[fao89]

Description

Fixes OPRUN-4782.

A completed ClusterObjectSet can retain Ready=True after its referenced source
Secret is replaced. Packed sources remain owned by ClusterExtension in the
CE → COD → COS flow, so an owner-based watch for ClusterObjectSet does not
notify the revisions using those sources. Ownerless and shared sources have
the same gap.

Map Secret metadata events through a cached namespace/name reference index to
every referencing revision. Source replacement now triggers digest verification
after completion, and restoring the original content triggers recovery without
editing the ClusterObjectSet.

• Retain direct API payload reads across namespaces and watch metadata only.
  This avoids retaining unrelated Secret payloads or coordinating independent
  payload and metadata informers.
• Read each distinct Secret once per reconciliation and share the verified
  snapshot with manifest decoding. Return read failures, including NotFound,
  before decoding so newly created or replaced sources cannot bypass verification.
• Record initial phase digests after finalizer patching so the first reconcile
  preserves the content baseline.
• Preserve upstream condition and retry behavior: mutable or invalid content
  reports PreconditionsNotMet with the ten-second fallback retry, while
  transient read failures use controller-runtime backoff. Expected mutable-source
  waiting is logged at debug level.
• Keep verification and decoding in the snapshot reader and remove the unused
  watch-mode configuration.

The older integrated COS manager and its payload-cache configuration are no
longer part of the current controller registration path.

Verification

Local validation passed:

make test-unit
make lint
make verify
make build

The full unit suite includes race detection. Focused regressions cover:

• A COD-created revision with a CE-owned source, COS-owned and ownerless sources,
  and two revisions sharing one Secret.
• Replacement and restoration after completion, plus mutable-source recovery.
• Namespace isolation, distinct data keys, duplicate references, and unrelated Secrets.
• Replacement after successful verification but before decoding: the engine
  receives the verified content, and the next reconciliation reads the replacement.
• Missing/transient read failures, read reuse, and initial digest preservation.

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

Summary by CodeRabbit

• Bug Fixes
  • Reconciliation now detects when a referenced Secret is missing or cannot be read, and retries instead of proceeding with incomplete information.
  • Mutable referenced Secrets block reconciliation until they are made immutable; the controller retries automatically.
  • Reconciliation detects when referenced Secret content changes from the expected content and blocks rollout. Restoring the expected content allows reconciliation to proceed without changing the managed objects.

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Walkthrough

The controller now reads referenced Secrets through a per-reconciliation cache. Lookup failures trigger retries, while mutable Secrets block reconciliation and requeue after 10 seconds. A metadata watch enqueues owning ClusterObjectSets when Secret resource versions change.

Changes: Referenced Secret reconciliation

Layer / File(s)	Summary
Secret reads, resolution, and immutability internal/object-controller/controllers/referenced_secrets.go, internal/object-controller/controllers/clusterobjectset_controller.go, internal/object-controller/controllers/clusterobjectset_controller_internal_test.go, internal/object-controller/controllers/referenced_secrets_test.go, internal/object-controller/controllers/resolve_ref_test.go	A reader caches successful Secret reads by namespace and name during each reconciliation. Resolution and immutability checks use that reader. Tests cover repeated references, refreshed reads, content changes, and missing Secrets.
Reconciliation outcomes and Secret watch internal/object-controller/controllers/clusterobjectset_controller.go, internal/object-controller/controllers/referenced_secrets_test.go, cmd/object-controller/main_test.go	Read errors set a retrying condition and return an error. Mutable Secrets set a blocked condition and requeue after 10 seconds. A Secret metadata cache enqueues owning ClusterObjectSets on resource version changes. Tests cover retry and requeue outcomes and changed Secret content.

Priority: Low

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant SecretAPI
  participant SecretMetadataCache
  participant ClusterObjectSetController
  participant referencedSecretReader
  SecretAPI->>SecretMetadataCache: Secret metadata resource version changes
  SecretMetadataCache->>ClusterObjectSetController: Enqueue owning ClusterObjectSet
  ClusterObjectSetController->>referencedSecretReader: Resolve and verify referenced Secret
  referencedSecretReader->>SecretAPI: Read Secret

Loading

Suggested reviewers: perdasilva

Merge Risk: Moderate · previous review 7b29f

Replacing or restoring an owned system-namespace Secret can leave its ClusterObjectSet incorrectly succeeded or blocked until another reconciliation occurs. Use uncached Secret reads before merging.

Security architecture risk: Moderate · up to 7b29f

The change improves retry recovery and keeps verification and decoding consistent within each reconciliation. However, the integrated deployment can still read cached Secret content after receiving an independently delivered metadata event, potentially delaying replacement detection or leaving restoration blocked. No additional content-read privileges or application-authorization bypass were established.

Retained concerns

• Medium · reliability · inferred: The new metadata watch and the integrated system-namespace content cache have independent delivery ordering. A replacement or restoration event can enqueue reconciliation before cached content refreshes. Reading the previous snapshot can leave completion unchanged or retain content-change blocking; neither terminal path schedules a refresh retry. This can strand recovery or delay the content-integrity check until another event. Standalone direct reads avoid this particular cache-ordering problem.

Security review details

Security Blast Radius

• inferred — Metadata observation spans namespaces, while an individual matching owner event targets a ClusterObjectSet. The supplied integrated Helm binding targets cluster-admin, so affected application control flow is not inherently confined to the source Secret's namespace. This establishes deployment authority, not a new privilege grant or a demonstrated escalation.

Trust Boundaries and Controls

• observed — The PR preserves namespace-qualified Secret identity and requires immutable content before decoding. Recorded phase digests are checked before application. A Secret event alone does not authorize its data for application, and the inspected base/head comparison leaves content-client routing unchanged.

Resilience and Maintainability Implications

• inferred — Unowned referenced Secrets still lack a guaranteed replacement-driven refresh path after completion or content-change blocking. This limitation predates the PR: the new owner watch improves coverage for owned Secrets but does not provide reference-indexed recovery for every valid reference.

Hardening Proposals

• proposed — Use authoritative Secret content reads for the integrated reconciliation path, or establish an explicit refresh guarantee between metadata delivery and content consumption. Validate replacement and restoration with the integrated cache configuration, including unchanged-status terminal states.

Pre-merge checks: 4

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Title check		The title clearly identifies the main change: reconciling when a referenced source Secret changes. The bug icon is also valid for this patch.
Description check		The description explains the problem, implementation, motivation, issue link, verification results, and regression coverage. It includes the required sections and checklist, although the checklist ite…

Full details: Description check

Explanation

The description explains the problem, implementation, motivation, issue link, verification results, and regression coverage. It includes the required sections and checklist, although the checklist items remain unchecked.

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[perdasilva]

@fao89 would it be worth updating the setup to have the controller watch the ClusterObjectSet owned secrets? That way when there's a change it will unblock?

[fao89]

@perdasilva Done. Added a metadata-only Secret watch that enqueues COS owners on create/update/delete events. It uses a separate cache so references in any namespace work independently of the integrated manager's pull-secret cache, without caching Secret contents. The 10-second requeue remains for unowned references. Extended the live-manager envtest to verify that replacing an owned Secret blocks a completed COS and restoring the original content resumes reconciliation without editing the COS.

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Actionable comments posted: 1

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Inline comments:
Review comments at
@internal/object-controller/controllers/clusterobjectset_controller.go:
- Line 134: Update secretFallbackClient.Get so every corev1.Secret is read
through its apiReader, regardless of namespace, while non-Secret objects
continue using the cached client. Keep referencedSecretReader’s
per-reconciliation deduplication unchanged.

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ℹ️ Review info

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Configuration used: defaults

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Run ID: 796be641-f7cd-43cb-8f7e-f7198d840f8e

📥 Commits

Reviewing files that changed from the base of the PR and between 18dfd75 and 7b29f6e.

📒 Files selected for processing (6)

• cmd/object-controller/main_test.go
• internal/object-controller/controllers/clusterobjectset_controller.go
• internal/object-controller/controllers/clusterobjectset_controller_internal_test.go
• internal/object-controller/controllers/referenced_secrets.go
• internal/object-controller/controllers/referenced_secrets_test.go
• internal/object-controller/controllers/resolve_ref_test.go

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