mirror of
https://github.com/projectcapsule/capsule.git
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a4b0c0fe27
* Using HTTP handlers as closures * Avoiding variable shadowing * Optimizing Ingress webhook * Missing license header
100 lines
2.8 KiB
Go
100 lines
2.8 KiB
Go
/*
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Copyright 2020 Clastix Labs.
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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 pvc
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import (
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"context"
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"net/http"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/fields"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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capsulev1alpha1 "github.com/clastix/capsule/api/v1alpha1"
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capsulewebhook "github.com/clastix/capsule/pkg/webhook"
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)
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// +kubebuilder:webhook:path=/validating-v1-pvc,mutating=false,failurePolicy=fail,groups="",resources=persistentvolumeclaims,verbs=create,versions=v1,name=pvc.capsule.clastix.io
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type webhook struct {
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handler capsulewebhook.Handler
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}
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func Webhook(handler capsulewebhook.Handler) capsulewebhook.Webhook {
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return &webhook{handler: handler}
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}
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func (w webhook) GetName() string {
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return "Pvc"
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}
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func (w webhook) GetPath() string {
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return "/validating-v1-pvc"
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}
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func (w webhook) GetHandler() capsulewebhook.Handler {
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return w.handler
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}
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type handler struct {
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}
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func Handler() capsulewebhook.Handler {
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return &handler{}
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}
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func (h *handler) OnCreate(c client.Client, decoder *admission.Decoder) capsulewebhook.Func {
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return func(ctx context.Context, req admission.Request) admission.Response {
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pvc := &v1.PersistentVolumeClaim{}
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if err := decoder.Decode(req, pvc); err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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if pvc.Spec.StorageClassName == nil {
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return admission.Errored(http.StatusBadRequest, NewValidStorageClassError())
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}
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sc := *pvc.Spec.StorageClassName
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tl := &capsulev1alpha1.TenantList{}
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if err := c.List(ctx, tl, client.MatchingFieldsSelector{
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Selector: fields.OneTermEqualSelector(".status.namespaces", pvc.Namespace),
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}); err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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if !tl.Items[0].Spec.StorageClasses.IsStringInList(sc) {
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return admission.Errored(http.StatusBadRequest, NewForbiddenStorageClassError(*pvc.Spec.StorageClassName))
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}
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return admission.Allowed("")
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}
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}
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func (h *handler) OnDelete(client client.Client, decoder *admission.Decoder) capsulewebhook.Func {
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return func(ctx context.Context, req admission.Request) admission.Response {
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return admission.Allowed("")
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}
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}
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func (h *handler) OnUpdate(client client.Client, decoder *admission.Decoder) capsulewebhook.Func {
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return func(ctx context.Context, req admission.Request) admission.Response {
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return admission.Allowed("")
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}
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}
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