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resource_manager.go
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resource_manager.go
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// Copyright (c) 2018 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 botanist
import (
"context"
"fmt"
"time"
"github.com/gardener/gardener/pkg/operation/botanist/constants"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
"github.com/gardener/gardener/pkg/utils/retry"
resourcesv1alpha1 "github.com/gardener/gardener-resource-manager/pkg/apis/resources/v1alpha1"
k8sretry "k8s.io/client-go/util/retry"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// DeleteManagedResources deletes all managed resources labeled with `origin=gardener` from the Shoot namespace in the Seed.
func (b *Botanist) DeleteManagedResources(ctx context.Context) error {
return b.K8sSeedClient.Client().DeleteAllOf(
ctx,
&resourcesv1alpha1.ManagedResource{},
client.InNamespace(b.Shoot.SeedNamespace),
client.MatchingLabels{constants.ManagedResourceLabelKeyOrigin: constants.ManagedResourceLabelValueGardener},
)
}
// WaitUntilManagedResourcesDeleted waits until all managed resources labeled with `origin=gardener` are gone or the context is cancelled.
func (b *Botanist) WaitUntilManagedResourcesDeleted(ctx context.Context) error {
return b.waitUntilManagedResourceAreDeleted(ctx, client.InNamespace(b.Shoot.SeedNamespace), client.MatchingLabels{constants.ManagedResourceLabelKeyOrigin: constants.ManagedResourceLabelValueGardener})
}
// WaitUntilAllManagedResourcesDeleted waits until all managed resources are gone or the context is cancelled.
func (b *Botanist) WaitUntilAllManagedResourcesDeleted(ctx context.Context) error {
return b.waitUntilManagedResourceAreDeleted(ctx, client.InNamespace(b.Shoot.SeedNamespace))
}
func (b *Botanist) waitUntilManagedResourceAreDeleted(ctx context.Context, listOpt ...client.ListOption) error {
return retry.Until(ctx, 5*time.Second, func(ctx context.Context) (done bool, err error) {
managedResources := &resourcesv1alpha1.ManagedResourceList{}
if err := b.K8sSeedClient.Client().List(ctx,
managedResources,
listOpt...); err != nil {
return retry.SevereError(err)
}
if len(managedResources.Items) == 0 {
return retry.Ok()
}
names := make([]string, 0, len(managedResources.Items))
for _, resource := range managedResources.Items {
names = append(names, resource.Name)
}
b.Logger.Infof("Waiting until all managed resources have been deleted in the shoot cluster...")
return retry.MinorError(fmt.Errorf("not all managed resources have been deleted in the shoot cluster (still existing: %s)", names))
})
}
// KeepManagedResourcesObjects sets ManagedResource.Spec.KeepObjects to true.
func (b *Botanist) KeepManagedResourcesObjects(ctx context.Context) error {
managedResources := &resourcesv1alpha1.ManagedResourceList{}
if err := b.K8sSeedClient.Client().List(ctx,
managedResources,
client.InNamespace(b.Shoot.SeedNamespace),
); err != nil {
return fmt.Errorf("failed to list all managed resource, %v", err)
}
if len(managedResources.Items) == 0 {
return nil
}
for _, resource := range managedResources.Items {
if err := kutil.TryUpdate(ctx, k8sretry.DefaultRetry, b.K8sSeedClient.Client(), &resource, func() error {
keepObj := true
resource.Spec.KeepObjects = &keepObj
return nil
}); client.IgnoreNotFound(err) != nil {
return fmt.Errorf("failed to update managed resource %q, %v", resource.GetName(), err)
}
}
return nil
}
// DeleteAllManagedResourcesObjects deletes all managed resources from the Shoot namespace in the Seed.
func (b *Botanist) DeleteAllManagedResourcesObjects(ctx context.Context) error {
return b.K8sSeedClient.Client().DeleteAllOf(
ctx,
&resourcesv1alpha1.ManagedResource{},
client.InNamespace(b.Shoot.SeedNamespace),
)
}