Set AWS Authorizer entry for ASP.NET Core lambda function serverless.template file

Question

I am trying to set an already existing authorizer function on my .Net Core Web API app. When I use purely aws lambda nodejs, the .yml file to accomplish it, looks like this:

custom:
  defaultStage: test
  currentStage: ${opt:stage, self:custom.defaultStage} 
  defaultRegion: us-east-1
  currentRegion: ${opt:region, self:custom.defaultRegion}
  **defaultAuthorizer**: us-east-1:xxxxxxxx:function:TypeToken-test-Authorizer
  **currentAuthorizer**: ${opt:authorizer, self:custom.defaultAuthorizer}

provider:
  name: aws
  runtime: nodejs6.10
  stage: ${self:custom.currentStage}
  profile: ${opt:profile, "default"} 
  region: ${self:custom.currentRegion}

functions:
  MyFunctionName:
    handler: handlerTestAPI.myFunctionName
    events:
      - http:
          path: myFunctionName
          method: post
          cors: true
          integration: lambda
          **authorizer:**
            arn: arn:aws:lambda:${self:custom.currentAuthorizer}
            resultTtlInSeconds: 0
            identitySource: method.request.header.Authorization
            type: token

For this case, the ASP.NET Core App serverless.template file is similar to this:

"Resources" : {

    "AspNetCoreFunction" : {
      "Type" : "AWS::Serverless::Function",
      "Properties": {
        "Handler": "Test.API::Project.API.LambdaEntryPoint::FunctionHandlerAsync",
        "Runtime": "dotnetcore2.1",
        "CodeUri": "",
        "MemorySize": 256,
        "Timeout": 30,
        "Role": null,
        "Policies": [ "AWSLambdaFullAccess" ],
        "Environment" : {
          "Variables" : {
            "TestTable" : { "Fn::If" : ["CreateProjectTable", {"Ref":"ProjectTable"}, { "Ref" : "ProjectTableName" } ] }
          }
        },
        "Events": {
          "PutResource": {
            "Type": "Api",
            "Properties": {
              "Path": "/{proxy+}",
              "Method": "ANY"
            }
          }
        }
      }
    }

I have searched for templates where an existing authorizer is set on top of a .net core serverless function using serverless.template file, but haven't found one yet.

Thanks for the feedback.

Answer 1

I think it's a widely requested feature but not supported yet until a few days ago

The github page is now updated

https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api

Now you can use the AUTH property

Auth configuration for this specific Api+Path+Method. Useful for overriding the API's DefaultAuthorizer or setting auth config on an individual path when no DefaultAuthorizer is specified.

The default template generate an implicit API gateway. To set anthorizer, you may need to create an explicit API gateway

Also, there is an example on their Github page