290 lines
9.9 KiB
Go
290 lines
9.9 KiB
Go
/*
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* Please refer to the LICENSE file in the root directory of the project.
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* https://github.com/kubesphere/kubesphere/blob/master/LICENSE
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*/
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package quota
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import (
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"context"
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"time"
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"github.com/go-logr/logr"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/equality"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/client-go/tools/record"
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"k8s.io/klog/v2"
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"k8s.io/utils/clock"
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quotav1alpha2 "kubesphere.io/api/quota/v1alpha2"
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tenantv1alpha1 "kubesphere.io/api/tenant/v1beta1"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/controller"
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"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
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"sigs.k8s.io/controller-runtime/pkg/event"
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"sigs.k8s.io/controller-runtime/pkg/handler"
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"sigs.k8s.io/controller-runtime/pkg/predicate"
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"sigs.k8s.io/controller-runtime/pkg/reconcile"
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"sigs.k8s.io/controller-runtime/pkg/source"
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quotav1 "kubesphere.io/kubesphere/kube/pkg/quota/v1"
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evaluatorcore "kubesphere.io/kubesphere/kube/pkg/quota/v1/evaluator/core"
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"kubesphere.io/kubesphere/kube/pkg/quota/v1/generic"
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"kubesphere.io/kubesphere/kube/pkg/quota/v1/install"
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"kubesphere.io/kubesphere/pkg/constants"
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kscontroller "kubesphere.io/kubesphere/pkg/controller"
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"kubesphere.io/kubesphere/pkg/utils/sliceutil"
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)
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const (
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controllerName = "resourcequota"
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DefaultResyncPeriod = 5 * time.Minute
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DefaultMaxConcurrentReconciles = 8
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)
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var _ kscontroller.Controller = &Reconciler{}
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var _ reconcile.Reconciler = &Reconciler{}
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// Reconciler reconciles a Workspace object
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type Reconciler struct {
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client.Client
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logger logr.Logger
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recorder record.EventRecorder
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// Knows how to calculate usage
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registry quotav1.Registry
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MaxConcurrentReconciles int
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// Controls full recalculation of quota usage
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ResyncPeriod time.Duration
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scheme *runtime.Scheme
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}
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func (r *Reconciler) Name() string {
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return controllerName
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}
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func (r *Reconciler) SetupWithManager(mgr *kscontroller.Manager) error {
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r.logger = ctrl.Log.WithName("controllers").WithName(controllerName)
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r.recorder = mgr.GetEventRecorderFor(controllerName)
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r.scheme = mgr.GetScheme()
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r.registry = generic.NewRegistry(install.NewQuotaConfigurationForControllers(mgr.GetClient()).Evaluators())
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r.Client = mgr.GetClient()
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r.MaxConcurrentReconciles = DefaultMaxConcurrentReconciles
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r.ResyncPeriod = DefaultResyncPeriod
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c, err := ctrl.NewControllerManagedBy(mgr).
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Named(controllerName).
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WithOptions(controller.Options{
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MaxConcurrentReconciles: r.MaxConcurrentReconciles,
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}).
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For("av1alpha2.ResourceQuota{}).
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WithEventFilter(predicate.GenerationChangedPredicate{
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TypedFuncs: predicate.Funcs{
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UpdateFunc: func(e event.UpdateEvent) bool {
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oldQuota := e.ObjectOld.(*quotav1alpha2.ResourceQuota)
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newQuota := e.ObjectNew.(*quotav1alpha2.ResourceQuota)
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return !equality.Semantic.DeepEqual(oldQuota.Spec, newQuota.Spec)
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},
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},
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}).
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Build(r)
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if err != nil {
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return err
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}
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resources := []client.Object{
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&corev1.Pod{},
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&corev1.Service{},
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&corev1.PersistentVolumeClaim{},
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}
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realClock := clock.RealClock{}
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for _, resource := range resources {
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p := predicate.GenerationChangedPredicate{
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TypedFuncs: predicate.Funcs{
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GenericFunc: func(e event.GenericEvent) bool {
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return false
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},
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CreateFunc: func(e event.CreateEvent) bool {
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return false
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},
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UpdateFunc: func(e event.UpdateEvent) bool {
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notifyChange := false
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// we only want to queue the updates we care about though as too much noise will overwhelm queue.
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switch e.ObjectOld.(type) {
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case *corev1.Pod:
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oldPod := e.ObjectOld.(*corev1.Pod)
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newPod := e.ObjectNew.(*corev1.Pod)
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notifyChange = evaluatorcore.QuotaV1Pod(oldPod, realClock) && !evaluatorcore.QuotaV1Pod(newPod, realClock)
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case *corev1.Service:
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oldService := e.ObjectOld.(*corev1.Service)
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newService := e.ObjectNew.(*corev1.Service)
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notifyChange = evaluatorcore.GetQuotaServiceType(oldService) != evaluatorcore.GetQuotaServiceType(newService)
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case *corev1.PersistentVolumeClaim:
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notifyChange = true
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}
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return notifyChange
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},
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DeleteFunc: func(e event.DeleteEvent) bool {
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return true
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},
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},
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}
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if err = c.Watch(source.Kind(mgr.GetCache(), resource, handler.EnqueueRequestsFromMapFunc(r.mapper), p)); err != nil {
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return err
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}
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}
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return nil
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}
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func (r *Reconciler) mapper(ctx context.Context, h client.Object) []reconcile.Request {
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// check if the quota controller can evaluate this kind, if not, ignore it altogether...
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var result []reconcile.Request
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evaluators := r.registry.List()
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resourceQuotaNames, err := resourceQuotaNamesFor(ctx, r.Client, h.GetNamespace())
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if err != nil {
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klog.Errorf("failed to get resource quota names for: %v %T %v, err: %v", h.GetNamespace(), h, h.GetName(), err)
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return result
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}
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// only queue those quotas that are tracking a resource associated with this kind.
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for _, resourceQuotaName := range resourceQuotaNames {
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resourceQuota := "av1alpha2.ResourceQuota{}
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if err := r.Get(ctx, types.NamespacedName{Name: resourceQuotaName}, resourceQuota); err != nil {
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klog.Errorf("failed to get resource quota: %v, err: %v", resourceQuotaName, err)
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return result
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}
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resourceQuotaResources := quotav1.ResourceNames(resourceQuota.Status.Total.Hard)
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for _, evaluator := range evaluators {
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matchedResources := evaluator.MatchingResources(resourceQuotaResources)
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if len(matchedResources) > 0 {
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result = append(result, reconcile.Request{NamespacedName: types.NamespacedName{Name: resourceQuotaName}})
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break
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}
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}
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}
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klog.V(6).Infof("resource quota reconcile after resource change: %v %T %v, %+v", h.GetNamespace(), h, h.GetName(), result)
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return result
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}
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func (r *Reconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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logger := r.logger.WithValues("resourcequota", req.NamespacedName)
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rootCtx := klog.NewContext(ctx, logger)
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resourceQuota := "av1alpha2.ResourceQuota{}
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if err := r.Get(rootCtx, req.NamespacedName, resourceQuota); err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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if err := r.bindWorkspace(resourceQuota); err != nil {
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logger.Error(err, "failed to set owner reference")
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return ctrl.Result{}, err
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}
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if err := r.syncQuotaForNamespaces(resourceQuota); err != nil {
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logger.Error(err, "failed to sync quota")
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return ctrl.Result{}, err
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}
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r.recorder.Event(resourceQuota, corev1.EventTypeNormal, kscontroller.Synced, kscontroller.MessageResourceSynced)
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return ctrl.Result{RequeueAfter: r.ResyncPeriod}, nil
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}
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func (r *Reconciler) bindWorkspace(resourceQuota *quotav1alpha2.ResourceQuota) error {
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workspaceName := resourceQuota.Labels[constants.WorkspaceLabelKey]
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if workspaceName == "" {
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return nil
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}
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workspace := &tenantv1alpha1.Workspace{}
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err := r.Get(context.TODO(), types.NamespacedName{Name: workspaceName}, workspace)
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if err != nil {
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return client.IgnoreNotFound(err)
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}
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if !metav1.IsControlledBy(resourceQuota, workspace) {
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resourceQuota.OwnerReferences = nil
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if err := controllerutil.SetControllerReference(workspace, resourceQuota, r.scheme); err != nil {
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return err
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}
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err = r.Update(context.TODO(), resourceQuota)
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if err != nil {
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klog.Error(err)
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return err
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}
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}
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return nil
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}
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func (r *Reconciler) syncQuotaForNamespaces(originalQuota *quotav1alpha2.ResourceQuota) error {
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quota := originalQuota.DeepCopy()
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ctx := context.TODO()
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// get the list of namespaces that match this cluster quota
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matchingNamespaceList := corev1.NamespaceList{}
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if err := r.List(ctx, &matchingNamespaceList, &client.ListOptions{LabelSelector: labels.SelectorFromSet(quota.Spec.LabelSelector)}); err != nil {
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return err
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}
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if quota.Status.Namespaces == nil {
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quota.Status.Namespaces = make([]quotav1alpha2.ResourceQuotaStatusByNamespace, 0)
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}
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matchingNamespaceNames := make([]string, 0)
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for _, namespace := range matchingNamespaceList.Items {
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matchingNamespaceNames = append(matchingNamespaceNames, namespace.Name)
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}
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for _, namespace := range matchingNamespaceList.Items {
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namespaceName := namespace.Name
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namespaceTotals, _ := getResourceQuotasStatusByNamespace(quota.Status.Namespaces, namespaceName)
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actualUsage, err := quotaUsageCalculationFunc(namespaceName, quota.Spec.Quota.Scopes, quota.Spec.Quota.Hard, r.registry, quota.Spec.Quota.ScopeSelector)
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if err != nil {
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return err
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}
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recalculatedStatus := corev1.ResourceQuotaStatus{
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Used: actualUsage,
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Hard: quota.Spec.Quota.Hard,
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}
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// subtract old usage, add new usage
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quota.Status.Total.Used = quotav1.Subtract(quota.Status.Total.Used, namespaceTotals.Used)
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quota.Status.Total.Used = quotav1.Add(quota.Status.Total.Used, recalculatedStatus.Used)
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insertResourceQuotasStatus("a.Status.Namespaces, quotav1alpha2.ResourceQuotaStatusByNamespace{
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Namespace: namespaceName,
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ResourceQuotaStatus: recalculatedStatus,
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})
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}
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// Remove any namespaces from quota.status that no longer match.
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statusCopy := quota.Status.Namespaces.DeepCopy()
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for _, namespaceTotals := range statusCopy {
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namespaceName := namespaceTotals.Namespace
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if !sliceutil.HasString(matchingNamespaceNames, namespaceName) {
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quota.Status.Total.Used = quotav1.Subtract(quota.Status.Total.Used, namespaceTotals.Used)
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removeResourceQuotasStatusByNamespace("a.Status.Namespaces, namespaceName)
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}
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}
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quota.Status.Total.Hard = quota.Spec.Quota.Hard
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// if there's no change, no update, return early. NewAggregate returns nil on empty input
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if equality.Semantic.DeepEqual(quota, originalQuota) {
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return nil
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}
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klog.V(6).Infof("update resource quota: %+v", quota)
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if err := r.Status().Update(ctx, quota); err != nil {
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return err
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}
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return nil
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}
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// quotaUsageCalculationFunc is a function to calculate quota usage. It is only configurable for easy unit testing
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// NEVER CHANGE THIS OUTSIDE A TEST
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var quotaUsageCalculationFunc = quotav1.CalculateUsage
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