[perdasilva]

Description

Today the ClusterObjectDeployment (COD) Progressing condition collapses every in-flight rollout into a single opaque reason (NewClusterObjectSetProgressing) whenever the head active ClusterObjectSet (COS) revision has not completed. A user cannot tell a rollout that is merely in progress from one that is stalled on something they must fix.

This PR maps the head active revision's own Ready reason onto the COD Progressing condition using a small, COD-level vocabulary, following Kubernetes condition conventions:

Head COS Ready reason	COD Progressing	COD reason
Pending, ObjectsNotReady	True	NewClusterObjectSetProgressing (existing)
PreconditionsNotMet	True (keeps retrying)	RevisionPreconditionsNotMet (new)
ObjectCollision	False (hard stall)	RevisionObjectCollision (new)
InvalidSpecification	False (hard stall)	RevisionInvalidSpecification (new)

Key behaviors:

• Hard stalls short-circuit the progress deadline — a revision already stalled on an actionable cause reports that reason rather than ProgressDeadlineExceeded (more useful), even once the deadline elapses. The deadline still governs the still-retrying states.
• PreconditionsNotMet keeps Progressing=True because the COS controller keeps retrying it.
• The COD reports its own generic message naming the revision and directs the user to inspect the named ClusterObjectSet for the specific cause (Deployment→Pod inspection pattern); it does not echo the COS message.
• The COD's own InvalidSpecification (invalid spec.template.metadata, set before a revision exists) stays distinct from the revision's RevisionInvalidSpecification.

Testing

• Unit tests cover every branch (including no/unrecognized Ready reason, completed-wins-over-stall) and the hard-stall-beats-deadline precedence (deadline exceeded + a stall Ready reason → the stall reason wins).
• e2e (cod_progressing_reasons.feature, 4 scenarios / 36 steps, validated locally against the experimental cluster):
  • RevisionObjectCollision and RevisionPreconditionsNotMet, each including recovery once the condition is resolved;
  • ProgressDeadlineExceeded for a revision that never becomes ready (consolidated here from the former cod_progression_timeout.feature, now removed);
  • hard-stall-beats-deadline: a collision keeps reporting RevisionObjectCollision consistently for 70s, spanning past the 1-minute deadline (via a new consistently reports … for <duration> step), so a controller that let the deadline win would be caught.
• make lint and make verify clean.

Notes

• RevisionInvalidSpecification is covered by unit tests only — that COS state is not reliably reachable from an admission-passing COD template.

Reviewer notes

Experimental API surface only (COD lives behind the experimental feature gate). No ClusterObjectSet controller, migrator, or CRD schema-shape changes; the conditions field docstring update regenerates the CRDs and API reference.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Incomplete rollouts now report revision-specific reasons when preconditions are unmet, objects conflict with existing resources, or revision objects are invalid. Unmet preconditions are retried; collisions and invalid revision objects are reported as stalled, including when a progress deadline is configured.
• Documentation
  • Updated API references and guides to explain these rollout statuses, distinguish invalid revision objects from invalid deployment metadata, and direct readers to the affected revision for details.

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• test/e2e/features/cod_progressing_reasons.feature
• test/e2e/steps/steps.go

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Walkthrough

The controller now reports revision-specific Progressing reasons for unmet preconditions, object collisions, and invalid revision specifications. API and CRD descriptions and controller and end-to-end tests cover the reasons and their status behavior.

Changes: Progressing reason reporting

Layer / File(s)	Summary
Define and document revision-specific reasons api/v1/clusterobjectdeployment_types.go, applyconfigurations/api/v1/clusterobjectdeploymentstatus.go, docs/api-reference/olmv1-api-reference.md, docs/draft/concepts/clusterobjectsets.md, helm/olmv1/base/object-controller/crd/experimental/olm.operatorframework.io_clusterobjectdeployments.yaml, manifests/experimental*.yaml	Added three exported reason constants and documented their Progressing statuses. The descriptions distinguish revision object errors from invalid deployment template metadata.
Report the head revision’s readiness internal/object-controller/controllers/clusterobjectdeployment_controller.go, internal/object-controller/controllers/clusterobjectdeployment_controller_test.go, internal/object-controller/controllers/clusterobjectdeployment_deadline_test.go	reconcileRollout reports hard stalls as False and unmet preconditions as True. Hard-stall reasons take precedence over deadline expiry. Unit tests cover the reasons and deadline behavior.
Exercise rollout reasons in end-to-end tests test/e2e/features/cod_progressing_reasons.feature, test/e2e/features/cod_progression_timeout.feature, test/e2e/steps/steps.go	End-to-end scenarios cover collision and precondition recovery, deadline expiry, and a collision reason that persists beyond the deadline. A new step checks whether a condition status and reason persist for a specified duration. The previous progression-timeout feature file was removed.

Priority: Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant reconcileRollout
  participant headRevisionReadyCondition
  participant ClusterObjectDeploymentProgressing
  reconcileRollout->>headRevisionReadyCondition: Read Ready condition reason
  headRevisionReadyCondition-->>reconcileRollout: Return reason
  reconcileRollout->>ClusterObjectDeploymentProgressing: Set status, reason, and message

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Possibly related PRs

• operator-framework/operator-controller#3060: Defines COD-level InvalidSpecification; this change distinguishes it from revision-level RevisionInvalidSpecification.
• operator-framework/operator-controller#3055: Defines revision deadline enforcement; this change specifies how revision reasons interact with deadline handling.
• operator-framework/operator-controller#3058: Introduces COD revision rollouts, whose condition behavior this change updates.

Merge Risk: Minimal · previous review 8ba5d

The previously identified end-to-end test risks are addressed. No actionable merge-blocking risk remains after normal checks.

Pre-merge checks: 5

Check name	Status	Explanation
Title check		The title is concise, specific, and accurately summarizes the main change: adding Progressing reasons for impeded head revision rollouts.
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[fgiudici]

/lgtm

[fao89]

/lgtm

[joelanford]

Should this .feature file also include a COD ProgressionDeadlineExceeded test? This seems to be the correct place for it based on the file name.

[perdasilva]

Done — moved the ProgressDeadlineExceeded scenario into this file (never-ready revision + 1m deadline → Progressing=False/ProgressDeadlineExceeded, with the revision retaining ObjectsNotReady and Available=False/Unavailable) and deleted the now-redundant cod_progression_timeout.feature, so all COD Progressing-reason coverage lives here.

[coderabbitai]

Actionable comments posted: 2

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @test/e2e/features/cod_progressing_reasons.feature:
- Around line 239-240: Add an eventual assertion that ClusterObjectDeployment
reports Progressing as False with Reason RevisionObjectCollision between the
ClusterObjectSet assertion and the consistently assertion, so the consistency
window begins only after the COD reaches the expected state.

Review comments at @test/e2e/steps/steps.go:
- Around line 1018-1031: Update consistentlyCondition to tolerate transient
fetch or parse errors only within a bounded gap: track the time since the last
valid condition observation and fail if that gap exceeds the limit, including
when no valid observation occurs. Continue checking every valid observation’s
status and reason throughout the consistency window.

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[fgiudici]

/lgtm

[joelanford]

So we allow flapping of the condition existence or status or reason as long as at least one observation is correct every 10s?

Kinda feels like we should assert that every observation is correct, no? I could see a carve out for transient errors, but otherwise I feel like we should fail if we don't see exactly what we expect every time.

[perdasilva]

I think this is what we are doing. We:

• iterate from now until deadline in tick intervals
• get the condition but ignore condition not found or unmarshal errors
• assert that the condition status and message are what is expected
• tolerate not found and unmarshal errors for the grace period of up to maxObservationGap from the last successfully observed timestamp (remember that we if there is a deviation in status or message the assertions trip)

or did I miss something?

[perdasilva]

so, its theoretically possible that you observe the desired state, get intermittent errors, then continue to observed the desired state and the test passes (as long as the longest intermittent error period isn't > maxObservationGap)

[perdasilva]

Fair point — tolerating the condition fully disappearing isn't really "consistently". The old helper lumped two different "blind" cases into the same 10s grace: a failed API read (true state unknown) and a successful read that simply didn't contain the condition (the condition's actual state — came and went). Only the first deserves tolerance.

Pushed a change that splits them and tightens the semantics:

• A failed API read is treated as transient — tolerated only within a maxTransientGap (10s), so the check still can't pass vacuously if the resource is never readable.
• A successful read that shows the condition absent, or with a different status/reason, now fails immediately. A condition that disappears or changes is no longer forgiven.

While in there I also made the helper generic: consistently(ctx, duration, check) drives the loop (now on wait.PollUntilContextTimeout, so it honors context cancellation), and the condition assertion is its own callback, conditionCheck(...). consistentlyCondition is now a thin wrapper over the two, so callers are unchanged.

[tmshort]

/approve

[joelanford]

/lgtm

[rashmigottipati]

/lgtm

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