improve: logging for informer health check (#1737)

Author: csviri

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/health/InformerHealthIndicator.java

@@ -9,9 +9,7 @@ public interface InformerHealthIndicator extends EventSourceHealthIndicator {
   boolean isRunning();
 
   @Override
-  default Status getStatus() {
-    return isRunning() && hasSynced() && isWatching() ? Status.HEALTHY : Status.UNHEALTHY;
-  }
+  Status getStatus();
 
   String getTargetNamespace();
 }

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

@@ -22,6 +22,7 @@
 import io.javaoperatorsdk.operator.ReconcilerUtils;
 import io.javaoperatorsdk.operator.api.config.ConfigurationServiceProvider;
 import io.javaoperatorsdk.operator.health.InformerHealthIndicator;
+import io.javaoperatorsdk.operator.health.Status;
 import io.javaoperatorsdk.operator.processing.LifecycleAware;
 import io.javaoperatorsdk.operator.processing.event.ResourceID;
 import io.javaoperatorsdk.operator.processing.event.source.IndexerResourceCache;
@@ -175,6 +176,16 @@ public boolean isRunning() {
     return informer.isRunning();
   }
 
+  @Override
+  public Status getStatus() {
+    var status = isRunning() && hasSynced() && isWatching() ? Status.HEALTHY : Status.UNHEALTHY;
+    log.debug(
+        "Informer status: {} for for type: {}, namespace: {}, details[ is running: {}, has synced: {}, is watching: {} ]",
+        status, informer.getApiTypeClass().getSimpleName(), namespaceIdentifier, isRunning(),
+        hasSynced(), isWatching());
+    return status;
+  }
+
   @Override
   public String getTargetNamespace() {
     return namespaceIdentifier;