Make deadletterName optional

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

@@ -66,16 +66,16 @@ namespace Volo.Abp.EventBus.RabbitMq
             Consumer = MessageConsumerFactory.Create(
                 new ExchangeDeclareConfiguration(
                     AbpRabbitMqEventBusOptions.ExchangeName,
-                    AbpRabbitMqEventBusOptions.ExchangeName + suffix,
                     type: "direct",
-                    durable: true
+                    durable: true,
+                    deadLetterExchangeName: AbpRabbitMqEventBusOptions.ExchangeName + suffix
                 ),
                 new QueueDeclareConfiguration(
                     AbpRabbitMqEventBusOptions.ClientName,
-                    AbpEventBusOptions.DeadLetterName ?? AbpRabbitMqEventBusOptions.ClientName + suffix,
                     durable: true,
                     exclusive: false,
-                    autoDelete: false
+                    autoDelete: false,
+                    AbpEventBusOptions.DeadLetterName ?? AbpRabbitMqEventBusOptions.ClientName + suffix
                 ),
                 AbpRabbitMqEventBusOptions.ConnectionName
             );

framework/src/Volo.Abp.RabbitMQ/Volo/Abp/RabbitMQ/ExchangeDeclareConfiguration.cs

@@ -18,10 +18,10 @@ namespace Volo.Abp.RabbitMQ
 
         public ExchangeDeclareConfiguration(
             string exchangeName,
-            string deadLetterExchangeName,
             string type,
             bool durable = false,
-            bool autoDelete = false)
+            bool autoDelete = false,
+            string deadLetterExchangeName = null)
         {
             ExchangeName = exchangeName;
             DeadLetterExchangeName = deadLetterExchangeName;

framework/src/Volo.Abp.RabbitMQ/Volo/Abp/RabbitMQ/QueueDeclareConfiguration.cs

@@ -20,18 +20,17 @@ namespace Volo.Abp.RabbitMQ
 
         public QueueDeclareConfiguration(
             [NotNull] string queueName,
-            string deadLetterQueueName,
             bool durable = true,
             bool exclusive = false,
             bool autoDelete = false,
-            Dictionary<string, object> arguments = null)
+            string deadLetterQueueName = null)
         {
             QueueName = queueName;
             DeadLetterQueueName = deadLetterQueueName;
             Durable = durable;
             Exclusive = exclusive;
             AutoDelete = autoDelete;
-            Arguments = arguments ?? new Dictionary<string, object>();
+            Arguments = new Dictionary<string, object>();
         }
 
         public virtual QueueDeclareOk Declare(IModel channel)