AWS EventBridge Input transformation rule with array List

Question

I have a event with an Arraylist :

I have an Arraylist :

"TelephoneDetails": {
    "Telephone": [
     {
       "Number": "<Number>",
        "Type": "<Type>",
        "Primary": "<Primary>",
       "TextEnabled": "<TextEnabled>"
     },{
        "Number": "<Number>",
        "Type": "<Type>",
        "Primary": "<Primary>",
        "TextEnabled": "<TextEnabled>"
     }
    ]
}

how to write the InputTransformer for the InputPath for this ? ,

i can get the Telephone[0]using this

{

  "Type": "$.detail.payload.TelephoneDetails.Telephone[0].Type",
  "Number": "$.detail.payload.TelephoneDetails.Telephone[0].Number",
  "Primary": "$.detail.payload.TelephoneDetails.Telephone[0].Primary",
  "TextEnabled": "$.detail.payload.TelephoneDetails.Telephone[0].TextEnabled"

}

not understanding how to write, if I have ArrayList of N?

score 0 · Answer 1 · answered May 17 '22 at 21:55

0

Is simple as that:

"TextEnabled": "$.detail.payload.TelephoneDetails.Telephone[*].TextEnabled"

please note the [*] instead of [0] to let the template engine iterates over the list of Telephones

answered May 17 '22 at 21:55

Andrea Rabbaglietti

948
12
20

2

No, that doesn't work. Using `[*]` instead of `[0]` results in the following error: `Output can not be generated, because field "$.detail.payload.TelephoneDetails.Telephone[*].TextEnabled" can not be found in the sample event` – Rob Sep 02 '22 at 17:32

score -1 · Accepted Answer · answered Sep 28 '21 at 00:04

-1

I think you can't do this with plain EB syntax. Probably the best way would be to put a lambda function as target of your EB rule, make the transformations and then forward it to your target.

answered Sep 28 '21 at 00:04

Marcin

215,873
14
235
294

Thanks, That’s the last option which I can think of, Checking if there is any way I can achieve this in EB script by using some special characters or syntax. – Anitha Sep 30 '21 at 14:07
@Anitha How did it go? Still unclear what you can do? – Marcin Oct 03 '21 at 00:02
@Marcin that's wrong. Actually is there a way, please see my answer – Andrea Rabbaglietti May 17 '22 at 21:52

AWS EventBridge Input transformation rule with array List

2 Answers2