Question

我正在尝试使用NMS的新延迟投放功能。

schedulerSupport属性已在配置文件中设置，我使用以下代码尝试延迟传递消息，直到达到用户选择的日期/时间。

代码（目前似乎不起作用）如下：

var timeDelay = dateTimePicker.Value.Subtract(DateTime.Now).TotalMilliseconds;     
var message = topicPublisher.CreateTextMessage();
message.Properties["AMQ_SCHEDULED_DELAY"] = timeDelay;
message.Text = CM.ToXMLString();

topicPublisher.Send(message);

你能指出这个例子中可能不正确的内容吗？

非常感谢！

Answer 1

我从提供的代码中看不出任何明显的东西。

您可以尝试调高代理中的日志记录，以查看调度程序是否收到消息并且值是否正确，这也可以确认您确实启用了调度程序支持。您还可以尝试创建一个类似于确定NMS客户端行为是否正常的小型Java程序。

我假设你有一个消费者正在运行并且它的连接对象已经启动了吗？

此致添

www.fusesource.com

Answer 2

感谢你对蒂姆的帮助。我找到了问题的原因。我的反应稍有延迟 - 我不得不专注于其他工作领域，但我今天已经设法回到这一点。

问题是C＃“。TotalMilliseconds”函数 - 这会返回一个小数的total.partial毫秒值，很明显ActiveMQ不喜欢它。

现在我将此毫秒值转换为整数，延迟消息传递正在按需运行。

以下日志摘录：

2011-03-07 10:14:44,186 | DEBUG | quasar adding destination: topic://REDACTED | org.apache.activemq.broker.region.AbstractRegion | ActiveMQ Transport: tcp:///REDACTED:50161
2011-03-07 10:14:44,576 | DEBUG | Error occured while processing async command: ActiveMQTextMessage {commandId = 4, responseRequired = false, messageId = ID:HL003323-50159-634350896828327757-0:0:1:1:1, originalDestination = null, originalTransactionId = null, producerId = ID:HL003323-50159-634350896828327757-0:0:1:1, destination = topic://REDACTED, transactionId = null, expiration = 0, timestamp = 1299492884437, arrival = 0, brokerInTime = 0, brokerOutTime = 0, correlationId = null, replyTo = null, persistent = false, type = null, priority = 4, groupID = null, groupSequence = 0, targetConsumerId = null, compressed = false, userID = null, content = null, marshalledProperties = org.apache.activemq.util.ByteSequence@1ae0436, dataStructure = null, redeliveryCounter = 0, size = 0, properties = {targetModule=HL.Services.Blackbird.OrderManager, AMQ_SCHEDULED_DELAY=53564.4233}, readOnlyProperties = false, readOnlyBody = false, droppable = false, text = <?xml version="1.0" encoding="utf-16"?>
<Com...mandMessage>}, exception: java.lang.NullPointerException | org.apache.activemq.broker.TransportConnection.Service | ActiveMQ Transport: tcp:///REDACTED:50161
java.lang.NullPointerException
        at org.apache.activemq.broker.scheduler.SchedulerBroker.send(SchedulerBroker.java:179)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
        at org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:96)
        at org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:227)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
        at org.apache.activemq.security.AuthorizationBroker.send(AuthorizationBroker.java:192)
        at org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:135)
        at org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:462)
        at org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:677)
        at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:311)
        at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185)
        at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)
        at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
        at org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:228)
        at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
        at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:220)
        at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:202)
        at java.lang.Thread.run(Thread.java:595)
2011-03-07 10:14:44,577 | WARN  | Async error occurred: java.lang.NullPointerException | org.apache.activemq.broker.TransportConnection.Service | ActiveMQ Transport: tcp:///REDACTED:50161
java.lang.NullPointerException
        at org.apache.activemq.broker.scheduler.SchedulerBroker.send(SchedulerBroker.java:179)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
        at org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:96)
        at org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:227)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:129)
        at org.apache.activemq.security.AuthorizationBroker.send(AuthorizationBroker.java:192)
        at org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:135)
        at org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:462)
        at org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:677)
        at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:311)
        at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185)
        at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)
        at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
        at org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:228)
        at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
        at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:220)
        at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:202)
        at java.lang.Thread.run(Thread.java:595)

使用ActiveMQ 5.3和NMS延迟交付

2 个答案: