How to capture controller name when it actually not controller in nlog .net core?

NLog can capture the controller name and action using {aspnet-mvc-controller} and {aspnet-mvc-action} configuration options, it works fine.

In my case, there is an action that not using a controller pattern (tusdotnet). When I want to log activity on that action, the values in {aspnet-mvc-controller} and {aspnet-mvc-action} are empty.

Is there a way to manually set {aspnet-mvc-controller} and {aspnet-mvc-action}?

Solution

${aspnet-mvc-controller} and ${aspnet-mvc-action} extracts their values (controller + action) from HttpContext.Current.GetRouteData.

If there is no HttpContext, then you can consider implementing a fallback-value using whenEmpty=. Ex. Logging like this:

logger.WithProperty("MvcAction", "myAction")
      .WithProperty("MvcController", "myController")
      .Info("Hello World");

And then configure the layout like this:

${event-properties:MvcAction:whenEmpty=${aspnet-mvc-action}}
${event-properties:MvcController:whenEmpty=${aspnet-mvc-controller}}

Instead of using ${event-properties} then you could also use ScopeContext / BeginScope. See also: https://github.com/NLog/NLog/wiki/Context