From a87bda54cad0d635dbec1883f24579aac11c364f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Sierant?= <lukasz.sierant@mongodb.com>
Date: Tue, 5 Mar 2024 13:30:19 +0100
Subject: [PATCH] Removed unused code (#1501)

---
 pkg/kube/client/client_test.go | 32 --------------
 pkg/kube/service/service.go    | 81 ----------------------------------
 2 files changed, 113 deletions(-)

diff --git a/pkg/kube/client/client_test.go b/pkg/kube/client/client_test.go
index 0a8b5c726..fcaeccd31 100644
--- a/pkg/kube/client/client_test.go
+++ b/pkg/kube/client/client_test.go
@@ -2,8 +2,6 @@ package client
 
 import (
 	"context"
-	"github.com/mongodb/mongodb-kubernetes-operator/pkg/kube/annotations"
-	"github.com/mongodb/mongodb-kubernetes-operator/pkg/kube/service"
 	"testing"
 
 	"k8s.io/apimachinery/pkg/types"
@@ -83,33 +81,3 @@ func TestDeleteConfigMap(t *testing.T) {
 	_, err = client.GetConfigMap(types.NamespacedName{Name: "config-map", Namespace: "default"})
 	assert.Equal(t, err, notFoundError())
 }
-
-// TestSetAnnotationsDoesNotChangeSuppliedObject verifies that the supplied object for annotations.SetAnnotations is not overridden due being a shallow copy.
-// the function lies here, otherwise it will lead to import cycles.
-func TestSetAnnotationsDoesNotChangeSuppliedObject(t *testing.T) {
-	c := NewClient(NewMockedClient())
-	backedService := service.Builder().
-		SetName("some-name").
-		SetNamespace("some-namespace").
-		SetAnnotations(map[string]string{"one": "annotation"}).
-		SetClusterIP("123").
-		Build()
-	err := service.CreateOrUpdateService(c, backedService)
-	assert.NoError(t, err)
-
-	serviceWithoutAnnotation := service.Builder().
-		SetName("some-name").
-		SetNamespace("some-namespace").
-		Build()
-
-	// make sure this method only changes the annotations locally and in kube
-	err = annotations.SetAnnotations(&serviceWithoutAnnotation, map[string]string{"new": "something"}, c)
-	assert.NoError(t, err)
-	assert.Len(t, serviceWithoutAnnotation.Annotations, 2)
-	assert.Equal(t, "", serviceWithoutAnnotation.Spec.ClusterIP)
-
-	err = c.Get(context.TODO(), types.NamespacedName{Name: serviceWithoutAnnotation.GetName(), Namespace: serviceWithoutAnnotation.GetNamespace()}, &serviceWithoutAnnotation)
-	assert.NoError(t, err)
-	assert.Len(t, serviceWithoutAnnotation.Annotations, 2)
-	assert.Equal(t, "123", serviceWithoutAnnotation.Spec.ClusterIP)
-}
diff --git a/pkg/kube/service/service.go b/pkg/kube/service/service.go
index 887a65d92..a2792065e 100644
--- a/pkg/kube/service/service.go
+++ b/pkg/kube/service/service.go
@@ -1,11 +1,7 @@
 package service
 
 import (
-	"fmt"
-
 	corev1 "k8s.io/api/core/v1"
-	apiErrors "k8s.io/apimachinery/pkg/api/errors"
-	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
@@ -47,80 +43,3 @@ type GetUpdateCreateDeleter interface {
 	Creator
 	Deleter
 }
-
-func DeleteServiceIfItExists(getterDeleter GetDeleter, serviceName types.NamespacedName) error {
-	_, err := getterDeleter.GetService(serviceName)
-	if err != nil {
-		// If it is not found return
-		if apiErrors.IsNotFound(err) {
-			return nil
-		}
-		// Otherwise we got an error when trying to get it
-		return fmt.Errorf("can't get service %s: %s", serviceName, err)
-	}
-	return getterDeleter.DeleteService(serviceName)
-}
-
-// Merge merges `source` into `dest`. Both arguments will remain unchanged
-// a new service will be created and returned.
-// The "merging" process is arbitrary and it only handle specific attributes
-func Merge(dest corev1.Service, source corev1.Service) corev1.Service {
-	for k, v := range source.ObjectMeta.Annotations {
-		dest.ObjectMeta.Annotations[k] = v
-	}
-
-	for k, v := range source.ObjectMeta.Labels {
-		dest.ObjectMeta.Labels[k] = v
-	}
-
-	for k, v := range source.Spec.Selector {
-		dest.Spec.Selector[k] = v
-	}
-
-	cachedNodePorts := map[int32]int32{}
-	for _, port := range dest.Spec.Ports {
-		cachedNodePorts[port.Port] = port.NodePort
-	}
-
-	if len(source.Spec.Ports) > 0 {
-		portCopy := make([]corev1.ServicePort, len(source.Spec.Ports))
-		copy(portCopy, source.Spec.Ports)
-		dest.Spec.Ports = portCopy
-
-		for i := range dest.Spec.Ports {
-			// Source might not specify NodePort and we shouldn't override existing NodePort value
-			if dest.Spec.Ports[i].NodePort == 0 {
-				dest.Spec.Ports[i].NodePort = cachedNodePorts[dest.Spec.Ports[i].Port]
-			}
-		}
-	}
-
-	dest.Spec.Type = source.Spec.Type
-	dest.Spec.LoadBalancerIP = source.Spec.LoadBalancerIP
-	dest.Spec.ExternalTrafficPolicy = source.Spec.ExternalTrafficPolicy
-	return dest
-}
-
-// CreateOrUpdateService will create or update a service in Kubernetes.
-func CreateOrUpdateService(getUpdateCreator GetUpdateCreator, desiredService corev1.Service) error {
-	namespacedName := types.NamespacedName{Namespace: desiredService.ObjectMeta.Namespace, Name: desiredService.ObjectMeta.Name}
-	existingService, err := getUpdateCreator.GetService(namespacedName)
-
-	if err != nil {
-		if apiErrors.IsNotFound(err) {
-			err = getUpdateCreator.CreateService(desiredService)
-			if err != nil {
-				return err
-			}
-		} else {
-			return err
-		}
-	} else {
-		mergedService := Merge(existingService, desiredService)
-		err = getUpdateCreator.UpdateService(mergedService)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}