K8SPG-637: add internal. prefix to operator finalizers (percona#1035)

Author: pooknull

e2e-tests/tests/finalizers/01-assert.yaml

@@ -124,7 +124,7 @@ metadata:
   finalizers:
   - percona.com/delete-pvc
   - percona.com/delete-ssl
-  - percona.com/stop-watchers
+  - internal.percona.com/stop-watchers
 status:
   pgbouncer:
     ready: 3

e2e-tests/tests/finalizers/03-assert.yaml

@@ -124,7 +124,7 @@ metadata:
   finalizers:
   - percona.com/delete-pvc
   - percona.com/delete-ssl
-  - percona.com/stop-watchers
+  - internal.percona.com/stop-watchers
 status:
   pgbouncer:
     ready: 3

percona/controller/pgcluster/controller.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"reflect"
+	"slices"
 	"strings"
 	"time"
 
@@ -861,15 +862,18 @@ func (r *PGClusterReconciler) stopExternalWatcher(ctx context.Context, cr *v2.Pe
 }
 
 func (r *PGClusterReconciler) ensureFinalizers(ctx context.Context, cr *v2.PerconaPGCluster) error {
-	for _, finalizer := range cr.Finalizers {
-		if finalizer == pNaming.FinalizerStopWatchers {
-			return nil
-		}
+	if !slices.Contains(cr.Finalizers, pNaming.FinalizerStopWatchersDeprecated) && slices.Contains(cr.Finalizers, pNaming.FinalizerStopWatchers) {
+		return nil
 	}
 
 	if *cr.Spec.Backups.TrackLatestRestorableTime {
 		orig := cr.DeepCopy()
-		cr.Finalizers = append(cr.Finalizers, pNaming.FinalizerStopWatchers)
+		cr.Finalizers = slices.DeleteFunc(cr.Finalizers, func(f string) bool {
+			return f == pNaming.FinalizerStopWatchersDeprecated
+		})
+		if !slices.Contains(cr.Finalizers, pNaming.FinalizerStopWatchers) {
+			cr.Finalizers = append(cr.Finalizers, pNaming.FinalizerStopWatchers)
+		}
 		if err := r.Client.Patch(ctx, cr.DeepCopy(), client.MergeFrom(orig)); err != nil {
 			return errors.Wrap(err, "patch finalizers")
 		}

percona/naming/finalizers.go

@@ -4,12 +4,18 @@ package naming
 const (
 	FinalizerDeletePVC     = PrefixPercona + "delete-pvc"
 	FinalizerDeleteSSL     = PrefixPercona + "delete-ssl"
-	FinalizerStopWatchers  = PrefixPercona + "stop-watchers" //nolint:gosec
+	FinalizerStopWatchers  = PrefixPerconaInternal + "stop-watchers" //nolint:gosec
 	FinalizerDeleteBackups = PrefixPercona + "delete-backups"
+
+	FinalizerStopWatchersDeprecated = PrefixPercona + "stop-watchers" //nolint:gosec
 )
 
 // PerconaPGRestore finalizers
 const (
-	FinalizerDeleteRestore = PrefixPercona + "delete-restore" //nolint:gosec
-	FinalizerDeleteBackup  = PrefixPercona + "delete-backup"  //nolint:gosec
+	FinalizerDeleteRestore = PrefixPerconaInternal + "delete-restore" //nolint:gosec
+)
+
+// PerconaPGBackup finalizers
+const (
+	FinalizerDeleteBackup = PrefixPerconaInternal + "delete-backup" //nolint:gosec
 )

percona/naming/prefix.go

@@ -3,9 +3,10 @@ package naming
 import "strings"
 
 const (
-	PrefixPercona     = "percona.com/"
-	PrefixPerconaPGV2 = "pgv2.percona.com/"
-	PrefixCrunchy     = "postgres-operator.crunchydata.com/"
+	PrefixPercona         = "percona.com/"
+	PrefixPerconaInternal = "internal." + PrefixPercona
+	PrefixPerconaPGV2     = "pgv2.percona.com/"
+	PrefixCrunchy         = "postgres-operator.crunchydata.com/"
 )
 
 func ToCrunchyAnnotation(annotation string) string {