---
AWSTemplateFormatVersion: '2010-09-09'
Description: Sample Stack  
Parameters:
  Param1:
    Description: Param1
    Type: String
Resources:
  LambdaExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - lambda.amazonaws.com
          Action:
          - sts:AssumeRole
      Path: "/"
      Policies:
      - PolicyName: lambda_policy
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
            - logs:CreateLogGroup
            - logs:CreateLogStream
            - logs:PutLogEvents
            Resource: arn:aws:logs:*:*:*
          - Effect: Allow
            Action:
            - cloudformation:DescribeStacks
            Resource: "*"
  GenID:
    Type: AWS::Lambda::Function
    Properties:
      Code:
        ZipFile:
          Fn::Join:
          - "\n"
          - - import random
            - import json
            - import cfnresponse
            - from cfnresponse import send, SUCCESS
            - 'def handler(event, context):'
            - "   if event['RequestType'] == 'Delete':"
            - "       send(event, context, 'SUCCESS', {})"
            - "       return"
            - "   if event['RequestType'] == 'Create':"
            - '       token= "%0x.%0x" % (random.SystemRandom().getrandbits(3*8),
              random.SystemRandom().getrandbits(8*8))'
            - "       responseData = {}"
            - "       responseData['Data'] = token"
            - "       send(event, context, 'SUCCESS', responseData)"
            - "       return token"
      Handler: index.handler
      Runtime: python3.7
      Timeout: 5
      Role:
        Fn::GetAtt:
        - LambdaExecutionRole
        - Arn
  GetID:
    Type: Custom::GenerateID
    Version: '1.0'
    Properties:
      ServiceToken:
        Fn::GetAtt:
        - GenID
        - Arn
      ResponseURL:
        Fn::Join:
        - ''
        - - http://ResponseURL
          - Ref: AWS::StackId
          - RequestId
      StackId:
        Ref: AWS::StackId
      ResourceProperties:
        RequestType: Create
        RequestId:
          Fn::Join:
          - ''
          - - Ref: AWS::StackId
            - RequestId
        LogicalResourceId: GenIDLogicalResourceId
Outputs:
  ClusterID:
    Value:
      Fn::GetAtt:
      - GetID
      - Data
  Param1Output:
    Value: !Ref Param1