Backport use of down plan when domain has deletionTimestamp (#3499)

Author: rjeberhard

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

@@ -1009,14 +1009,21 @@ private String getNamespace() {
 
     @Override
     public Step createSteps() {
+      boolean deleteInProgress = deleting || domainHasDeletionTimestamp();
       Step strategy =
-            new StartPlanStep(liveInfo, deleting ? createDomainDownPlan(liveInfo) : createDomainUpPlan(liveInfo));
-      if (deleting || getDomain() == null) {
+            new StartPlanStep(liveInfo,
+                deleteInProgress ? createDomainDownPlan(liveInfo) : createDomainUpPlan(liveInfo));
+      if (deleteInProgress || getDomain() == null) {
         return strategy;
       } else {
         return DomainValidationSteps.createDomainValidationSteps(getNamespace(), strategy);
       }
     }
+
+    private boolean domainHasDeletionTimestamp() {
+      return Optional.ofNullable(liveInfo.getDomain()).map(Domain::getMetadata)
+              .map(V1ObjectMeta::getDeletionTimestamp).isPresent();
+    }
   }
 
   private static boolean isGenerationChanged(DomainPresenceInfo liveInfo, DomainPresenceInfo cachedInfo) {

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

@@ -340,6 +340,21 @@ void whenDomainShutDown_removeAllPodsServicesAndPodDisruptionBudgets() {
     assertThat(getRunningPDBs(), empty());
   }
 
+  @Test
+  void whenDomainMarkedForDeletion_removeAllPodsServicesAndPodDisruptionBudgets() {
+    defineServerResources(ADMIN_NAME);
+    Arrays.stream(MANAGED_SERVER_NAMES).forEach(this::defineServerResources);
+
+    domain.getMetadata().setDeletionTimestamp(OffsetDateTime.now());
+    DomainPresenceInfo info = new DomainPresenceInfo(domain);
+    // MakeRightOperation is created without forDeletion() similar to list or MODIFIED watch
+    processor.createMakeRightOperation(info).interrupt().withExplicitRecheck().execute();
+
+    assertThat(getRunningServices(), empty());
+    assertThat(getRunningPods(), empty());
+    assertThat(getRunningPDBs(), empty());
+  }
+
   @Test
   void whenDomainShutDown_ignoreNonOperatorServices() {
     defineServerResources(ADMIN_NAME);