I am calling ServiceBusClient.DisposeAsync for disposing the client object. However, there are processors created from this object which starts throwing an exception saying the object is disposed and it cannot listen anymore. Is there any way to trigger auto closure of service processors when dispose is called? Or, should I get hold of all the processors created from this client and then stop the listening?

CodePudding user response：

The short answer is no; there is intentionally no "stop processing on dispose" behavior for the processor. Your application is responsible for calling StopProcessingAsync.

More context:

The ServiceBusClient owns the connection shared by all child objects spawned from it. Closing/disposing the client will effectively dispose its children. If you attempt to invoke a service operation at that point, an error is triggered.

In the case of a processor, the application holds responsibility for calling start and stop. Because the processor is designed to be resilient, its goal is to continue to recover in the face of failures and keep trying to make forward progress until stop is called.

While it's true that the processor does understand that a disposed set of network resources is terminal, it has no way to understand your intent. Did your application close the ServiceBusClient with the intent that it would stop the associated processors? Did it close the client without realizing that there were processors still running?

Because the intent is ambiguous, we have to take the safer path. The processors will continue to run because they'll surface the exceptions to your application's error handler - which ensures that your application is made aware that there is an issue and allows you to respond in the way best for your application's needs.

On the other hand, if processing just stopped and you did not intend for that to happen, it would be much harder for your application to detect and remediate. You would just know that the processor stopped doing its job and there's a good chance that you wouldn't be able to understand why without a good deal of investigation.