fix: deletion not reconciled when merged into eventFilteringUpdate response

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/source/informer/ManagedInformerEventSource.java

@@ -97,6 +97,7 @@ public void changeNamespaces(Set<String> namespaces) {
   public R eventFilteringUpdateAndCacheResource(R resourceToUpdate, UnaryOperator<R> updateMethod) {
     ResourceID id = ResourceID.fromResource(resourceToUpdate);
     log.debug("Starting event filtering and caching update");
+    final boolean wasMarkedForDeletion = resourceToUpdate.isMarkedForDeletion();
     R updatedResource = null;
     try {
       temporaryResourceCache.startEventFilteringModify(id);
@@ -141,7 +142,23 @@ public R eventFilteringUpdateAndCacheResource(R resourceToUpdate, UnaryOperator<
                     ? ((ResourceDeleteEvent) r).isDeletedFinalStateUnknown()
                     : null);
           },
-          () -> log.debug("No new event present after the filtering update"));
+          () -> {
+            log.debug("No new event present after the filtering update");
+            // If the resource was marked for deletion concurrently with this update, the deletion
+            // event arrived at a lower RV than the update result and was deferred then dropped by
+            // doneEventFilterModify (deferred RV < lastOwnUpdatedRV). The API server merges the
+            // deletionTimestamp into the update response, so updatedForLambda already carries it,
+            // but no event was propagated to the reconciler. Trigger one now so the finalizer can
+            // be removed.
+            if (updatedForLambda != null
+                && updatedForLambda.isMarkedForDeletion()
+                && !wasMarkedForDeletion) {
+              log.debug(
+                  "Resource {} was marked for deletion during update, triggering reconciliation",
+                  id);
+              handleEvent(ResourceAction.UPDATED, updatedForLambda, resourceToUpdate, null);
+            }
+          });
     }
   }
 

operator-framework/src/test/java/io/javaoperatorsdk/operator/baseapi/deletionduringstatusupdate/DeletionDuringStatusUpdateCustomResource.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright Java Operator SDK Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.javaoperatorsdk.operator.baseapi.deletionduringstatusupdate;
+
+import io.fabric8.kubernetes.api.model.Namespaced;
+import io.fabric8.kubernetes.client.CustomResource;
+import io.fabric8.kubernetes.model.annotation.Group;
+import io.fabric8.kubernetes.model.annotation.ShortNames;
+import io.fabric8.kubernetes.model.annotation.Version;
+
+@Group("sample.javaoperatorsdk")
+@Version("v1")
+@ShortNames("ddsu")
+public class DeletionDuringStatusUpdateCustomResource
+    extends CustomResource<Void, DeletionDuringStatusUpdateStatus> implements Namespaced {}

operator-framework/src/test/java/io/javaoperatorsdk/operator/baseapi/deletionduringstatusupdate/DeletionDuringStatusUpdateIT.java

@@ -0,0 +1,107 @@
+/*
+ * Copyright Java Operator SDK Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.javaoperatorsdk.operator.baseapi.deletionduringstatusupdate;
+
+import java.time.Duration;
+import java.util.Collections;
+import java.util.concurrent.TimeUnit;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.fabric8.kubernetes.api.model.ObjectMetaBuilder;
+import io.javaoperatorsdk.operator.junit.LocallyRunOperatorExtension;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.awaitility.Awaitility.await;
+
+/**
+ * Regression test for: deletion event dropped when resource is deleted concurrently with a status
+ * update.
+ */
+class DeletionDuringStatusUpdateIT {
+
+  static final String RESOURCE_NAME = "test-resource";
+
+  @RegisterExtension
+  LocallyRunOperatorExtension extension =
+      LocallyRunOperatorExtension.builder()
+          .withReconciler(new DeletionDuringStatusUpdateReconciler())
+          .build();
+
+  @AfterEach
+  void forceCleanup() {
+    // If the test failed, remove the finalizer so the resource can be deleted
+    var res = extension.get(DeletionDuringStatusUpdateCustomResource.class, RESOURCE_NAME);
+    if (res != null) {
+      res.getMetadata().setFinalizers(Collections.emptyList());
+      extension.replace(res);
+      extension.delete(res);
+    }
+  }
+
+  @Test
+  void deletionDuringStatusUpdateTriggersCleanup() throws InterruptedException {
+    var reconciler = extension.getReconcilerOfType(DeletionDuringStatusUpdateReconciler.class);
+
+    extension.create(testResource());
+
+    // Wait until the reconciler is inside the update operation (active-update window is open)
+    assertThat(reconciler.patchStartedLatch.await(30, TimeUnit.SECONDS))
+        .as("reconciler should enter the patch update operation")
+        .isTrue();
+
+    // Issue delete — K8s sets deletionTimestamp while the active-update window is open
+    extension.delete(testResource());
+
+    // Wait for deletionTimestamp to be confirmed on the resource in K8s
+    await()
+        .atMost(Duration.ofSeconds(30))
+        .until(
+            () -> {
+              var res =
+                  extension.get(DeletionDuringStatusUpdateCustomResource.class, RESOURCE_NAME);
+              return res != null && res.isMarkedForDeletion();
+            });
+
+    // Signal the reconciler to proceed with the actual PATCH. K8s will merge deletionTimestamp
+    // into the response - the deletion event (lower RV) is now deferred and will be dropped
+    // without the fix.
+    reconciler.deleteConfirmedLatch.countDown();
+
+    // cleanup() must be called — the deletion must not be silently lost
+    assertThat(reconciler.cleanupCalledLatch.await(30, TimeUnit.SECONDS))
+        .as("cleanup() must be called after the status update that races with the delete")
+        .isTrue();
+
+    // Resource must eventually disappear (finalizer removed)
+    await()
+        .atMost(Duration.ofSeconds(30))
+        .untilAsserted(
+            () ->
+                assertThat(
+                        extension.get(
+                            DeletionDuringStatusUpdateCustomResource.class, RESOURCE_NAME))
+                    .isNull());
+  }
+
+  DeletionDuringStatusUpdateCustomResource testResource() {
+    var resource = new DeletionDuringStatusUpdateCustomResource();
+    resource.setMetadata(new ObjectMetaBuilder().withName(RESOURCE_NAME).build());
+    return resource;
+  }
+}

operator-framework/src/test/java/io/javaoperatorsdk/operator/baseapi/deletionduringstatusupdate/DeletionDuringStatusUpdateReconciler.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright Java Operator SDK Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.javaoperatorsdk.operator.baseapi.deletionduringstatusupdate;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import io.javaoperatorsdk.operator.api.reconciler.Cleaner;
+import io.javaoperatorsdk.operator.api.reconciler.Context;
+import io.javaoperatorsdk.operator.api.reconciler.ControllerConfiguration;
+import io.javaoperatorsdk.operator.api.reconciler.DeleteControl;
+import io.javaoperatorsdk.operator.api.reconciler.Reconciler;
+import io.javaoperatorsdk.operator.api.reconciler.UpdateControl;
+
+@ControllerConfiguration
+public class DeletionDuringStatusUpdateReconciler
+    implements Reconciler<DeletionDuringStatusUpdateCustomResource>,
+        Cleaner<DeletionDuringStatusUpdateCustomResource> {
+
+  final CountDownLatch patchStartedLatch = new CountDownLatch(1);
+  final CountDownLatch deleteConfirmedLatch = new CountDownLatch(1);
+  final CountDownLatch cleanupCalledLatch = new CountDownLatch(1);
+
+  @Override
+  public UpdateControl<DeletionDuringStatusUpdateCustomResource> reconcile(
+      DeletionDuringStatusUpdateCustomResource resource,
+      Context<DeletionDuringStatusUpdateCustomResource> context)
+      throws InterruptedException {
+    if (resource.isMarkedForDeletion()) {
+      return UpdateControl.noUpdate();
+    }
+
+    var status = new DeletionDuringStatusUpdateStatus();
+    status.setReady(true);
+    resource.setStatus(status);
+
+    context
+        .resourceOperations()
+        .resourcePatch(
+            resource,
+            r -> {
+              patchStartedLatch.countDown();
+              try {
+                if (!deleteConfirmedLatch.await(30, TimeUnit.SECONDS)) {
+                  throw new RuntimeException("Timed out waiting for delete confirmation");
+                }
+              } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                throw new RuntimeException(e);
+              }
+              r.getMetadata().setResourceVersion(null);
+              return context.getClient().resource(r).patchStatus();
+            },
+            context.eventSourceRetriever().getControllerEventSource());
+
+    return UpdateControl.noUpdate();
+  }
+
+  @Override
+  public DeleteControl cleanup(
+      DeletionDuringStatusUpdateCustomResource resource,
+      Context<DeletionDuringStatusUpdateCustomResource> context) {
+    cleanupCalledLatch.countDown();
+    return DeleteControl.defaultDelete();
+  }
+}

operator-framework/src/test/java/io/javaoperatorsdk/operator/baseapi/deletionduringstatusupdate/DeletionDuringStatusUpdateStatus.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright Java Operator SDK Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.javaoperatorsdk.operator.baseapi.deletionduringstatusupdate;
+
+public class DeletionDuringStatusUpdateStatus {
+
+  private boolean ready;
+
+  public boolean isReady() {
+    return ready;
+  }
+
+  public void setReady(boolean ready) {
+    this.ready = ready;
+  }
+}