AppInsightsRouteOperationNameAttribute

AppInsightsRouteOperationNameAttribute.cs

using System;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace WebApplication4
{
    public class AppInsightsRouteOperationNameAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            var httpContext = filterContext.HttpContext.ApplicationInstance.Context;
            var requestTelemetry = httpContext.GetRequestTelemetry();

            var method = httpContext.Request.HttpMethod;

            var origRouteValues = filterContext.RouteData.Values;
            var routeValues = new RouteValueDictionary();
            foreach ( var k in origRouteValues.Keys )
            {
                if ( k == "controller" || k == "action" || k == "area" )
                {
                    routeValues[k] = origRouteValues[k];
                } else
                {
                    routeValues[k] = $"[{k}]";
                }
            }

            var path = "/" + filterContext.RouteData.Route.GetVirtualPath(filterContext.RequestContext, routeValues).VirtualPath;

            requestTelemetry.Name = $"{method} {path}";
            base.OnActionExecuting(filterContext);
        }

    }
}