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Parámetros
Parámetro | Detalles |
---|---|
IDictionary<string,object> environment | Esta es la única recopilación en la que OWIN comunica información durante una llamada. Todas las claves se pueden encontrar en https://docs.asp.net/en/latest/fundamentals/owin.html#owin-keys |
Observaciones
El tipo AppFunc
es solo un alias para el tipo Func<IDictionary<string, object>, Task>
para acortar las firmas de métodos, de manera muy similar a typedef
en C ++.
Muestra la ruta de la solicitud y el tiempo que llevó procesarla.
//define a short alias to avoid chubby method signatures
using AppFunc = Func<IDictionary<string, object>, Task>;
class RequestTimeMiddleware
{
private AppFunc _next;
public RequestTimeMiddleware(AppFunc next)
{
_next = next;
}
public async Task Invoke(IDictionary<string, object> environment)
{
IOwinContext context = new OwinContext(environment);
var path = context.Request.Path;
var sw = Stopwatch.StartNew();
//Queue up the next middleware in the pipeline
await _next(environment);
//When the request comes back, log the elapsed time
Console.WriteLine($"Request for {path} processed in {sw.ElapsedMilliseconds}ms");
}
}
public static class RequestTimeMiddlewareExtensions
{
//Extension method as syntactic sugar, to get a meaningful way
//in adding the middleware to the pipeline
public static void UseRequestTimeMiddleware(this IAppBuilder app)
{
app.Use<RequestTimeMiddleware>();
}
}
public class Startup
{
public void Configuration(IAppBuilder app)
{
//add the Middleware as early as possible
app.UseRequestTimeMiddleware();
//Queue up every other module
app.Use(async (environment, next) =>
{
await environment.Response.WriteAsync("Hello from the console world");
await next();
});
}
}
Modified text is an extract of the original Stack Overflow Documentation
Licenciado bajo CC BY-SA 3.0
No afiliado a Stack Overflow