Comment: Scatter Gather State Machine for Amazon Location Service
StartAt: Scatter Function
States:
  Scatter Function:
    Type: Task
    Resource: "${ScatterFunctionArn}"
    OutputPath: $.Payload
    Parameters:
      Payload.$: $
    Retry:
      - ErrorEquals:
          - Lambda.ServiceException
          - Lambda.AWSLambdaException
          - Lambda.SdkClientException
        IntervalSeconds: 2
        MaxAttempts: 6
        BackoffRate: 2
    Next: Process
  Process:
    Type: Map
    ItemsPath: $.Shards
    Iterator:
      StartAt: Process Function
      States:
        Process Function:
          Type: Task
          Resource: "${ProcessFunctionArn}"
          OutputPath: $.Payload
          Parameters:
            Payload.$: $
          Retry:
            - ErrorEquals:
                - Lambda.ServiceException
                - Lambda.AWSLambdaException
                - Lambda.SdkClientException
              IntervalSeconds: 2
              MaxAttempts: 6
              BackoffRate: 2
          End: true
    MaxConcurrency: 100
    Next: Gather Function
  Gather Function:
    Type: Task
    Resource: "${GatherFunctionArn}"
    OutputPath: $.Payload
    Parameters:
      Payload.$: $
    Retry:
      - ErrorEquals:
          - Lambda.ServiceException
          - Lambda.AWSLambdaException
          - Lambda.SdkClientException
        IntervalSeconds: 2
        MaxAttempts: 6
        BackoffRate: 2
    End: true