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I have the following code:

 [LayoutRenderer("http-request")] public class NLogHttpRequestLayoutRenderer : AspNetRequestPostedBody { protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent) { base.DoAppend(builder, logEvent); var body = builder.ToString(); // after getting the type of the action's request model do serialization deserialization things ... }

This is my nLog renderer. It will render every request body into the log system. But some bodies contain sensitive data like emails or bank cards. I want to mask the data. To do that, I need to understand what is the type of the action request. Considering, I have the following action:

 [HttpPost] [Route("api/v1/payment/pay")] [MaskRequestMethod(typeof(PaymentRequest))] public Task<BankCardActionResponse> Pay([FromBody] PaymentRequest request) { if (request == null) throw new HttpResponseException(HttpStatusCode.BadRequest); return _paymentService.PayAsync(SsoHelper.Ctn, request); }

The question is, how can I get into the renderer the MethodInfo of the action if I have the HttpContext. Because if I get the MethodInfo I can retrieve the attribute [MaskRequestMethod(typeof(PaymentRequest))] and get the Type from the attribute. Having that Type, I can deserialize JSON body, mask it according to programmed in advance rules and serialize it again. That was the short explanation why do I need it at all.

So, the question: if I have the HttpContext can I get the MethodInfo of the action that is going to be executed?

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You can use ActionFilter

using Microsoft.AspNetCore.Mvc.Filters; using System; using System.Reflection; using System.Runtime.CompilerServices; public class CustomFilter : IActionFilter { public void OnActionExecuting(ActionExecutingContext context) { var controllerType = context.Controller.GetType(); var actionName = ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ActionName; MethodInfo method = controllerType.GetMethod(actionName); Type attType = typeof(AsyncStateMachineAttribute); // Obtain the custom attribute for the method. // The value returned contains the StateMachineType property. // Null is returned if the attribute isn't present for the method. var attrib = (AsyncStateMachineAttribute)method.GetCustomAttribute(attType); //do your stuff.... } public void OnActionExecuted(ActionExecutedContext context) { // Do something after the action executes. } }
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I think it's not gonna help me. I need to know the MethodInfo not here, but into the renderer in the moment of DoAppend method execution.
You can access HttpContext from DoAppend through HttpContextAccessor And use same code I provided above, but extracting actionName through contextAccessor
There is no the "Controller" property into the HttpContext. So, ActionExecutingContext is a bit different thing.
Try this answer instead stackoverflow.com/a/9022179/14202100
There is no guarantee that the controller will only have one method with any given name. ControllerActionDescriptor has a MethodInfo property. Why not just use that instead of trying to find it based on the name?

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