如何在死信中的 Azure 服务总线 java function 中设置自定义死信原因？

Question

我正在尝试创建 Azure 服务总线触发函数（java）。 当有任何异常时，将消息放入死信队列，死信原因为 MaxDeliveryCountExceeded。

@FunctionName("testFunction")
public void run(@ServiceBusQueueTrigger(name = "message", queueName = "testQueue", connection = "ConnectionString") String message,
            final ServiceBusExecutionContext context) {
        try{
            ..... some functionality
        }catch(Exception e){
        throw e;
    }
}

使用 java Azure function 服务总线触发器时有什么方法可以自定义死信原因和死信错误描述？

Answer 1

使用 java Azure function 服务总线触发器时有什么方法可以自定义死信原因和死信错误描述？

你可以试试下面的代码：

public List<DeadLetterQueueMessage> MonitorDeadLetterQueue(string TopicName)
{
        List<DeadLetterQueueMessage> messagesFromDeadLetterQueue = new List<DeadLetterQueueMessage>();
        ServiceBusConnectionStringBuilder builder = new ServiceBusConnectionStringBuilder(AzureBusEndPointReceiveConnectionString);
        MessagingFactory factory = MessagingFactory.CreateFromConnectionString(builder.ToString());
        MessageReceiver deadLetterClient = factory.CreateMessageReceiver(SubscriptionClient.FormatDeadLetterPath(TopicName, AzureBusSubscriptionName));
        bool queueStillHasMessages = true;
        while (queueStillHasMessages)
{
                BrokeredMessage msg = deadLetterClient.Receive();
                if (msg != null)
{
                     DeadLetterQueueMessage deadLetterQueueMessage = new DeadLetterQueueMessage
{
JSONPayload = new StreamReader(msg.GetBody<Stream>(), Encoding.UTF8).ReadToEnd(),
MessageId = msg.MessageId,
DeliveryCount = msg.DeliveryCount,
DeadLetterErrorDescription = msg.Properties[“DeadLetterErrorDescription“].ToString(),
DeadLetterReason = msg.Properties[“DeadLetterReason“].ToString()
};
messagesFromDeadLetterQueue.Add(deadLetterQueueMessage);
msg.Complete();
}
               else
{
queueStillHasMessages = false;
}
}
        return messagesFromDeadLetterQueue;
}

参考： 使用 Azure 服务总线死信队列