Unable to load type from assembly (C# Amazon lambda function)

Question

Since Amazon now supports C# to build AWS Lambda functions, i wanted to give it a try, but i get stuck when performing a test.

This is my simple class:

using System;
using System.IO;
using System.Text;

using Amazon.Lambda.Core;
//using Amazon.Lambda.Serialization.Json;

namespace MyTest
{
    public static class LambdaFunction
    {
        public static string Handler(Stream stream)
        {
            return "Hello World";
        }
    }
}

I compiled it using the .Net Core runtime. The result is a folder netstandard1.4 with the assembly MyTest.dll file and a MyTest.deps.json file. These compressed as .zip are uploaded to the AWS Lambda console.

In the configuration tab the Handler is defined as:

MyTest::LambdaFunction::Handler

But when i hit the TEST button, this is the error message returned:

{
  "errorType": "LambdaException",
  "errorMessage": "Unable to load type 'LambdaFunction' from assembly 'MyTest, Culture=neutral, PublicKeyToken=null'."
}

Note1 : before i knew i needed to use .Net Core instead of the full CLR, i got an error that the assembly could not be loaded, so i figured the assembly is compiled ok now.

Note2 : I've tried several argument-types (Stream and String are the only supported ones without custom serializer though) for the Handler method, as well as static/instance class or method or any combination, all to no avail.

Anyone who got this working already and can give me a few pointers?

Answer 1

Well, it's one of those days i guess....

The answer is, i forgot to include the namespace 8|

Should be:

MyTest::MyTest.LambdaFunction::Handler