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extension.go
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extension.go
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// Copyright (c) 2020 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"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/operation/botanist/component/extensions/extension"
"github.com/gardener/gardener/pkg/utils"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// DefaultExtension creates the default deployer for the Extension custom resources.
func (b *Botanist) DefaultExtension(ctx context.Context, seedClient client.Client) (extension.Interface, error) {
controllerRegistrations := &gardencorev1beta1.ControllerRegistrationList{}
if err := b.K8sGardenClient.Client().List(ctx, controllerRegistrations); err != nil {
return nil, err
}
extensions, err := mergeExtensions(controllerRegistrations.Items, b.Shoot.Info.Spec.Extensions, b.Shoot.SeedNamespace)
if err != nil {
return nil, fmt.Errorf("cannot calculate required extensions for shoot %s: %v", b.Shoot.Info.Name, err)
}
return extension.New(
b.Logger,
seedClient,
&extension.Values{
Namespace: b.Shoot.SeedNamespace,
Extensions: extensions,
},
extension.DefaultInterval,
extension.DefaultSevereThreshold,
extension.DefaultTimeout,
), nil
}
// DeployExtensions deploys the Extension custom resources and triggers the restore operation in case
// the Shoot is in the restore phase of the control plane migration.
func (b *Botanist) DeployExtensions(ctx context.Context) error {
if b.isRestorePhase() {
return b.Shoot.Components.Extensions.Extension.Restore(ctx, b.ShootState)
}
return b.Shoot.Components.Extensions.Extension.Deploy(ctx)
}
func mergeExtensions(registrations []gardencorev1beta1.ControllerRegistration, extensions []gardencorev1beta1.Extension, namespace string) (map[string]extension.Extension, error) {
var (
typeToExtension = make(map[string]extension.Extension)
requiredExtensions = make(map[string]extension.Extension)
)
// Extensions enabled by default for all Shoot clusters.
for _, reg := range registrations {
for _, res := range reg.Spec.Resources {
if res.Kind != extensionsv1alpha1.ExtensionResource {
continue
}
timeout := extension.DefaultTimeout
if res.ReconcileTimeout != nil {
timeout = res.ReconcileTimeout.Duration
}
typeToExtension[res.Type] = extension.Extension{
Extension: extensionsv1alpha1.Extension{
ObjectMeta: metav1.ObjectMeta{
Name: res.Type,
Namespace: namespace,
},
Spec: extensionsv1alpha1.ExtensionSpec{
DefaultSpec: extensionsv1alpha1.DefaultSpec{
Type: res.Type,
},
},
},
Timeout: timeout,
}
if res.GloballyEnabled != nil && *res.GloballyEnabled {
requiredExtensions[res.Type] = typeToExtension[res.Type]
}
}
}
// Extensions defined in Shoot resource.
for _, extension := range extensions {
if obj, ok := typeToExtension[extension.Type]; ok {
if utils.IsTrue(extension.Disabled) {
delete(requiredExtensions, extension.Type)
continue
}
obj.Spec.ProviderConfig = extension.ProviderConfig
requiredExtensions[extension.Type] = obj
continue
}
}
return requiredExtensions, nil
}