t.behrendt/authentik-kubernetes-operator
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refactor: consolidate common controller code

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This commit is contained in:
Timo Behrendt
2026-05-18 20:41:17 +02:00
parent 70ce0c2cf5
commit 8575dbecc7
8 changed files with 390 additions and 256 deletions
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pkg/controllers/policybinding/controller.go
+23 -73
View File
@@ -29,7 +29,6 @@ import (
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
@@ -38,6 +37,7 @@ import (
"k8s.io/client-go/util/workqueue"
"k8s.io/klog/v2"
"gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/internal/baseController"
v1alpha1 "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/apis/policybinding/v1alpha1"
clientset "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/generated/clientset/versioned"
operatorscheme "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/generated/clientset/versioned/scheme"
@@ -61,16 +61,14 @@ const (
DeleteAuthentikPolicyBindingFinalizer = "policybinding.t000-n.de/delete-authentik-policybinding"
)
type Controller struct {
type PolicyBindingController struct {
kubeclientset kubernetes.Interface
policyBindingClientset clientset.Interface
authentik *authentikapi.APIClient
policyBindingListener listers.PolicyBindingLister
policyBindingSynced cache.InformerSynced
workqueue workqueue.TypedRateLimitingInterface[cache.ObjectName]
recorder record.EventRecorder
controller *baseController.Controller
}
func NewController(
@@ -79,7 +77,7 @@ func NewController(
policyBindingClientset clientset.Interface,
authentik *authentikapi.APIClient,
policyBindingInformer informers.PolicyBindingInformer,
) *Controller {
) *PolicyBindingController {
logger := klog.FromContext(ctx)
utilruntime.Must(operatorscheme.AddToScheme(scheme.Scheme))
@@ -94,75 +92,36 @@ func NewController(
&workqueue.TypedBucketRateLimiter[cache.ObjectName]{Limiter: rate.NewLimiter(rate.Limit(50), 300)},
)
c := &Controller{
c := &PolicyBindingController{
kubeclientset: kubeclientset,
policyBindingClientset: policyBindingClientset,
authentik: authentik,
policyBindingListener: policyBindingInformer.Lister(),
policyBindingSynced: policyBindingInformer.Informer().HasSynced,
workqueue: workqueue.NewTypedRateLimitingQueue(ratelimiter),
recorder: recorder,
}
c.controller = baseController.NewController(
ctx,
workqueue.NewTypedRateLimitingQueue(ratelimiter),
recorder,
policyBindingInformer.Informer().HasSynced,
c.syncHandler,
)
logger.Info("Setting up event handlers")
policyBindingInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: c.enqueuePolicyBinding,
AddFunc: c.controller.Enqueue,
UpdateFunc: func(_, newObj interface{}) {
c.enqueuePolicyBinding(newObj)
c.controller.Enqueue(newObj)
},
})
return c
}
func (c *Controller) Run(ctx context.Context, workers int) error {
defer utilruntime.HandleCrash()
defer c.workqueue.ShutDown()
logger := klog.FromContext(ctx)
logger.Info("Starting PolicyBinding controller")
logger.Info("Waiting for informer caches to sync")
if ok := cache.WaitForCacheSync(ctx.Done(), c.policyBindingSynced); !ok {
return fmt.Errorf("failed to wait for caches to sync")
}
logger.Info("Starting workers", "count", workers)
for i := 0; i < workers; i++ {
go wait.UntilWithContext(ctx, c.runWorker, time.Second)
}
logger.Info("Started workers")
<-ctx.Done()
logger.Info("Shutting down workers")
return nil
func (c *PolicyBindingController) Run(ctx context.Context, workers int) error {
return c.controller.Run(ctx, workers)
}
func (c *Controller) runWorker(ctx context.Context) {
for c.processNextWorkItem(ctx) {
}
}
func (c *Controller) processNextWorkItem(ctx context.Context) bool {
objRef, shutdown := c.workqueue.Get()
logger := klog.FromContext(ctx)
if shutdown {
return false
}
defer c.workqueue.Done(objRef)
err := c.syncHandler(ctx, objRef)
if err == nil {
c.workqueue.Forget(objRef)
logger.Info("Successfully synced", "objectName", objRef)
return true
}
utilruntime.HandleErrorWithContext(ctx, err, "Error syncing; requeuing for later retry", "objectReference", objRef)
c.workqueue.AddRateLimited(objRef)
return true
}
func (c *Controller) syncHandler(ctx context.Context, objectRef cache.ObjectName) error {
func (c *PolicyBindingController) syncHandler(ctx context.Context, objectRef cache.ObjectName) error {
logger := klog.LoggerWithValues(klog.FromContext(ctx), "objectRef", objectRef)
pb, err := c.policyBindingListener.PolicyBindings(objectRef.Namespace).Get(objectRef.Name)
@@ -195,12 +154,12 @@ func (c *Controller) syncHandler(ctx context.Context, objectRef cache.ObjectName
return c.reconcileUpdate(ctx, pb)
}
func (c *Controller) ensureFinalizers(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
func (c *PolicyBindingController) ensureFinalizers(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
pb.ObjectMeta.Finalizers = append(pb.ObjectMeta.Finalizers, DeleteAuthentikPolicyBindingFinalizer)
return c.updatePolicyBinding(ctx, pb)
}
func (c *Controller) reconcileDelete(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
func (c *PolicyBindingController) reconcileDelete(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
r, err := c.authentik.PoliciesApi.PoliciesBindingsDestroy(ctx, pb.Status.PK).Execute()
if err != nil {
// This handles an edge-case, where when the PolicyBinding on Authentik has already been deleted, but the finalizer is still present. We just remove the finalizer and return.
@@ -213,7 +172,7 @@ func (c *Controller) reconcileDelete(ctx context.Context, pb *v1alpha1.PolicyBin
return c.updatePolicyBinding(ctx, pb)
}
func (c *Controller) reconcileUpdate(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
func (c *PolicyBindingController) reconcileUpdate(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
_, r, err := c.authentik.PoliciesApi.PoliciesBindingsRetrieve(ctx, pb.Status.PK).Execute()
if err != nil {
if r != nil && r.StatusCode == http.StatusNotFound {
@@ -248,7 +207,7 @@ func (c *Controller) reconcileUpdate(ctx context.Context, pb *v1alpha1.PolicyBin
return c.updatePolicyBindingStatus(ctx, pb)
}
func (c *Controller) reconcileCreate(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
func (c *PolicyBindingController) reconcileCreate(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
policyBindingRequest := &authentikapi.PolicyBindingRequest{
Target: pb.Spec.Target,
Order: pb.Spec.Order,
@@ -272,23 +231,14 @@ func (c *Controller) reconcileCreate(ctx context.Context, pb *v1alpha1.PolicyBin
return c.updatePolicyBindingStatus(ctx, pb)
}
func (c *Controller) enqueuePolicyBinding(obj interface{}) {
objectRef, err := cache.ObjectToName(obj)
if err != nil {
utilruntime.HandleError(err)
return
}
c.workqueue.Add(objectRef)
}
func (c *Controller) updatePolicyBindingStatus(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
func (c *PolicyBindingController) updatePolicyBindingStatus(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
pbCopy := pb.DeepCopy()
_, err := c.policyBindingClientset.PolicyBindingV1alpha1().PolicyBindings(pbCopy.Namespace).UpdateStatus(ctx, pbCopy, metav1.UpdateOptions{FieldManager: FieldManager})
return err
}
// Update metadata, spec, etc. of the PolicyBinding object.
func (c *Controller) updatePolicyBinding(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
func (c *PolicyBindingController) updatePolicyBinding(ctx context.Context, pb *v1alpha1.PolicyBinding) error {
pbCopy := pb.DeepCopy()
_, err := c.policyBindingClientset.PolicyBindingV1alpha1().PolicyBindings(pbCopy.Namespace).Update(ctx, pbCopy, metav1.UpdateOptions{FieldManager: FieldManager})
return err
pkg/controllers/policybinding/controller_test.go
+3 -17
View File
@@ -198,20 +198,6 @@ func TestController_syncHandler_notFound(t *testing.T) {
}
}
func TestController_enqueuePolicyBinding(t *testing.T) {
server := newAuthentikTestServer(t, authentikTestHandlers{})
t.Cleanup(server.Close)
ctrl, _, cancel := newTestController(t, testPolicyBinding(), server.URL)
t.Cleanup(cancel)
ctrl.enqueuePolicyBinding(testPolicyBinding())
if ctrl.workqueue.Len() != 1 {
t.Fatalf("workqueue length = %d, want 1", ctrl.workqueue.Len())
}
}
// --- test helpers ---
func testPolicyBinding() *v1alpha1.PolicyBinding {
@@ -232,7 +218,7 @@ func testPolicyBinding() *v1alpha1.PolicyBinding {
}
}
func newTestController(t *testing.T, pb *v1alpha1.PolicyBinding, authentikURL string) (*Controller, context.Context, context.CancelFunc) {
func newTestController(t *testing.T, pb *v1alpha1.PolicyBinding, authentikURL string) (*PolicyBindingController, context.Context, context.CancelFunc) {
t.Helper()
ctx, cancel := context.WithCancel(context.Background())
ctrl, _, stop := newTestControllerWithContext(t, ctx, pb, authentikURL)
@@ -242,7 +228,7 @@ func newTestController(t *testing.T, pb *v1alpha1.PolicyBinding, authentikURL st
}
}
func newTestControllerWithContext(t *testing.T, ctx context.Context, pb *v1alpha1.PolicyBinding, authentikURL string) (*Controller, context.Context, func()) {
func newTestControllerWithContext(t *testing.T, ctx context.Context, pb *v1alpha1.PolicyBinding, authentikURL string) (*PolicyBindingController, context.Context, func()) {
t.Helper()
authentikClient := newAuthentikAPIClientForTest(t, authentikURL)
@@ -350,7 +336,7 @@ func writeJSON(t *testing.T, w http.ResponseWriter, status int, body any) {
}
}
func getPolicyBinding(t *testing.T, ctrl *Controller, namespace, name string) *v1alpha1.PolicyBinding {
func getPolicyBinding(t *testing.T, ctrl *PolicyBindingController, namespace, name string) *v1alpha1.PolicyBinding {
t.Helper()
got, err := ctrl.policyBindingClientset.PolicyBindingV1alpha1().PolicyBindings(namespace).Get(