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add.go
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add.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package controller
import (
"context"
"fmt"
"k8s.io/apimachinery/pkg/util/wait"
kubernetesclientset "k8s.io/client-go/kubernetes"
"k8s.io/utils/clock"
"k8s.io/utils/ptr"
"sigs.k8s.io/controller-runtime/pkg/cluster"
"sigs.k8s.io/controller-runtime/pkg/manager"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
resourcesv1alpha1 "github.com/gardener/gardener/pkg/apis/resources/v1alpha1"
"github.com/gardener/gardener/pkg/controller/tokenrequestor"
"github.com/gardener/gardener/pkg/resourcemanager/apis/config"
"github.com/gardener/gardener/pkg/resourcemanager/controller/csrapprover"
"github.com/gardener/gardener/pkg/resourcemanager/controller/garbagecollector"
"github.com/gardener/gardener/pkg/resourcemanager/controller/health"
"github.com/gardener/gardener/pkg/resourcemanager/controller/managedresource"
"github.com/gardener/gardener/pkg/resourcemanager/controller/networkpolicy"
"github.com/gardener/gardener/pkg/resourcemanager/controller/node"
"github.com/gardener/gardener/pkg/resourcemanager/controller/tokeninvalidator"
resourcemanagerpredicate "github.com/gardener/gardener/pkg/resourcemanager/predicate"
)
// AddToManager adds all controllers to the given manager.
func AddToManager(ctx context.Context, mgr manager.Manager, sourceCluster, targetCluster cluster.Cluster, cfg *config.ResourceManagerConfiguration) error {
targetClientSet, err := kubernetesclientset.NewForConfig(targetCluster.GetConfig())
if err != nil {
return fmt.Errorf("failed creating Kubernetes client: %w", err)
}
if cfg.Controllers.KubeletCSRApprover.Enabled {
if err := (&csrapprover.Reconciler{
CertificatesClient: targetClientSet.CertificatesV1().CertificateSigningRequests(),
Config: cfg.Controllers.KubeletCSRApprover,
}).AddToManager(mgr, sourceCluster, targetCluster); err != nil {
return fmt.Errorf("failed adding Kubelet CSR Approver controller: %w", err)
}
}
if cfg.Controllers.GarbageCollector.Enabled {
if err := (&garbagecollector.Reconciler{
Config: cfg.Controllers.GarbageCollector,
Clock: clock.RealClock{},
}).AddToManager(mgr, targetCluster); err != nil {
return fmt.Errorf("failed adding garbage collector controller: %w", err)
}
}
if err := health.AddToManager(ctx, mgr, sourceCluster, targetCluster, *cfg); err != nil {
return fmt.Errorf("failed adding health controller: %w", err)
}
if err := (&managedresource.Reconciler{
Config: cfg.Controllers.ManagedResource,
ClassFilter: resourcemanagerpredicate.NewClassFilter(*cfg.Controllers.ResourceClass),
ClusterID: *cfg.Controllers.ClusterID,
GarbageCollectorActivated: cfg.Controllers.GarbageCollector.Enabled,
}).AddToManager(ctx, mgr, sourceCluster, targetCluster); err != nil {
return fmt.Errorf("failed adding managed resource controller: %w", err)
}
if cfg.Controllers.NetworkPolicy.Enabled {
if err := (&networkpolicy.Reconciler{
Config: cfg.Controllers.NetworkPolicy,
}).AddToManager(ctx, mgr, targetCluster); err != nil {
return fmt.Errorf("failed adding networkpolicy controller: %w", err)
}
}
if cfg.Controllers.TokenInvalidator.Enabled {
if err := (&tokeninvalidator.Reconciler{
Config: cfg.Controllers.TokenInvalidator,
}).AddToManager(ctx, mgr, targetCluster); err != nil {
return fmt.Errorf("failed adding token invalidator controller: %w", err)
}
}
if cfg.Controllers.TokenRequestor.Enabled {
if err := (&tokenrequestor.Reconciler{
ConcurrentSyncs: ptr.Deref(cfg.Controllers.TokenRequestor.ConcurrentSyncs, 0),
Clock: clock.RealClock{},
JitterFunc: wait.Jitter,
APIAudiences: []string{v1beta1constants.GardenerAudience},
Class: ptr.To(resourcesv1alpha1.ResourceManagerClassShoot),
}).AddToManager(mgr, sourceCluster, targetCluster); err != nil {
return fmt.Errorf("failed adding token requestor controller: %w", err)
}
}
if err := node.AddToManager(mgr, targetCluster, *cfg); err != nil {
return fmt.Errorf("failed adding node controller: %w", err)
}
return nil
}