Find list of Subscriptions from azure Topic

Question

Is it possible to find a list of Subscriptions on a Service Bus Topic?

I want to be able to find the list and then loop through it.

Answer 1

If you're using C#, you can do something like the following:

private void EnumerateTopics()
{
    var namespaceManager = NamespaceManager.CreateFromConnectionString(c_ConnectionString);
    const string topicName = "testtopic";

    var subscriptions = namespaceManager.GetSubscriptions(topicName);

    // do stuff with subscriptions
}

That's obviously all synchronous, but there are corresponding async versions of the calls (GetSubscriptionsAsync, for example). The subscriptions object is an IEnumerable<SubscriptionDescription>, which'll let you get at any other aspect of the subscription that you might want to use.

First you'll need to:

1. add the corresponding "Windows Azure Service Bus" NuGet package to your solution
2. add a reference to "Microsoft.ServiceBus" to the corresponding csproj
3. and obviously drop the using statement using Microsoft.ServiceBus; in your .cs file

Your connection string will be exactly what you pull from the Azure Management Portal, roughly along the lines of: Endpoint=sb://[namespacename].servicebus.windows.net/;SharedSecretIssuer=owner;SharedSecretValue=[key]

There are similarly easy-to-use libraries available for other languages too.