use pointer type for nodeAffinity (#1263)

* use pointer type for nodeAffinity

pkg/cluster/cluster.go

@@ -113,9 +113,9 @@ func New(cfg Config, kubeClient k8sutil.KubernetesClient, pgSpec acidv1.Postgres
 
 		return fmt.Sprintf("%s-%s", e.PodName, e.ResourceVersion), nil
 	})
-	password_encryption, ok := pgSpec.Spec.PostgresqlParam.Parameters["password_encryption"]
+	passwordEncryption, ok := pgSpec.Spec.PostgresqlParam.Parameters["password_encryption"]
 	if !ok {
-		password_encryption = "md5"
+		passwordEncryption = "md5"
 	}
 
 	cluster := &Cluster{
@@ -128,7 +128,7 @@ func New(cfg Config, kubeClient k8sutil.KubernetesClient, pgSpec acidv1.Postgres
 			Secrets:   make(map[types.UID]*v1.Secret),
 			Services:  make(map[PostgresRole]*v1.Service),
 			Endpoints: make(map[PostgresRole]*v1.Endpoints)},
-		userSyncStrategy: users.DefaultUserSyncStrategy{PasswordEncryption: password_encryption},
+		userSyncStrategy: users.DefaultUserSyncStrategy{PasswordEncryption: passwordEncryption},
 		deleteOptions:    metav1.DeleteOptions{PropagationPolicy: &deletePropagationPolicy},
 		podEventsQueue:   podEventsQueue,
 		KubeClient:       kubeClient,

pkg/cluster/connection_pooler.go

@@ -22,7 +22,7 @@ import (
 	"github.com/zalando/postgres-operator/pkg/util/k8sutil"
 )
 
-// K8S objects that are belong to connection pooler
+// ConnectionPoolerObjects K8s objects that are belong to connection pooler
 type ConnectionPoolerObjects struct {
 	Deployment  *appsv1.Deployment
 	Service     *v1.Service

pkg/cluster/k8sres.go

@@ -1223,7 +1223,7 @@ func (c *Cluster) generateStatefulSet(spec *acidv1.PostgresSpec) (*appsv1.Statef
 		effectiveRunAsUser,
 		effectiveRunAsGroup,
 		effectiveFSGroup,
-		nodeAffinity(c.OpConfig.NodeReadinessLabel, &spec.NodeAffinity),
+		nodeAffinity(c.OpConfig.NodeReadinessLabel, spec.NodeAffinity),
 		spec.SchedulerName,
 		int64(c.OpConfig.PodTerminateGracePeriod.Seconds()),
 		c.OpConfig.PodServiceAccountName,

pkg/cluster/k8sres_test.go

@@ -882,7 +882,7 @@ func TestNodeAffinity(t *testing.T) {
 			Volume: acidv1.Volume{
 				Size: "1G",
 			},
-			NodeAffinity: *nodeAffinity,
+			NodeAffinity: nodeAffinity,
 		}
 	}