feat: Add tomcat operator sample (#659)

fixed informer bug and related IT as part of this commit

Co-authored-by: Chris Laprun <[email protected]>
Co-authored-by: Attila Mészáros <[email protected]>
Co-authored-by: Adam Sándor <[email protected]>

Author: 3 people

Diff for: operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/source/ControllerResourceEventSource.java

@@ -1,11 +1,11 @@
 package io.javaoperatorsdk.operator.processing.event.source;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import io.fabric8.kubernetes.api.model.HasMetadata;
 import io.fabric8.kubernetes.api.model.KubernetesResourceList;
 import io.fabric8.kubernetes.client.KubernetesClientException;
@@ -21,6 +21,9 @@
 import io.javaoperatorsdk.operator.processing.ResourceCache;
 import io.javaoperatorsdk.operator.processing.event.ResourceID;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import static io.javaoperatorsdk.operator.processing.KubernetesResourceUtils.getName;
 import static io.javaoperatorsdk.operator.processing.KubernetesResourceUtils.getUID;
 import static io.javaoperatorsdk.operator.processing.KubernetesResourceUtils.getVersion;
@@ -175,8 +178,6 @@ public Optional<T> getCustomResource(ResourceID resourceID) {
     }
   }
 
-
-
   /**
    * @return shared informers by namespace. If custom resource is not namespace scoped use
    *         CustomResourceEventSource.ANY_NAMESPACE_MAP_KEY

Diff for: operator-framework/src/test/java/io/javaoperatorsdk/operator/InformerEventSourceIT.java

@@ -40,7 +40,7 @@ public void testUsingInformerToWatchChangesOfConfigMap() {
     waitForCRStatusValue(INITIAL_STATUS_MESSAGE);
 
     configMap.getData().put(TARGET_CONFIG_MAP_KEY, UPDATE_STATUS_MESSAGE);
-    operator.replace(ConfigMap.class, configMap);
+    configMap = operator.replace(ConfigMap.class, configMap);
 
     waitForCRStatusValue(UPDATE_STATUS_MESSAGE);
   }