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shoot.go
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shoot.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 validator
import (
"context"
"fmt"
extensionswebhook "github.com/gardener/gardener/extensions/pkg/webhook"
"github.com/gardener/gardener/pkg/apis/core"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/util/validation/field"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/gerrit91/gardener-extension-registry-cache/pkg/apis/registry/validation"
"github.com/gerrit91/gardener-extension-registry-cache/pkg/controller"
)
// shoot validates shoots
type shoot struct {
client client.Client
decoder runtime.Decoder
}
// NewShootValidator returns a new instance of a shoot validator.
func NewShootValidator() extensionswebhook.Validator {
return &shoot{}
}
// InjectScheme injects the given scheme into the validator.
func (s *shoot) InjectScheme(scheme *runtime.Scheme) error {
s.decoder = serializer.NewCodecFactory(scheme, serializer.EnableStrict).UniversalDecoder()
return nil
}
// InjectClient injects the given client into the validator.
func (s *shoot) InjectClient(client client.Client) error {
s.client = client
return nil
}
// Validate validates the given shoot object
func (s *shoot) Validate(ctx context.Context, new, old client.Object) error {
shoot, ok := new.(*core.Shoot)
if !ok {
return fmt.Errorf("wrong object type %T", new)
}
var ext *core.Extension
var fldPath *field.Path
for i, ex := range shoot.Spec.Extensions {
if ex.Type == controller.Type {
ext = ex.DeepCopy()
fldPath = field.NewPath("spec", "extensions").Index(i)
break
}
}
if ext == nil {
return nil
}
for _, worker := range shoot.Spec.Provider.Workers {
if worker.CRI.Name != "containerd" {
return fmt.Errorf("Containerruntime needs to be containerd when container registry cache is used")
}
}
providerConfigPath := fldPath.Child("providerConfig")
registryConfig, err := decodeRegistryConfig(s.decoder, ext.ProviderConfig, providerConfigPath)
if err != nil {
return err
}
return validation.ValidateRegistryConfig(registryConfig, providerConfigPath).ToAggregate()
}