mirror of
https://github.com/projectcapsule/capsule.git
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96 lines
2.8 KiB
Go
96 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 namespacequota
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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/types"
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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=/validate-v1-namespace-quota,mutating=false,sideEffects=None,admissionReviewVersions=v1,failurePolicy=fail,groups="",resources=namespaces,verbs=create,versions=v1,name=quota.namespace.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{
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handler: handler,
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}
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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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func (w *webhook) GetName() string {
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return "NamespaceQuota"
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}
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func (w *webhook) GetPath() string {
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return "/validate-v1-namespace-quota"
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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 (r *handler) OnCreate(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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ns := &corev1.Namespace{}
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if err := decoder.Decode(req, ns); err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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for _, objectRef := range ns.ObjectMeta.OwnerReferences {
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// retrieving the selected Tenant
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tnt := &capsulev1alpha1.Tenant{}
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if err := client.Get(ctx, types.NamespacedName{Name: objectRef.Name}, tnt); err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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if tnt.IsFull() {
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return admission.Denied(NewNamespaceQuotaExceededError().Error())
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}
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}
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// creating NS that is not bounded to any Tenant
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return admission.Allowed("")
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}
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}
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func (r *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 (r *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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