step-functions-workflow.json

{
  "StartAt": "random-number-generator-lambda-config",
  "States": {


    "random-number-generator-lambda-config": {
      "Comment": "To configure the random-number-generator-lambda.",
      "Type": "Pass",
      "Result": {
          "min": 1,
          "max": 10
        },
      "ResultPath": "$",
      "Next": "random-number-generator-lambda"
    },
    

    "random-number-generator-lambda": {
      "Comment": "Generate a number based on input.",
      "Type": "Task",
      "Resource": "${random-number-generator-lambda-aws-arn}",
      "Next": "send-notification-if-less-than-5"
    },


    "send-notification-if-less-than-5": {
      "Comment": "A choice state to decide to send out notification for <5 or trigger power of three lambda for >5.",
      "Type": "Choice",
      "Choices": [
        {
            "Variable": "$",
            "NumericGreaterThanEquals": 5,
            "Next": "power-of-three-lambda"
        },
        {
          "Variable": "$",
          "NumericLessThan": 5,
          "Next": "send-multiple-notification"
        }
      ]
    },


    "power-of-three-lambda": {
      "Comment": "Increase the input to power of 3 with customized input.",
      "Type": "Task",
      "Parameters" : {
        "base.$": "$",
        "exponent": 3
      },
      "Resource": "${power-of-number-lambda-aws-arn}",
      "End": true
    },


    "send-multiple-notification": {
      "Comment": "Trigger multiple notification using AWS SNS",
      "Type": "Parallel",
      "End": true,
      "Branches": [
        {
         "StartAt": "send-sms-notification",
         "States": {
            "send-sms-notification": {
              "Type": "Task",
              "Resource": "arn:aws:states:::sns:publish",
              "Parameters": {
                "Message": "SMS: Random number is less than 5 $",
                "PhoneNumber": "${valid-handphone-number}"
              },
              "End": true
            }
         }
       },
       {
        "StartAt": "send-sns-topic",
         "States": {
           "send-sns-topic": {
              "Type": "Task",
              "Resource": "arn:aws:states:::sns:publish",
              "Parameters": {
                "Message": "Email: Random number is less than 5: $",
                "TopicArn": "${aws-sns-topic-to-send-out-email}"
              },
              "End": true
            }
         }
       }  
      ]
    }


  }
}