Improve error handling in Service Bus listener (#4)

* Improve error handling in Service Bus listener

Enhanced the ProcessErrorAsync handler to log specific warnings for ServiceBusException cases such as MessagingEntityNotFound and ServiceCommunicationProblem, providing more granular logging and better diagnostics.

Author: KrastyTC

AzureServiceBusQueueListener.cs

@@ -121,10 +121,28 @@ await retryPolicy.ExecuteAsync(async () =>
 
         _processor.ProcessErrorAsync += args =>
         {
-            _logger.LogError(args.Exception, "Message handler error");
+            if (args.Exception is ServiceBusException sbex)
+            {
+                if (sbex.Reason == ServiceBusFailureReason.MessagingEntityNotFound)
+                {
+                    _logger.LogWarning("Entity not found while processing.");
+                }
+                else if (sbex.Reason == ServiceBusFailureReason.ServiceCommunicationProblem)
+                {
+                    _logger.LogWarning("Service communication problem - emulator not ready.");
+                }
+                else
+                {
+                    _logger.LogWarning("Service Bus error: {Reason}", sbex.Reason);
+                }
+            }
+            else
+            {
+                _logger.LogError(args.Exception, "Message handler error");
+            }
+
             return Task.CompletedTask;
         };
-
         await _processor.StartProcessingAsync(cancellationToken);
     }
 

DotQueue.csproj

@@ -6,7 +6,7 @@
     <Nullable>enable</Nullable>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageId>DotQueue</PackageId>
-    <Version>1.0.0</Version>
+    <Version>1.0.1</Version>
     <Authors>Alexander Kulyabin</Authors>
     <Company>Zionet</Company>
     <Description>Generic queue listener</Description>