OWLS-93960 - NPE fix in PodDisruptionBudgetHelper (#2633)

* OWLS-93960- Fix to avoid NPE when non-operator PodDisruptionBudgets are present in the domain namespace.

* Remove the DOMAINUID_LABEL and DOMAINNAME_LABEL label from PDB.

Author: ankedia

operator/src/main/java/oracle/kubernetes/operator/NamespacedResources.java

@@ -27,6 +27,9 @@
 import oracle.kubernetes.operator.work.Step;
 import oracle.kubernetes.weblogic.domain.model.DomainList;
 
+import static oracle.kubernetes.operator.LabelConstants.forDomainUidSelector;
+import static oracle.kubernetes.operator.LabelConstants.getCreatedByOperatorSelector;
+
 /**
  * A Class to manage listing Kubernetes resources associated with a namespace and doing processing on them.
  */
@@ -164,7 +167,7 @@ private Step getPodDisruptionBudgetListSteps() {
   }
 
   private Step createPodDisruptionBudgetListStep(List<Consumer<V1beta1PodDisruptionBudgetList>> processing) {
-    return new CallBuilder()
+    return new CallBuilder().withLabelSelectors(forDomainUidSelector(domainUid), getCreatedByOperatorSelector())
             .listPodDisruptionBudgetAsync(namespace, new ListResponseStep<>(processing));
   }
 

operator/src/test/java/oracle/kubernetes/operator/DomainProcessorTest.java

@@ -491,6 +491,18 @@ void whenDomainShutDown_ignoreNonOperatorPodDisruptionBudgets() {
     assertThat(getRunningPDBs(), contains(createNonOperatorPodDisruptionBudget()));
   }
 
+  @Test
+  void whenMakeRightExecuted_ignoreNonOperatorPodDisruptionBudgets() {
+    defineServerResources(ADMIN_NAME);
+    Arrays.stream(MANAGED_SERVER_NAMES).forEach(this::defineServerResources);
+    testSupport.defineResources(createNonOperatorPodDisruptionBudget());
+
+    DomainPresenceInfo info = new DomainPresenceInfo(domain);
+    processor.createMakeRightOperation(info).interrupt().withExplicitRecheck().execute();
+
+    assertThat(info.getPodDisruptionBudget(CLUSTER), notNullValue());
+  }
+
   @Test
   void whenClusterReplicas2_server3WithAlwaysPolicy_establishMatchingPresence() {
     domainConfigurator.configureCluster(CLUSTER).withReplicas(2);
@@ -732,10 +744,7 @@ private V1beta1PodDisruptionBudget createNonOperatorPodDisruptionBudget() {
                             .name("do-not-delete-pdb")
                             .namespace(NS)
                             .putLabelsItem("serviceType", "SERVER")
-                            .putLabelsItem(CREATEDBYOPERATOR_LABEL, "false")
-                            .putLabelsItem(DOMAINNAME_LABEL, DomainProcessorTestSetup.UID)
-                            .putLabelsItem(DOMAINUID_LABEL, DomainProcessorTestSetup.UID)
-                            .putLabelsItem(CLUSTERNAME_LABEL, CLUSTER))
+                            .putLabelsItem(CREATEDBYOPERATOR_LABEL, "false"))
             .spec(new V1beta1PodDisruptionBudgetSpec()
                     .selector(new V1LabelSelector()
                             .putMatchLabelsItem(CREATEDBYOPERATOR_LABEL, "false")