Apply workflowMetadata before workflow Create

[kostas-theo]

Summary

I can submit a workflow using a WorkflowTemplate and I can ensure my workflow has the correct annotations / labels using spec.workflowMetadata. Upon submitting, the Workflow resource is initially created WITHOUT my required metadata. The controller then updates my workflow's metadata to include what was specified in my template in workflowMetadata.

I propose using the SubmitOpts, or some new configuration to set any static workflow metadata at creation time.

Optionally, it might also be a good idea to show in the UI (SubmitWorkflowPanel), what labels are set in the spec.workflowMetadata field.

Use Cases

We are currently using gatekeeper to enforce labels for all workflows to get more precise metrics. This uses an admission webhook to stop users from creating workflows which don't have required labels. As the required labels are NOT PRESENT at creation time, we cannot enforce any labels.

---

Message from the maintainers:

Love this enhancement proposal? Give it a 👍. We prioritise the proposals with the most 👍.

[tooptoop4]

argo-workflows/workflow/controller/operator.go

Line 491 in 2eb871b

func (woc *wfOperationCtx) updateWorkflowMetadata() error {

is the section, i wonder if this issue causes #12167