[Question] Levant exit on conditional

[evaisman-tc]

Description

Hi, i'm new to levant/nomad and was following along with https://learn.hashicorp.com/tutorials/nomad/levant-abstract-jobs?in=nomad/templates. I was wondering if it's possible to forcibly exit or error out during rendering of a template.

For example, we have a few variables such as $Values.zookeeper.job_namethat should be provided by either our defaults or the user. But if I wanted to make this field required I might set something like

[[ if $Values.zookeeper.job_name -]]
          job "[[ $Values.zookeeper.job_name ]]" {
[[ else -]]
          [[- "No job_name provided. Please include a value for zookeeper.job_name in your json file." | printf | exit -]]
[[ end -]]

Then calling Levant render would error out on that print statement.

Any help would be appreciated.

Thanks!