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watch application-manager SA secrets in the customized app addon NS #397

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May 10, 2024
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2 changes: 1 addition & 1 deletion pkg/controller/mcmhub/gitrepo_sync_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,7 @@ func TestGetGitResources(t *testing.T) {
err = c.Create(context.TODO(), githubchn)
g.Expect(err).NotTo(gomega.HaveOccurred())

time.Sleep(2 * time.Second)
time.Sleep(5 * time.Second)

resources, err := rec.GetGitResources(githubsub, false)
g.Expect(err).NotTo(gomega.HaveOccurred())
Expand Down
2 changes: 1 addition & 1 deletion pkg/controller/spoketoken/spoke_toke_controller_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -163,7 +163,7 @@ func TestReconcile(t *testing.T) {
g.Expect(c.Create(context.TODO(), secret1)).NotTo(gomega.HaveOccurred())
defer c.Delete(context.TODO(), secret1)

time.Sleep(time.Second * 2)
time.Sleep(time.Second * 5)

g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))

Expand Down
27 changes: 19 additions & 8 deletions pkg/controller/spoketoken/spoke_token_controller.go
Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ import (
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/rest"
"k8s.io/klog/v2"
"open-cluster-management.io/multicloud-operators-subscription/pkg/utils"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
Expand All @@ -40,18 +41,19 @@ import (
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"

"open-cluster-management.io/multicloud-operators-subscription/pkg/utils"
)

const (
secretSuffix = "-cluster-secret"
requeuAfter = 5
infrastructureConfigName = "cluster"
appAddonNS = "open-cluster-management-agent-addon"
appAddonName = "application-manager"
)

var (
appAddonNS = utils.GetComponentNamespace()
)

// Add creates a new agent token controller and adds it to the Manager if standalone is false.
func Add(mgr manager.Manager, hubconfig *rest.Config, syncid *types.NamespacedName, standalone bool) error {
if !standalone {
Expand Down Expand Up @@ -88,15 +90,15 @@ type applicationManagerSecretMapper struct {
func (mapper *applicationManagerSecretMapper) Map(ctx context.Context, obj client.Object) []reconcile.Request {
var requests []reconcile.Request

// reconcile open-cluster-management-agent-addon/application-manager SA if its associated secret changes
// reconcile App addon application-manager SA if its associated secret changes
requests = append(requests, reconcile.Request{
NamespacedName: types.NamespacedName{
Namespace: appAddonNS,
Name: appAddonName,
},
})

klog.Infof("app addon SA secret changed")
klog.Infof("app addon SA secret changed: %v/%v", appAddonNS, appAddonName)

return requests
}
Expand All @@ -110,13 +112,13 @@ func add(mgr manager.Manager, r reconcile.Reconciler) error {
return err
}

// Watch for changes to open-cluster-management-agent-addon/application-manager service account.
// Watch for changes to App Addon application-manager service account.
err = c.Watch(source.Kind(mgr.GetCache(), &corev1.ServiceAccount{}), &handler.EnqueueRequestForObject{}, utils.ServiceAccountPredicateFunctions)
if err != nil {
return err
}

// watch for changes to the secrets associated to the open-cluster-management-agent-addon/application-manager SA
// watch for changes to the secrets associated to the App Addon application-manager SA
saSecretMapper := &applicationManagerSecretMapper{mgr.GetClient()}
err = c.Watch(
source.Kind(mgr.GetCache(), &corev1.Secret{}),
Expand Down Expand Up @@ -416,7 +418,7 @@ func (r *ReconcileAgentToken) getKubeAPIServerAddress() (string, error) {
return infraConfig.Status.APIServerURL, nil
}

// detect if there is any change to the secret associated to the open-cluster-management-agent-addon/application-manager SA.
// detect if there is any change to the secret associated to the App Addon application-manager SA.
var applicationManagerSecretPredicateFunctions = predicate.Funcs{
UpdateFunc: func(e event.UpdateEvent) bool {
newSecret, ok := e.ObjectNew.(*corev1.Secret)
Expand All @@ -425,11 +427,14 @@ var applicationManagerSecretPredicateFunctions = predicate.Funcs{
}

if newSecret.Namespace != appAddonNS {
klog.Infof("secret namespace not matched, appAddonNS= %v", appAddonNS)
return false
}

if newSecret.Type == "kubernetes.io/service-account-token" &&
newSecret.GetAnnotations()["kubernetes.io/service-account.name"] == appAddonName {
klog.Infof("secret updated: %v/%v", appAddonNS, appAddonName)

return true
}

Expand All @@ -442,11 +447,14 @@ var applicationManagerSecretPredicateFunctions = predicate.Funcs{
}

if newSecret.Namespace != appAddonNS {
klog.Infof("secret namespace not matched, appAddonNS= %v", appAddonNS)
return false
}

if newSecret.Type == "kubernetes.io/service-account-token" &&
newSecret.GetAnnotations()["kubernetes.io/service-account.name"] == appAddonName {
klog.Infof("secret created: %v/%v", appAddonNS, appAddonName)

return true
}

Expand All @@ -459,11 +467,14 @@ var applicationManagerSecretPredicateFunctions = predicate.Funcs{
}

if newSecret.Namespace != appAddonNS {
klog.Infof("secret namespace not matched, appAddonNS= %v", appAddonNS)
return false
}

if newSecret.Type == "kubernetes.io/service-account-token" &&
newSecret.GetAnnotations()["kubernetes.io/service-account.name"] == appAddonName {
klog.Infof("secret deleted: %v/%v", appAddonNS, appAddonName)

return true
}

Expand Down
7 changes: 1 addition & 6 deletions pkg/controller/subscription/lease_controller.go
Original file line number Diff line number Diff line change
Expand Up @@ -62,12 +62,7 @@ func (r *LeaseReconciler) CheckHubKubeConfig(ctx context.Context) error {

func (r *LeaseReconciler) Reconcile(ctx context.Context) {
if len(r.componentNamespace) == 0 {
componentNamespace, err := utils.GetComponentNamespace()
if err != nil {
klog.Errorf("failed to get pod namespace use. error:%v", err)
}

r.componentNamespace = componentNamespace
r.componentNamespace = utils.GetComponentNamespace()
}

// Create/update lease on managed cluster first. If it fails, it could mean lease resource kind
Expand Down
2 changes: 1 addition & 1 deletion pkg/controller/subscription/lease_controller_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,7 @@ func TestLeaseReconcile(t *testing.T) {
s := scheme.Scheme
s.AddKnownTypes(corev1.SchemeGroupVersion, &corev1.Namespace{})

addontNs, _ := utils.GetComponentNamespace()
addontNs := utils.GetComponentNamespace()
pod.SetNamespace(addontNs)

tmpFile, err := os.CreateTemp("", "temptest")
Expand Down
16 changes: 12 additions & 4 deletions pkg/utils/kubernetes.go
Original file line number Diff line number Diff line change
Expand Up @@ -61,13 +61,21 @@ func ConvertLabels(labelSelector *metav1.LabelSelector) (labels.Selector, error)
return labels.Everything(), nil
}

func GetComponentNamespace() (string, error) {
func GetComponentNamespace() string {
addonNameSpace := ""
nsBytes, err := os.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
if err != nil {
return "open-cluster-management-agent-addon", err

if err != nil || len(nsBytes) == 0 {
klog.Errorf("failed to get app addon pod namespace use. error: %v", err)

addonNameSpace = "open-cluster-management-agent-addon"
} else {
addonNameSpace = string(nsBytes)
}

return string(nsBytes), nil
klog.Infof("App Addon Pod NS = %v", addonNameSpace)

return addonNameSpace
}

// GetCheckSum generates a checksum of a kube config file
Expand Down
12 changes: 9 additions & 3 deletions pkg/utils/subscription.go
Original file line number Diff line number Diff line change
Expand Up @@ -65,8 +65,11 @@ const (
annotationsSep = ","
maxGeneratedNameLength = maxNameLength - randomLength - 1
// klusterletagentaddon secret token reconcile
addonServiceAccountName = "application-manager"
addonServiceAccountNamespace = "open-cluster-management-agent-addon"
addonServiceAccountName = "application-manager"
)

var (
addonServiceAccountNamespace = GetComponentNamespace()
)

// PlacementDecisionPredicateFunctions filters PlacementDecision status decisions update
Expand Down Expand Up @@ -378,12 +381,13 @@ var ChannelPredicateFunctions = predicate.Funcs{
},
}

// ServiceAccountPredicateFunctions watches for changes in klusterlet-addon-appmgr service account in open-cluster-management-agent-addon namespace
// ServiceAccountPredicateFunctions watches for App Addon SA changes
var ServiceAccountPredicateFunctions = predicate.Funcs{
UpdateFunc: func(e event.UpdateEvent) bool {
newSA := e.ObjectNew.(*corev1.ServiceAccount)

if strings.EqualFold(newSA.Namespace, addonServiceAccountNamespace) && strings.EqualFold(newSA.Name, addonServiceAccountName) {
klog.Infof("App Addon SA updated: %v/%v", addonServiceAccountNamespace, addonServiceAccountName)
return true
}

Expand All @@ -393,6 +397,7 @@ var ServiceAccountPredicateFunctions = predicate.Funcs{
sa := e.Object.(*corev1.ServiceAccount)

if strings.EqualFold(sa.Namespace, addonServiceAccountNamespace) && strings.EqualFold(sa.Name, addonServiceAccountName) {
klog.Infof("App Addon SA created: %v/%v", addonServiceAccountNamespace, addonServiceAccountName)
return true
}

Expand All @@ -402,6 +407,7 @@ var ServiceAccountPredicateFunctions = predicate.Funcs{
sa := e.Object.(*corev1.ServiceAccount)

if strings.EqualFold(sa.Namespace, addonServiceAccountNamespace) && strings.EqualFold(sa.Name, addonServiceAccountName) {
klog.Infof("App Addon SA deleted: %v/%v", addonServiceAccountNamespace, addonServiceAccountName)
return true
}

Expand Down
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