.net 核心后台应用程序中每个侦听器的单独控制器实例的 AddTransient 或 AddScoped

Question

我在后台服务应用程序中托管了一个 asp.net kesterl，并且运行在不同端口上的多个实例由一些特定对象控制。我想要的是，如果当控制器出现故障时，应该使用我在初始初始化中传递的参数。每个监听器的控制器实例。出于测试目的，我尝试了 Singleton，但它会产生单个实例。现在我正在检查我应该为我的场景使用哪种实例（AddScoped 或 AddTransient）以及我如何在此期间注入参数。

我当前的代码库看起来像

    internal static IHostBuilder CreateHostBuilder(string listener, CommunicationChannelElement communicationChannelElement)
            {
//here i want how i can use addScoped or AddTransient with communication paramter
                return Host.CreateDefaultBuilder().ConfigureServices(services => services.AddSingleton(communicationChannelElement)).
                ConfigureWebHostDefaults(webBuilder => webBuilder.UseUrls(listener).
                UseStartup<Startup>());
            }
            
            
            
            
            private void StartBackGroundWebListener(CommunicationChannelElement communicationChannelElement)
            {            
               CreateHostBuilder(_objSettings, communicationChannelElement).Build().Run();//separate thread  using task parallel library          
            }
            
            
            public void StartAll()
            {
                    StartBackGroundWebListener("http://10.1.2.3:0001",communicationChannelElement1);
            
                    StartBackGroundWebListener("http://10.1.2.3:0002",communicationChannelElement2);
            
                    StartBackGroundWebListener("http://10.1.2.3:0003",communicationChannelElement3);
            }
            
            
            
            public class CallBackController : ControllerBase
            {        
    
                    private readonly CommunicationChannelElement CommunicationChannelElement;
    
                    public CallBackController(CommunicationChannelElement communicationChannelElement)
                    {
                        CommunicationChannelElement = communicationChannelElement;
                    }               
                ... 
                    
            }

Answer 1

已通过以下代码实现

public class CallBackController : ControllerBase
    {
        private readonly CommunicationChannelElement CommunicationChannelElement;
        public CallBackController(IServiceProvider serviceProvider)
        {
            CommunicationChannelElement = serviceProvider.GetService<CommunicationChannelElement>();
        }
        
        ....
}
  
  
  internal static IHostBuilder CreateHostBuilder(string listner, CommunicationChannelElement communicationChannelElement)
  {
            return Host.CreateDefaultBuilder().ConfigureServices(services => services.AddTransient(ctx => communicationChannelElement)).
              ConfigureWebHostDefaults(webBuilder => webBuilder.UseUrls(listner).UseStartup<ComvivaStartup>());

            //return Host.CreateDefaultBuilder().ConfigureServices(services => services.AddSingleton(communicationChannelElement)).
            //  ConfigureWebHostDefaults(webBuilder => webBuilder.UseUrls(listner).UseStartup<ComvivaStartup>());
  }

如果需要任何改进，请告诉我

.net 核心后台应用程序中每个侦听器的单独控制器实例的 AddTransient 或 AddScoped

AddTransient or AddScoped for separate controller isntance per lisntener in .net core back ground application

c#

.net-core-3.1