Prevent status updates from triggering reconcile loops (#385)

Signed-off-by: Matt Christiansen <matt@nikore.net>

Co-authored-by: anishakj <43978302+anishakj@users.noreply.github.com>

pkg/controller/zookeepercluster/zookeepercluster_controller.go

@@ -16,6 +16,7 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/operator-framework/operator-sdk/pkg/predicate"
 	"k8s.io/client-go/kubernetes/scheme"
 	"sigs.k8s.io/controller-runtime/pkg/client/fake"
 
@@ -71,31 +72,31 @@ func add(mgr manager.Manager, r reconcile.Reconciler) error {
 
 	// Watch for changes to primary resource ZookeeperCluster
 	err = c.Watch(&source.Kind{Type: &zookeeperv1beta1.ZookeeperCluster{}},
-		&handler.EnqueueRequestForObject{})
+		&handler.EnqueueRequestForObject{}, predicate.GenerationChangedPredicate{})
 	if err != nil {
 		return err
 	}
 	// Watch for changes to zookeeper stateful-set secondary resources
 	err = c.Watch(&source.Kind{Type: &appsv1.StatefulSet{}}, &handler.EnqueueRequestForOwner{
 		IsController: true,
 		OwnerType:    &zookeeperv1beta1.ZookeeperCluster{},
-	})
+	}, predicate.GenerationChangedPredicate{})
 	if err != nil {
 		return err
 	}
 	// Watch for changes to zookeeper service secondary resources
 	err = c.Watch(&source.Kind{Type: &corev1.Service{}}, &handler.EnqueueRequestForOwner{
 		IsController: true,
 		OwnerType:    &zookeeperv1beta1.ZookeeperCluster{},
-	})
+	}, predicate.GenerationChangedPredicate{})
 	if err != nil {
 		return err
 	}
 	// Watch for changes to zookeeper pod secondary resources
 	err = c.Watch(&source.Kind{Type: &corev1.Pod{}}, &handler.EnqueueRequestForOwner{
 		IsController: true,
 		OwnerType:    &zookeeperv1beta1.ZookeeperCluster{},
-	})
+	}, predicate.GenerationChangedPredicate{})
 	if err != nil {
 		return err
 	}