scala - Inner Gatling expressions

Question

I have a CSV file with a single column, which contains a JSON array. Each JSON object in the array has a field version which is a time in miliseconds.

myCol
[{"id": 1, version: 234343535}, {"id": 2, version: 23455454}, ...]

Is it possible to regenerate the version during slimulation running? Currently, Im' injecting the array as a StringBody("${myCol}")

Does Gatling EL allows to modify i.e. the version during runtime? Or do I have to use session and run through the string searching for version field?

question from:https://stackoverflow.com/questions/65934128/inner-gatling-expressions

Answer 1

Gatling Expression Language is read only, so indeed, you have to code your own transformation function with the Session API.

Depending on how much constant things there are in your records, you might want to drop using a feeder and directly generate the full JSON payload on the fly.