C# Lambda

csharplambda.yaml

AWSTemplateFormatVersion: '2010-09-09'
Description: Create a Serverless stack with CloudFormation using Serverless Application Model
Transform: AWS::Serverless-2016-10-31
Resources:
  CSharpHelloWorld:
    Type: AWS::Serverless::Function
    Description: Use a lambda function to print Hello World
    Properties:
      Handler: csharplambda::CSharpFunction.HelloWorld::Handler
      Runtime: dotnetcore1.0
      CodeUri: ./bin/Debug/netcoreapp1.0/publish
      MemorySize: 128
      Timeout: 5
      Events:
        HelloResource:
          Type: Api
          Properties:
            Path: /hello
            Method: get

program.cs

using Amazon.Lambda.Core;
using Newtonsoft.Json;

namespace CSharpFunction
{
    public class Headers
    {
        [JsonProperty("Content-Type")]
        public string ContentType { get; set; }
    }

    public class Response
    {
        [JsonProperty("headers")]
        public Headers Headers { get; set; }

        [JsonProperty("statusCode")]
        public int StatusCode { get; set; }

        [JsonProperty("body")]
        public string Body { get; set; }
    }

    public class HelloWorld
    {
        [LambdaSerializer(typeof(Amazon.Lambda.Serialization.Json.JsonSerializer))]
        public Response Handler()
        {
            return new Response
            {
                Headers = new Headers
                {
                    ContentType = "text/plain"
                },
                StatusCode = 200,
                Body = "Hello World"
            };
        }
    }
}

project.json

{
  "version": "1.0.0-*",
  "dependencies": {},
  "frameworks": {
    "netcoreapp1.0": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "type": "platform",
          "version": "1.0.1"
        },
        "Amazon.Lambda.Serialization.Json": "1.0.1",
        "Newtonsoft.Json": "9.0.1"
      },
      "imports": "dnxcore50"
    }
  }
}