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upb_controller.go
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/
upb_controller.go
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/*
Copyright 2022 The Kubermatic Kubernetes Platform contributors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package mla
import (
"context"
"fmt"
"go.uber.org/zap"
kubermaticv1 "k8c.io/kubermatic/v2/pkg/apis/kubermatic/v1"
"k8c.io/kubermatic/v2/pkg/kubernetes"
"k8s.io/utils/strings/slices"
ctrlruntimeclient "sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
)
// TODO remove this in v2.22
// userProjectBindingReconciler just cleans up the unnecessary mla finalizer from UserProjectBindings, which were made obsolete
// in 2.21.2, through https://github.com/kubermatic/kubermatic/pull/11076
type userProjectBindingReconciler struct {
ctrlruntimeclient.Client
log *zap.SugaredLogger
}
func newUserProjectBindingReconciler(
mgr manager.Manager,
log *zap.SugaredLogger,
numWorkers int,
) error {
log = log.Named(ControllerName)
client := mgr.GetClient()
reconciler := &userProjectBindingReconciler{
Client: client,
log: log.Named("userprojectbinding-finalizer-cleaner"),
}
ctrlOptions := controller.Options{
Reconciler: reconciler,
MaxConcurrentReconciles: numWorkers,
}
c, err := controller.New(ControllerName, mgr, ctrlOptions)
if err != nil {
return err
}
finalizerPredicate := predicate.NewPredicateFuncs(func(object ctrlruntimeclient.Object) bool {
// We don't trigger reconciliation for already cleaned up upb.
upb := object.(*kubermaticv1.UserProjectBinding)
return slices.Contains(upb.Finalizers, mlaFinalizer)
})
if err := c.Watch(source.Kind(mgr.GetCache(), &kubermaticv1.UserProjectBinding{}), &handler.EnqueueRequestForObject{}, finalizerPredicate); err != nil {
return fmt.Errorf("failed to watch UserProjectBindings: %w", err)
}
return err
}
func (r *userProjectBindingReconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
log := r.log.With("request", request)
log.Debug("Processing")
upb := &kubermaticv1.UserProjectBinding{}
if err := r.Get(ctx, request.NamespacedName, upb); err != nil {
return reconcile.Result{}, ctrlruntimeclient.IgnoreNotFound(err)
}
return reconcile.Result{}, kubernetes.TryRemoveFinalizer(ctx, r.Client, upb, mlaFinalizer)
}