Expose `MessageCount` values in paged namespace queries

Query/Question

It looks that the MessageCount values are available at the client-side when GetQueueAsync() is executed via Azure ServiceBus client.

Why is this not a Bug or a feature Request? This is a performance improvement. Currently MessageCount value for a queue is accessible via property on QueueRuntimeInfo class.

When querying for multiple MessageCount values in the namespace at once there are 1+n requests needed.

First, one to get a list of available queues in the namespace via

managementClient.GetQueuesAsync()

and later, n calls for each queue to get the QueueRuntimeInfo:

managementClient.GetQueueRuntimeInfoAsync()

Setup (please complete the following information if applicable):

• OS: [e.g. iOS]
• IDE : [e.g. IntelliJ]
• Version of the Library used

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[nemakam]

@tmasternak , sorry, but this needs further discussion internally and I’d like you to hold off on a new PR creation for this for now.

[tmasternak]

@nemakam I’ve opened a PR which proposes adding a new method to ManagementClient. I started off adding the MessageCount to the QueueDescription but realized that it’s designed with library client modifications in mind i.e. all property setters are public. Adding a new MessageCount property could lead to confusion as it’s a read-only value contrary to all the other values.

As a result, I’ve added a dedicated method similar to GetQueuesAsync that returns queue runtime information in pages. Please have a look.