[release-4.18] OCPBUGS-48344: Make the revision controller report degraded on error

pkg/operator/revisioncontroller/revision_controller.go

@@ -7,10 +7,8 @@ import (
 	"strings"
 	"time"
 
-	operatorv1 "github.com/openshift/api/operator/v1"
 	applyoperatorv1 "github.com/openshift/client-go/operator/applyconfigurations/operator/v1"
 	"github.com/openshift/library-go/pkg/controller/factory"
-	"github.com/openshift/library-go/pkg/operator/condition"
 	"github.com/openshift/library-go/pkg/operator/events"
 	"github.com/openshift/library-go/pkg/operator/management"
 	"github.com/openshift/library-go/pkg/operator/resource/resourceapply"
@@ -90,26 +88,28 @@ func NewRevisionController(
 			kubeInformersForTargetNamespace.Core().V1().Secrets().Informer(),
 		).
 		WithSync(c.sync).
+		WithSyncDegradedOnError(operatorClient).
 		ResyncEvery(1*time.Minute).
 		ToController(
-			"RevisionController", // don't change what is passed here unless you also remove the old FooDegraded condition
+			"RevisionController",
 			eventRecorder,
 		)
 }
 
 // createRevisionIfNeeded takes care of creating content for the static pods to use.
 // returns whether or not requeue and if an error happened when updating status.  Normally it updates status itself.
-func (c RevisionController) createRevisionIfNeeded(ctx context.Context, recorder events.Recorder, currentLastAvailableRevision int32) (wroteStatus bool, requeue bool, err error) {
+func (c RevisionController) createRevisionIfNeeded(ctx context.Context, recorder events.Recorder, currentLastAvailableRevision int32) error {
 	isLatestRevisionCurrent, requiredIsNotFound, reason := c.isLatestRevisionCurrent(ctx, currentLastAvailableRevision)
 
 	// check to make sure that the latestRevision has the exact content we expect.  No mutation here, so we start creating the next Revision only when it is required
 	if isLatestRevisionCurrent {
 		klog.V(4).Infof("Returning early, %d triggered and up to date", currentLastAvailableRevision)
-		return false, false, nil
+		return nil
 	}
 
 	nextRevision := currentLastAvailableRevision + 1
 	var createdNewRevision bool
+	var err error
 	// check to make sure no new revision is created when a required object is missing
 	if requiredIsNotFound {
 		err = fmt.Errorf("%v", reason)
@@ -119,41 +119,24 @@ func (c RevisionController) createRevisionIfNeeded(ctx context.Context, recorder
 	}
 
 	if err != nil {
-		status := applyoperatorv1.OperatorStatus().
-			WithConditions(applyoperatorv1.OperatorCondition().
-				WithType(condition.RevisionControllerDegradedConditionType).
-				WithStatus(operatorv1.ConditionTrue).
-				WithReason("ContentCreationError").
-				WithMessage(err.Error()),
-			).
-			WithLatestAvailableRevision(currentLastAvailableRevision)
-		updateError := c.operatorClient.ApplyOperatorStatus(ctx, c.controllerInstanceName, status)
-		if updateError != nil {
-			recorder.Warningf("RevisionCreateFailed", "Failed to create revision %d: %v", nextRevision, err.Error())
-			return true, true, updateError
-		}
-		return true, true, nil
+		return err
 	}
 
 	if !createdNewRevision {
 		klog.V(4).Infof("Revision %v not created", nextRevision)
-		return false, false, nil
+		return nil
 	}
 
 	recorder.Eventf("RevisionTriggered", "new revision %d triggered by %q", nextRevision, reason)
 
 	status := applyoperatorv1.OperatorStatus().
-		WithConditions(applyoperatorv1.OperatorCondition().
-			WithType(condition.RevisionControllerDegradedConditionType).
-			WithStatus(operatorv1.ConditionFalse),
-		).
 		WithLatestAvailableRevision(nextRevision)
 	updateError := c.operatorClient.ApplyOperatorStatus(ctx, c.controllerInstanceName, status)
 	if updateError != nil {
-		return true, true, updateError
+		return updateError
 	}
 
-	return true, false, nil
+	return nil
 }
 
 func nameFor(name string, revision int32) string {
@@ -394,47 +377,23 @@ func (c RevisionController) sync(ctx context.Context, syncCtx factory.SyncContex
 	if latestObservedRevision != 0 && operatorStatus.LatestAvailableRevision != latestObservedRevision {
 		// Then make sure that revision number is what's in the operator status
 		status := applyoperatorv1.OperatorStatus().
-			WithConditions(applyoperatorv1.OperatorCondition().
-				WithType(condition.RevisionControllerDegradedConditionType).
-				WithStatus(operatorv1.ConditionFalse),
-			).
 			WithLatestAvailableRevision(latestObservedRevision)
 		err := c.operatorClient.ApplyOperatorStatus(ctx, c.controllerInstanceName, status)
 		if err != nil {
 			return err
 		}
-		// regardless of whether we made a change, requeue to rerun the sync with updated status
-		return factory.SyntheticRequeueError
+		// we will be called again because the update will self-feed the informer
+		return nil
 	}
 
 	if shouldCreateNewRevision, err := c.revisionPrecondition(ctx); err != nil || !shouldCreateNewRevision {
 		return err
 	}
 
-	wroteStatus, requeue, syncErr := c.createRevisionIfNeeded(ctx, syncCtx.Recorder(), operatorStatus.LatestAvailableRevision)
-	switch {
-	case requeue && syncErr == nil:
-		return factory.SyntheticRequeueError
-	case syncErr != nil:
-		// this is updated in status inside of createRevisionIfNeeded
+	syncErr := c.createRevisionIfNeeded(ctx, syncCtx.Recorder(), operatorStatus.LatestAvailableRevision)
+	if syncErr != nil {
 		return syncErr
-	case wroteStatus:
-		return syncErr
-	}
-
-	// update failing condition
-	status := applyoperatorv1.OperatorStatus().
-		WithConditions(applyoperatorv1.OperatorCondition().
-			WithType(condition.RevisionControllerDegradedConditionType).
-			WithStatus(operatorv1.ConditionFalse),
-		).
-		WithLatestAvailableRevision(operatorStatus.LatestAvailableRevision)
-	updateError := c.operatorClient.ApplyOperatorStatus(ctx, c.controllerInstanceName, status)
-	if updateError != nil {
-		if err == nil {
-			return updateError
-		}
 	}
 
-	return err
+	return nil
 }

pkg/operator/revisioncontroller/revision_controller_test.go

@@ -220,17 +220,8 @@ func TestRevisionController(t *testing.T) {
 			),
 			testConfigs:     []RevisionResource{{Name: "test-config"}},
 			testSecrets:     []RevisionResource{{Name: "test-secret"}},
-			expectSyncError: "synthetic requeue request",
+			expectSyncError: `configmaps "test-config" not found`,
 			validateStatus: func(t *testing.T, status *operatorv1.StaticPodOperatorStatus) {
-				if status.Conditions[0].Type != "RevisionControllerDegraded" {
-					t.Errorf("expected status condition to be 'RevisionControllerFailing', got %v", status.Conditions[0].Type)
-				}
-				if status.Conditions[0].Reason != "ContentCreationError" {
-					t.Errorf("expected status condition reason to be 'ContentCreationError', got %v", status.Conditions[0].Reason)
-				}
-				if !strings.Contains(status.Conditions[0].Message, `configmaps "test-config" not found`) {
-					t.Errorf("expected status to be 'configmaps test-config not found', got: %s", status.Conditions[0].Message)
-				}
 			},
 			validateActions: func(t *testing.T, actions []clienttesting.Action, kclient *fake.Clientset) {
 				createdObjects := filterCreateActions(actions)