AWSTemplateFormatVersion : '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Parameters:
  ModeEnvVariable:
    Type: String
  LayerArn:
    Default: arn:aws:lambda:us-west-2:111111111111:layer:layer:1
    Type: String

Resources:
  HelloWorldFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: main-layers.custom_layer_handler
      Runtime: python3.9
      FunctionName: customname
      CodeUri: .
      Timeout: 600
      Environment:
        Variables:
          MODE: !Ref ModeEnvVariable
      Layers:
        # Test remote layers with warm containers.
        - Ref: LayerArn
      Events:
        BasePath:
          Type: Api
          Properties:
            Method: GET
            Path: /