JSON transformation via Dataweave

Question

I have an input JSON below which I want to transform it into another JSON structure:

Input JSON

{
    data={
       
            schema=81Ze2hDYGKOQYW02LVtUMQ,
            payload={
                        value__c=500,
                        reference__c=00001503PM,
                        CreatedById=0051x000003SQ9eAAG,
                        originalReference__c=882595596510490G,
                        currency__c=SEK,
                        CreatedDate=2020-09-10T15:16:57.175Z,
                        merchantAccount__c=Hastens_eCom_Test
                    },
            event={replayId=18188}
        },
            channel=/event/Capturepayment__e
}

and I want to transform it into the format below.

Output JSON

   {
      "originalReference": "882595596510490G",
      "modificationAmount": {
        "value": 500,
        "currency": "SEK"
      },
      "reference": "00001503PM",
      "merchantAccount": "Hastens_eCom_Test"
    }

Answer 1

Your input payload doesn't seem to be a valid JSON.

Using the input payload adjusted to be a valid JSON:

{
   "data":{
      "schema":"81Ze2hDYGKOQYW02LVtUMQ",
      "payload":{
         "value__c":500,
         "reference__c":"00001503PM",
         "CreatedById":"0051x000003SQ9eAAG",
         "originalReference__c":"882595596510490G",
         "currency__c":"SEK",
         "CreatedDate":"2020-09-10T15:16:57.175Z",
         "merchantAccount__c":"Hastens_eCom_Test"
      },
      "event":{
         "replayId":"18188"
      }
   },
   "channel":"/event/Capturepayment__e"
}

the following dataweave expression:

%dw 2.0
output application/json
---
{
  originalReference: payload.data.payload.originalReference__c,
  modificationAmount: {
    value: payload.data.payload.value__c,
    currency: payload.data.payload.currency__c,
  },
  reference: payload.data.payload.reference__c,
  merchantAccount: payload.data.payload.merchantAccount__c
}

will result in the expected output:

{
  "originalReference": "882595596510490G",
  "modificationAmount": {
    "value": 500,
    "currency": "SEK"
  },
  "reference": "00001503PM",
  "merchantAccount": "Hastens_eCom_Test"
}