GracefullShutdown

Asp.net core middleware, allows to wait for ongoing requests to finish.

Sample usage:

public class Startup
{
  //...
  public IServiceProvider ConfigureServices(IServiceCollection services)
  {
     services.AddMvc();
     services.AddGracefullShutdown();
  }
  
  //...
  public void Configure(IApplicationBuilder app)
  {
    app.UseGracefullShutdown(options => {
      options.Redirect = true; 
      // Redirect: false - incoming requests will get 500 code after shutdown initiation
      //         : true  - incoming requests will be redirected with 308 code, and same url
      //                   for load balancer case
      options.ShutdownTimeout = TimeSpan.FromSeconds(20); 
      // default timeout is 10 seconds
    });

    app.UseMvc();
  }
  //...
}

Shutdown can be initiated using:

• IApplicationLifetime.StopApplication()
• Ctrl+C for self-hosted Kestrel server
• SIGINT or SIGTERM signals for self-hosted Kestrel server in linux / docker

After shutdown is initiated, ongoing requests will be processed until timeout reached, new incoming requests will get 500 or 308 code.

GracefullShutdownOptions and GracefullShutdownState are thread safe and registered as singletons.