How to retrieve messages from DLQ and resubmit them in ascending order based on EnqueuedTime

Question

Hello,

We are trying to build a mechanism that reads all the messages from a subscription deadletter queue and resubmit them to the parent topic in the same ordered that they were initially enqueued.
Is this possible without sessions? I was thinking to use the EnqueuedTime but I have the following problem:

• RServiceBusReceiver.ReceiveMessagesAsync does not return the maximum number present in DLQ, so it needs to be called multiple times to eventually get all the messages. Because of this, it is not possible to build a collection and then order it ascending by EnqueuedTime. Not completing a message will leave the message in the queue, therefore the chances to be picked up again are high, ending up in a collection with duplicates, or with redundant calls to ReceiveMessagesAsync.

Do you have any suggestions for an ordered resubmit?

Answer 1

Hello,

Please find the example to process messages from dead letter queue as below,

https://github.com/Azure/azure-sdk-for-java/blob/main/sdk/servicebus/azure-messaging-servicebus/src/samples/java/com/azure/messaging/servicebus/DeadletterQueueSample.java

Please let us know if it helps.

Thanks!