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

Examples of org.apache.qpid.server.protocol.v0_8.AMQProtocolSession$Task

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    {
    }

    public void methodReceived(AMQStateManager stateManager, QueueBindBody body, int channelId) throws AMQException
    {
        AMQProtocolSession protocolConnection = stateManager.getProtocolSession();
        VirtualHost virtualHost = protocolConnection.getVirtualHost();
        QueueRegistry queueRegistry = virtualHost.getQueueRegistry();
        AMQChannel channel = protocolConnection.getChannel(channelId);

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

        final AMQQueue queue;
        final AMQShortString routingKey;

        if (body.getQueue() == 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 = queue.getNameShortString();
            }
            else
            {
                routingKey = body.getRoutingKey().intern();
            }
        }
        else
        {
            queue = queueRegistry.getQueue(body.getQueue());
            routingKey = body.getRoutingKey() == null ? AMQShortString.EMPTY_STRING : body.getRoutingKey().intern();
        }

        if (queue == null)
        {
            throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
        }
        final String exchangeName = body.getExchange() == null ? null : body.getExchange().toString();
        final Exchange exch = virtualHost.getExchange(exchangeName);
        if (exch == null)
        {
            throw body.getChannelException(AMQConstant.NOT_FOUND, "Exchange " + exchangeName + " does not exist.");
        }


        try
        {
            if (queue.isExclusive() && !queue.isDurable())
            {
                AMQSessionModel session = queue.getExclusiveOwningSession();
                if (session == null || session.getConnectionModel() != protocolConnection)
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                      "Queue " + queue.getNameShortString() + " is exclusive, but not created on this Connection.");
                }
            }

            if (!exch.isBound(routingKey, body.getArguments(), queue))
            {
                String bindingKey = String.valueOf(routingKey);
                Map<String,Object> arguments = FieldTable.convertToMap(body.getArguments());

                if(!exch.addBinding(bindingKey, queue, arguments) && ExchangeDefaults.TOPIC_EXCHANGE_CLASS.equals(exch.getTypeShortString()))
                {
                    Binding oldBinding = exch.getBinding(bindingKey, queue, arguments);

                    Map<String, Object> oldArgs = oldBinding.getArguments();
                    if((oldArgs == null && !arguments.isEmpty()) || (oldArgs != null && !oldArgs.equals(arguments)))
                    {
                        exch.replaceBinding(oldBinding.getId(), bindingKey, queue, arguments);
                    }
                }
            }
        }
        catch (AMQException e)
        {
            throw body.getChannelException(AMQConstant.CHANNEL_ERROR, e.toString());
        }

        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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        _failIfNotFound = failIfNotFound;
    }

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

        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 = queueRegistry.getQueue(body.getQueue());
        }

        if(queue == null)
        {
            if(_failIfNotFound)
            {
                throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
            }
        }
        else
        {
                AMQSessionModel session = queue.getExclusiveOwningSession();

                if (queue.isExclusive() && (session == null || session.getConnectionModel() != protocolConnection))
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                      "Queue is exclusive, but not created on this Connection.");
                }

                long purged = queue.clearQueue();


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

                }
        }
    }
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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);
        }

        Exchange exchange;

        if (body.getPassive())
        {
            exchange = virtualHost.getExchange(exchangeName == null ? null : exchangeName.toString());
            if(exchange == null)
            {
                throw body.getChannelException(AMQConstant.NOT_FOUND, "Unknown exchange: " + exchangeName);
            }
            else if (!exchange.getTypeShortString().equals(body.getType()) && !(body.getType() == null || body.getType().length() ==0))
            {

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

        }
        else
        {
            try
            {
                exchange = virtualHost.createExchange(null,
                                                      exchangeName == null ? null : exchangeName.intern().toString(),
                                                      body.getType() == null ? null : body.getType().intern().toString(),
                                                      body.getDurable(),
                                                      body.getAutoDelete(),
                        null);

            }
            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(!exchange.getTypeShortString().equals(body.getType()))
                {
                    throw new AMQConnectionException(AMQConstant.NOT_ALLOWED, "Attempt to redeclare exchange: "
                                                                              + exchangeName + " of type "
                                                                              + exchange.getTypeShortString()
                                                                              + " 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);
            }
        }


        if(!body.getNowait())
        {
            MethodRegistry methodRegistry = session.getMethodRegistry();
            AMQMethodBody responseBody = methodRegistry.createExchangeDeclareOkBody();
            channel.sync();
            session.writeFrame(responseBody.generateFrame(channelId));
        }
    }
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    }

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

        if (queue == null)
        {
            if (_failIfNotFound)
            {
                throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist.");
            }
        }
        else
        {
            if (body.getIfEmpty() && !queue.isEmpty())
            {
                throw body.getChannelException(AMQConstant.IN_USE, "Queue: " + body.getQueue() + " is not empty.");
            }
            else if (body.getIfUnused() && !queue.isUnused())
            {
                // TODO - Error code
                throw body.getChannelException(AMQConstant.IN_USE, "Queue: " + body.getQueue() + " is still used.");
            }
            else
            {
                AMQSessionModel session = queue.getExclusiveOwningSession();
                if (queue.isExclusive() && !queue.isDurable() && (session == null || session.getConnectionModel() != protocolConnection))
                {
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                      "Queue " + queue.getNameShortString() + " is exclusive, but not created on this Connection.");
                }

                int purged = queue.delete();

                if (queue.isDurable())
                {
                    DurableConfigurationStoreHelper.removeQueue(store, queue);
                }

                MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
                QueueDeleteOkBody responseBody = methodRegistry.createQueueDeleteOkBody(purged);
                protocolConnection.writeFrame(responseBody.generateFrame(channelId));
            }
        }
    }
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    {
    }

    public void methodReceived(AMQStateManager stateManager, ExchangeBoundBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();
        VirtualHost virtualHost = session.getVirtualHost();
        QueueRegistry queueRegistry = virtualHost.getQueueRegistry();
        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();
        if (exchangeName == null)
        {
            throw new AMQException("Exchange exchange must not be null");
        }
        Exchange exchange = virtualHost.getExchange(exchangeName.toString());
        ExchangeBoundOkBody response;
        if (exchange == null)
        {


            response = methodRegistry.createExchangeBoundOkBody(EXCHANGE_NOT_FOUND,
                                                                new AMQShortString("Exchange " + exchangeName + " not found"));
        }
        else if (routingKey == null)
        {
            if (queueName == null)
            {
                if (exchange.hasBindings())
                {
                    response = methodRegistry.createExchangeBoundOkBody(OK, null);
                }
                else
                {

                    response = methodRegistry.createExchangeBoundOkBody(NO_BINDINGS,  // replyCode
                        null);  // replyText
                }
            }
            else
            {

                AMQQueue queue = queueRegistry.getQueue(queueName);
                if (queue == null)
                {

                    response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_FOUND,  // replyCode
                        new AMQShortString("Queue " + queueName + " not found"));  // replyText
                }
                else
                {
                    if (exchange.isBound(queue))
                    {

                        response = methodRegistry.createExchangeBoundOkBody(OK,  // replyCode
                            null);  // replyText
                    }
                    else
                    {

                        response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_BOUND,  // replyCode
                            new AMQShortString("Queue " + queueName + " not bound to exchange " + exchangeName));  // replyText
                    }
                }
            }
        }
        else if (queueName != null)
        {
            AMQQueue queue = queueRegistry.getQueue(queueName);
            if (queue == null)
            {

                response = methodRegistry.createExchangeBoundOkBody(QUEUE_NOT_FOUND,  // replyCode
                    new AMQShortString("Queue " + queueName + " not found"));  // replyText
            }
            else
            {
                if (exchange.isBound(body.getRoutingKey(), queue))
                {

                    response = methodRegistry.createExchangeBoundOkBody(OK,  // replyCode
                        null);  // replyText
                }
                else
                {

                    String message = "Queue " + queueName + " not bound with routing key " +
                                        body.getRoutingKey() + " to exchange " + exchangeName;

                    if(message.length()>255)
                    {
                        message = message.substring(0,254);
                    }
                    response = methodRegistry.createExchangeBoundOkBody(SPECIFIC_QUEUE_NOT_BOUND_WITH_RK,  // replyCode
                        new AMQShortString(message));  // replyText
                }
            }
        }
        else
        {
            if (exchange.isBound(body.getRoutingKey()))
            {

                response = methodRegistry.createExchangeBoundOkBody(OK,  // replyCode
                    null);  // replyText
            }
            else
            {

                response = methodRegistry.createExchangeBoundOkBody(NO_QUEUE_BOUND_WITH_RK,  // replyCode
                    new AMQShortString("No queue bound with routing key " + body.getRoutingKey() +
                    " to exchange " + exchangeName));  // replyText
            }
        }
        session.writeFrame(response.generateFrame(channelId));
    }
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    {
    }

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

        // Protect the broker against out of order frame request.
        if (virtualHost == null)
        {
            throw new AMQException(AMQConstant.COMMAND_INVALID, "Virtualhost has not yet been set. ConnectionOpen has not been called.", null);
        }
        _logger.info("Connecting to: " + virtualHost.getName());

        final AMQChannel channel = new AMQChannel(session,channelId, virtualHost.getMessageStore());

        session.addChannel(channel);

        ChannelOpenOkBody response;

        ProtocolVersion pv = session.getProtocolVersion();

        if(pv.equals(ProtocolVersion.v8_0))
        {
            MethodRegistry_8_0 methodRegistry = (MethodRegistry_8_0) MethodRegistry.getMethodRegistry(ProtocolVersion.v8_0);
            response = methodRegistry.createChannelOpenOkBody();

        }
        else if(pv.equals(ProtocolVersion.v0_9))
        {
            MethodRegistry_0_9 methodRegistry = (MethodRegistry_0_9) MethodRegistry.getMethodRegistry(ProtocolVersion.v0_9);
            UUID uuid = UUID.randomUUID();
            ByteArrayOutputStream output = new ByteArrayOutputStream();
            DataOutputStream dataOut = new DataOutputStream(output);
            try
            {
                dataOut.writeLong(uuid.getMostSignificantBits());
                dataOut.writeLong(uuid.getLeastSignificantBits());
                dataOut.flush();
                dataOut.close();
            }
            catch (IOException e)
            {
                // This *really* shouldn't happen as we're not doing any I/O
                throw new ConnectionScopedRuntimeException("I/O exception when writing to byte array", e);
            }

            // should really associate this channelId to the session
            byte[] channelName = output.toByteArray();

            response = methodRegistry.createChannelOpenOkBody(channelName);
        }
        else if(pv.equals(ProtocolVersion.v0_91))
        {
            MethodRegistry_0_91 methodRegistry = (MethodRegistry_0_91) MethodRegistry.getMethodRegistry(ProtocolVersion.v0_91);
            UUID uuid = UUID.randomUUID();
            ByteArrayOutputStream output = new ByteArrayOutputStream();
            DataOutputStream dataOut = new DataOutputStream(output);
            try
            {
                dataOut.writeLong(uuid.getMostSignificantBits());
                dataOut.writeLong(uuid.getLeastSignificantBits());
                dataOut.flush();
                dataOut.close();
            }
            catch (IOException e)
            {
                // This *really* shouldn't happen as we're not doing any I/O
                throw new ConnectionScopedRuntimeException("I/O exception when writing to byte array", e);
            }

            // should really associate this channelId to the session
            byte[] channelName = output.toByteArray();

            response = methodRegistry.createChannelOpenOkBody(channelName);
        }
        else
        {
            throw new AMQException(AMQConstant.INTERNAL_ERROR, "Got channel open for protocol version not catered for: " + pv, null);
        }


        session.writeFrame(response.generateFrame(channelId));
    }
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    {
    }

    public void methodReceived(AMQStateManager stateManager, BasicPublishBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();
        if (_logger.isDebugEnabled())
        {
            _logger.debug("Publish received on channel " + channelId);
        }

        AMQShortString exchangeName = body.getExchange();
        VirtualHost vHost = session.getVirtualHost();

        // TODO: check the delivery tag field details - is it unique across the broker or per subscriber?

        MessageDestination destination;

        if (exchangeName == null || AMQShortString.EMPTY_STRING.equals(exchangeName))
        {
            destination = vHost.getDefaultDestination();
        }
        else
        {
            destination = vHost.getMessageDestination(exchangeName.toString());
        }

        // if the exchange does not exist we raise a channel exception
        if (destination == null)
        {
            throw body.getChannelException(AMQConstant.NOT_FOUND, "Unknown exchange name");
        }
        else
        {
            // The partially populated BasicDeliver frame plus the received route body
            // is stored in the channel. Once the final body frame has been received
            // it is routed to the exchange.
            AMQChannel channel = session.getChannel(channelId);

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

            MessagePublishInfo info = session.getMethodRegistry().getProtocolVersionMethodConverter().convertToInfo(body);
            info.setExchange(exchangeName);
            try
            {
                channel.setPublishFrame(info, destination);
            }
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    {
    }

    public void methodReceived(AMQStateManager stateManager, BasicConsumeBody body, int channelId) throws AMQException
    {
        AMQProtocolSession protocolConnection = stateManager.getProtocolSession();

        AMQChannel channel = protocolConnection.getChannel(channelId);
        VirtualHost vHost = protocolConnection.getVirtualHost();

        if (channel == null)
        {
            throw body.getChannelNotFoundException(channelId);
        }
        else
        {
            channel.sync();
            if (_logger.isDebugEnabled())
            {
                _logger.debug("BasicConsume: from '" + body.getQueue() +
                              "' for:" + body.getConsumerTag() +
                              " nowait:" + body.getNowait() +
                              " args:" + body.getArguments());
            }

            MessageSource queue = body.getQueue() == null ? channel.getDefaultQueue() : vHost.getQueue(body.getQueue().intern().toString());

            if (queue == null)
            {
                if (_logger.isDebugEnabled())
                {
                    _logger.debug("No queue for '" + body.getQueue() + "'");
                }
                if (body.getQueue() != null)
                {
                    String msg = "No such queue, '" + body.getQueue() + "'";
                    throw body.getChannelException(AMQConstant.NOT_FOUND, msg);
                }
                else
                {
                    String msg = "No queue name provided, no default queue defined.";
                    throw body.getConnectionException(AMQConstant.NOT_ALLOWED, msg);
                }
            }
            else
            {
                final AMQShortString consumerTagName;

                if (body.getConsumerTag() != null)
                {
                    consumerTagName = body.getConsumerTag().intern(false);
                }
                else
                {
                    consumerTagName = null;
                }

                try
                {
                    if(consumerTagName == null || channel.getSubscription(consumerTagName) == null)
                    {

                        AMQShortString consumerTag = channel.consumeFromSource(consumerTagName,
                                                                               queue,
                                                                               !body.getNoAck(),
                                                                               body.getArguments(),
                                                                               body.getExclusive(),
                                                                               body.getNoLocal());
                        if (!body.getNowait())
                        {
                            MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
                            AMQMethodBody responseBody = methodRegistry.createBasicConsumeOkBody(consumerTag);
                            protocolConnection.writeFrame(responseBody.generateFrame(channelId));

                        }
                    }
                    else
                    {
                        AMQShortString msg = AMQShortString.validValueOf("Non-unique consumer tag, '" + body.getConsumerTag() + "'");

                        MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
                        AMQMethodBody responseBody = methodRegistry.createConnectionCloseBody(AMQConstant.NOT_ALLOWED.getCode(),    // replyCode
                                                                 msg,               // replytext
                                                                 body.getClazz(),
                                                                 body.getMethod());
                        protocolConnection.writeFrame(responseBody.generateFrame(0));
                    }

                }
                catch (AMQInvalidArgumentException ise)
                {
                    _logger.debug("Closing connection due to invalid selector");

                    MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
                    AMQMethodBody responseBody = methodRegistry.createChannelCloseBody(AMQConstant.ARGUMENT_INVALID.getCode(),
                                                                                       AMQShortString.validValueOf(ise.getMessage()),
                                                                                       body.getClazz(),
                                                                                       body.getMethod());
                    protocolConnection.writeFrame(responseBody.generateFrame(channelId));


                }
                catch (AMQQueue.ExistingExclusiveConsumer e)
                {
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    {
    }

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

        final AMQQueue queue;
        final AMQShortString routingKey;


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

        if (body.getQueue() == null)
        {

            queue = channel.getDefaultQueue();

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

            routingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().intern(false);

        }
        else
        {
            queue = virtualHost.getQueue(body.getQueue().toString());
            routingKey = body.getRoutingKey() == null ? null : body.getRoutingKey().intern(false);
        }

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

        if(isDefaultExchange(body.getExchange()))
        {
            throw body.getConnectionException(AMQConstant.NOT_ALLOWED, "Cannot unbind the queue " + queue.getName() + " from the default exchange");
        }

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

        if(!exch.hasBinding(String.valueOf(routingKey), queue))
        {
            throw body.getChannelException(AMQConstant.NOT_FOUND,"No such binding");
        }
        else
        {
            try
            {
                exch.deleteBinding(String.valueOf(routingKey), queue);
            }
            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);
        }

        final MethodRegistry registry = session.getMethodRegistry();
        final AMQMethodBody responseBody;
        if (registry instanceof MethodRegistry_0_9)
        {
            responseBody = ((MethodRegistry_0_9)registry).createQueueUnbindOkBody();
        }
        else if (registry instanceof MethodRegistry_0_91)
        {
            responseBody = ((MethodRegistry_0_91)registry).createQueueUnbindOkBody();
        }
        else
        {
            // 0-8 does not support QueueUnbind
            throw new AMQException(AMQConstant.COMMAND_INVALID, "QueueUnbind not present in AMQP version: " + session.getProtocolVersion(), null);
        }
        channel.sync();
        session.writeFrame(responseBody.generateFrame(channelId));
    }
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        return _instance;
    }

    public void methodReceived(AMQStateManager stateManager, BasicRecoverBody 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.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.v8_0))
        {
            MethodRegistry_8_0 methodRegistry = (MethodRegistry_8_0) session.getMethodRegistry();
            AMQMethodBody recoverOk = methodRegistry.createBasicRecoverOkBody();
            channel.sync();
            session.writeFrame(recoverOk.generateFrame(channelId));

        }

    }
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