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Can we have access to the HttpTrigger's AuthorizationLevel within the IFunctionsWorkerMiddleware FunctionContext? #2655

Description

@JosephG3001

I've created a simple middleware that handles authorization:

public class AuthMiddleware(
    IAuthService authService)
    : IFunctionsWorkerMiddleware
{
    public async Task Invoke(FunctionContext context, FunctionExecutionDelegate next)
    {
        var httpTriggerBinding = context.FunctionDefinition.InputBindings.Values.FirstOrDefault(a => a.Type == AppConstants.HttpTigger);

        // TODO: We want to ignore functions with "AuthorizationLevel.Anonymous"
        if (httpTriggerBinding != null)
        {
            var httpRequestData = await context.GetHttpRequestDataAsync();

            if (!httpRequestData.Headers.TryGetValues(HeaderNames.Authorization, out var headers))
            {
                var httpResponseData = httpRequestData.CreateResponse(HttpStatusCode.BadRequest);
                context.GetInvocationResult().Value = httpResponseData;
                return;
            }
            else
            {
                var claimsPrincipal = await authService.GetClaimsPrincipal(headers.First());
                if (claimsPrincipal == null)
                {
                    var httpResponseData = httpRequestData.CreateResponse(HttpStatusCode.Unauthorized);
                    context.GetInvocationResult().Value = httpResponseData;
                    return;
                }

                httpRequestData.FunctionContext.Items.Add(AppConstants.User, claimsPrincipal);
            }
        }

        await next(context);
    }
}

Is there no way of accessing the AuthorizationLevel so I can ignore functions with AuthorizationLevel.Anonymous?

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