Bug: copier error in ReconcileWorkerSliceConfig logged but not returned — zero-value config written to cluster

[mdryaaan]

📜 Description

In ReconcileWorkerSliceConfig, copier.CopyWithOption is used at line 230 to deep-copy externalGatewayControllersConfig into externalGatewayConfig. If the copy fails, the error is logged at line 234 but execution continues. At line 275, workerSliceConfig.Spec.ExternalGatewayConfig = externalGatewayConfig writes the zero-value (empty) struct to the Kubernetes API. Worker clusters then receive an empty external gateway config, silently losing all gateway configuration.

👟 Reproduction steps

1. Read service/worker_slice_config_service.go:230-235 — error from copier.CopyWithOption is logged but not returned.
2. Read line 275 — workerSliceConfig.Spec.ExternalGatewayConfig = externalGatewayConfig unconditionally writes the result.
3. If copier.CopyWithOption fails at runtime, externalGatewayConfig remains as its zero value and overwrites real config on the worker slice.

👍 Expected behavior

If copier.CopyWithOption returns an error, ReconcileWorkerSliceConfig should return ctrl.Result{}, err immediately so the bad value is never written to Kubernetes.

👎 Actual Behavior

The error is logged and execution continues. A zero-value ExternalGatewayConfig is written to the worker slice config resource, silently erasing the real gateway configuration.

🐚 Relevant log output

Version

main branch — run git describe --tags in the repo

🖥️ What operating system are you seeing the problem on?

Linux

✅ Proposed Solution

Change lines 233–235 from logging-and-continuing to returning the error:

if err != nil {
    return ctrl.Result{}, err
}

👀 Have you spent some time to check if this issue has been raised before?

• I checked and didn't find any similar issue

Code of Conduct

• I agree to follow this project's Code of Conduct