mirror of
https://github.com/projectcapsule/capsule.git
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101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
// Copyright 2020-2023 Project Capsule Authors.
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// SPDX-License-Identifier: Apache-2.0
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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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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/client-go/tools/record"
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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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capsulewebhook "github.com/projectcapsule/capsule/pkg/webhook"
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"github.com/projectcapsule/capsule/pkg/webhook/utils"
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)
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type validating struct{}
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func Validating() capsulewebhook.Handler {
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return &validating{}
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}
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func (h *validating) OnCreate(c client.Client, decoder *admission.Decoder, recorder record.EventRecorder) capsulewebhook.Func {
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return func(ctx context.Context, req admission.Request) *admission.Response {
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pvc := &corev1.PersistentVolumeClaim{}
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if err := decoder.Decode(req, pvc); err != nil {
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return utils.ErroredResponse(err)
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}
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tnt, err := utils.TenantByStatusNamespace(ctx, c, pvc.Namespace)
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if err != nil {
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return utils.ErroredResponse(err)
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}
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if tnt == nil {
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return nil
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}
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allowed := tnt.Spec.StorageClasses
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if allowed == nil {
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return nil
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}
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storageClass := pvc.Spec.StorageClassName
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if storageClass == nil {
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recorder.Eventf(tnt, corev1.EventTypeWarning, "MissingStorageClass", "PersistentVolumeClaim %s/%s is missing StorageClass", req.Namespace, req.Name)
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response := admission.Denied(NewStorageClassNotValid(*tnt.Spec.StorageClasses).Error())
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return &response
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}
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selector := false
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// Verify if the StorageClass exists and matches the label selector/expression
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if len(allowed.MatchExpressions) > 0 || len(allowed.MatchLabels) > 0 {
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storageClassObj, err := utils.GetStorageClassByName(ctx, c, *storageClass)
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if err != nil && !errors.IsNotFound(err) {
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response := admission.Errored(http.StatusInternalServerError, err)
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return &response
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}
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// Storage Class is present, check if it matches the selector
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if storageClassObj != nil {
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selector = allowed.SelectorMatch(storageClassObj)
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}
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}
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switch {
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case allowed.MatchDefault(*storageClass):
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return nil
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case allowed.Match(*storageClass) || selector:
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return nil
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default:
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recorder.Eventf(tnt, corev1.EventTypeWarning, "ForbiddenStorageClass", "PersistentVolumeClaim %s/%s StorageClass %s is forbidden for the current Tenant", req.Namespace, req.Name, *storageClass)
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response := admission.Denied(NewStorageClassForbidden(*pvc.Spec.StorageClassName, *tnt.Spec.StorageClasses).Error())
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return &response
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}
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}
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}
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func (h *validating) OnDelete(client.Client, *admission.Decoder, record.EventRecorder) capsulewebhook.Func {
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return func(ctx context.Context, req admission.Request) *admission.Response {
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return nil
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}
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}
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func (h *validating) OnUpdate(client.Client, *admission.Decoder, record.EventRecorder) capsulewebhook.Func {
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return func(ctx context.Context, req admission.Request) *admission.Response {
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return nil
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}
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}
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