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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 shoot
import (
"context"
"fmt"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/cluster"
"sigs.k8s.io/controller-runtime/pkg/manager"
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/client/kubernetes"
"github.com/gardener/gardener/pkg/client/kubernetes/clientmap"
"github.com/gardener/gardener/pkg/gardenlet/apis/config"
"github.com/gardener/gardener/pkg/gardenlet/controller/shoot/care"
"github.com/gardener/gardener/pkg/gardenlet/controller/shoot/shoot"
"github.com/gardener/gardener/pkg/gardenlet/controller/shoot/state"
)
// AddToManager adds all Shoot controllers to the given manager.
func AddToManager(
ctx context.Context,
mgr manager.Manager,
gardenCluster cluster.Cluster,
seedCluster cluster.Cluster,
seedClientSet kubernetes.Interface,
shootClientMap clientmap.ClientMap,
cfg config.GardenletConfiguration,
identity *gardencorev1beta1.Gardener,
gardenClusterIdentity string,
) error {
var responsibleForUnmanagedSeed bool
if err := gardenCluster.GetAPIReader().Get(ctx, client.ObjectKey{Name: cfg.SeedConfig.Name, Namespace: v1beta1constants.GardenNamespace}, &seedmanagementv1alpha1.ManagedSeed{}); err != nil {
if !apierrors.IsNotFound(err) {
return fmt.Errorf("failed checking whether gardenlet is responsible for a managed seed: %w", err)
}
// ManagedSeed was not found, hence gardenlet is responsible for an unmanaged seed.
responsibleForUnmanagedSeed = true
}
shootStateControllerEnabled := responsibleForUnmanagedSeed && pointer.IntDeref(cfg.Controllers.ShootState.ConcurrentSyncs, 0) > 0
if err := (&shoot.Reconciler{
SeedClientSet: seedClientSet,
ShootClientMap: shootClientMap,
Config: cfg,
Identity: identity,
GardenClusterIdentity: gardenClusterIdentity,
ShootStateControllerEnabled: shootStateControllerEnabled,
}).AddToManager(mgr, gardenCluster); err != nil {
return fmt.Errorf("failed adding main reconciler: %w", err)
}
if err := (&care.Reconciler{
SeedClientSet: seedClientSet,
ShootClientMap: shootClientMap,
Config: cfg,
Identity: identity,
GardenClusterIdentity: gardenClusterIdentity,
SeedName: cfg.SeedConfig.Name,
}).AddToManager(mgr, gardenCluster); err != nil {
return fmt.Errorf("failed adding care reconciler: %w", err)
}
// If gardenlet is responsible for an unmanaged seed we want to add the state reconciler which performs periodic
// backups of shoot states (see GEP-22).
if shootStateControllerEnabled {
mgr.GetLogger().Info("Adding shoot state reconciler since gardenlet is responsible for an unmanaged seed")
if err := (&state.Reconciler{
Config: *cfg.Controllers.ShootState,
SeedName: cfg.SeedConfig.Name,
}).AddToManager(mgr, gardenCluster, seedCluster); err != nil {
return fmt.Errorf("failed adding state reconciler: %w", err)
}
}
return nil
}