[BUG] regex restriction on GCP Batch custom label values

[bchen4]

I was trying to label all GCP batch resources using -o in the CLI. (according to this doc and this doc )
My content of options.json is

{"google_labels":{"workflow-run-execution-id":"97fed6c4-6442-4efe-9e73-7b3592a33480"}} 

and my command is java -Dconfig.file=config -jar /app/cromwell.jar run wf.wdl -i input.json -o options.json

The error I am getting:

After adding string prefix to my own uuid as label value, the error was gone and my workflow ran smoothly. However, I do need to pass in the uuid so downstream analysis pipeline can still work.

Related code reporting error is here and error is produce here and this is the regex definition

I am wondering can the code be updated to only check the key of a label so it aligns with GCP which does not have this restriction on label values? Or use another regex "[a-z0-9]([-a-z0-9]*[a-z0-9])?" for label value check?

Cromwell version: I built develop container, and the tag is 87-ee2b10f-SNAP.
Backend: GCP Batch.

Please let me know if this could be something you guys would accept before I put in PR. Thanks.

[dspeck1]

Looks fine to PR. Google Cloud Batch accepts the label starting with a number. Had you run this on PAPv2 previously?

[bchen4]

Looks fine to PR. Google Cloud Batch accepts the label starting with a number. Had you run this on PAPv2 previously?

Nope, just Batch. I will submit something soon.

[bchen4]

@dspeck1 here is the PR #7353

[AlexITC]

Given that #7355 was merged, is this issue resolved?

[aednichols]

PR merged, closing.