step function

{
  "Comment": "A description of my state machine",
  "StartAt": "Add Order Entry",
  "States": {
    "Add Order Entry": {
      "Type": "Task",
      "Resource": "arn:aws:states:::dynamodb:putItem",
      "Parameters": {
        "TableName": "CustomerOrdersTable",
        "Item": {
          "customerId": {
            "S.$": "$.customerId"
          },
          "orderId": {
            "S.$": "$.orderId"
          }
        }
      },
      "ResultSelector": {
        "statusCode.$": "$.SdkHttpMetadata.HttpStatusCode"
      },
      "ResultPath": "$.result",
      "Next": "Choice"
    },
    "Choice": {
      "Type": "Choice",
      "Choices": [
        {
          "Variable": "$.result.statusCode",
          "NumericEquals": 200,
          "Next": "Call Credit Card Service To Charge Customer"
        }
      ],
      "Default": "Fail"
    },
    "Call Credit Card Service To Charge Customer": {
      "Type": "Task",
      "Resource": "arn:aws:states:::lambda:invoke",
      "Parameters": {
        "Payload.$": "$",
        "FunctionName": "arn:aws:lambda:us-east-1:755314965794:function:Test:$LATEST"
      },
      "Retry": [
        {
          "ErrorEquals": [
            "Lambda.ServiceException",
            "Lambda.AWSLambdaException",
            "Lambda.SdkClientException"
          ],
          "IntervalSeconds": 2,
          "MaxAttempts": 6,
          "BackoffRate": 2
        }
      ],
      "Next": "Success",
      "Catch": [
        {
          "ErrorEquals": [
            "States.ALL"
          ],
          "Next": "Fallback - Delete failed order",
          "ResultPath": "$.result"
        }
      ],
      "ResultPath": "$.result"
    },
    "Fallback - Delete failed order": {
      "Type": "Task",
      "Resource": "arn:aws:states:::dynamodb:deleteItem",
      "Parameters": {
        "TableName": "CustomerOrdersTable",
        "Key": {
          "customerId": {
            "S.$": "$.customerId"
          },
          "orderId": {
            "S.$": "$.orderId"
          }
        }
      },
      "Next": "Fail"
    },
    "Success": {
      "Type": "Succeed"
    },
    "Fail": {
      "Type": "Fail"
    }
  }
}