Azure Service Bus - Message Peek on Subscription

Question

I have a listen access on Topic/Subscription for Azure Service Bus. Is there a way to verify if a subscription has a message and how many messages are there. I don't have manage connection string and I think I cannot run Service Bus Explorer. I don't intent to read the message out of the subscription.

Answer 1

I don't intent to read the message out of the subscription.

The short answer is no. Manage access is required to get the topic or subscription message information.

If you want to get the subscription message count, you could have a try following 2 ways:

1.You have manage access, you could use the following demo code to do that.

var topicName = "topic1";
var subscriptionName = "subscription";
var address = "sb://xxx.servicebus.windows.net/"; //base address of namespace you are connecting to.
MessagingFactorySettings MsgFactorySettings = new MessagingFactorySettings
 {
     TokenProvider = TokenProvider.CreateSharedAccessSignatureTokenProvider("SharedAccessKeyName", "xxxxxx"),
 };
MessagingFactory msgFactory = MessagingFactory.Create(address, MsgFactorySettings);
NamespaceManager manager = new NamespaceManager(msgFactory.Address,msgFactory.GetSettings().TokenProvider);
var subscriptioncDescription = manager.GetSubscription(topicName, subscriptionName);
var count = subscriptioncDescription.MessageCountDetails.ActiveMessageCount;

2.Use Azure Microsoft.Azure.Management.ServiceBus.Fluent sdk. You need to registry Azure AD application and assign corresponding role it. For more information please refer to another SO thread.

 var subscriptionId = "Azure subscriptionId";
 var resourceGroupName = "rgName";
 var nameSpace = "tomtestsb";
 var topicName = "topic1";
 var subscriptionName = "subscription";
 var credentials = SdkContext.AzureCredentialsFactory.FromFile(@"D:\Tom\Documents\azureCred.txt");
 var client = new ServiceBusManagementClient(credentials);
 client.SubscriptionId = subscriptionId;
 var topic = client.Topics.GetAsync(resourceGroupName, nameSpace, topicName).Result;
 var topicMessagecount = topic.CountDetails.ActiveMessageCount;
 var subscription = client.Subscriptions.GetAsync(resourceGroupName, nameSpace, topicName, subscriptionName).Result;
 var subscriptionMessagecount = subscription.CountDetails.ActiveMessageCount;