fix: Make @ControllerConfiguration Inherited (#1347)

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/reconciler/ControllerConfiguration.java

@@ -1,6 +1,7 @@
 package io.javaoperatorsdk.operator.api.reconciler;
 
 import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
@@ -19,6 +20,7 @@
 import io.javaoperatorsdk.operator.processing.retry.GenericRetry;
 import io.javaoperatorsdk.operator.processing.retry.Retry;
 
+@Inherited
 @Retention(RetentionPolicy.RUNTIME)
 @Target({ElementType.TYPE})
 public @interface ControllerConfiguration {

operator-framework/src/test/java/io/javaoperatorsdk/operator/config/runtime/AnnotationControllerConfigurationTest.java

@@ -38,6 +38,7 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -176,6 +177,12 @@ void checkingRetryingGraduallyWorks() {
     assertEquals(CheckRetryingGraduallyConfiguration.MAX_INTERVAL, genericRetry.getMaxInterval());
   }
 
+  @Test
+  void controllerConfigurationOnSuperClassShouldWork() {
+    var config = new AnnotationControllerConfiguration<>(new ControllerConfigurationOnSuperClass());
+    assertNotNull(config.getName());
+  }
+
   @ControllerConfiguration(
       maxReconciliationInterval = @MaxReconciliationInterval(interval = 50,
           timeUnit = TimeUnit.SECONDS))
@@ -334,4 +341,16 @@ public UpdateControl<ConfigMap> reconcile(ConfigMap resource, Context<ConfigMap>
       return UpdateControl.noUpdate();
     }
   }
+
+  private static class ControllerConfigurationOnSuperClass extends BaseClass {
+  }
+
+  @ControllerConfiguration
+  private static class BaseClass implements Reconciler<ConfigMap> {
+
+    @Override
+    public UpdateControl<ConfigMap> reconcile(ConfigMap resource, Context<ConfigMap> context) {
+      return null;
+    }
+  }
 }