Amazon.Lambda.AspNetCoreServer different behaviour on local and AWS

[CrazyBaran]

Hello AWS Team,

There is some problem with your implementation of LambdaEntryPoint, behavior is diffferent than this which is on LocalEntryPoint. To recreate this case you need to made CustomAttribute:

public class CustomAttribute : ActionFilterAttribute
   {
       public override void OnActionExecuted(ActionExecutedContext actionExecutedContext)
       {
           HttpResponse response = actionExecutedContext.HttpContext.Response;
           LambdaLogger.Log("Test "+ response.StatusCode+ " "+ (response != null).ToString() +" " + 
               response.IsSuccessStatusCode().ToString()+ " " + (actionExecutedContext.Result != null).ToString());
           
           base.OnActionExecuted(actionExecutedContext);
       }
   }  

If you test this CustomAttribute with localEntry you will see that StatusCode is set, but when you debug this on AWS you will get 0 cause something work in different order. I investigate this issue with OData team here: OData/WebApi#1227

[normj]

I was able to reproduce the issue but not sure yet why it is happening but I'll keep investigating.

[CrazyBaran]

Some news in this topic?

[wshirey]

@normj, I am also having a similar issue with this custom action filter

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;

namespace Infrastructure
{
    public class ValidateModelAttribute : ActionFilterAttribute, IOrderedFilter
    {
        public ValidateModelAttribute()
        {
            Order = 100;
        }
        public override void OnActionExecuting(ActionExecutingContext context)
        {
            if (!context.ModelState.IsValid)
            {
                context.Result = new BadRequestObjectResult(context.ModelState);
            }
        }
    }
}

It works fine locally and returns validation errors and terminates the request, but it doesn't execute when deployed to AWS Lambda.

[CrazyBaran]

This bug still occur, if there is some plan to repair it?

[hakimio]

@normj Any plans to fix this?

[julealgon]

What's the latest on this? It's been more than a year since the last comment was added. @NGL321 , can you provide an update?