Package org.apache.qpid.server.protocol

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

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    private final AtomicInteger _counter = new AtomicInteger();

    public void methodReceived(AMQStateManager stateManager, QueueDeclareBody body, int channelId) throws AMQException
    {
        final AMQProtocolSession protocolConnection = stateManager.getProtocolSession();
        final AMQSessionModel session = protocolConnection.getChannel(channelId);
        VirtualHost virtualHost = protocolConnection.getVirtualHost();
        ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry();
        QueueRegistry queueRegistry = virtualHost.getQueueRegistry();
        DurableConfigurationStore store = virtualHost.getDurableConfigurationStore();

        final AMQShortString queueName;

        // if we aren't given a queue name, we create one which we return to the client
        if ((body.getQueue() == null) || (body.getQueue().length() == 0))
        {
            queueName = createName();
        }
        else
        {
            queueName = body.getQueue().intern();
        }

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

        synchronized (queueRegistry)
        {
            queue = queueRegistry.getQueue(queueName);

            AMQSessionModel owningSession = null;

            if (queue != null)
            {
                owningSession = queue.getExclusiveOwningSession();
            }

            if (queue == null)
            {
                if (body.getPassive())
                {
                    String msg = "Queue: " + queueName + " not found on VirtualHost(" + virtualHost + ").";
                    throw body.getChannelException(AMQConstant.NOT_FOUND, msg);
                }
                else
                {
                    queue = createQueue(queueName, body, virtualHost, protocolConnection);
                    queue.setAuthorizationHolder(protocolConnection);
                    if (queue.isDurable() && !queue.isAutoDelete())
                    {
                        store.createQueue(queue, body.getArguments());
                    }
                    if(body.getAutoDelete())
                    {
                        queue.setDeleteOnNoConsumers(true);
                    }
                    queueRegistry.registerQueue(queue);
                    if (body.getExclusive())
                    {
                        queue.setExclusiveOwningSession(protocolConnection.getChannel(channelId));
                        queue.setAuthorizationHolder(protocolConnection);

                        if(!body.getDurable())
                        {
                            final AMQQueue q = queue;
                            final AMQProtocolSession.Task sessionCloseTask = new AMQProtocolSession.Task()
                            {
                                public void doTask(AMQProtocolSession session) throws AMQException
                                {
                                    q.setExclusiveOwningSession(null);
                                }
                            };
                            protocolConnection.addSessionCloseTask(sessionCloseTask);
                            queue.addQueueDeleteTask(new AMQQueue.Task() {
                                public void doTask(AMQQueue queue) throws AMQException
                                {
                                    protocolConnection.removeSessionCloseTask(sessionCloseTask);
                                }
                            });
                        }
                    }
                    if (autoRegister)
                    {
                        Exchange defaultExchange = exchangeRegistry.getDefaultExchange();

                        virtualHost.getBindingFactory().addBinding(String.valueOf(queueName), queue, defaultExchange, Collections.EMPTY_MAP);
                        _logger.info("Queue " + queueName + " bound to default exchange(" + defaultExchange.getNameShortString() + ")");
                    }
                }
            }
            else if (queue.isExclusive() && !queue.isDurable() && (owningSession == null || owningSession.getConnectionModel() != protocolConnection))
            {
                throw body.getConnectionException(AMQConstant.NOT_ALLOWED,
                                                  "Queue " + queue.getNameShortString() + " is exclusive, but not created on this Connection.");
            }
            else if(!body.getPassive() && ((queue.isExclusive()) != body.getExclusive()))
            {

                throw body.getChannelException(AMQConstant.ALREADY_EXISTS,
                                                  "Cannot re-declare queue '" + queue.getNameShortString() + "' with different exclusivity (was: "
                                                    + queue.isExclusive() + " requested " + body.getExclusive() + ")");
            }
            else if (!body.getPassive() && body.getExclusive() && !(queue.isDurable() ? String.valueOf(queue.getOwner()).equals(session.getClientID()) : (owningSession == null || owningSession.getConnectionModel() == protocolConnection)))
            {
                throw body.getChannelException(AMQConstant.ALREADY_EXISTS, "Cannot declare queue('" + queueName + "'), "
                                                                           + "as exclusive queue with same name "
                                                                           + "declared on another client ID('"
                                                                           + queue.getOwner() + "') your clientID('" + session.getClientID() + "')");

            }
            else if(!body.getPassive() && queue.isAutoDelete() != body.getAutoDelete())
            {
                throw body.getChannelException(AMQConstant.ALREADY_EXISTS,
                                                  "Cannot re-declare queue '" + queue.getNameShortString() + "' with different auto-delete (was: "
                                                    + queue.isAutoDelete() + " requested " + body.getAutoDelete() + ")");
            }
            else if(!body.getPassive() && queue.isDurable() != body.getDurable())
            {
                throw body.getChannelException(AMQConstant.ALREADY_EXISTS,
                                                  "Cannot re-declare queue '" + queue.getNameShortString() + "' with different durability (was: "
                                                    + queue.isDurable() + " requested " + body.getDurable() + ")");
            }


            AMQChannel channel = protocolConnection.getChannel(channelId);

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

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

        if (!body.getNowait())
        {
            MethodRegistry methodRegistry = protocolConnection.getMethodRegistry();
            QueueDeclareOkBody responseBody =
                    methodRegistry.createQueueDeclareOkBody(queueName,
                                                            queue.getMessageCount(),
                                                            queue.getConsumerCount());
            protocolConnection.writeFrame(responseBody.generateFrame(channelId));

            _logger.info("Queue " + queueName + " declared successfully");
        }
    }
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    {
    }

    public void methodReceived(AMQStateManager stateManager, ExchangeDeclareBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();
        VirtualHost virtualHost = session.getVirtualHost();
        ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry();
        ExchangeFactory exchangeFactory = virtualHost.getExchangeFactory();

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

            if (exchange == null)
            {
                if(body.getPassive() && ((body.getType() == null) || body.getType().length() ==0))
                {
                    throw body.getChannelException(AMQConstant.NOT_FOUND, "Unknown exchange: " + body.getExchange());
                }
                else
                {
                    try
                    {
                        exchange = exchangeFactory.createExchange(body.getExchange() == null ? null : body.getExchange().intern(),
                                                                  body.getType() == null ? null : body.getType().intern(),
                                                                  body.getDurable(),
                                                                  body.getPassive(), body.getTicket());
                        exchangeRegistry.registerExchange(exchange);

                        if (exchange.isDurable())
                        {
                            virtualHost.getDurableConfigurationStore().createExchange(exchange);
                        }
                    }
                    catch(AMQUnknownExchangeType e)
                    {
                        throw body.getConnectionException(AMQConstant.COMMAND_INVALID, "Unknown exchange: " + body.getExchange(),e);
                    }
                }
            }
            else if (!exchange.getTypeShortString().equals(body.getType()))
            {

                throw new AMQConnectionException(AMQConstant.NOT_ALLOWED, "Attempt to redeclare exchange: " + body.getExchange() + " of type " + exchange.getTypeShortString() + " to " + body.getType() +".",body.getClazz(), body.getMethod(),body.getMajor(),body.getMinor(),null);
            }
        }
        if(!body.getNowait())
        {
            MethodRegistry methodRegistry = session.getMethodRegistry();
            AMQMethodBody responseBody = methodRegistry.createExchangeDeclareOkBody();
            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();

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

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

            //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())
                {
                    store.removeQueue(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();

       


        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.getExchangeRegistry().getExchange(exchangeName);
        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
                {

                    response = methodRegistry.createExchangeBoundOkBody(SPECIFIC_QUEUE_NOT_BOUND_WITH_RK,  // replyCode
                        new AMQShortString("Queue " + queueName + " not bound with routing key " +
                        body.getRoutingKey() + " to exchange " + exchangeName));  // 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, BasicCancelBody body, int channelId) throws AMQException
    {
        AMQProtocolSession session = stateManager.getProtocolSession();

        final AMQChannel channel = session.getChannel(channelId);


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

        if (_log.isDebugEnabled())
        {
            _log.debug("BasicCancel: for:" + body.getConsumerTag() +
                       " nowait:" + body.getNowait());
        }

        channel.unsubscribeConsumer(body.getConsumerTag());
        if (!body.getNowait())
        {
            MethodRegistry methodRegistry = session.getMethodRegistry();
            BasicCancelOkBody cancelOkBody = methodRegistry.createBasicCancelOkBody(body.getConsumerTag());
            session.writeFrame(cancelOkBody.generateFrame(channelId));
        }
    }
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    {
    }

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

        try
        {
            if(exchangeRegistry.getExchange(body.getExchange()) == null)
            {
                throw body.getChannelException(AMQConstant.NOT_FOUND, "No such exchange: " + body.getExchange());
            }
            exchangeRegistry.unregisterExchange(body.getExchange(), body.getIfUnused());

            ExchangeDeleteOkBody responseBody = session.getMethodRegistry().createExchangeDeleteOkBody();
                       
            session.writeFrame(responseBody.generateFrame(channelId));
        }
        catch (ExchangeInUseException e)
        {
            throw body.getChannelException(AMQConstant.IN_USE, "Exchange in use");
            // TODO: sort out consistent channel close mechanism that does all clean up etc.
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        return _instance;
    }

    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.resend(body.getRequeue());

        // 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))
        {
            MethodRegistry_0_9 methodRegistry = (MethodRegistry_0_9) session.getMethodRegistry();
            AMQMethodBody recoverOk = methodRegistry.createBasicRecoverSyncOkBody();
            session.writeFrame(recoverOk.generateFrame(channelId));

        }
        else if(session.getProtocolVersion().equals(ProtocolVersion.v0_91))
        {
            MethodRegistry_0_91 methodRegistry = (MethodRegistry_0_91) session.getMethodRegistry();
            AMQMethodBody recoverOk = methodRegistry.createBasicRecoverSyncOkBody();
            session.writeFrame(recoverOk.generateFrame(channelId));

        }

    }
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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);
        }
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        return new AMQShortString(Long.toString(System.currentTimeMillis()));
    }

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

        //ignore leading '/'
        String virtualHostName;
        if ((body.getVirtualHost() != null) && body.getVirtualHost().charAt(0) == '/')
        {
            virtualHostName = new StringBuilder(body.getVirtualHost().subSequence(1, body.getVirtualHost().length())).toString();
        }
        else
        {
            virtualHostName = body.getVirtualHost() == null ? null : String.valueOf(body.getVirtualHost());
        }

        VirtualHost virtualHost = stateManager.getVirtualHostRegistry().getVirtualHost(virtualHostName);

        if (virtualHost == null)
        {
            throw body.getConnectionException(AMQConstant.NOT_FOUND, "Unknown virtual host: '" + virtualHostName + "'");
        }
        else
        {
            // Check virtualhost access
            if (!virtualHost.getSecurityManager().accessVirtualhost(virtualHostName, session.getRemoteAddress()))
            {
                throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, "Permission denied: '" + virtualHost.getName() + "'");
            }

            session.setVirtualHost(virtualHost);

            // See Spec (0.8.2). Section  3.1.2 Virtual Hosts
            if (session.getContextKey() == null)
            {
                session.setContextKey(generateClientID());
            }           

            MethodRegistry methodRegistry = session.getMethodRegistry();
            AMQMethodBody responseBody =  methodRegistry.createConnectionOpenOkBody(body.getVirtualHost());           

            stateManager.changeState(AMQState.CONNECTION_OPEN);

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

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

        if (_logger.isInfoEnabled())
        {
            _logger.info("ConnectionClose received with reply code/reply text " + body.getReplyCode() + "/" +
                         body.getReplyText() + " for " + session);
        }
        try
        {
            session.closeSession();
        }
        catch (Exception e)
        {
            _logger.error("Error closing protocol session: " + e, e);
        }

        MethodRegistry methodRegistry = session.getMethodRegistry();
        ConnectionCloseOkBody responseBody = methodRegistry.createConnectionCloseOkBody();
        session.writeFrame(responseBody.generateFrame(channelId));

        session.closeProtocolSession();

    }
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Related Classes of org.apache.qpid.server.protocol.AMQProtocolSession$Task

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