add Dispose() menthod in interface

src/BuildingBlocks/EventBus/EventBus/Abstractions/IEventBus.cs

@@ -19,5 +19,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions
         void Unsubscribe<T, TH>()
             where TH : IIntegrationEventHandler<T>
             where T : IntegrationEvent;
+
+        void Dispose();
     }
 }

src/BuildingBlocks/EventBus/EventBusRabbitMQ/EventBusRabbitMQ.cs

@@ -4,6 +4,7 @@ using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Extensions;
 using Microsoft.Extensions.Logging;
+using Azure.Messaging.ServiceBus;
 using Polly;
 using Polly.Retry;
 using RabbitMQ.Client;
@@ -27,6 +28,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
         private readonly IEventBusSubscriptionsManager _subsManager;
         private readonly ILifetimeScope _autofac;
         private readonly int _retryCount;
+        private readonly ServiceBusProcessor _processor;
 
         private IModel _consumerChannel;
         private string _queueName;
@@ -42,6 +44,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
             _autofac = autofac;
             _retryCount = retryCount;
             _subsManager.OnEventRemoved += SubsManager_OnEventRemoved;
+            this._processor = EventBusServiceBus.EventBusServiceBus.DeliverProcessor();
         }
 
         private void SubsManager_OnEventRemoved(object sender, string eventName)
@@ -178,6 +181,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
             }
 
             _subsManager.Clear();
+            _processor.CloseAsync().GetAwaiter().GetResult();
         }
 
         private void StartBasicConsume()

src/BuildingBlocks/EventBus/EventBusRabbitMQ/EventBusRabbitMQ.csproj

@@ -7,6 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Autofac" Version="6.1.0" />
+    <PackageReference Include="Azure.Messaging.ServiceBus" Version="7.2.0" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />    
     <PackageReference Include="Polly" Version="7.2.1" />
@@ -14,6 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\EventBusServiceBus\EventBusServiceBus.csproj" />
     <ProjectReference Include="..\EventBus\EventBus.csproj" />
   </ItemGroup>
 

src/BuildingBlocks/EventBus/EventBusServiceBus/EventBusServiceBus.cs

@@ -20,7 +20,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
         private readonly string _topicName;
         private readonly string _subscriptionName;
         private ServiceBusSender _sender;
-        private ServiceBusProcessor _processor;
+        private static ServiceBusProcessor _processor;
         private readonly string AUTOFAC_SCOPE_NAME = "eshop_event_bus";
         private const string INTEGRATION_EVENT_SUFFIX = "IntegrationEvent";
 
@@ -34,6 +34,8 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
             _topicName = topicName;
             _subscriptionName = subscriptionName;
             _sender = _serviceBusPersisterConnection.TopicClient.CreateSender(_topicName);
+            ServiceBusProcessorOptions options = new ServiceBusProcessorOptions { MaxConcurrentCalls = 10, AutoCompleteMessages = false };
+            _processor = _serviceBusPersisterConnection.TopicClient.CreateProcessor(_topicName, options);
 
             RemoveDefaultRule();
             RegisterSubscriptionClientMessageHandlerAsync().GetAwaiter().GetResult();
@@ -126,14 +128,17 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
         public void Dispose()
         {
             _subsManager.Clear();
-            this._processor.CloseAsync().GetAwaiter().GetResult();
+            _processor.CloseAsync().GetAwaiter().GetResult();
+        }
+
+        public static ServiceBusProcessor DeliverProcessor()
+        {
+            return _processor;
         }
 
         private async Task RegisterSubscriptionClientMessageHandlerAsync()
         {
-            ServiceBusProcessorOptions options = new ServiceBusProcessorOptions { MaxConcurrentCalls = 10, AutoCompleteMessages = false };
+            _processor.ProcessMessageAsync +=
-            this._processor = _serviceBusPersisterConnection.TopicClient.CreateProcessor(_topicName, options);
-            this._processor.ProcessMessageAsync +=
                 async (args) =>
                 {
                     var eventName = $"{args.Message.Subject}{INTEGRATION_EVENT_SUFFIX}";
@@ -146,8 +151,8 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
                     }
                 };
 
-            this._processor.ProcessErrorAsync += ErrorHandler;
+            _processor.ProcessErrorAsync += ErrorHandler;
-            await this._processor.StartProcessingAsync();
+            await _processor.StartProcessingAsync();
         }
 
         private Task ErrorHandler(ProcessErrorEventArgs args)