🐛 OCPBUGS-76380: fix(deploymentConfig): merge volumes/volumeMounts by name instead of appending

[camilamacedo86]

Problem
When a ClusterExtension’s deploymentConfig defined volumes or volumeMounts with names that already existed in the bundle’s CSV deployment, the implementation would simply append them. This caused duplicate entries with identical names, which is invalid in Kubernetes since volume and volumeMount names must be unique within a pod spec.

Solution
Switch from a naive append approach to a merge-by-name strategy. If a volume or volumeMount from the deploymentConfig matches an existing one by name, it replaces the original entry instead of creating a duplicate. Entries with new names are appended as usual.

This PR implements the same behvaiour of OLMv0 , see:

• https://github.com/operator-framework/operator-lifecycle-manager/blob/v0.41.0/pkg/controller/operators/olm/overrides/inject/inject.go#L118-L132
• https://github.com/operator-framework/operator-lifecycle-manager/blob/v0.41.0/pkg/controller/operators/olm/overrides/inject/inject.go#L166-L180

Example

Before (on main) — append causes duplicates (INVALID)

volumes:
  - name: "data-vol"
    emptyDir: {}
  - name: "data-vol"        # DUPLICATE! Kubernetes rejects this.
    configMap:
      name: "my-configmap"

volumeMounts:
  - name: "data-vol"
    mountPath: "/old/path"
  - name: "data-vol"        # DUPLICATE!
    mountPath: "/new/path"

After (this fix) — merge-by-name overrides (VALID)

volumes:
  - name: "data-vol"        # Overridden in place by the config value
    configMap:
      name: "my-configmap"

volumeMounts:
  - name: "data-vol"        # Overridden in place
    mountPath: "/new/path"

Motivated by: https://redhat.atlassian.net/browse/OCPBUGS-76380

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[openshift-ci]

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[Copilot]

Pull request overview

This PR updates the operator-controller’s DeploymentConfig rendering logic to merge volumes and volumeMounts by name (overriding existing entries) rather than blindly appending, aligning behavior with legacy OLM injection semantics. It also adds unit and e2e coverage around the expected volume/volumeMount application.

Changes:

• Change DeploymentConfig rendering to merge volumes and volumeMounts by name (override on collision).
• Add unit tests verifying override-vs-append behavior for volumes and volumeMounts.
• Add an e2e scenario intended to validate that configured volumes/volumeMounts appear on the operator Deployment.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
test/e2e/features/install.feature	Adds an e2e scenario asserting DeploymentConfig volumes/volumeMounts are applied.
internal/operator-controller/rukpak/render/registryv1/generators/generators_test.go	Adds unit tests to validate merge behavior for volumes and volumeMounts.
internal/operator-controller/rukpak/render/registryv1/generators/generators.go	Implements merge-by-name logic for volumes and volumeMounts and wires it into DeploymentConfig application.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.78%. Comparing base (a307a6d) to head (6b57386).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2582      +/-   ##
==========================================
+ Coverage   65.84%   67.78%   +1.94%     
==========================================
  Files         137      137              
  Lines        9560     9574      +14     
==========================================
+ Hits         6295     6490     +195     
+ Misses       2795     2585     -210     
- Partials      470      499      +29     

Flag	Coverage Δ
e2e	38.10% <0.00%> (+26.91%)	⬆️
experimental-e2e	50.95% <0.00%> (-0.12%)	⬇️
unit	52.87% <100.00%> (+0.06%)	⬆️

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

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[pedjak]

/lgtm