Fix suggestions

Author: Pavlo Korobov

src/providers/WorkflowCore.QueueProviders.RabbitMQ/ServiceCollectionExtensions.cs

@@ -41,13 +41,15 @@ public static WorkflowOptions UseRabbitMQ(this WorkflowOptions options, RabbitMq
             if (rabbitMqConnectionFactory == null) throw new ArgumentNullException(nameof(rabbitMqConnectionFactory));
 
             options.Services.AddSingleton(rabbitMqConnectionFactory);
-            options.Services.TryAddTransient<IRabbitMqQueueNameProvider, DefaultRabbitMqQueueNameProvider>();
+            options.Services.TryAddSingleton<IRabbitMqQueueNameProvider, DefaultRabbitMqQueueNameProvider>();
             options.UseQueueProvider(RabbitMqQueueProviderFactory);
 
             return options;
         }
 
         private static IQueueProvider RabbitMqQueueProviderFactory(IServiceProvider sp)
-            => new RabbitMQProvider(sp);
+            => new RabbitMQProvider(sp,
+                sp.GetRequiredService<IRabbitMqQueueNameProvider>(),
+                sp.GetRequiredService<RabbitMqConnectionFactory>());
     }
 }

src/providers/WorkflowCore.QueueProviders.RabbitMQ/Services/RabbitMQProvider.cs

@@ -26,11 +26,13 @@ public class RabbitMQProvider : IQueueProvider
 
         public bool IsDequeueBlocking => false;
 
-        public RabbitMQProvider(IServiceProvider serviceProvider)
+        public RabbitMQProvider(IServiceProvider serviceProvider,
+            IRabbitMqQueueNameProvider queueNameProvider,
+            RabbitMqConnectionFactory connectionFactory)
         {
             _serviceProvider = serviceProvider;
-            _queueNameProvider = _serviceProvider.GetRequiredService<IRabbitMqQueueNameProvider>();
-            _rabbitMqConnectionFactory = _serviceProvider.GetRequiredService<RabbitMqConnectionFactory>();
+            _queueNameProvider = queueNameProvider;
+            _rabbitMqConnectionFactory = connectionFactory;
         }
 
         public async Task QueueWork(string id, QueueType queue)

src/providers/WorkflowCore.QueueProviders.RabbitMQ/WorkflowCore.QueueProviders.RabbitMQ.csproj

@@ -19,6 +19,7 @@
     <Description>Queue provider for Workflow-core using RabbitMQ</Description>
     <AssemblyVersion>2.0.0.0</AssemblyVersion>
     <FileVersion>2.0.0.0</FileVersion>
+    <PackageVersion>2.1.0</PackageVersion>
   </PropertyGroup>
 
   <ItemGroup>