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 8e8989c576
commit 81529fa35f
8 changed files with 362 additions and 270 deletions
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pkg/controllers/application/controller.go
+23 -73
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@@ -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"
@@ -39,6 +38,7 @@ import (
"k8s.io/klog/v2"
v1alpha1 "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/apis/application/v1alpha1"
controllers "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/controllers"
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"
informers "gitea.t000-n.de/t.behrendt/authentik-kubernetes-operator/pkg/generated/informers/externalversions/application/v1alpha1"
@@ -61,16 +61,14 @@ const (
DeleteAuthentikApplicationFinalizer = "application.t000-n.de/delete-authentik-application"
)
type Controller struct {
type ApplicationController struct {
kubeclientset kubernetes.Interface
applicationClientset clientset.Interface
authentik *authentikapi.APIClient
applicationListener listers.ApplicationLister
applicationSynced cache.InformerSynced
workqueue workqueue.TypedRateLimitingInterface[cache.ObjectName]
recorder record.EventRecorder
controller *controllers.Controller
}
func NewController(
@@ -79,7 +77,7 @@ func NewController(
applicationClientset clientset.Interface,
authentik *authentikapi.APIClient,
applicationInformer informers.ApplicationInformer,
) *Controller {
) *ApplicationController {
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 := &ApplicationController{
kubeclientset: kubeclientset,
applicationClientset: applicationClientset,
authentik: authentik,
applicationListener: applicationInformer.Lister(),
applicationSynced: applicationInformer.Informer().HasSynced,
workqueue: workqueue.NewTypedRateLimitingQueue(ratelimiter),
recorder: recorder,
}
c.controller = controllers.NewController(
ctx,
workqueue.NewTypedRateLimitingQueue(ratelimiter),
recorder,
applicationInformer.Informer().HasSynced,
c.syncHandler,
)
logger.Info("Setting up event handlers")
applicationInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: c.enqueueApplication,
AddFunc: c.controller.Enqueue,
UpdateFunc: func(_, newObj interface{}) {
c.enqueueApplication(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 Application controller")
logger.Info("Waiting for informer caches to sync")
if ok := cache.WaitForCacheSync(ctx.Done(), c.applicationSynced); !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 *ApplicationController) 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 *ApplicationController) syncHandler(ctx context.Context, objectRef cache.ObjectName) error {
logger := klog.LoggerWithValues(klog.FromContext(ctx), "objectRef", objectRef)
app, err := c.applicationListener.Applications(objectRef.Namespace).Get(objectRef.Name)
@@ -195,12 +154,12 @@ func (c *Controller) syncHandler(ctx context.Context, objectRef cache.ObjectName
return c.reconcileUpdate(ctx, app)
}
func (c *Controller) ensureFinalizers(ctx context.Context, app *v1alpha1.Application) error {
func (c *ApplicationController) ensureFinalizers(ctx context.Context, app *v1alpha1.Application) error {
app.ObjectMeta.Finalizers = append(app.ObjectMeta.Finalizers, DeleteAuthentikApplicationFinalizer)
return c.updateApplication(ctx, app)
}
func (c *Controller) reconcileDelete(ctx context.Context, app *v1alpha1.Application) error {
func (c *ApplicationController) reconcileDelete(ctx context.Context, app *v1alpha1.Application) error {
r, err := c.authentik.CoreApi.CoreApplicationsDestroy(ctx, app.Status.PK).Execute()
if err != nil {
// This handles an edge-case, where when the Application 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, app *v1alpha1.Applicat
return c.updateApplication(ctx, app)
}
func (c *Controller) reconcileUpdate(ctx context.Context, app *v1alpha1.Application) error {
func (c *ApplicationController) reconcileUpdate(ctx context.Context, app *v1alpha1.Application) error {
_, r, err := c.authentik.CoreApi.CoreApplicationsRetrieve(ctx, app.Spec.Slug).Execute()
if err != nil {
if r != nil && r.StatusCode == http.StatusNotFound {
@@ -239,7 +198,7 @@ func (c *Controller) reconcileUpdate(ctx context.Context, app *v1alpha1.Applicat
return c.updateApplicationStatus(ctx, app)
}
func (c *Controller) reconcileCreate(ctx context.Context, app *v1alpha1.Application) error {
func (c *ApplicationController) reconcileCreate(ctx context.Context, app *v1alpha1.Application) error {
applicationRequest := &authentikapi.ApplicationRequest{
Name: app.Spec.Name,
Slug: app.Spec.Slug,
@@ -254,23 +213,14 @@ func (c *Controller) reconcileCreate(ctx context.Context, app *v1alpha1.Applicat
return c.updateApplicationStatus(ctx, app)
}
func (c *Controller) enqueueApplication(obj interface{}) {
objectRef, err := cache.ObjectToName(obj)
if err != nil {
utilruntime.HandleError(err)
return
}
c.workqueue.Add(objectRef)
}
func (c *Controller) updateApplicationStatus(ctx context.Context, app *v1alpha1.Application) error {
func (c *ApplicationController) updateApplicationStatus(ctx context.Context, app *v1alpha1.Application) error {
appCopy := app.DeepCopy()
_, err := c.applicationClientset.ApplicationV1alpha1().Applications(appCopy.Namespace).UpdateStatus(ctx, appCopy, metav1.UpdateOptions{FieldManager: FieldManager})
return err
}
// Update metadata, spec, etc. of the Application object.
func (c *Controller) updateApplication(ctx context.Context, app *v1alpha1.Application) error {
func (c *ApplicationController) updateApplication(ctx context.Context, app *v1alpha1.Application) error {
appCopy := app.DeepCopy()
_, err := c.applicationClientset.ApplicationV1alpha1().Applications(appCopy.Namespace).Update(ctx, appCopy, metav1.UpdateOptions{FieldManager: FieldManager})
if err != nil {