Using-StepFunction/StepFunction_1.json at master · DebarshiMondal-06/Using-StepFunction · GitHub

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{
  "StartAt": "GetData",
  "States": {
    "GetData": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:region:143151xxxxxx:function:p@@@-sub",
      "Parameters": {
        "email.$": "$.val.email"
      },
      "ResultPath": "$.value",
      "Next": "Check_Value"
    },
    "Check_Value": {
      "Type": "Choice",
      "Choices": [
        {
          "Variable": "$.value",
          "IsNull": true,
          "Next": "ContainsNull"
        },
        {
          "Variable": "$.value.email",
          "IsString": true,
          "Next": "ContainsString"
        }
      ],
      "Default": "DefaultState"
    },
    "ContainsString": {
      "Type": "Fail",
      "Comment": "Exists"
    },
    "ContainsNull": {
      "Type": "Task",
      "Resource": "arn:aws:states:::sns:publish",
      "Parameters": {
        "TopicArn": "arn:aws:sns:region:143151xxxxxx:@@@-trigger",
        "Message.$": "$.val",
        "MessageAttributes": {
          "customer": {
            "DataType": "String",
            "StringValue": "rugby"
          }
        }
      },
      "End": true
    },
    "DefaultState": {
      "Type": "Succeed"
    }
  }
}