Accessing ASP.NET Core DI Container From Static Factory Class

Question

I\'ve created an ASP.NET Core MVC/WebApi site that has a RabbitMQ subscriber based off James Still\'s blog article Real-World PubSub Messaging with RabbitMQ.

In his arti

Answer 1

Here is my opinion about your case:

If possible i would send resolved service as a parameter

public static IMessageProcessor Create(string messageType, IIpSetService ipService)
{
    //
}

Otherwise service lifetime would be important.

If service is singleton i would just set dependency on configure method:

 // configure method
public IApplicationBuilder Configure(IApplicationBuilder app)
{
    var ipService = app.ApplicationServices.GetService();
    MessageHandlerFactory.IIpSetService = ipService;
}

// static class
public static IIpSetService IpSetService;

public static IMessageProcessor Create(string messageType)
{
    // use IpSetService
}

If service lifetime is scoped i would use HttpContextAccessor:

//Startup.cs
public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton();
}

public IApplicationBuilder Configure(IApplicationBuilder app)
{
    var httpContextAccessor= app.ApplicationServices.GetService();
    MessageHandlerFactory.HttpContextAccessor = httpContextAccessor;
}

// static class
public static IHttpContextAccessor HttpContextAccessor;

public static IMessageProcessor Create(string messageType)
{
    var ipSetService = HttpContextAccessor.HttpContext.RequestServices.GetService();
    // use it
}