CNTRLPLANE-3857: Replace per-controller HCP finalizers with status conditions for deletion cleanup - #9137
CNTRLPLANE-3857: Replace per-controller HCP finalizers with status conditions for deletion cleanup#9137PoornimaSingour wants to merge 4 commits into
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Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review. 📝 WalkthroughWalkthroughThe API adds Sequence Diagram(s)sequenceDiagram
participant HostedControlPlane
participant PrivateConnectivityController
participant CloudProvider
participant HostedControlPlaneController
HostedControlPlane->>PrivateConnectivityController: deletion event
PrivateConnectivityController->>CloudProvider: clean private connectivity resources
CloudProvider-->>PrivateConnectivityController: cleanup result
PrivateConnectivityController->>HostedControlPlane: set PrivateConnectivityCleanedUp=True
HostedControlPlaneController->>HostedControlPlane: read condition
HostedControlPlaneController->>HostedControlPlane: continue deletion, requeue, or record timeout
Suggested reviewers: Merge Risk: ⚪ Minimal · up to This PR changes deletion cleanup to use a shared status condition and timeout fallback, with no actionable merge-blocking risk remaining based on the supplied evidence. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (1 error)
✅ Passed checks (10 passed)
Full details: Stable And Deterministic Test NamesExplanation PASS: The pull request adds only static test names. The new table-driven labels in the AWS, Azure, and HostedControlPlane test files are fixed string literals, and the added Test* identifiers are static. No changed file contains Ginkgo It/Describe/Context/When/By/Entry titles. The only runtime-derived t.Run title found in the HostedControlPlane test file predates this pull request, so it is not caused by these changes. Full details: Test Structure And QualityExplanation PASS. The changed tests use Go's Full details: Topology-Aware Scheduling CompatibilityExplanation PASS — The pull request changes API conditions, deletion cleanup logic, controller watches, finalizers, and tests. The complete diff from the merge base adds no Deployment, StatefulSet, DaemonSet, or Pod scheduling configuration. It adds no anti-affinity, topology spread constraint, node selector or affinity, toleration, replica-count, maxUnavailable, or PDB constraint. Therefore, it introduces no topology-dependent scheduling assumption. Full details: Ipv6 And Disconnected Network Test CompatibilityExplanation The PR adds only Go unit tests in the three changed test files. AST inspection shows Full details: No-Weak-CryptoExplanation PASS: The pull request introduces no MD5, SHA-1, DES, 3DES, RC4, Blowfish, or ECB usage. The changed production code only adds private-connectivity cleanup, finalizer, watch, and status-condition logic. Added-line scans found no cryptographic API calls or custom crypto implementations, and no secret or token comparisons. Full details: Container-PrivilegesExplanation PASS. The pull request changes only Go source/tests, API/vendor Go files, and generated Markdown. It adds no YAML, YAML, or JSON container/Kubernetes manifests. No added diff line contains Full details: No-Sensitive-Data-In-LogsExplanation The new AWS HCP-deletion path calls Resolution Remove sensitive fields from cleanup logs. Do not log ✨ Finishing Touches🧪 Generate unit tests (beta)
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #9137 +/- ##
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+ Coverage 46.98% 47.28% +0.30%
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Files 786 792 +6
Lines 99106 99881 +775
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+ Hits 46564 47232 +668
- Misses 49392 49465 +73
- Partials 3150 3184 +34
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Actionable comments posted: 1
🧹 Nitpick comments (3)
control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go (1)
4461-4469: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winAdd a case exercising the
wantErrpath.
wantErris declared but never settrue; the only error-return branch inwaitForPrivateConnectivityCleanup(theStatus().Patchfailure during timeout) is untested. AWithInterceptorFuncsclient that failsSubResourcePatchfor the timeout case would close this gap.🧪 Example additional case
{ name: "When status patch fails during timeout handling, it should return error", hcp: &hyperv1.HostedControlPlane{ ObjectMeta: metav1.ObjectMeta{ Name: "test-hcp", Namespace: "test-ns", Finalizers: []string{finalizer}, DeletionTimestamp: ptr.To(metav1.NewTime(time.Now().Add(-15 * time.Minute))), }, }, wantDone: false, wantErr: true, },And build that case's fake client with:
fake.NewClientBuilder(). WithScheme(api.Scheme). WithObjects(tt.hcp). WithStatusSubresource(&hyperv1.HostedControlPlane{}). WithInterceptorFuncs(interceptor.Funcs{ SubResourcePatch: func(...) error { return apierrors.NewConflict(...) }, }). Build()Also applies to: 4581-4587
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go` around lines 4461 - 4469, Add a table-driven test case covering the timeout path in waitForPrivateConnectivityCleanup where the status patch fails, setting wantDone to false and wantErr to true. For that case, construct the fake client with WithStatusSubresource and an interceptor.Funcs SubResourcePatch that returns an error, while preserving the existing client setup for other cases.control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.go (1)
434-495: 🩺 Stability & Availability | 🔵 TrivialVerify platform controllers can still finish cleanup after the HCP is fully deleted.
The 10-minute timeout lets
reconcileDeletiondrop the finalizer and allow the HCP to be garbage-collected even ifPrivateConnectivityCleanedUpnever becameTrue. If the AWS EndpointService / Azure PLS reconcilers'reconcileHCPDeletionpath requires a live HCP object (e.g., toGetit and set the condition, per the mapped-HCP-watch design) in order to proceed with cleaning up and removing their own CR finalizers, aNotFoundHCP after this timeout could leave PrivateLink endpoints, Private DNS zones, or VNet links permanently orphaned instead of just delayed.Please confirm the platform controllers tolerate a missing/deleted HCP during their own cleanup path, and consider whether the timeout condition should also emit an event/metric for operator visibility into potentially orphaned private-connectivity resources.
🔍 Suggested verification
#!/bin/bash # Check how AWS/Azure controllers handle a missing HCP during their HCP-deletion cleanup path. rg -n -B3 -A15 'func .*reconcileHCPDeletion' control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go control-plane-operator/controllers/azureprivatelinkservice/controller.go # Look for IsNotFound handling around the HCP Get call in this path. rg -n -B5 -A5 'apierrors.IsNotFound' control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go control-plane-operator/controllers/azureprivatelinkservice/controller.go🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.go` around lines 434 - 495, Verify the AWS and Azure private-connectivity controllers’ reconcileHCPDeletion paths tolerate a missing HCP after HostedControlPlaneReconciler removes its finalizer; handle NotFound safely if those paths currently require the object to complete cleanup. Also add the established event or metric emission when waitForPrivateConnectivityCleanup records a timeout, preserving the existing timeout condition and deletion flow.control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go (1)
383-402: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winSilent failure on HCP mapping list error.
If
r.Listfails here, the function just returnsnilwith no log, unlike the Azure counterpart (mapHCPToAzurePLS) which logs the error. A transient list failure during HCP deletion would silently prevent reconcile requests from being generated for siblingAWSEndpointServiceobjects, with no trace for debugging a stalled deletion.♻️ Proposed fix
awsEndpointServiceList := &hyperv1.AWSEndpointServiceList{} if err := r.List(ctx, awsEndpointServiceList, client.InNamespace(hcp.Namespace)); err != nil { + logr.FromContextOrDiscard(ctx).Error(err, "failed to list AWSEndpointService resources for HCP mapping", "namespace", hcp.Namespace) return nil }🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go` around lines 383 - 402, Update mapHCPToAWSEndpointServices to log the error returned by r.List before returning nil, matching the error-reporting behavior of mapHCPToAzurePLS. Preserve the existing request generation and nil return behavior.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In
`@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.go`:
- Around line 2091-2393: Rename the new tests and table-driven case names in
TestMapHCPToAWSEndpointServices, TestGetHostedControlPlane, and
TestAllEndpointServicesCleanedUp to follow the repository’s “When ... it should
...” convention, preserving each case’s behavior. Rename
TestReconcileHCPDeletion_CRBeingDeleted to describe the deletion condition and
expected immediate return using the same format.
---
Nitpick comments:
In
`@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go`:
- Around line 383-402: Update mapHCPToAWSEndpointServices to log the error
returned by r.List before returning nil, matching the error-reporting behavior
of mapHCPToAzurePLS. Preserve the existing request generation and nil return
behavior.
In
`@control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go`:
- Around line 4461-4469: Add a table-driven test case covering the timeout path
in waitForPrivateConnectivityCleanup where the status patch fails, setting
wantDone to false and wantErr to true. For that case, construct the fake client
with WithStatusSubresource and an interceptor.Funcs SubResourcePatch that
returns an error, while preserving the existing client setup for other cases.
In
`@control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.go`:
- Around line 434-495: Verify the AWS and Azure private-connectivity
controllers’ reconcileHCPDeletion paths tolerate a missing HCP after
HostedControlPlaneReconciler removes its finalizer; handle NotFound safely if
those paths currently require the object to complete cleanup. Also add the
established event or metric emission when waitForPrivateConnectivityCleanup
records a timeout, preserving the existing timeout condition and deletion flow.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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api/hypershift/v1beta1/hostedcluster_conditions.gocontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.gocontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.gocontrol-plane-operator/controllers/azureprivatelinkservice/controller.gocontrol-plane-operator/controllers/azureprivatelinkservice/controller_test.gocontrol-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.gocontrol-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go
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Review: CNTRLPLANE-3857 — HCP finalizers → status conditions
Core design is sound — condition-based coordination with timeout fallback is the right pattern, and waitForPrivateConnectivityCleanup being platform-agnostic is good DIP.
Blocking
1. GCP private clusters: forced 10-min deletion timeout regression
support/netutil/visibility.go:IsPrivateHCP() returns true for GCP (GCPEndpointAccessPrivate, GCPEndpointAccessPublicAndPrivate), but the GCP PSC controller (control-plane-operator/controllers/gcpprivateserviceconnect/) is untouched and never sets PrivateConnectivityCleanedUp. Every GCP private deletion will wait the full timeout, then write a misleading PrivateConnectivityCleanupTimedOut condition. The API comment also lists "GCP PSC endpoints" as covered, which is inaccurate.
Fix: gate on platforms that implement the signal:
if netutil.IsPrivateHCP(hostedControlPlane) &&
(hostedControlPlane.Spec.Platform.Type == hyperv1.AWSPlatform ||
hostedControlPlane.Spec.Platform.Type == hyperv1.AzurePlatform) {2. Reason values are bare string literals
awsprivatelink_controller.go and azureprivatelinkservice/controller.go both use Reason: "CleanupComplete" as a literal. The timeout reason is an unexported local const in hostedcontrolplane_controller.go. The established pattern in hostedcluster_conditions.go exports all reason constants. Define and use exported constants.
3. Condition placement in API
api/hypershift/v1beta1/hostedcluster_conditions.go: the new constant is in the // Bubble up from HCP. section but is never propagated to HC. The docs (aggregated-docs.md, api.md) also add it to the HC condition table. Either bubble it up, or move it to an HCP-only section with a comment.
Should fix
4. awsprivatelink_controller.go mapHCPToAWSEndpointServices: old enqueueOnAccessChange fired on EndpointAccess spec changes; new handler only triggers on DeletionTimestamp. EndpointAccess is not // +immutable in the API. Either restore reactivity or document the intent.
5. hostedcontrolplane_controller.go waitForPrivateConnectivityCleanup: uses time.Since() but the reconciler has clock clock.Clock. Use r.clock.Since() for testability.
6. awsprivatelink_controller.go mapHCPToAWSEndpointServices: List error silently dropped without logging. Old handler logged this. Add ctrl.LoggerFrom(ctx).Error(...).
7. awsprivatelink_controller_test.go: reconcileHCPDeletion happy path (finalizer present → cleanup → condition set) has zero test coverage. Azure has equivalent tests; AWS does not. Also missing: requeue-when-partial and status-patch-conflict cases.
8. hostedcontrolplane_controller_test.go TestReconcileDeletion: all cases set empty EndpointAccess so IsPrivateHCP is always false. The new waitForPrivateConnectivityCleanup integration is never exercised.
9. awsprivatelink_controller_test.go: all 10 new table case names don't follow "When...it should..." convention. TestReconcileHCPDeletion_CRBeingDeleted also violates (compare Azure: TestReconcileHCPDeletion_WhenCRIsBeingDeleted_ItShouldReturnImmediately).
Advisory
hostedcontrolplane_controller.go:r.Loginstead ofctrl.LoggerFrom(ctx)— inconsistent with all other helpers in the filehostedcontrolplane_controller.go:privateConnectivityCleanupTimedOutMsgis used as aReason, not aMessage— rename to...Reason- Both
reconcileHCPDeletionfunctions have an identical ~10-line condition-setting block — consider a shared helper insupport/conditions - Dead code guards in both
reconcileHCPDeletion(AWS) andwaitForPrivateConnectivityCleanup(HCP controller) — the checked conditions are already handled by callers hostedcontrolplane_controller_test.goTestWaitForPrivateConnectivityCleanupTrue case: usesReason: "CleanedUp"but controllers set"CleanupComplete"
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Actionable comments posted: 1
🧹 Nitpick comments (3)
control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.go (1)
2548-2562: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winUpdate this assertion if the incomplete-cleanup path starts requeueing.
This test asserts an empty
ctrl.Result{}when anotherAWSEndpointServicestill holds the finalizer. I raised a separate issue oncontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.goLines 619-643 about the missing requeue on that path. If you add the requeue, change this assertion to checkresult.RequeueAfter.🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.go` around lines 2548 - 2562, The deletion reconciliation test around reconcileHCPDeletion currently expects an empty ctrl.Result even when another AWSEndpointService still has the finalizer. If the incomplete-cleanup path in reconcileHCPDeletion is updated to requeue, replace the empty-result assertion with an assertion that validates result.RequeueAfter.control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go (1)
613-616: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low valueHandle conflict on the finalizer update.
r.Updatereturns a conflict error when the cachedAWSEndpointServiceis stale. The function then returns an error, and the controller logs it and retries with rate-limited backoff. The finalizer add path at Line 512 already treats a conflict as a requeue instead of an error. Use the same handling here to avoid error-level noise during HCP deletion.♻️ Proposed conflict handling
controllerutil.RemoveFinalizer(awsEndpointService, finalizer) if err := r.Update(ctx, awsEndpointService); err != nil { + if apierrors.IsConflict(err) { + return ctrl.Result{Requeue: true}, nil + } return ctrl.Result{}, fmt.Errorf("failed to remove finalizer: %w", err) }🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go` around lines 613 - 616, Update the finalizer removal path after controllerutil.RemoveFinalizer in the reconciliation method to detect resource-version conflict errors from r.Update, matching the existing finalizer-add handling near Line 512, and return a requeue result without an error for conflicts. Preserve the current wrapped error behavior for all other update failures.control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go (1)
4539-4570: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winUse a fake clock instead of wall-clock offsets.
HostedControlPlaneReconcilerhas an injectableclockfield, andwaitForPrivateConnectivityCleanupcallsr.clock.Since. The test injectsclock.RealClock{}and encodes the timeout boundary as-15 * time.Minuteand-1 * time.Minuterelative totime.Now(). The test then depends on wall-clock time and on the value ofprivateConnectivityCleanupTimeout.Inject
testingclock.NewFakePassiveClockfromk8s.io/utils/clock/testingand set an explicit elapsed time per case. The boundary conditions then become explicit and deterministic.Also applies to: 4609-4613
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go` around lines 4539 - 4570, Update the private connectivity cleanup tests around waitForPrivateConnectivityCleanup to inject testingclock.NewFakePassiveClock through HostedControlPlaneReconciler.clock instead of clock.RealClock. Set each case’s fake current time and DeletionTimestamp to represent explicit elapsed durations, including the timeout and non-timeout cases, without using time.Now() or relying on privateConnectivityCleanupTimeout.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In
`@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go`:
- Around line 619-643: The reconcileHCPDeletion path in
control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go:619-643
must return ctrl.Result{RequeueAfter: endpointServiceDeletionRequeueDuration}
when allCleanedUp is false, while setting PrivateConnectivityCleanedUp only on
the completed path. Update the pending-sibling test assertion in
control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.go:2548-2562
to validate result.RequeueAfter instead of expecting an empty result.
---
Nitpick comments:
In
`@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.go`:
- Around line 2548-2562: The deletion reconciliation test around
reconcileHCPDeletion currently expects an empty ctrl.Result even when another
AWSEndpointService still has the finalizer. If the incomplete-cleanup path in
reconcileHCPDeletion is updated to requeue, replace the empty-result assertion
with an assertion that validates result.RequeueAfter.
In
`@control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go`:
- Around line 613-616: Update the finalizer removal path after
controllerutil.RemoveFinalizer in the reconciliation method to detect
resource-version conflict errors from r.Update, matching the existing
finalizer-add handling near Line 512, and return a requeue result without an
error for conflicts. Preserve the current wrapped error behavior for all other
update failures.
In
`@control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go`:
- Around line 4539-4570: Update the private connectivity cleanup tests around
waitForPrivateConnectivityCleanup to inject testingclock.NewFakePassiveClock
through HostedControlPlaneReconciler.clock instead of clock.RealClock. Set each
case’s fake current time and DeletionTimestamp to represent explicit elapsed
durations, including the timeout and non-timeout cases, without using time.Now()
or relying on privateConnectivityCleanupTimeout.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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docs/content/reference/aggregated-docs.mdis excluded by!docs/content/reference/aggregated-docs.mddocs/content/reference/api.mdis excluded by!docs/content/reference/api.mdvendor/github.com/openshift/hypershift/api/hypershift/v1beta1/hostedcluster_conditions.gois excluded by!vendor/**,!**/vendor/**
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api/hypershift/v1beta1/hostedcluster_conditions.gocontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.gocontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.gocontrol-plane-operator/controllers/azureprivatelinkservice/controller.gocontrol-plane-operator/controllers/azureprivatelinkservice/controller_test.gocontrol-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.gocontrol-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go
🚧 Files skipped from review as they are similar to previous changes (4)
- api/hypershift/v1beta1/hostedcluster_conditions.go
- control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.go
- control-plane-operator/controllers/azureprivatelinkservice/controller.go
- control-plane-operator/controllers/azureprivatelinkservice/controller_test.go
everettraven
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I'm not sure I'm following why the use of finalizers was not sufficient here as they are intended to delay deletion so that controllers can perform appropriate cleanup logic.
It looks like we still utilize a finalizer that waits for specific states on this new condition.
What is the impact to customers if cleanup times out and we delete the HCP anyways?
From a purely API review standpoint, the condition/reason combinations look fine to me.
| // HCP-only conditions (not propagated to HostedCluster). | ||
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| // PrivateConnectivityCleanedUp is an HCP-only condition that signals whether | ||
| // the platform's private connectivity resources (e.g. AWS PrivateLink endpoints, | ||
| // Azure Private Endpoints) have been cleaned up during HostedControlPlane deletion. | ||
| // Set by the platform controller; gated with a timeout in the CPO deletion path. | ||
| PrivateConnectivityCleanedUp ConditionType = "PrivateConnectivityCleanedUp" | ||
|
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| // PrivateConnectivityCleanupCompleteReason is set when platform controllers have | ||
| // finished cleaning up all private connectivity resources. | ||
| PrivateConnectivityCleanupCompleteReason = "CleanupComplete" | ||
| // PrivateConnectivityCleanupTimedOutReason is set when the cleanup timeout elapsed | ||
| // before the platform controller signaled completion. | ||
| PrivateConnectivityCleanupTimedOutReason = "PrivateConnectivityCleanupTimedOut" |
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Should these be moved to somewhere around
hypershift/api/hypershift/v1beta1/hosted_controlplane.go
Lines 306 to 312 in 40b4225
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@everettraven, Done in 1d6cc18. Moved all three constants (PrivateConnectivityCleanedUp, PrivateConnectivityCleanupCompleteReason, PrivateConnectivityCleanupTimedOutReason) to co-locate with other HCP-only conditions (Available, Degraded, EtcdSnapshotRestored, CVOScaledDown) in api/hypershift/v1beta1/hosted_controlplane.go.
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@everettraven Great questions! Thank you for reviewing the changes.
1. Why not just use finalizers?
Before this change:
- Platform controllers (AWS PrivateLink, Azure PLS) each had their own finalizer on the HCP
- Each finalizer blocked HCP deletion until that controller finished cleanup
- If a controller crashed or got stuck → HCP stuck in Terminating state indefinitely
After this change:
- Platform controllers removed their finalizers from HCP
- Instead, they signal completion by setting the
PrivateConnectivityCleanedUpcondition - CPO's finalizer waits for the condition OR 10 minutes (whichever comes first)
- Migration code actively removes legacy finalizers (azureprivatelinkservice/controller.go:296-305)
The difference: unbounded wait (old) vs bounded wait with timeout (new).
Thanks for confirming the condition/reason combinations look good. Do let me know if you have any more comments on this
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…ns for deletion cleanup Replace per-controller HCP finalizers with a shared PrivateConnectivityCleanedUp status condition to gate HCP deletion on platform-specific cleanup completion. Why: During HCP deletion, platform controllers (AWS PrivateLink, Azure PLS) need to clean up cloud resources before the HCP is removed. The previous approach used per-controller finalizers on the HCP, creating sprawling coupling and ordering issues. Worse, if the CPO restarted mid-deletion, the AWSEndpointService reconciler lost access to AWS credentials (stored in the now-deleted HCP), causing PrivateLink resources to leak. How: - Add PrivateConnectivityCleanedUp condition type to the HCP API - CPO deletion path gates HCP finalizer removal on this condition for private HCPs, with a 10-minute timeout fallback to prevent stuck deletions - AWS PrivateLink controller: switch HCP watch to EnqueueRequestsFromMapFunc, move HCP deletion check before CR finalizer addition, add reconcileHCPDeletion that cleans up each AWSEndpointService and sets the condition when all are done - Azure PLS controller: replace per-controller azure-pls-endpoint-cleanup finalizer with condition-based pattern, add legacy finalizer migration cleanup - Add comprehensive unit tests for all three controllers Ref: CNTRLPLANE-3857
…tion tests Restore the enqueueOnAccessChange HCP watcher that was accidentally dropped when adding mapHCPToAWSEndpointServices, add four new tests for reconcileHCPDeletion covering happy path, partial cleanup, DependencyViolation requeue, and no-finalizer skip, update condition doc comment to remove GCP PSC (not implemented), removed merge conflicts, and regenerate API docs.
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@PoornimaSingour: This pull request references CNTRLPLANE-3857 which is a valid jira issue. Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "5.1.0" version, but no target version was set. DetailsIn response to this:
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docs/content/reference/aggregated-docs.mdis excluded by!docs/content/reference/aggregated-docs.mddocs/content/reference/api.mdis excluded by!docs/content/reference/api.mdvendor/github.com/openshift/hypershift/api/hypershift/v1beta1/hosted_controlplane.gois excluded by!vendor/**,!**/vendor/**vendor/github.com/openshift/hypershift/api/hypershift/v1beta1/hostedcluster_conditions.gois excluded by!vendor/**,!**/vendor/**
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api/hypershift/v1beta1/hosted_controlplane.goapi/hypershift/v1beta1/hostedcluster_conditions.gocontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.gocontrol-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.gocontrol-plane-operator/controllers/azureprivatelinkservice/controller.gocontrol-plane-operator/controllers/azureprivatelinkservice/controller_test.gocontrol-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.gocontrol-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller_test.go
🚧 Files skipped from review as they are similar to previous changes (5)
- control-plane-operator/controllers/azureprivatelinkservice/controller_test.go
- control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller.go
- control-plane-operator/controllers/hostedcontrolplane/hostedcontrolplane_controller.go
- control-plane-operator/controllers/awsprivatelink/awsprivatelink_controller_test.go
- control-plane-operator/controllers/azureprivatelinkservice/controller.go
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…ne.go Move HCP-only condition constants to co-locate with other HCP-only conditions (Available, Degraded, EtcdSnapshotRestored, CVOScaledDown). Enhanced documentation explains the timeout tradeoff: the 10-minute timeout allows HCP deletion to proceed even when cleanup is stuck, trading orphaned cloud resources (recoverable, bounded cost) for avoiding indefinite deletion blocking (unrecoverable without manual intervention). Addresses review feedback from @muraee and @everettraven
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@muraee , I have addressed all the comments you have added here [Review: CNTRLPLANE-3857 — HCP finalizers → status conditions:](#9137 (review)) Response: Blocking #2: Reason Constants - Missing reason constants for the condition Fixed - both reason constants are exported in api/hypershift/v1beta1/hosted_controlplane.go and used consistently across all three controllers: Exported constants (lines 322-330):
Controller usage:
No string literals - all controllers reference the exported constants following the established pattern from hostedcluster_conditions.go. Blocking #3: API Placement Done in 1d6cc18. Moved to api/hypershift/v1beta1/hosted_controlplane.go alongside other HCP-only conditions.Recommendations (Should Fix #4-9) All recommendations (4-9) were addressed in a46ef094bd:
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| originalHCP := hcp.DeepCopy() | ||
| meta.SetStatusCondition(&hcp.Status.Conditions, metav1.Condition{ | ||
| Type: string(hyperv1.PrivateConnectivityCleanedUp), | ||
| Status: metav1.ConditionTrue, | ||
| Reason: hyperv1.PrivateConnectivityCleanupCompleteReason, | ||
| Message: "All AWS PrivateLink resources have been cleaned up", | ||
| }) | ||
| if err := r.Status().Patch(ctx, hcp, client.MergeFromWithOptions(originalHCP, client.MergeFromWithOptimisticLock{})); err != nil { |
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use statuspatching.PatchStatusCondition
| Reason: hyperv1.PrivateConnectivityCleanupCompleteReason, | ||
| Message: "All Azure Private Link Service resources have been cleaned up", | ||
| }) | ||
| if err := r.Status().Patch(ctx, hcp, client.MergeFromWithOptions(originalHCP, client.MergeFromWithOptimisticLock{})); err != nil { |
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use statuspatching.PatchStatusCondition
| Reason: hyperv1.PrivateConnectivityCleanupTimedOutReason, | ||
| Message: fmt.Sprintf("Platform controller did not signal cleanup completion within %s", privateConnectivityCleanupTimeout), | ||
| }) | ||
| if err := r.Client.Status().Patch(ctx, hcp, client.MergeFromWithOptions(originalHCP, client.MergeFromWithOptimisticLock{})); err != nil { |
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use statuspatching.PatchStatusCondition
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Review of the deletion-cleanup refactor (per-controller HCP finalizers -> PrivateConnectivityCleanedUp condition). No crashes, nil-derefs, or resource leaks spotted, and the 10-minute timeout bounds the worst case. Inline notes below: two are behavioral (a concurrent-reconcile race on the AWS condition-set, and a full 10-minute wait for private HCPs that have no endpoint CRs), one is a narrower stuck-finalizer edge case on the Azure legacy finalizer, and the rest are cleanup/consistency nits.
AI-assisted review (Claude Code).
| } | ||
| } | ||
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| allCleanedUp, err := r.allEndpointServicesCleanedUp(ctx, awsEndpointService.Namespace, awsEndpointService.Name) |
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Possible race under concurrent reconciles. With MaxConcurrentReconciles: 10, sibling AWSEndpointService CRs (the common private case: kube-apiserver-private + private-router) can reconcile in parallel. Each removes its own finalizer via r.Update, then allEndpointServicesCleanedUp reads from the informer cache. Under cache lag, both lists can still show the sibling's finalizer, so neither sets PrivateConnectivityCleanedUp. It self-heals when the finalizer-removal write re-triggers reconcile, but if no further HCP/CR event arrives, the CPO falls back to the full 10-minute privateConnectivityCleanupTimeout before removing the HCP finalizer. Consider re-reading uncached (APIReader) here, or requeueing after removing the finalizer to force a fresh check.
| } | ||
| } | ||
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| if netutil.IsPrivateHCP(hostedControlPlane) && |
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Private HCP with zero endpoint CRs always waits the full 10 minutes. IsPrivateHCP() gates the wait unconditionally, but PrivateConnectivityCleanedUp is only ever set when a platform controller reconciles a CR (and the mapHCP* funcs only enqueue when CRs exist). A private cluster whose endpoint CRs were already removed or never created has nothing to enqueue, so the condition stays absent and waitForPrivateConnectivityCleanup returns not-done every minute for 10 minutes, adding a 10-minute delay to every such deletion. Consider short-circuiting when there are no matching CRs in the namespace.
| // Only trigger reconciliation when the HCP has our finalizer; this avoids | ||
| // unnecessary reconciliations for HCPs that are not related to Azure PLS. | ||
| if !controllerutil.ContainsFinalizer(hcp, hcpAzurePLSFinalizerName) { | ||
| if hcp.DeletionTimestamp.IsZero() { |
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Legacy HCP finalizer can be orphaned. mapHCPToAzurePLS only enqueues when PLS CRs exist, and the legacy hcpAzurePLSFinalizerName is only removed by the migration path (needs a non-deleting HCP with the PLS alias available) or by reconcileHCPDeletion (needs a PLS CR to be enqueued). An upgraded HCP that still carries the legacy finalizer but whose PLS CRs were already deleted (or never existed) at deletion time will never get it removed here, because reconcileHCPDeletion never runs, so HCP deletion is blocked until the hypershift-operator force-removes it after the grace period.
| } | ||
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| func (r *HostedControlPlaneReconciler) reconcileDeletion(ctx context.Context, hostedControlPlane *hyperv1.HostedControlPlane) (ctrl.Result, error) { | ||
| func (r *HostedControlPlaneReconciler) reconcileDeletion(ctx context.Context, hostedControlPlane *hyperv1.HostedControlPlane, _ *hyperv1.HostedControlPlane) (ctrl.Result, error) { |
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Unused parameter. reconcileDeletion gains _ *hyperv1.HostedControlPlane, and the caller does a DeepCopy (originalHostedControlPlane) purely to pass it in and have it discarded (the test passes hcp twice). Either an intended final status patch against the original is missing, or the parameter should be dropped.
| if !controllerutil.ContainsFinalizer(hcp, hcpAzurePLSFinalizerName) { | ||
| return ctrl.Result{}, nil | ||
| } | ||
| log.Info("HCP is being deleted, cleaning up Azure resources before setting cleanup condition") |
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Full batch cleanup re-runs on every HCP event during deletion. Because mapHCPToAzurePLS re-enqueues all PLS CRs on every HCP update while DeletionTimestamp is set, reconcileHCPDeletion re-lists all CRs, re-calls reconcileDelete (Azure deletes returning 404), deleteBaseDomainDNSZone, removeAllCRFinalizers, and re-patches, repeatedly for the ~1 minute until the HCP is gone. Consider early-returning once the condition is already True to avoid the redundant Azure API calls and status writes. (AWS has the milder version of this: a redundant empty status patch each cycle.)
| Reason: hyperv1.PrivateConnectivityCleanupCompleteReason, | ||
| Message: "All AWS PrivateLink resources have been cleaned up", | ||
| }) | ||
| if err := r.Status().Patch(ctx, hcp, client.MergeFromWithOptions(originalHCP, client.MergeFromWithOptimisticLock{})); err != nil { |
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Duplicated optimistic-lock condition-set block. This SetStatusCondition + MergeFromWithOptimisticLock + IsConflict/IsNotFound pattern is copy-pasted in three places (AWS reconcileHCPDeletion, Azure reconcileHCPDeletion, and the CPO waitForPrivateConnectivityCleanup), and AWS vs Azure implement the same cleanup-then-signal flow two different ways (per-CR incremental finalizer scan vs. one-shot batch). Worth extracting a shared helper so the condition contract (reasons, conflict handling, message) lives in one place and the two platforms don't drift.
| // elapsed before the platform controller signaled completion. When this occurs, | ||
| // cloud resources (endpoints, DNS zones, security groups) may be orphaned and | ||
| // require manual cleanup. | ||
| PrivateConnectivityCleanupTimedOutReason = "PrivateConnectivityCleanupTimedOut" |
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Inconsistent Reason value convention. PrivateConnectivityCleanupTimedOutReason uses the verbose prefixed value PrivateConnectivityCleanupTimedOut, while its sibling PrivateConnectivityCleanupCompleteReason = CleanupComplete uses the short PascalCase style that matches existing reasons in the codebase (AsExpected, NotFound, ...). Suggest CleanupTimedOut for consistency.
| originalHCP := hcp.DeepCopy() | ||
| controllerutil.RemoveFinalizer(hcp, hcpAzurePLSFinalizerName) | ||
| if err := r.Patch(ctx, hcp, client.MergeFromWithOptions(originalHCP, client.MergeFromWithOptimisticLock{})); err != nil { | ||
| meta.SetStatusCondition(&hcp.Status.Conditions, metav1.Condition{ |
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Missing ObservedGeneration. The PrivateConnectivityCleanedUp condition set here (and in the AWS and CPO paths) omits ObservedGeneration, unlike the sibling AzurePrivateLinkServiceAvailable condition set nearby which sets ObservedGeneration: azPLS.Generation. Consumers using ObservedGeneration to detect staleness will get 0. Consider setting it for consistency.
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Persist SharedVPC role ARNs on AWSEndpointService status so cleanup can recreate AWS clients after a CPO restart. Gate HCP deletion on the private connectivity cleanup condition with a timeout and migrate Azure cleanup to the condition-based flow. Signed-off-by: Poornima Singour <psingour@redhat.com>
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Summary
PrivateConnectivityCleanedUpstatus condition to gate HCP deletion on platform-specific cleanup completionWhy
During HCP deletion, platform controllers (AWS PrivateLink, Azure PLS) need to clean up cloud resources before the HCP is removed. The previous approach had two problems:
azure-pls-endpoint-cleanup) on the HCP, creating sprawling coupling and ordering issuesWhat Changed
PrivateConnectivityCleanedUpcondition typeEnqueueRequestsFromMapFunc, addreconcileHCPDeletionthat cleansup each CR and sets condition when all doneTest Plan
make test— all unit tests passmake verify— lint clean, generated docs up to datePrivateConnectivityCleanedUp=Trueset → HCP finalizer removed → clean deletione2e-aws— CIe2e-azure— CIWhich issue(s) this PR fixes:
Fixes
Ref: CNTRLPLANE-3857
Supersedes: #8499
Summary by CodeRabbit
New Features
Bug Fixes
Tests