fix: naming and minor structural improvements

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/config/informer/InformerConfiguration.java

@@ -20,36 +20,36 @@ public interface InformerConfiguration<R extends HasMetadata, P extends HasMetad
   class DefaultInformerConfiguration<R extends HasMetadata, P extends HasMetadata> extends
       DefaultResourceConfiguration<R> implements InformerConfiguration<R, P> {
 
-    private final SecondaryToPrimaryMapper<R> secondaryToPrimaryResourcesIdSet;
-    private final PrimaryToSecondaryMapper<P> associatedWith;
+    private final SecondaryToPrimaryMapper<R> secondaryToPrimaryMapper;
+    private final PrimaryToSecondaryMapper<P> primaryToSecondaryMapper;
 
     protected DefaultInformerConfiguration(String labelSelector,
         Class<R> resourceClass,
-        SecondaryToPrimaryMapper<R> secondaryToPrimaryResourcesIdSet,
-        PrimaryToSecondaryMapper<P> associatedWith,
+        SecondaryToPrimaryMapper<R> secondaryToPrimaryMapper,
+        PrimaryToSecondaryMapper<P> primaryToSecondaryMapper,
         Set<String> namespaces) {
       super(labelSelector, resourceClass, namespaces);
-      this.secondaryToPrimaryResourcesIdSet =
-          Objects.requireNonNullElse(secondaryToPrimaryResourcesIdSet,
+      this.secondaryToPrimaryMapper =
+          Objects.requireNonNullElse(secondaryToPrimaryMapper,
               Mappers.fromOwnerReference());
-      this.associatedWith =
-          Objects.requireNonNullElseGet(associatedWith, () -> ResourceID::fromResource);
+      this.primaryToSecondaryMapper =
+          Objects.requireNonNullElseGet(primaryToSecondaryMapper, () -> ResourceID::fromResource);
     }
 
 
-    public SecondaryToPrimaryMapper<R> getPrimaryResourcesRetriever() {
-      return secondaryToPrimaryResourcesIdSet;
+    public SecondaryToPrimaryMapper<R> getSecondaryToPrimaryMapper() {
+      return secondaryToPrimaryMapper;
     }
 
-    public PrimaryToSecondaryMapper<P> getAssociatedResourceIdentifier() {
-      return associatedWith;
+    public PrimaryToSecondaryMapper<P> getPrimaryToSecondaryMapper() {
+      return primaryToSecondaryMapper;
     }
 
   }
 
-  SecondaryToPrimaryMapper<R> getPrimaryResourcesRetriever();
+  SecondaryToPrimaryMapper<R> getSecondaryToPrimaryMapper();
 
-  PrimaryToSecondaryMapper<P> getAssociatedResourceIdentifier();
+  PrimaryToSecondaryMapper<P> getPrimaryToSecondaryMapper();
 
   @SuppressWarnings("unused")
   class InformerConfigurationBuilder<R extends HasMetadata, P extends HasMetadata> {
@@ -116,7 +116,7 @@ static <R extends HasMetadata, P extends HasMetadata> InformerConfigurationBuild
         .withNamespaces(configuration.getNamespaces())
         .withLabelSelector(configuration.getLabelSelector())
         .withAssociatedSecondaryResourceIdentifier(
-            configuration.getAssociatedResourceIdentifier())
-        .withPrimaryResourcesRetriever(configuration.getPrimaryResourcesRetriever());
+            configuration.getPrimaryToSecondaryMapper())
+        .withPrimaryResourcesRetriever(configuration.getSecondaryToPrimaryMapper());
   }
 }

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

@@ -43,8 +43,6 @@ public Stream<R> list(Predicate<R> predicate) {
     return cache.list(predicate);
   }
 
-
-
   protected UpdatableCache<R> initCache() {
     return new ConcurrentHashMapCache<>();
   }

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

@@ -5,5 +5,5 @@
 
 @FunctionalInterface
 public interface PrimaryToSecondaryMapper<P extends HasMetadata> {
-  ResourceID associatedSecondaryID(P primary);
+  ResourceID toSecondaryResourceID(P primary);
 }

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

@@ -6,5 +6,5 @@
 
 @FunctionalInterface
 public interface SecondaryToPrimaryMapper<T> {
-  Set<ResourceID> associatedPrimaryResources(T dependentResource);
+  Set<ResourceID> toPrimaryResourceIDs(T dependentResource);
 }

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/source/controller/ControllerResourceEventSource.java

@@ -103,6 +103,6 @@ private void handleKubernetesClientException(Exception e) {
 
   @Override
   public Optional<T> getSecondaryResource(T primary) {
-    return get(ResourceID.fromResource(primary));
+    throw new IllegalStateException("This method should not be called here. Primary: " + primary);
   }
 }

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

@@ -85,11 +85,17 @@ public InformerEventSource(InformerConfiguration<R, P> configuration, Kubernetes
 
   @Override
   public void onAdd(R resource) {
+    if (log.isDebugEnabled()) {
+      log.debug("On add event received for resource id: {}", ResourceID.fromResource(resource));
+    }
     onAddOrUpdate("add", resource, () -> InformerEventSource.super.onAdd(resource));
   }
 
   @Override
   public void onUpdate(R oldObject, R newObject) {
+    if (log.isDebugEnabled()) {
+      log.debug("On update event received for resource id: {}", ResourceID.fromResource(newObject));
+    }
     onAddOrUpdate("update", newObject,
         () -> InformerEventSource.super.onUpdate(oldObject, newObject));
   }
@@ -118,14 +124,17 @@ private synchronized void onAddOrUpdate(String operation, R newObject, Runnable
   }
 
   @Override
-  public void onDelete(R r, boolean b) {
-    super.onDelete(r, b);
-    propagateEvent(r);
+  public void onDelete(R resource, boolean b) {
+    if (log.isDebugEnabled()) {
+      log.debug("On delete event received for resource id: {}", ResourceID.fromResource(resource));
+    }
+    super.onDelete(resource, b);
+    propagateEvent(resource);
   }
 
   private void propagateEvent(R object) {
     var primaryResourceIdSet =
-        configuration.getPrimaryResourcesRetriever().associatedPrimaryResources(object);
+        configuration.getSecondaryToPrimaryMapper().toPrimaryResourceIDs(object);
     if (primaryResourceIdSet.isEmpty()) {
       return;
     }
@@ -153,7 +162,7 @@ private void propagateEvent(R object) {
    */
   @Override
   public Optional<R> getSecondaryResource(P resource) {
-    final var id = configuration.getAssociatedResourceIdentifier().associatedSecondaryID(resource);
+    final var id = configuration.getPrimaryToSecondaryMapper().toSecondaryResourceID(resource);
     return get(id);
   }
 

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

@@ -95,9 +95,7 @@ public Optional<R> get(ResourceID resourceID) {
   }
 
   @Override
-  public Optional<R> getSecondaryResource(P primary) {
-    return get(ResourceID.fromResource(primary));
-  }
+  public abstract Optional<R> getSecondaryResource(P primary);
 
   @Override
   public Optional<R> getCachedValue(ResourceID resourceID) {

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

@@ -53,7 +53,7 @@ public synchronized void putAddedResource(T newResource) {
     ResourceID resourceID = ResourceID.fromResource(newResource);
     if (managedInformerEventSource.get(resourceID).isEmpty()) {
       log.debug("Putting resource to cache with ID: {}", resourceID);
-      cache.put(ResourceID.fromResource(newResource), newResource);
+      cache.put(resourceID, newResource);
     } else {
       log.debug("Won't put resource into cache found already informer cache: {}", resourceID);
     }

operator-framework-core/src/test/java/io/javaoperatorsdk/operator/processing/event/source/informer/InformerEventSourceTest.java

@@ -49,17 +49,17 @@ void setup() {
         .thenReturn(labeledResourceClientMock);
     when(labeledResourceClientMock.runnableInformer(0)).thenReturn(informer);
 
-    when(informerConfiguration.getPrimaryResourcesRetriever())
+    when(informerConfiguration.getSecondaryToPrimaryMapper())
         .thenReturn(mock(SecondaryToPrimaryMapper.class));
 
     informerEventSource = new InformerEventSource<>(informerConfiguration, clientMock);
     informerEventSource.setTemporalResourceCache(temporaryResourceCacheMock);
     informerEventSource.setEventHandler(eventHandlerMock);
 
     SecondaryToPrimaryMapper secondaryToPrimaryMapper = mock(SecondaryToPrimaryMapper.class);
-    when(informerConfiguration.getPrimaryResourcesRetriever())
+    when(informerConfiguration.getSecondaryToPrimaryMapper())
         .thenReturn(secondaryToPrimaryMapper);
-    when(secondaryToPrimaryMapper.associatedPrimaryResources(any()))
+    when(secondaryToPrimaryMapper.toPrimaryResourceIDs(any()))
         .thenReturn(Set.of(ResourceID.fromResource(testDeployment())));
   }
 

operator-framework/src/test/java/io/javaoperatorsdk/operator/sample/orderedmanageddependent/ConfigMapDependentResource1.java

@@ -46,7 +46,7 @@ protected ConfigMap desired(OrderedManagedDependentCustomResource primary,
   }
 
   @Override
-  public ResourceID associatedSecondaryID(OrderedManagedDependentCustomResource primary) {
+  public ResourceID toSecondaryResourceID(OrderedManagedDependentCustomResource primary) {
     return new ResourceID(primary.getMetadata().getName() + "1",
         primary.getMetadata().getNamespace());
   }

operator-framework/src/test/java/io/javaoperatorsdk/operator/sample/orderedmanageddependent/ConfigMapDependentResource2.java

@@ -46,7 +46,7 @@ protected ConfigMap desired(OrderedManagedDependentCustomResource primary,
   }
 
   @Override
-  public ResourceID associatedSecondaryID(OrderedManagedDependentCustomResource primary) {
+  public ResourceID toSecondaryResourceID(OrderedManagedDependentCustomResource primary) {
     return new ResourceID(primary.getMetadata().getName() + "2",
         primary.getMetadata().getNamespace());
   }

sample-operators/mysql-schema/src/main/java/io/javaoperatorsdk/operator/sample/dependent/SecretDependentResource.java

@@ -59,7 +59,7 @@ public Result<Secret> match(Secret actual, MySQLSchema primary, Context<MySQLSch
   }
 
   @Override
-  public ResourceID associatedSecondaryID(MySQLSchema primary) {
+  public ResourceID toSecondaryResourceID(MySQLSchema primary) {
     return new ResourceID(
         getSecretName(primary.getMetadata().getName()), primary.getMetadata().getNamespace());
   }

sample-operators/webpage/src/main/java/io/javaoperatorsdk/operator/sample/ConfigMapDependentResource.java

@@ -59,7 +59,7 @@ public ConfigMap update(ConfigMap actual, ConfigMap target, WebPage primary,
   }
 
   @Override
-  public ResourceID associatedSecondaryID(WebPage primary) {
+  public ResourceID toSecondaryResourceID(WebPage primary) {
     return new ResourceID(configMapName(primary), primary.getMetadata().getNamespace());
   }
 }