重构代码并抽取基础构建库

libraries/HelloShop.EventBus.RabbitMQ/RabbitMQEventBusExtensions.cs

@@ -0,0 +1,36 @@
+// Copyright (c) HelloShop Corporation. All rights reserved.
+// See the license file in the project root for more information.
+
+using HelloShop.EventBus.Abstractions;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace HelloShop.EventBus.RabbitMQ
+{
+    public static class RabbitMQEventBusExtensions
+    {
+        private const string DefaultSectionName = "RabbitMQEventBus";
+
+        public static IEventBusBuilder AddRabbitMqEventBus(this IHostApplicationBuilder builder, string connectionName, string sectionName = DefaultSectionName)
+        {
+            ArgumentNullException.ThrowIfNull(builder);
+
+            builder.AddRabbitMQClient(connectionName, configureConnectionFactory: factory =>
+            {
+                factory.DispatchConsumersAsync = true;
+            });
+
+            builder.Services.Configure<EventBusOptions>(builder.Configuration.GetSection(sectionName));
+
+            builder.Services.AddSingleton<IEventBus, RabbitMQEventBus>();
+            builder.Services.AddSingleton<IHostedService>(sp => (RabbitMQEventBus)sp.GetRequiredService<IEventBus>());
+
+            return new EventBusBuilder(builder.Services);
+        }
+
+        private class EventBusBuilder(IServiceCollection services) : IEventBusBuilder
+        {
+            public IServiceCollection Services => services;
+        }
+    }
+}