82 lines
2.8 KiB
Go
82 lines
2.8 KiB
Go
/*
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Copyright 2021 The Karmada Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package clusterpropagationpolicy
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import (
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"context"
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"fmt"
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"net/http"
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admissionv1 "k8s.io/api/admission/v1"
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"k8s.io/klog/v2"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
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"github.com/karmada-io/karmada/pkg/util/validation"
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)
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// ValidatingAdmission validates ClusterPropagationPolicy object when creating/updating/deleting.
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type ValidatingAdmission struct {
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Decoder admission.Decoder
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}
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// Check if our ValidatingAdmission implements necessary interface
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var _ admission.Handler = &ValidatingAdmission{}
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// Handle implements admission.Handler interface.
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// It yields a response to an AdmissionRequest.
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func (v *ValidatingAdmission) Handle(_ context.Context, req admission.Request) admission.Response {
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policy := &policyv1alpha1.ClusterPropagationPolicy{}
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err := v.Decoder.Decode(req, policy)
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if err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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klog.V(2).Infof("Validating ClusterPropagationPolicy(%s) for request: %s", policy.Name, req.Operation)
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if req.Operation == admissionv1.Update {
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oldPolicy := &policyv1alpha1.ClusterPropagationPolicy{}
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err = v.Decoder.DecodeRaw(req.OldObject, oldPolicy)
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if err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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if policy.Spec.SchedulerName != oldPolicy.Spec.SchedulerName {
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err = fmt.Errorf("the schedulerName should not be updated")
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klog.Error(err)
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return admission.Denied(err.Error())
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}
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if policy.Labels[policyv1alpha1.ClusterPropagationPolicyPermanentIDLabel] !=
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oldPolicy.Labels[policyv1alpha1.ClusterPropagationPolicyPermanentIDLabel] {
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return admission.Denied(fmt.Sprintf("label %s is immutable, it can only be set by the system during creation",
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policyv1alpha1.ClusterPropagationPolicyPermanentIDLabel))
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}
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}
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if _, exist := policy.Labels[policyv1alpha1.ClusterPropagationPolicyPermanentIDLabel]; !exist {
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return admission.Denied(fmt.Sprintf("label %s is required, it should be set by the mutating admission webhook during creation",
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policyv1alpha1.ClusterPropagationPolicyPermanentIDLabel))
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}
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errs := validation.ValidatePropagationSpec(policy.Spec)
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if len(errs) != 0 {
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klog.Error(errs)
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return admission.Denied(errs.ToAggregate().Error())
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}
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return admission.Allowed("")
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}
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