$ImmediateAction

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    {
        final AMQProtocolSession session = stateManager.getProtocolSession();

        try
        {
            AMQChannel channel = session.getChannel(channelId);

            if (channel == null)
            {
                throw body.getChannelNotFoundException(channelId);
            }



            final MethodRegistry methodRegistry = session.getMethodRegistry();
            final AMQMethodBody responseBody = methodRegistry.createTxRollbackOkBody();

            Runnable task = new Runnable()
            {

                public void run()
                {
                    session.writeFrame(responseBody.generateFrame(channelId));
                }
            };

            channel.rollback(task);

            //Now resend all the unacknowledged messages back to the original subscribers.
            //(Must be done after the TxnRollback-ok response).
            // Why, are we not allowed to send messages back to client before the ok method?
            channel.resend();

        }
        catch (AMQException e)
        {
            throw body.getChannelException(e.getErrorCode(), "Failed to rollback: " + e.getMessage());
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        AMQQueue queue;

        //TODO: do we need to check that the queue already exists with exactly the same "configuration"?

        AMQChannel channel = protocolConnection.getChannel(channelId);

        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }

        if(body.getPassive())
        {
            queue = virtualHost.getQueue(queueName.toString());
            if (queue == null)
            {
                String msg = "Queue: " + queueName + " not found on VirtualHost(" + virtualHost + ").";
                throw body.getChannelException(AMQConstant.NOT_FOUND, msg);
            }
            else
            {
                if (!queue.verifySessionAccess(channel))
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                      "Queue " + queue.getName() + " is exclusive, but not created on this Connection.");
                }

                //set this as the default queue on the channel:
                channel.setDefaultQueue(queue);
            }
        }
        else
        {

            try
            {

                queue = createQueue(channel, queueName, body, virtualHost, protocolConnection);

            }
            catch(QueueExistsException qe)
            {

                queue = qe.getExistingQueue();

                if (!queue.verifySessionAccess(channel))
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                      "Queue " + queue.getName() + " is exclusive, but not created on this Connection.");
                }
                else if(queue.isExclusive() != body.getExclusive())
                {

                    throw body.getChannelException(AMQConstant.ALREADY_EXISTS,
                            "Cannot re-declare queue '" + queue.getName() + "' with different exclusivity (was: "
                            + queue.isExclusive() + " requested " + body.getExclusive() + ")");
                }
                else if((body.getAutoDelete() && queue.getLifetimePolicy() != LifetimePolicy.DELETE_ON_NO_OUTBOUND_LINKS)
                    || (!body.getAutoDelete() && queue.getLifetimePolicy() != ((body.getExclusive() && !body.getDurable()) ? LifetimePolicy.DELETE_ON_CONNECTION_CLOSE : LifetimePolicy.PERMANENT)))
                {
                    throw body.getChannelException(AMQConstant.ALREADY_EXISTS,
                                                      "Cannot re-declare queue '" + queue.getName() + "' with different lifetime policy (was: "
                                                        + queue.getLifetimePolicy() + " requested autodelete: " + body.getAutoDelete() + ")");
                }
                else if(queue.isDurable() != body.getDurable())
                {
                    throw body.getChannelException(AMQConstant.ALREADY_EXISTS,
                                                      "Cannot re-declare queue '" + queue.getName() + "' with different durability (was: "
                                                        + queue.isDurable() + " requested " + body.getDurable() + ")");
                }

            }
            catch (AccessControlException e)
            {
                throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, e.getMessage());
            }

            //set this as the default queue on the channel:
            channel.setDefaultQueue(queue);
        }

        if (!body.getNowait())
        {
            channel.sync();
            MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
            QueueDeclareOkBody responseBody =
                    methodRegistry.createQueueDeclareOkBody(queueName,
                                                            queue.getQueueDepthMessages(),
                                                            queue.getConsumerCount());
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    public void methodReceived(AMQStateManager stateManager, ExchangeDeclareBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();
        VirtualHost virtualHost = session.getVirtualHost();
        final AMQChannel channel = session.getChannel(channelId);
        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }

        final AMQShortString exchangeName = body.getExchange();
        if (_logger.isDebugEnabled())
        {
            _logger.debug("Request to declare exchange of type " + body.getType() + " with name " + exchangeName);
        }

        ExchangeImpl exchange;

        if(isDefaultExchange(exchangeName))
        {
            if(!new AMQShortString(DirectExchange.TYPE.getType()).equals(body.getType()))
            {
                throw new AMQConnectionException(AMQConstant.NOT_ALLOWED, "Attempt to redeclare default exchange: "
                                                                          + " of type "
                                                                          + DirectExchange.TYPE.getType()
                                                                          + " to " + body.getType() +".",
                                                 body.getClazz(), body.getMethod(),
                                                 body.getMajor(), body.getMinor(),null);
            }
        }
        else
        {
            if (body.getPassive())
            {
                exchange = virtualHost.getExchange(exchangeName.toString());
                if(exchange == null)
                {
                    throw body.getChannelException(AMQConstant.NOT_FOUND, "Unknown exchange: " + exchangeName);
                }
                else if (!(body.getType() == null || body.getType().length() ==0) && !exchange.getTypeName().equals(body.getType().asString()))
                {

                    throw new AMQConnectionException(AMQConstant.NOT_ALLOWED, "Attempt to redeclare exchange: " +
                                      exchangeName + " of type " + exchange.getTypeName()
                                      + " to " + body.getType() +".",body.getClazz(), body.getMethod(),body.getMajor(),body.getMinor(),null);
                }

            }
            else
            {
                try
                {
                    String name = exchangeName == null ? null : exchangeName.intern().toString();
                    String type = body.getType() == null ? null : body.getType().intern().toString();
                    Map<String,Object> attributes = new HashMap<String, Object>();

                    attributes.put(org.apache.qpid.server.model.Exchange.ID, null);
                    attributes.put(org.apache.qpid.server.model.Exchange.NAME,name);
                    attributes.put(org.apache.qpid.server.model.Exchange.TYPE,type);
                    attributes.put(org.apache.qpid.server.model.Exchange.DURABLE, body.getDurable());
                    attributes.put(org.apache.qpid.server.model.Exchange.LIFETIME_POLICY,
                                   body.getAutoDelete() ? LifetimePolicy.DELETE_ON_NO_LINKS : LifetimePolicy.PERMANENT);
                    attributes.put(org.apache.qpid.server.model.Exchange.ALTERNATE_EXCHANGE, null);
                    exchange = virtualHost.createExchange(attributes);

                }
                catch(ReservedExchangeNameException e)
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                              "Attempt to declare exchange: " + exchangeName +
                                              " which begins with reserved prefix.");

                }
                catch(ExchangeExistsException e)
                {
                    exchange = e.getExistingExchange();
                    if(!new AMQShortString(exchange.getTypeName()).equals(body.getType()))
                    {
                        throw new AMQConnectionException(AMQConstant.NOT_ALLOWED, "Attempt to redeclare exchange: "
                                                                                  + exchangeName + " of type "
                                                                                  + exchange.getTypeName()
                                                                                  + " to " + body.getType() +".",
                                                         body.getClazz(), body.getMethod(),
                                                         body.getMajor(), body.getMinor(),null);
                    }
                }
                catch(AMQUnknownExchangeType e)
                {
                    throw body.getConnectionException(AMQConstant.COMMAND_INVALID, "Unknown exchange: " + exchangeName,e);
                }
                catch (AccessControlException e)
                {
                    throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, e.getMessage());
                }
                catch (UnknownExchangeException e)
                {
                    // note - since 0-8/9/9-1 can't set the alt. exchange this exception should never occur
                    throw body.getConnectionException(AMQConstant.NOT_FOUND, "Unknown alternate exchange",e);
                }
            }
        }

        if(!body.getNowait())
        {
            MethodRegistry methodRegistry = session.getMethodRegistry();
            AMQMethodBody responseBody = methodRegistry.createExchangeDeclareOkBody();
            channel.sync();
            session.writeFrame(responseBody.generateFrame(channelId));
        }
    }
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        AMQProtocolSession protocolConnection = stateManager.getProtocolSession();
        VirtualHost virtualHost = protocolConnection.getVirtualHost();
        DurableConfigurationStore store = virtualHost.getDurableConfigurationStore();


        AMQChannel channel = protocolConnection.getChannel(channelId);

        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }
        channel.sync();
        AMQQueue queue;
        if (body.getQueue() == null)
        {

            //get the default queue on the channel:
            queue = channel.getDefaultQueue();
        }
        else
        {
            queue = virtualHost.getQueue(body.getQueue().toString());
        }
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    public void methodReceived(AMQStateManager stateManager, QueueBindBody body, int channelId) throws AMQException
    {
        AMQProtocolSession protocolConnection = stateManager.getProtocolSession();
        VirtualHost virtualHost = protocolConnection.getVirtualHost();
        AMQChannel channel = protocolConnection.getChannel(channelId);

        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }

        final AMQQueue queue;
        final AMQShortString routingKey;

        final AMQShortString queueName = body.getQueue();

        if (queueName == null)
        {

            queue = channel.getDefaultQueue();

            if (queue == null)
            {
                throw body.getChannelException(AMQConstant.NOT_FOUND, "No default queue defined on channel and queue was null");
            }

            if (body.getRoutingKey() == null)
            {
                routingKey = AMQShortString.valueOf(queue.getName());
            }
            else
            {
                routingKey = body.getRoutingKey().intern();
            }
        }
        else
        {
            queue = virtualHost.getQueue(queueName.toString());
            routingKey = body.getRoutingKey() == null ? AMQShortString.EMPTY_STRING : body.getRoutingKey().intern();
        }

        if (queue == null)
        {
            throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + queueName + " does not exist.");
        }

        if(isDefaultExchange(body.getExchange()))
        {
            throw body.getConnectionException(AMQConstant.NOT_ALLOWED, "Cannot bind the queue " + queueName + " to the default exchange");
        }

        final String exchangeName = body.getExchange().toString();

        final ExchangeImpl exch = virtualHost.getExchange(exchangeName);
        if (exch == null)
        {
            throw body.getChannelException(AMQConstant.NOT_FOUND, "Exchange " + exchangeName + " does not exist.");
        }


        try
        {

            Map<String,Object> arguments = FieldTable.convertToMap(body.getArguments());
            String bindingKey = String.valueOf(routingKey);

            if (!exch.isBound(bindingKey, arguments, queue))
            {

                if(!exch.addBinding(bindingKey, queue, arguments) && TopicExchange.TYPE.equals(exch.getExchangeType()))
                {
                    exch.replaceBinding(bindingKey, queue, arguments);
                }
            }
        }
        catch (AccessControlException e)
        {
            throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, e.getMessage());
        }

        if (_log.isInfoEnabled())
        {
            _log.info("Binding queue " + queue + " to exchange " + exch + " with routing key " + routingKey);
        }
        if (!body.getNowait())
        {
            channel.sync();
            MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
            AMQMethodBody responseBody = methodRegistry.createQueueBindOkBody();
            protocolConnection.writeFrame(responseBody.generateFrame(channelId));

        }
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    public void methodReceived(AMQStateManager stateManager, QueuePurgeBody body, int channelId) throws AMQException
    {
        AMQProtocolSession protocolConnection = stateManager.getProtocolSession();
        VirtualHost virtualHost = protocolConnection.getVirtualHost();

        AMQChannel channel = protocolConnection.getChannel(channelId);
        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }
        AMQQueue queue;
        if(body.getQueue() == null)
        {

           //get the default queue on the channel:
           queue = channel.getDefaultQueue();

            if(queue == null)
            {
                if(_failIfNotFound)
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,"No queue specified.");
                }
            }
        }
        else
        {
            queue = virtualHost.getQueue(body.getQueue().toString());
        }

        if(queue == null)
        {
            if(_failIfNotFound)
            {
                throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
            }
        }
        else
        {
                if (!queue.verifySessionAccess(channel))
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                      "Queue is exclusive, but not created on this Connection.");
                }

            long purged = 0;
            try
            {
                purged = queue.clearQueue();
            }
            catch (AccessControlException e)
            {
                throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, e.getMessage());
            }


            if(!body.getNowait())
                {
                    channel.sync();
                    MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
                    AMQMethodBody responseBody = methodRegistry.createQueuePurgeOkBody(purged);
                    protocolConnection.writeFrame(responseBody.generateFrame(channelId));

                }
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    {
        AMQProtocolSession session = stateManager.getProtocolSession();
        VirtualHost virtualHost = session.getVirtualHost();
        MethodRegistry methodRegistry = session.getMethodRegistry();

        final AMQChannel channel = session.getChannel(channelId);
        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }
        channel.sync();


        AMQShortString exchangeName = body.getExchange();
        AMQShortString queueName = body.getQueue();
        AMQShortString routingKey = body.getRoutingKey();
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    public void methodReceived(AMQStateManager stateManager, ExchangeDeleteBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();
        VirtualHost virtualHost = session.getVirtualHost();
        final AMQChannel channel = session.getChannel(channelId);
        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }
        channel.sync();
        try
        {

            if(isDefaultExchange(body.getExchange()))
            {
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    public void methodReceived(AMQStateManager stateManager, BasicRecoverSyncBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();

        _logger.debug("Recover received on protocol session " + session + " and channel " + channelId);
        AMQChannel channel = session.getChannel(channelId);


        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }
        channel.sync();
        channel.resend();

        // Qpid 0-8 hacks a synchronous -ok onto recover.
        // In Qpid 0-9 we create a separate sync-recover, sync-recover-ok pair to be "more" compliant
        if(session.getProtocolVersion().equals(ProtocolVersion.v0_9))
        {
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    public void methodReceived(AMQStateManager stateManager, BasicRejectBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();

        AMQChannel channel = session.getChannel(channelId);

        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }

        if (_logger.isDebugEnabled())
        {
            _logger.debug("Rejecting:" + body.getDeliveryTag() +
                          ": Requeue:" + body.getRequeue() +
                          " on channel:" + channel.debugIdentity());
        }

        long deliveryTag = body.getDeliveryTag();

        MessageInstance message = channel.getUnacknowledgedMessageMap().get(deliveryTag);

        if (message == null)
        {
            _logger.warn("Dropping reject request as message is null for tag:" + deliveryTag);
        }
        else
        {

            if (message.getMessage() == null)
            {
                _logger.warn("Message has already been purged, unable to Reject.");
                return;
            }


            if (_logger.isDebugEnabled())
            {
                _logger.debug("Rejecting: DT:" + deliveryTag + "-" + message.getMessage() +
                              ": Requeue:" + body.getRequeue() +
                              " on channel:" + channel.debugIdentity());
            }

            if (body.getRequeue())
            {
                //this requeue represents a message rejected from the pre-dispatch queue
                //therefore we need to amend the delivery counter.
                message.decrementDeliveryCount();

                channel.requeue(deliveryTag);
            }
            else
            {
                // Since the Java client abuses the reject flag for requeing after rollback, we won't set reject here
                // as it would prevent redelivery
                // message.reject();

                final boolean maxDeliveryCountEnabled = channel.isMaxDeliveryCountEnabled(deliveryTag);
                _logger.debug("maxDeliveryCountEnabled: " + maxDeliveryCountEnabled + " deliveryTag " + deliveryTag);
                if (maxDeliveryCountEnabled)
                {
                    final boolean deliveredTooManyTimes = channel.isDeliveredTooManyTimes(deliveryTag);
                    _logger.debug("deliveredTooManyTimes: " + deliveredTooManyTimes + " deliveryTag " + deliveryTag);
                    if (deliveredTooManyTimes)
                    {
                        channel.deadLetter(body.getDeliveryTag());
                    }
                    else
                    {
                        //this requeue represents a message rejected because of a recover/rollback that we
                        //are not ready to DLQ. We rely on the reject command to resend from the unacked map
                        //and therefore need to increment the delivery counter so we cancel out the effect
                        //of the AMQChannel#resend() decrement.
                        message.incrementDeliveryCount();
                    }
                }
                else
                {
                    channel.requeue(deliveryTag);
                }
            }
        }
    }
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