/
add.go
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/
add.go
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// Copyright 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 managedseedset
import (
"context"
"reflect"
"github.com/go-logr/logr"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/utils/ptr"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"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"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
seedmanagementv1alpha1 "github.com/gardener/gardener/pkg/apis/seedmanagement/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
gardenerutils "github.com/gardener/gardener/pkg/utils/gardener"
kubernetesutils "github.com/gardener/gardener/pkg/utils/kubernetes"
)
// ControllerName is the name of this controller.
const ControllerName = "managedseedset"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(ctx context.Context, mgr manager.Manager) error {
if r.Client == nil {
r.Client = mgr.GetClient()
}
if r.Actuator == nil {
replicaFactory := ReplicaFactoryFunc(NewReplica)
replicaGetter := NewReplicaGetter(r.Client, mgr.GetAPIReader(), replicaFactory)
r.Actuator = NewActuator(r.Client, replicaGetter, replicaFactory, &r.Config, mgr.GetEventRecorderFor(ControllerName+"-controller"))
}
c, err := builder.
ControllerManagedBy(mgr).
Named(ControllerName).
For(&seedmanagementv1alpha1.ManagedSeedSet{}, builder.WithPredicates(predicate.GenerationChangedPredicate{})).
WithOptions(controller.Options{
MaxConcurrentReconciles: ptr.Deref(r.Config.ConcurrentSyncs, 0),
}).
Watches(
&gardencorev1beta1.Shoot{},
handler.EnqueueRequestForOwner(
mgr.GetScheme(),
mgr.GetRESTMapper(),
&seedmanagementv1alpha1.ManagedSeedSet{},
handler.OnlyControllerOwner(),
),
builder.WithPredicates(r.ShootPredicate(ctx)),
).
Watches(
&seedmanagementv1alpha1.ManagedSeed{},
handler.EnqueueRequestForOwner(
mgr.GetScheme(),
mgr.GetRESTMapper(),
&seedmanagementv1alpha1.ManagedSeedSet{},
handler.OnlyControllerOwner(),
),
builder.WithPredicates(r.ManagedSeedPredicate(ctx)),
).
Build(r)
if err != nil {
return err
}
return c.Watch(
source.Kind(mgr.GetCache(), &gardencorev1beta1.Seed{}),
mapper.EnqueueRequestsFrom(ctx, mgr.GetCache(), mapper.MapFunc(r.MapSeedToManagedSeedSet), mapper.UpdateWithNew, c.GetLogger()),
r.SeedPredicate(ctx),
)
}
// ShootPredicate returns the predicate for Shoot events.
func (r *Reconciler) ShootPredicate(ctx context.Context) predicate.Predicate {
return &shootPredicate{
ctx: ctx,
reader: r.Client,
}
}
type shootPredicate struct {
ctx context.Context
reader client.Reader
}
func (p *shootPredicate) Create(e event.CreateEvent) bool { return p.filterShoot(e.Object) }
func (p *shootPredicate) Update(e event.UpdateEvent) bool {
shoot, ok := e.ObjectNew.(*gardencorev1beta1.Shoot)
if !ok {
return false
}
oldShoot, ok := e.ObjectOld.(*gardencorev1beta1.Shoot)
if !ok {
return false
}
if !reflect.DeepEqual(shoot.DeletionTimestamp, oldShoot.DeletionTimestamp) || shootHealthStatus(shoot) != shootHealthStatus(oldShoot) {
return true
}
return p.filterShoot(e.ObjectNew)
}
func (p *shootPredicate) Delete(e event.DeleteEvent) bool {
shoot, ok := e.Object.(*gardencorev1beta1.Shoot)
if !ok {
return false
}
managedSeedSetPendingReplicaReason, ok := p.getManagedSeedSetPendingReplicaReason(shoot)
if !ok {
return false
}
if managedSeedSetPendingReplicaReason == seedmanagementv1alpha1.ShootDeletingReason {
return true
}
return p.filterShoot(e.Object)
}
func (p *shootPredicate) Generic(_ event.GenericEvent) bool { return false }
// Return true only if the Shoot belongs to the pending replica and it progressed from the state
// that caused the replica to be pending
func (p *shootPredicate) filterShoot(obj client.Object) bool {
shoot, ok := obj.(*gardencorev1beta1.Shoot)
if !ok {
return false
}
managedSeedSetPendingReplicaReason, ok := p.getManagedSeedSetPendingReplicaReason(shoot)
if !ok {
return false
}
switch managedSeedSetPendingReplicaReason {
case seedmanagementv1alpha1.ShootReconcilingReason:
return shootReconcileFailed(shoot) || shootReconcileSucceeded(shoot) || shoot.DeletionTimestamp != nil
case seedmanagementv1alpha1.ShootDeletingReason:
return shootDeleteFailed(shoot)
case seedmanagementv1alpha1.ShootReconcileFailedReason:
return !shootReconcileFailed(shoot)
case seedmanagementv1alpha1.ShootDeleteFailedReason:
return !shootDeleteFailed(shoot)
case seedmanagementv1alpha1.ShootNotHealthyReason:
return shootHealthStatus(shoot) == gardenerutils.ShootStatusHealthy
default:
return false
}
}
func (p *shootPredicate) getManagedSeedSetPendingReplicaReason(shoot *gardencorev1beta1.Shoot) (seedmanagementv1alpha1.PendingReplicaReason, bool) {
controllerRef := metav1.GetControllerOf(shoot)
if controllerRef == nil {
return "", false
}
managedSeedSet := &seedmanagementv1alpha1.ManagedSeedSet{}
if err := p.reader.Get(p.ctx, kubernetesutils.Key(shoot.Namespace, controllerRef.Name), managedSeedSet); err != nil {
return "", false
}
if managedSeedSet.Status.PendingReplica == nil || managedSeedSet.Status.PendingReplica.Name != shoot.Name {
return "", false
}
return managedSeedSet.Status.PendingReplica.Reason, true
}
// ManagedSeedPredicate returns the predicate for ManagedSeed events.
func (r *Reconciler) ManagedSeedPredicate(ctx context.Context) predicate.Predicate {
return &managedSeedPredicate{
ctx: ctx,
reader: r.Client,
}
}
type managedSeedPredicate struct {
ctx context.Context
reader client.Reader
}
func (p *managedSeedPredicate) Create(e event.CreateEvent) bool {
return p.filterManagedSeed(e.Object)
}
func (p *managedSeedPredicate) Update(e event.UpdateEvent) bool {
managedSeed, ok := e.ObjectNew.(*seedmanagementv1alpha1.ManagedSeed)
if !ok {
return false
}
oldManagedSeed, ok := e.ObjectOld.(*seedmanagementv1alpha1.ManagedSeed)
if !ok {
return false
}
if !reflect.DeepEqual(managedSeed.DeletionTimestamp, oldManagedSeed.DeletionTimestamp) {
return true
}
return p.filterManagedSeed(e.ObjectNew)
}
func (p *managedSeedPredicate) Delete(e event.DeleteEvent) bool {
managedSeed, ok := e.Object.(*seedmanagementv1alpha1.ManagedSeed)
if !ok {
return false
}
managedSeedSetPendingReplicaReason, ok := p.getManagedSeedSetPendingReplicaReason(managedSeed)
if !ok {
return false
}
if managedSeedSetPendingReplicaReason == seedmanagementv1alpha1.ManagedSeedDeletingReason {
return true
}
return p.filterManagedSeed(e.Object)
}
func (p *managedSeedPredicate) Generic(_ event.GenericEvent) bool { return false }
// Returns true only if the ManagedSeed belongs to the pending replica and it progressed from the state
// that caused the replica to be pending.
func (p *managedSeedPredicate) filterManagedSeed(obj client.Object) bool {
managedSeed, ok := obj.(*seedmanagementv1alpha1.ManagedSeed)
if !ok {
return false
}
managedSeedSetPendingReplicaReason, ok := p.getManagedSeedSetPendingReplicaReason(managedSeed)
if !ok {
return false
}
switch managedSeedSetPendingReplicaReason {
case seedmanagementv1alpha1.ManagedSeedPreparingReason:
return managedSeedRegistered(managedSeed) || managedSeed.DeletionTimestamp != nil
default:
return false
}
}
func (p *managedSeedPredicate) getManagedSeedSetPendingReplicaReason(managedSeed *seedmanagementv1alpha1.ManagedSeed) (seedmanagementv1alpha1.PendingReplicaReason, bool) {
controllerRef := metav1.GetControllerOf(managedSeed)
if controllerRef == nil {
return "", false
}
managedSeedSet := &seedmanagementv1alpha1.ManagedSeedSet{}
if err := p.reader.Get(p.ctx, kubernetesutils.Key(managedSeed.Namespace, controllerRef.Name), managedSeedSet); err != nil {
return "", false
}
if managedSeedSet.Status.PendingReplica == nil || managedSeedSet.Status.PendingReplica.Name != managedSeed.Name {
return "", false
}
return managedSeedSet.Status.PendingReplica.Reason, true
}
// SeedPredicate returns the predicate for Seed events.
func (r *Reconciler) SeedPredicate(ctx context.Context) predicate.Predicate {
return &seedPredicate{
ctx: ctx,
reader: r.Client,
}
}
type seedPredicate struct {
ctx context.Context
reader client.Reader
}
func (p *seedPredicate) Create(e event.CreateEvent) bool { return p.filterSeed(e.Object) }
func (p *seedPredicate) Update(e event.UpdateEvent) bool {
seed, ok := e.ObjectNew.(*gardencorev1beta1.Seed)
if !ok {
return false
}
oldSeed, ok := e.ObjectOld.(*gardencorev1beta1.Seed)
if !ok {
return false
}
if seedReady(seed) != seedReady(oldSeed) {
return true
}
return p.filterSeed(e.ObjectNew)
}
func (p *seedPredicate) Delete(e event.DeleteEvent) bool { return p.filterSeed(e.Object) }
func (p *seedPredicate) Generic(_ event.GenericEvent) bool { return false }
// Returns true only if the Seed belongs to the pending replica and it progressed from the state
// that caused the replica to be pending.
func (p *seedPredicate) filterSeed(obj client.Object) bool {
seed, ok := obj.(*gardencorev1beta1.Seed)
if !ok {
return false
}
managedSeed := &seedmanagementv1alpha1.ManagedSeed{}
if err := p.reader.Get(p.ctx, kubernetesutils.Key(v1beta1constants.GardenNamespace, seed.Name), managedSeed); err != nil {
return false
}
controllerRef := metav1.GetControllerOf(managedSeed)
if controllerRef == nil {
return false
}
managedSeedSet := &seedmanagementv1alpha1.ManagedSeedSet{}
if err := p.reader.Get(p.ctx, kubernetesutils.Key(seed.Namespace, controllerRef.Name), managedSeedSet); err != nil {
return false
}
if managedSeedSet.Status.PendingReplica == nil || managedSeedSet.Status.PendingReplica.Name != seed.Name {
return false
}
switch managedSeedSet.Status.PendingReplica.Reason {
case seedmanagementv1alpha1.SeedNotReadyReason:
return seedReady(seed)
default:
return false
}
}
// MapSeedToManagedSeedSet is a mapper.MapFunc for mapping Seeds to referencing ManagedSeedSet.
func (r *Reconciler) MapSeedToManagedSeedSet(ctx context.Context, log logr.Logger, reader client.Reader, obj client.Object) []reconcile.Request {
seed, ok := obj.(*gardencorev1beta1.Seed)
if !ok {
return nil
}
managedSeed := &seedmanagementv1alpha1.ManagedSeed{}
if err := reader.Get(ctx, kubernetesutils.Key(v1beta1constants.GardenNamespace, seed.Name), managedSeed); err != nil {
if !apierrors.IsNotFound(err) {
log.Error(err, "Failed to get ManagedSeed for Seed", "seed", client.ObjectKeyFromObject(seed))
}
return nil
}
controllerRef := metav1.GetControllerOf(managedSeed)
if controllerRef == nil {
return nil
}
managedSeedSet := &seedmanagementv1alpha1.ManagedSeedSet{}
if err := reader.Get(ctx, kubernetesutils.Key(managedSeed.Namespace, controllerRef.Name), managedSeedSet); err != nil {
if !apierrors.IsNotFound(err) {
log.Error(err, "Failed to get ManagedSeedSet for ManagedSeed", "managedseed", client.ObjectKeyFromObject(managedSeed))
}
return nil
}
return []reconcile.Request{{NamespacedName: types.NamespacedName{Namespace: managedSeedSet.Namespace, Name: managedSeedSet.Name}}}
}