try to refactor Kafka and add supports for RabbitMQ ...

Constants/XEventServiceConstants.cs

@@ -9,6 +9,9 @@ namespace xEventService.Constants
         //
         // Defaults ...
         public const string XDefaultTopic = "XSaherelm";  
-        public const string XDefaultConsumerGroup = "XSaherElmGroup";      
+        public const string XDefaultConsumerGroup = "XSaherElmGroup";  
+
+        //
+        public const string XWildcard = "*";    
     }
 }

Constants/XRabbitMQExchangeType.cs

@@ -0,0 +1,37 @@
+using xExceptions.Attributes;
+
+namespace xEventService.Constants
+{
+    /// <summary>
+    /// Available RabbitMQ Exchange Types ...
+    /// </summary>
+    public struct XRabbitMQExchangeTypes
+    {
+        public const string None = "none";
+        public const string Direct = "direct";
+        public const string Fanout = "fanout";
+        public const string Topic = "topic";
+        public const string Headers = "headers";
+    }
+
+    /// <summary>
+    /// RabbitMQ Exchange Type Enum ...
+    /// </summary>
+    public enum XRabbitMQExchangeType
+    {
+        [StringValue(XRabbitMQExchangeTypes.None)]
+        None,
+
+        [StringValue(XRabbitMQExchangeTypes.Direct)]
+        Direct,
+
+        [StringValue(XRabbitMQExchangeTypes.Fanout)]
+        Fanout,
+
+        [StringValue(XRabbitMQExchangeTypes.Topic)]
+        Topic,
+
+        [StringValue(XRabbitMQExchangeTypes.Headers)]
+        Headers,
+    }
+}