⚠️ Rename ClusterObjectSet Ready transient-error reason to RetryableError

[perdasilva]

Description

The ClusterObjectSet Ready condition reports transient, retryable errors (revision engine creation, watch setup, reconcile, preflight validation, object collisions, teardown) with a single catch-all reason. Previously this was Reconciling, which describes controller activity rather than the cause of Ready=False. This renames it to RetryableError, which names the cause and signals recoverability — and is distinct from RollingOut, which already represents healthy in-progress rollout.

Changes

• Rename the reason constant and its value from Reconciling → RetryableError.
• Remove the unused ClusterObjectSetReasonRetrying constant.
• Rename the setRetryingConditions helper → setRetryableErrorConditions.
• Update the ClusterExtension Installed/Progressing mapping, unit tests, comments, and the concept doc to match.

Breaking change

• The emitted Ready reason on the experimental ClusterObjectSet API changes from Reconciling to RetryableError.
• Two exported condition-reason constants are removed/renamed (ClusterObjectSetReasonReconciling, ClusterObjectSetReasonRetrying). go-apidiff will flag these.

Scoped to the experimental API only. The standard ClusterExtension Progressing/Retrying reason is unchanged.

Follow-up

Reclassifying user-actionable failures (object collisions, invalid manifests) from the transient bucket to Blocked is intentionally left to a separate PR.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Cluster object set errors now report the RetryableError reason, clarifying that reconciliation can be retried.
  • Installation failure and progress statuses continue to reflect retryable errors correctly.
• Documentation
  • Updated the Ready condition documentation to describe RetryableError for unknown status when probe observation is blocked.

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[coderabbitai]

📝 Walkthrough

Walkthrough

The ClusterObjectSet Ready reason Reconciling is replaced by RetryableError. Reconciliation error paths set the new reason, and the operator controller uses it to determine installation failure and progressing conditions.

Changes

RetryableError Ready reason

Layer / File(s)	Summary
Reason contract api/v1/clusterobjectset_types.go, docs/draft/concepts/clusterobjectsets.md	The API defines ClusterObjectSetReasonRetryableError in place of the Reconciling and Retrying constants. The condition documentation uses RetryableError for the described Unknown status.
ClusterObjectSet reconciliation errors internal/object-controller/controllers/clusterobjectset_controller.go, internal/object-controller/controllers/clusterobjectset_controller_test.go	Reconciliation, validation, collision, informer, and archive error paths set Ready to RetryableError. Tests expect the new reason. Existing error propagation, requeues, and deadline handling remain unchanged.
Operator condition mapping internal/operator-controller/controllers/common_controller.go, internal/operator-controller/controllers/common_controller_test.go	The operator controller uses RetryableError when determining installation failure and maps it to Retrying. Tests retain the existing expected outcomes for latest and superseded revisions.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~12 minutes

Change: Bug fix

Merge Risk: 🔵 Low · up to 64138

The concept guide misstates the Ready status for retryable probe errors, which may mislead consumers interpreting object-set conditions. Correct the table; the supplied evidence indicates no broader behavior regression.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 64138

The updated controllers agree on the new reason, and reconciliation controls remain unchanged. The main risk is compatibility: conditions written by another version can temporarily lose their failure classification during upgrade or rollback.

Retained concerns

• Low · architecture · inferred: Persisted Ready conditions use a version-specific reason without dual-read compatibility. If the head reads Reconciling, or the base reads RetryableError after rollback, a rolling revision's error is reported as ordinary rollout progress. This affects failure observability during version transitions; actual deployment overlap and duration are unknown.

Security review details

Security Blast Radius

• inferred — The demonstrated propagation is through ClusterObjectSet status into ClusterExtension condition reporting. External reason consumers may also be affected, but their inventory and any security-sensitive use of these conditions are not established.

Trust Boundaries and Controls

• observed — The producer comparison retains the same validation, revision-engine calls, ownership handling, watch setup, and cleanup paths. The changed error branches assign a different status reason without adding callers or changing the authority used to reconcile resources.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 27.27% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 5 files. (1 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the main change: renaming the experimental ClusterObjectSet Ready transient-error reason to RetryableError. It uses the required warning icon prefix.
Description check	✅ Passed	The description explains the change, its motivation, breaking API impact, scope, and deferred work. It omits the repository’s Reviewer Checklist, but the main required information is complete.

Full details: Docstring Coverage

Explanation

Docstring coverage is 27.27% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 5 files. (1 skipped: 1 unsupported.)

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[perdasilva]

overriding apidiff failure, changes are to the experimental set:

Incompatible changes:
    - ClusterObjectSetReasonReconciling: removed
    - ClusterObjectSetReasonRetrying: removed
    Compatible changes:
    - ClusterObjectSetReasonRetryableError: added'

[coderabbitai]

Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at @docs/draft/concepts/clusterobjectsets.md:
- Line 178: Update the `RetryableError` row in the conditions table to show
Ready=False instead of Ready=Unknown, matching the condition emitted by
`setRetryableErrorConditions`.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: eebef2f6-2280-4383-bbd6-d44061e35276

📥 Commits

Reviewing files that changed from the base of the PR and between 4d33ad1 and 641385e.

📒 Files selected for processing (6)

• api/v1/clusterobjectset_types.go
• docs/draft/concepts/clusterobjectsets.md
• internal/object-controller/controllers/clusterobjectset_controller.go
• internal/object-controller/controllers/clusterobjectset_controller_test.go
• internal/operator-controller/controllers/common_controller.go
• internal/operator-controller/controllers/common_controller_test.go

Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 0 remain after this review.

[fao89]

/lgtm

[joelanford]

/approve

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