refactor: remove now unneeded KubernetesClientAware (#2084)

Author: metacosm

caffeine-bounded-cache-support/src/test/java/io/javaoperatorsdk/operator/processing/event/source/cache/sample/AbstractTestReconciler.java

@@ -6,14 +6,15 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import io.fabric8.kubernetes.api.model.*;
+import io.fabric8.kubernetes.api.model.ConfigMap;
+import io.fabric8.kubernetes.api.model.ConfigMapBuilder;
+import io.fabric8.kubernetes.api.model.HasMetadata;
+import io.fabric8.kubernetes.api.model.ObjectMetaBuilder;
 import io.fabric8.kubernetes.client.CustomResource;
 import io.fabric8.kubernetes.client.KubernetesClient;
 import io.fabric8.kubernetes.client.KubernetesClientBuilder;
 import io.javaoperatorsdk.operator.api.config.informer.InformerConfiguration;
 import io.javaoperatorsdk.operator.api.reconciler.*;
-import io.javaoperatorsdk.operator.api.reconciler.Context;
-import io.javaoperatorsdk.operator.junit.KubernetesClientAware;
 import io.javaoperatorsdk.operator.processing.event.source.EventSource;
 import io.javaoperatorsdk.operator.processing.event.source.cache.BoundedItemStore;
 import io.javaoperatorsdk.operator.processing.event.source.cache.CaffeineBoundedItemStores;
@@ -27,38 +28,35 @@
 import com.github.benmanes.caffeine.cache.Caffeine;
 
 public abstract class AbstractTestReconciler<P extends CustomResource<BoundedCacheTestSpec, BoundedCacheTestStatus>>
-    implements KubernetesClientAware, Reconciler<P>,
-    EventSourceInitializer<P> {
+    implements Reconciler<P>, EventSourceInitializer<P> {
 
   private static final Logger log =
       LoggerFactory.getLogger(BoundedCacheClusterScopeTestReconciler.class);
 
   public static final String DATA_KEY = "dataKey";
 
-  protected KubernetesClient client;
-
   @Override
   public UpdateControl<P> reconcile(
       P resource,
       Context<P> context) {
     var maybeConfigMap = context.getSecondaryResource(ConfigMap.class);
     maybeConfigMap.ifPresentOrElse(
-        cm -> updateConfigMapIfNeeded(cm, resource),
-        () -> createConfigMap(resource));
+        cm -> updateConfigMapIfNeeded(cm, resource, context),
+        () -> createConfigMap(resource, context));
     ensureStatus(resource);
     log.info("Reconciled: {}", resource.getMetadata().getName());
     return UpdateControl.patchStatus(resource);
   }
 
-  protected void updateConfigMapIfNeeded(ConfigMap cm, P resource) {
+  protected void updateConfigMapIfNeeded(ConfigMap cm, P resource, Context<P> context) {
     var data = cm.getData().get(DATA_KEY);
     if (data == null || data.equals(resource.getSpec().getData())) {
       cm.setData(Map.of(DATA_KEY, resource.getSpec().getData()));
-      client.configMaps().resource(cm).replace();
+      context.getClient().configMaps().resource(cm).replace();
     }
   }
 
-  protected void createConfigMap(P resource) {
+  protected void createConfigMap(P resource, Context<P> context) {
     var cm = new ConfigMapBuilder()
         .withMetadata(new ObjectMetaBuilder()
             .withName(resource.getMetadata().getName())
@@ -67,17 +65,7 @@ protected void createConfigMap(P resource) {
         .withData(Map.of(DATA_KEY, resource.getSpec().getData()))
         .build();
     cm.addOwnerReference(resource);
-    client.configMaps().resource(cm).create();
-  }
-
-  @Override
-  public KubernetesClient getKubernetesClient() {
-    return client;
-  }
-
-  @Override
-  public void setKubernetesClient(KubernetesClient kubernetesClient) {
-    this.client = kubernetesClient;
+    context.getClient().configMaps().resource(cm).create();
   }
 
   @Override

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/reconciler/dependent/managed/KubernetesClientAware.java

@@ -1,7 +1,13 @@
 package io.javaoperatorsdk.operator.api.reconciler.dependent.managed;
 
 import io.fabric8.kubernetes.client.KubernetesClient;
+import io.javaoperatorsdk.operator.api.reconciler.Context;
 
+/**
+ * @deprecated It shouldn't be needed to pass a {@link KubernetesClient} instance anymore as the
+ *             client should be accessed via {@link Context#getClient()} instead.
+ */
+@Deprecated(since = "4.5.0", forRemoval = true)
 public interface KubernetesClientAware {
   void setKubernetesClient(KubernetesClient kubernetesClient);
 

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/AbstractExternalDependentResource.java

@@ -1,7 +1,6 @@
 package io.javaoperatorsdk.operator.processing.dependent;
 
 import io.fabric8.kubernetes.api.model.HasMetadata;
-import io.fabric8.kubernetes.client.KubernetesClient;
 import io.javaoperatorsdk.operator.api.reconciler.Context;
 import io.javaoperatorsdk.operator.api.reconciler.dependent.RecentOperationCacheFiller;
 import io.javaoperatorsdk.operator.processing.event.EventSourceRetriever;
@@ -18,7 +17,6 @@ public abstract class AbstractExternalDependentResource<R, P extends HasMetadata
   @SuppressWarnings("rawtypes")
   private DependentResourceWithExplicitState dependentResourceWithExplicitState;
   private InformerEventSource<?, P> externalStateEventSource;
-  private KubernetesClient kubernetesClient;
 
   @SuppressWarnings("unchecked")
   protected AbstractExternalDependentResource(Class<R> resourceType) {
@@ -65,14 +63,13 @@ public void delete(P primary, Context<P> context) {
   @SuppressWarnings({"unchecked", "unused"})
   private void handleExplicitStateDelete(P primary, R secondary, Context<P> context) {
     var res = dependentResourceWithExplicitState.stateResource(primary, secondary);
-    dependentResourceWithExplicitState.getKubernetesClient().resource(res).delete();
+    context.getClient().resource(res).delete();
   }
 
   @SuppressWarnings({"rawtypes", "unchecked", "unused"})
   protected void handleExplicitStateCreation(P primary, R created, Context<P> context) {
     var resource = dependentResourceWithExplicitState.stateResource(primary, created);
-    var stateResource =
-        dependentResourceWithExplicitState.getKubernetesClient().resource(resource).create();
+    var stateResource = context.getClient().resource(resource).create();
     if (externalStateEventSource != null) {
       ((RecentOperationCacheFiller) externalStateEventSource)
           .handleRecentResourceCreate(ResourceID.fromResource(primary), stateResource);
@@ -84,7 +81,7 @@ protected void handleExplicitStateCreation(P primary, R created, Context<P> cont
   public void deleteTargetResource(P primary, R resource, String key,
       Context<P> context) {
     if (isDependentResourceWithExplicitState) {
-      getKubernetesClient()
+      context.getClient()
           .resource(dependentResourceWithExplicitState.stateResource(primary, resource))
           .delete();
     }
@@ -100,18 +97,4 @@ public void handleDeleteTargetResource(P primary, R resource, String key,
   protected InformerEventSource getExternalStateEventSource() {
     return externalStateEventSource;
   }
-
-  /**
-   * It's here just to manage the explicit state resource in case the dependent resource implements
-   * {@link RecentOperationCacheFiller}.
-   *
-   * @return kubernetes client.
-   */
-  public KubernetesClient getKubernetesClient() {
-    return kubernetesClient;
-  }
-
-  public void setKubernetesClient(KubernetesClient kubernetesClient) {
-    this.kubernetesClient = kubernetesClient;
-  }
 }

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/DependentResourceWithExplicitState.java

@@ -4,7 +4,6 @@
 
 import io.fabric8.kubernetes.api.model.HasMetadata;
 import io.javaoperatorsdk.operator.api.reconciler.dependent.Deleter;
-import io.javaoperatorsdk.operator.api.reconciler.dependent.managed.KubernetesClientAware;
 
 /**
  * Handles external resources where in order to address the resource additional information or
@@ -14,7 +13,7 @@
  * for a resource that extends {@link AbstractExternalDependentResource}.
  */
 public interface DependentResourceWithExplicitState<R, P extends HasMetadata, S extends HasMetadata>
-    extends Creator<R, P>, Deleter<P>, KubernetesClientAware {
+    extends Creator<R, P>, Deleter<P> {
 
   /**
    * Only needs to be implemented if multiple event sources are present for the target resource

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/KubernetesDependentResource.java

@@ -8,7 +8,6 @@
 import org.slf4j.LoggerFactory;
 
 import io.fabric8.kubernetes.api.model.HasMetadata;
-import io.fabric8.kubernetes.client.KubernetesClient;
 import io.fabric8.kubernetes.client.dsl.Resource;
 import io.javaoperatorsdk.operator.OperatorException;
 import io.javaoperatorsdk.operator.api.config.dependent.Configured;
@@ -19,7 +18,6 @@
 import io.javaoperatorsdk.operator.api.reconciler.Ignore;
 import io.javaoperatorsdk.operator.api.reconciler.dependent.GarbageCollected;
 import io.javaoperatorsdk.operator.api.reconciler.dependent.managed.DependentResourceConfigurator;
-import io.javaoperatorsdk.operator.api.reconciler.dependent.managed.KubernetesClientAware;
 import io.javaoperatorsdk.operator.processing.dependent.AbstractEventSourceHolderDependentResource;
 import io.javaoperatorsdk.operator.processing.dependent.Matcher.Result;
 import io.javaoperatorsdk.operator.processing.dependent.kubernetes.updatermatcher.GenericResourceUpdaterMatcher;
@@ -33,17 +31,14 @@
     converter = KubernetesDependentConverter.class)
 public abstract class KubernetesDependentResource<R extends HasMetadata, P extends HasMetadata>
     extends AbstractEventSourceHolderDependentResource<R, P, InformerEventSource<R, P>>
-    implements KubernetesClientAware,
-    DependentResourceConfigurator<KubernetesDependentResourceConfig<R>> {
+    implements DependentResourceConfigurator<KubernetesDependentResourceConfig<R>> {
 
   private static final Logger log = LoggerFactory.getLogger(KubernetesDependentResource.class);
-
-  protected KubernetesClient client;
   private final ResourceUpdaterMatcher<R> updaterMatcher;
   private final boolean garbageCollected = this instanceof GarbageCollected;
   private KubernetesDependentResourceConfig<R> kubernetesDependentResourceConfig;
 
-  private boolean usingCustomResourceUpdateMatcher;
+  private final boolean usingCustomResourceUpdateMatcher;
 
   @SuppressWarnings("unchecked")
   public KubernetesDependentResource(Class<R> resourceType) {
@@ -117,7 +112,7 @@ public R create(R desired, P primary, Context<P> context) {
       }
     }
     addMetadata(false, null, desired, primary, context);
-    final var resource = prepare(desired, primary, "Creating");
+    final var resource = prepare(context, desired, primary, "Creating");
     return useSSA(context)
         ? resource
             .fieldManager(context.getControllerConfiguration().fieldManager())
@@ -134,12 +129,12 @@ public R update(R actual, R desired, P primary, Context<P> context) {
     R updatedResource;
     addMetadata(false, actual, desired, primary, context);
     if (useSSA(context)) {
-      updatedResource = prepare(desired, primary, "Updating")
+      updatedResource = prepare(context, desired, primary, "Updating")
           .fieldManager(context.getControllerConfiguration().fieldManager())
           .forceConflicts().serverSideApply();
     } else {
       var updatedActual = updaterMatcher.updateResource(actual, desired, context);
-      updatedResource = prepare(updatedActual, primary, "Updating").update();
+      updatedResource = prepare(context, updatedActual, primary, "Updating").update();
     }
     log.debug("Resource version after update: {}",
         updatedResource.getMetadata().getResourceVersion());
@@ -216,23 +211,23 @@ private boolean usePreviousAnnotation(Context<P> context) {
   @Override
   protected void handleDelete(P primary, R secondary, Context<P> context) {
     if (secondary != null) {
-      client.resource(secondary).delete();
+      context.getClient().resource(secondary).delete();
     }
   }
 
   @SuppressWarnings("unused")
   public void deleteTargetResource(P primary, R resource, String key, Context<P> context) {
-    client.resource(resource).delete();
+    context.getClient().resource(resource).delete();
   }
 
   @SuppressWarnings("unused")
-  protected Resource<R> prepare(R desired, P primary, String actionName) {
+  protected Resource<R> prepare(Context<P> context, R desired, P primary, String actionName) {
     log.debug("{} target resource with type: {}, with id: {}",
         actionName,
         desired.getClass(),
         ResourceID.fromResource(desired));
 
-    return client.resource(desired);
+    return context.getClient().resource(desired);
   }
 
   protected void addReferenceHandlingMetadata(R desired, P primary) {
@@ -292,16 +287,6 @@ protected boolean addOwnerReference() {
     return garbageCollected;
   }
 
-  @Override
-  public void setKubernetesClient(KubernetesClient kubernetesClient) {
-    this.client = kubernetesClient;
-  }
-
-  @Override
-  public KubernetesClient getKubernetesClient() {
-    return client;
-  }
-
   @Override
   protected R desired(P primary, Context<P> context) {
     return super.desired(primary, context);

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

@@ -37,7 +37,6 @@ public abstract class ManagedInformerEventSource<R extends HasMetadata, P extend
 
   private static final Logger log = LoggerFactory.getLogger(ManagedInformerEventSource.class);
   private final InformerManager<R, C> cache;
-
   protected TemporaryResourceCache<R> temporaryResourceCache;
   protected MixedOperation<R, KubernetesResourceList<R>, Resource<R>> client;
 

operator-framework-junit5/src/main/java/io/javaoperatorsdk/operator/junit/KubernetesClientAware.java

@@ -1,7 +1,13 @@
 package io.javaoperatorsdk.operator.junit;
 
 import io.fabric8.kubernetes.client.KubernetesClient;
+import io.javaoperatorsdk.operator.api.reconciler.Context;
 
+/**
+ * @deprecated It shouldn't be needed to pass a {@link KubernetesClient} instance to the reconciler
+ *             anymore as the client should be accessed via {@link Context#getClient()} instead.
+ */
+@Deprecated(since = "4.5.0", forRemoval = true)
 public interface KubernetesClientAware extends HasKubernetesClient {
   void setKubernetesClient(KubernetesClient kubernetesClient);
 }

operator-framework-junit5/src/main/java/io/javaoperatorsdk/operator/junit/LocallyRunOperatorExtension.java

@@ -152,10 +152,6 @@ protected void before(ExtensionContext context) {
         applyCrd(config.getResourceTypeName());
       }
 
-      if (ref.reconciler instanceof KubernetesClientAware) {
-        ((KubernetesClientAware) ref.reconciler).setKubernetesClient(kubernetesClient);
-      }
-
       var registeredController = this.operator.register(ref.reconciler, oconfig.build());
       registeredControllers.put(ref.reconciler, registeredController);
     }

operator-framework/src/test/java/io/javaoperatorsdk/operator/DependentReInitializationIT.java

@@ -31,7 +31,7 @@ private static void startEndStopOperator(KubernetesClient client,
     Operator o1 = new Operator(o -> o
         .withCloseClientOnStop(false)
         .withKubernetesClient(client));
-    o1.register(new DependentReInitializationReconciler(dependent, client));
+    o1.register(new DependentReInitializationReconciler(dependent));
     o1.start();
     o1.stop();
   }

operator-framework/src/test/java/io/javaoperatorsdk/operator/DependentSSAMigrationIT.java

@@ -143,10 +143,9 @@ private DependnetSSACustomResource reconcileWithLegacyOperator(Operator legacyOp
 
   private Operator createOperator(KubernetesClient client, boolean legacyDependentHandling,
       String fieldManager) {
-    Operator operator = new Operator(client,
-        o -> o.withCloseClientOnStop(false));
+    Operator operator =
+        new Operator(o -> o.withKubernetesClient(client).withCloseClientOnStop(false));
     var reconciler = new DependentSSAReconciler(!legacyDependentHandling);
-    reconciler.setKubernetesClient(client);
     operator.register(reconciler, o -> {
       o.settingNamespace(namespace);
       if (fieldManager != null) {