Introduction to task-gateway

Task-gateway will trigger multiple sub tasks or dependent tasks once the parent task is completed based on given configuration.

Configurations can be of following type :

1. Map source field to destination field.
2. Get other details based on sourceField by fetching the data from API.

Example :

    input-event.json:
    {
      "eventType": "ORDER_PLACED",
      "customerDetails" : {
        "customerId": "cust123",
        "customerName" : "John",
        "email" : "John@gmail.com",
        "mobileNumber" : "9988776655"      
      },
      "orderDetails" : {
        "orderId" : "111",
        "orderedItem"  : "Sony Headphones"      
      }
    }    

Create following subTasks once the order is placed

    sms-notification.json:
    {
      "eventType": "ORDER_PLACED_SMS_NOTIFICATION",
      "customerName" : "John",
      "orderedItem"  : "Sony Headphones",
      "mobileNumber" : "9988776655"
    }    

    email-notification.json:
    {
      "eventType": "ORDER_PLACED_EMAIL_NOTIFICATION",
      "customerName" : "John",
      "orderedItem"  : "Sony Headphones",
      "email" : "John@gmail.com"
    }

Publish DISPATCH_ORDER event and fetch the necessary address details based on orderId from another service

    dispatch-order.json:
    {
      "eventType": "DISPATCH_ORDER",
      "customerId": "cust123",
      "orderId" : "111",
      "orderedItem"  : "Sony Headphones",
      "addressDetails" : {
        "landmark"  : "rto office",
        "city"  : "pune",
        "addressLine1" : "A212 Hermes"
      }
    }