Update RabbitMqDistributedEventBus

framework/src/Volo.Abp.EventBus.RabbitMQ/Volo/Abp/EventBus/RabbitMq/RabbitMqDistributedEventBus.cs

@@ -86,8 +86,6 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, ISingletonDe
         Consumer.OnMessageReceived(ProcessEventAsync);
 
         SubscribeHandlers(AbpDistributedEventBusOptions.Handlers);
-
-        
     }
 
     private async Task ProcessEventAsync(IModel channel, BasicDeliverEventArgs ea)
@@ -314,12 +312,20 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, ISingletonDe
             return;
         }
 
+        try
+        {
+            channel.ExchangeDeclarePassive(AbpRabbitMqEventBusOptions.ExchangeName);
+        }
+        catch (Exception)
+        {
             channel.ExchangeDeclare(
                 AbpRabbitMqEventBusOptions.ExchangeName,
                 "direct",
                 durable: true
             );
         }
+        _exchangeCreated = true;
+    }
 
     private void SetEventMessageHeaders(IBasicProperties properties, Dictionary<string, object> headersArguments)
     {