SendOnly endpoint (hosted in Azure WebRole) and DelayedMessagePoller exceptions

[Geert Depickere]

I have an endpoint (hosted in a Azure WebRole) that is configured as a send-only endpoint (using configuration.SendOnly();), and used Azure Storage queues as transport.

I think that such an read-only endpoint should not be polling for delayed messages? However I see following traces when starting the WebRole in the local emulator:

2017-08-22 16:19:27.122 DEBUG NServiceBus.Azure.Transports.WindowsAzureStorageQueues.DelayDelivery.DelayedMessagesPoller Polling for delayed messages at 22/08/2017 14:19:27 +00:00.

Exception thrown: 'Microsoft.WindowsAzure.Storage.StorageException' in Microsoft.WindowsAzure.Storage.dll

Exception thrown: 'Microsoft.WindowsAzure.Storage.StorageException' in mscorlib.dll

Can someone explain this behavior?

Thanks,

Geert.

[Sean Feldman]

Hi Geert,

This sounds like a bug. I've raised an issue on GitHub (https://github.com/Particular/NServiceBus.AzureStorageQueues/issues/248).

Please subscribe to the issue to get updates.

Sean

[Geert Depickere]

H Sean,

I read your comments on the GitHub case. Thanks for explaining this.

However: 

As you know, polling Azure storage results in extra costs...

Is there an option to disable this polling when I know that I am not using delayed message sending from my send-only endpoint? 

Geert.

[Sean Feldman]

Hi Geert,

For the cost concern, I've raised a feature request here. 

It makes sense, especially when you know when your endpoints don't use delayed delivery at all.

Sean

[Geert Depickere]

Thanks Sean.

[Sean Feldman]

Hi Geert,

This feature will be enabled in the upcoming version 8.0.0 of the ASQ transport.

Please see details in the issue https://github.com/Particular/NServiceBus.AzureStorageQueues/issues/250

You can try the beta to confirm this is what you wanted by installing ASQ 8.0.0-beta0002 on NuGet (https://www.nuget.org/packages/NServiceBus.Azure.Transports.WindowsAzureStorageQueues/8.0.0-beta0002)

Thank you,

Sean