mirror of
https://github.com/projectcapsule/capsule.git
synced 2026-02-14 09:59:57 +00:00
72 lines
2.0 KiB
Go
72 lines
2.0 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 namespace_quota
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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/manager"
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"sigs.k8s.io/controller-runtime/pkg/webhook"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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"github.com/clastix/capsule/pkg/apis/capsule/v1alpha1"
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)
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func Add(mgr manager.Manager) error {
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mgr.GetWebhookServer().Register("/validate-v1-namespace-quota", &webhook.Admission{
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Handler: &nsQuota{},
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})
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return nil
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}
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type nsQuota struct {
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client client.Client
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decoder *admission.Decoder
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}
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func (r *nsQuota) Handle(ctx context.Context, req admission.Request) admission.Response {
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// Decoding the NS
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ns := &corev1.Namespace{}
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if err := r.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 _, or := range ns.ObjectMeta.OwnerReferences {
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// retrieving the selected Tenant
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t := &v1alpha1.Tenant{}
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if err := r.client.Get(ctx, types.NamespacedName{Name: or.Name}, t); err != nil {
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return admission.Errored(http.StatusBadRequest, err)
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}
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if t.IsFull() {
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return admission.Denied("Cannot exceed Namespace quota: please, reach out the system administrators")
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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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func (r *nsQuota) InjectDecoder(d *admission.Decoder) error {
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r.decoder = d
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return nil
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}
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func (r *nsQuota) InjectClient(c client.Client) error {
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r.client = c
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return nil
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}
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