/
managed_service_account_addon.go
274 lines (243 loc) · 7.1 KB
/
managed_service_account_addon.go
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package utils
import (
"context"
"fmt"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
addonv1alpha1 "open-cluster-management.io/api/addon/v1alpha1"
clusterv1 "open-cluster-management.io/api/cluster/v1"
)
var gvrMCH = schema.GroupVersionResource{
Group: "operator.open-cluster-management.io",
Version: "v1",
Resource: "multiclusterhubs",
}
var gvrMCE = schema.GroupVersionResource{
Group: "multicluster.openshift.io",
Version: "v1",
Resource: "multiclusterengines",
}
func unstructuredToManagedClusterAddon(
u *unstructured.Unstructured,
) (*addonv1alpha1.ManagedClusterAddOn, error) {
mca := &addonv1alpha1.ManagedClusterAddOn{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(
u.UnstructuredContent(),
mca,
)
if err != nil {
return nil, err
}
return mca, nil
}
func DoesManagedServiceAccountAddonExist(
hubClient dynamic.Interface,
managedCluster *clusterv1.ManagedCluster,
) bool {
_, err := GetManagedServiceAccountAddon(hubClient, managedCluster)
if errors.IsNotFound(err) {
return false
}
// NOTE: only false is trustworthy true is not
return true
}
func IsManagedServiceAccountAddonAvailable(
hubClient dynamic.Interface,
managedCluster *clusterv1.ManagedCluster,
) bool {
managedServiceAccountAddon, err := GetManagedServiceAccountAddon(hubClient, managedCluster)
if err != nil {
return false
}
for _, condition := range managedServiceAccountAddon.Status.Conditions {
if condition.Type == addonv1alpha1.ManagedClusterAddOnConditionAvailable {
if condition.Status == "True" {
return true
}
}
}
return false
}
// list globally and get first mch, will return no error and no obj if not found
func GetMultiClusterHub(
hubClient dynamic.Interface,
) (*unstructured.Unstructured, error) {
uMCHList, err := hubClient.Resource(gvrMCH).List(context.TODO(), metav1.ListOptions{})
if err != nil && !errors.IsNotFound(err) {
return nil, err
}
if errors.IsNotFound(err) || len(uMCHList.Items) < 1 {
// ignore not found errors
return nil, nil
}
return &uMCHList.Items[0], nil
}
// GetMultiClusterEngine find first MCE in the cluster, will return error if no MCE can be found
func GetMultiClusterEngine(
hubClient dynamic.Interface,
) (*unstructured.Unstructured, error) {
uMCEList, err := hubClient.Resource(gvrMCE).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return nil, err
}
if len(uMCEList.Items) < 1 {
// not found will return error
return nil, fmt.Errorf("MulticlusterEngine CR not found.")
}
return &uMCEList.Items[0], nil
}
func EnableManagedServiceAccountFeature(hubClient dynamic.Interface) error {
// modify mce first, and then modify mch
// this way even if mce change is rejected by mch-operator, we will still modify mch to make sure it works
mce, err := GetMultiClusterEngine(hubClient)
if err != nil {
return err
}
err = SetManagedServiceAcccount(mce, true)
if err != nil {
return err
}
_, err = hubClient.Resource(gvrMCE).Namespace("").Update(context.TODO(), mce, metav1.UpdateOptions{})
if err != nil {
return err
}
// modify mch if found
mch, err := GetMultiClusterHub(hubClient)
if mch == nil || (err != nil && errors.IsNotFound(err)) {
return nil
} else if err != nil {
return err
}
err = SetManagedServiceAcccount(mch, true)
if err != nil {
return err
}
_, err = hubClient.Resource(gvrMCH).Namespace(mch.GetNamespace()).Update(context.TODO(), mch, metav1.UpdateOptions{})
if err != nil {
return err
}
return nil
}
func SetManagedServiceAcccount(m *unstructured.Unstructured, state bool) error {
components, ok, err := unstructured.NestedSlice(m.Object, "spec", "overrides", "components")
if !ok {
return fmt.Errorf("failed to get spec.components in %v", m)
}
if err != nil {
return err
}
idx := -1
elem := map[string]interface{}{
"enabled": state,
"name": "managedserviceaccount-preview",
}
for i, c := range components {
component, ok := c.(map[string]interface{})
if !ok {
return fmt.Errorf("unexpected format for component %v expecting it to be a map[string]interface{}", component)
}
if name, ok := component["name"]; ok && name == elem["name"] {
idx = i
}
}
// modify components
if idx < 0 {
// append
components = append(components, elem)
} else {
// update
components[idx] = elem
}
err = unstructured.SetNestedSlice(m.Object, components, "spec", "overrides", "components")
if err != nil {
return err
}
return nil
}
func GetManagedServiceAccountAddon(
hubClient dynamic.Interface,
managedCluster *clusterv1.ManagedCluster,
) (*addonv1alpha1.ManagedClusterAddOn, error) {
gvr := schema.GroupVersionResource{
Group: "addon.open-cluster-management.io",
Version: "v1alpha1",
Resource: "managedclusteraddons",
}
uManagedServiceAccountAddon, err := hubClient.Resource(gvr).Namespace(managedCluster.Name).
Get(context.TODO(), "managed-serviceaccount", metav1.GetOptions{})
if err != nil {
return nil, err
}
managedServiceAccountAddon, err := unstructuredToManagedClusterAddon(uManagedServiceAccountAddon)
if err != nil {
return nil, err
}
return managedServiceAccountAddon, nil
}
func CreateManagedServiceAccountAddon(
hubClient dynamic.Interface,
managedCluster *clusterv1.ManagedCluster,
) (*addonv1alpha1.ManagedClusterAddOn, error) {
gvr := schema.GroupVersionResource{
Group: "addon.open-cluster-management.io",
Version: "v1alpha1",
Resource: "managedclusteraddons",
}
managedServiceAccountAddon, err := GetManagedServiceAccountAddon(hubClient, managedCluster)
if errors.IsNotFound(err) {
newManagedServiceAccountAddon := &addonv1alpha1.ManagedClusterAddOn{
TypeMeta: metav1.TypeMeta{
Kind: "ManagedClusterAddOn",
APIVersion: "addon.open-cluster-management.io/v1alpha1",
},
ObjectMeta: metav1.ObjectMeta{
Name: "managed-serviceaccount",
Namespace: managedCluster.Name,
},
Spec: addonv1alpha1.ManagedClusterAddOnSpec{
InstallNamespace: "open-cluster-management-managed-serviceaccount",
},
}
uNewManagedServiceAccountAddon, err := toUnstructured(newManagedServiceAccountAddon)
if err != nil {
return nil, err
}
uManagedServiceAccountAddon, err := hubClient.
Resource(gvr).
Namespace(managedCluster.Name).
Create(
context.TODO(),
uNewManagedServiceAccountAddon,
metav1.CreateOptions{},
)
if err != nil {
return nil, err
}
managedServiceAccountAddon, err := unstructuredToManagedClusterAddon(uManagedServiceAccountAddon)
if err != nil {
return nil, err
}
return managedServiceAccountAddon, nil
}
return managedServiceAccountAddon, nil
}
func DeleteManagedServiceAccountAddon(
hubClient dynamic.Interface,
managedCluster *clusterv1.ManagedCluster,
) error {
gvr := schema.GroupVersionResource{
Group: "addon.open-cluster-management.io",
Version: "v1alpha1",
Resource: "managedclusteraddons",
}
err := hubClient.Resource(gvr).Namespace(managedCluster.Name).Delete(
context.TODO(),
"managed-serviceaccount",
metav1.DeleteOptions{},
)
return err
}