Remove deadcode

Remove functions and variables that are reported by `deadcode`.

pkg/havener/common.go

@@ -74,15 +74,6 @@ func outOfClusterAuthentication(kubeConfig string) (*kubernetes.Clientset, *rest
 	return clientset, config, err
 }
 
-func isSystemNamespace(namespace string) bool {
-	switch namespace {
-	case "default", "kube-system", "ibm-system":
-		return true
-	}
-
-	return false
-}
-
 func clusterName(kubeConfig string) (string, error) {
 	data, err := os.ReadFile(kubeConfig)
 	if err != nil {

pkg/havener/havener.go

@@ -116,15 +116,6 @@ type Havener interface {
 // Option provides a way to set specific settings for creating the Havener setup
 type Option func(*Hvnr)
 
-// KubeConfig is an option to set a specific Kubernetes configuration path
-//
-// Deprecated: Use WithKubeConfigPath instead
-func KubeConfig(kubeConfig string) Option {
-	return func(h *Hvnr) {
-		h.kubeConfigPath = kubeConfig
-	}
-}
-
 func WithKubeConfigPath(kubeConfig string) Option {
 	return func(h *Hvnr) { h.kubeConfigPath = kubeConfig }
 }
@@ -134,17 +125,6 @@ func WithContext(ctx context.Context) Option {
 	return func(h *Hvnr) { h.ctx = ctx }
 }
 
-// NewHavenerFromFields returns a new Havener handle using the provided
-// input arguments (use for unit testing only)
-func NewHavenerFromFields(client kubernetes.Interface, restconfig *rest.Config, clusterName string, kubeConfigPath string) *Hvnr {
-	return &Hvnr{
-		client:         client,
-		restconfig:     restconfig,
-		clusterName:    clusterName,
-		kubeConfigPath: kubeConfigPath,
-	}
-}
-
 // NewHavener returns a new Havener handle to perform cluster actions
 func NewHavener(opts ...Option) (hvnr *Hvnr, err error) {
 	hvnr = &Hvnr{}

pkg/havener/list.go

@@ -37,36 +37,6 @@ import (
 	"github.com/gonvenience/text"
 )
 
-// ListStatefulSetsInNamespace returns all names of stateful sets in the given namespace
-func ListStatefulSetsInNamespace(client kubernetes.Interface, namespace string) ([]string, error) {
-	list, err := client.AppsV1beta1().StatefulSets(namespace).List(context.TODO(), metav1.ListOptions{})
-	if err != nil {
-		return nil, err
-	}
-
-	result := make([]string, len(list.Items))
-	for idx, item := range list.Items {
-		result[idx] = item.Name
-	}
-
-	return result, nil
-}
-
-// ListDeploymentsInNamespace returns all names of deployments in the given namespace
-func ListDeploymentsInNamespace(client kubernetes.Interface, namespace string) ([]string, error) {
-	list, err := client.AppsV1beta1().Deployments(namespace).List(context.TODO(), metav1.ListOptions{})
-	if err != nil {
-		return nil, err
-	}
-
-	result := make([]string, len(list.Items))
-	for idx, item := range list.Items {
-		result[idx] = item.Name
-	}
-
-	return result, nil
-}
-
 // ListNamespaces lists all namespaces
 func (h *Hvnr) ListNamespaces() ([]string, error) {
 	logf(Verbose, "Listing all namespaces")
@@ -85,31 +55,6 @@ func (h *Hvnr) ListNamespaces() ([]string, error) {
 	return result, nil
 }
 
-// ListSecretsInNamespace lists all secrets in a given namespace
-func ListSecretsInNamespace(client kubernetes.Interface, namespace string) ([]string, error) {
-	secretList, err := client.CoreV1().Secrets(namespace).List(context.TODO(), metav1.ListOptions{})
-	if err != nil {
-		return nil, err
-	}
-
-	result := make([]string, len(secretList.Items))
-	for i, secret := range secretList.Items {
-		result[i] = secret.Name
-	}
-
-	return result, nil
-}
-
-// SecretsInNamespace lists all secrets in a given namespace
-func SecretsInNamespace(client kubernetes.Interface, namespace string) ([]corev1.Secret, error) {
-	secretList, err := client.CoreV1().Secrets(namespace).List(context.TODO(), metav1.ListOptions{})
-	if err != nil {
-		return nil, err
-	}
-
-	return secretList.Items, nil
-}
-
 // ListPods lists all pods in the given namespaces, if no namespace is given,
 // then all namespaces currently available in the cluster will be used
 func (h *Hvnr) ListPods(namespaces ...string) ([]*corev1.Pod, error) {

pkg/havener/purge.go

@@ -22,110 +22,12 @@ package havener
 
 import (
 	"context"
-	"fmt"
 
-	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	"k8s.io/apimachinery/pkg/api/errors"
-	"k8s.io/apimachinery/pkg/watch"
 	"k8s.io/client-go/kubernetes"
 )
 
-var defaultPropagationPolicy = metav1.DeletePropagationForeground
-
-// PurgeDeploymentsInNamespace removes all deployments in the given namespace.
-func PurgeDeploymentsInNamespace(kubeClient kubernetes.Interface, namespace string) error {
-	// Skip known system namespaces
-	if isSystemNamespace(namespace) {
-		return nil
-	}
-
-	if deployments, err := ListDeploymentsInNamespace(kubeClient, namespace); err == nil {
-		for _, name := range deployments {
-			err := kubeClient.AppsV1beta1().Deployments(namespace).Delete(context.TODO(), name, metav1.DeleteOptions{
-				PropagationPolicy: &defaultPropagationPolicy,
-			})
-
-			if err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-// PurgeStatefulSetsInNamespace removes all stateful sets in the given namespace.
-func PurgeStatefulSetsInNamespace(kubeClient kubernetes.Interface, namespace string) error {
-	// Skip known system namespaces
-	if isSystemNamespace(namespace) {
-		return nil
-	}
-
-	if statefulsets, err := ListStatefulSetsInNamespace(kubeClient, namespace); err == nil {
-		for _, name := range statefulsets {
-			err := kubeClient.AppsV1beta1().StatefulSets(namespace).Delete(context.TODO(), name, metav1.DeleteOptions{
-				PropagationPolicy: &defaultPropagationPolicy,
-			})
-
-			if err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-// PurgeNamespace removes the namespace from the cluster.
-func PurgeNamespace(kubeClient kubernetes.Interface, namespace string) error {
-	// Skip known system namespaces
-	if isSystemNamespace(namespace) {
-		return nil
-	}
-
-	ns, err := kubeClient.CoreV1().Namespaces().Get(context.TODO(), namespace, metav1.GetOptions{})
-	if err != nil {
-		// Bail out if namespace is already deleted
-		switch err.(type) {
-		case *errors.StatusError:
-			if err.Error() == fmt.Sprintf(`namespaces "%s" not found`, namespace) {
-				return nil
-			}
-		}
-
-		return err
-	}
-
-	// Bail out if namespace is already in Phase Terminating
-	switch ns.Status.Phase {
-	case corev1.NamespaceTerminating:
-		return nil
-	}
-
-	watcher, err := kubeClient.CoreV1().Namespaces().Watch(context.TODO(), metav1.SingleObject(ns.ObjectMeta))
-	if err != nil {
-		return err
-	}
-
-	if err := kubeClient.CoreV1().Namespaces().Delete(context.TODO(), namespace, metav1.DeleteOptions{PropagationPolicy: &defaultPropagationPolicy}); err != nil {
-		return err
-	}
-
-	for event := range watcher.ResultChan() {
-		switch event.Type {
-		case watch.Deleted:
-			watcher.Stop()
-
-		case watch.Error:
-			return fmt.Errorf("failed to watch namespace %s during deletion: %w", namespace, err)
-		}
-	}
-
-	return nil
-}
-
 // PurgePod removes the pod in the given namespace.
 func PurgePod(kubeClient kubernetes.Interface, namespace string, podName string, gracePeriodSeconds int64, propagationPolicy metav1.DeletionPropagation) error {
 	logf(Verbose, "Deleting pod %s in namespace %s", podName, namespace)