Apache.NMS.ActiveMQ.MessageProducer.OnProducerAck C# (CSharp) Method

        internal void OnProducerAck(ProducerAck ack)
        {
            Tracer.Debug("Received ProducerAck for Message of Size = {" + ack.Size + "}" );

            if(this.usage != null)
            {
                this.usage.DecreaseUsage( ack.Size );
            }
        }

        /// <summary>
        /// Handle incoming commands
        /// </summary>
        /// <param name="commandTransport">An ITransport</param>
        /// <param name="command">A  Command</param>
        protected void OnCommand(ITransport commandTransport, Command command)
        {
            if (command is MessageDispatch)
            {
                DispatchMessage((MessageDispatch)command);
            }
            else if (command is KeepAliveInfo)
            {
                OnKeepAliveCommand(commandTransport, (KeepAliveInfo)command);
            }
            else if (command is WireFormatInfo)
            {
                this.brokerWireFormatInfo = (WireFormatInfo)command;
            }
            else if (command is BrokerInfo)
            {
                this.brokerInfo = (BrokerInfo)command;
            }
            else if (command is ShutdownInfo)
            {
                if (!closing && !closed)
                {
                    OnException(commandTransport, new NMSException("Broker closed this connection."));
                }
            }
            else if (command is ProducerAck)
            {
                ProducerAck ack = (ProducerAck)command;
                if (ack != null && ack.ProducerId != null)
                {
                    MessageProducer producer = (MessageProducer)producers[ack.ProducerId];
                    if (producer != null)
                    {
                        producer.OnProducerAck(ack);
                    }
                }
            }
            else if (command is ConnectionError)
            {
                if (!closing && !closed)
                {
                    ConnectionError connectionError = (ConnectionError)command;
                    BrokerError     brokerError     = connectionError.Exception;
                    string          message         = "Broker connection error.";
                    string          cause           = "";

                    if (null != brokerError)
                    {
                        message = brokerError.Message;
                        if (null != brokerError.Cause)
                        {
                            cause = brokerError.Cause.Message;
                        }
                    }

                    OnException(commandTransport, new NMSConnectionException(message, cause));
                }
            }
            else
            {
                Tracer.Error("Unknown command: " + command);
            }
        }