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feat: grant global patch privileges and add patch handler
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| // Copyright 2020-2021 Clastix Labs | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| package namespace | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/client-go/tools/record" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/webhook/admission" | ||
|
|
||
| capsulev1beta1 "github.com/clastix/capsule/api/v1beta1" | ||
| capsulewebhook "github.com/clastix/capsule/pkg/webhook" | ||
| "github.com/clastix/capsule/pkg/webhook/utils" | ||
| ) | ||
|
|
||
| type patchHandler struct{} | ||
|
|
||
| func PatchHandler() capsulewebhook.Handler { | ||
| return &patchHandler{} | ||
| } | ||
|
|
||
| func (r *patchHandler) OnCreate(client.Client, *admission.Decoder, record.EventRecorder) capsulewebhook.Func { | ||
| return func(ctx context.Context, req admission.Request) *admission.Response { | ||
| return nil | ||
| } | ||
| } | ||
|
|
||
| func (r *patchHandler) OnDelete(client.Client, *admission.Decoder, record.EventRecorder) capsulewebhook.Func { | ||
| return func(ctx context.Context, req admission.Request) *admission.Response { | ||
| return nil | ||
| } | ||
| } | ||
|
|
||
| func (r *patchHandler) OnUpdate(c client.Client, decoder *admission.Decoder, recorder record.EventRecorder) capsulewebhook.Func { | ||
| return func(ctx context.Context, req admission.Request) *admission.Response { | ||
| // Decode Namespace | ||
| ns := &corev1.Namespace{} | ||
| if err := decoder.DecodeRaw(req.OldObject, ns); err != nil { | ||
| return utils.ErroredResponse(err) | ||
| } | ||
|
|
||
| // Get Tenant Label | ||
| ln, err := capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{}) | ||
| if err != nil { | ||
| response := admission.Errored(http.StatusBadRequest, err) | ||
|
|
||
| return &response | ||
| } | ||
|
|
||
| // Extract Tenant from namespace | ||
| e := fmt.Sprintf("namespace/%s can not be patched", ns.Name) | ||
|
|
||
| if label, ok := ns.ObjectMeta.Labels[ln]; ok { | ||
| // retrieving the selected Tenant | ||
| tnt := &capsulev1beta1.Tenant{} | ||
| if err = c.Get(ctx, types.NamespacedName{Name: label}, tnt); err != nil { | ||
| response := admission.Errored(http.StatusBadRequest, err) | ||
|
|
||
| return &response | ||
| } | ||
|
|
||
| if !utils.IsTenantOwner(tnt.Spec.Owners, req.UserInfo) { | ||
| recorder.Eventf(tnt, corev1.EventTypeWarning, "NamespacePatch", e) | ||
| response := admission.Denied(e) | ||
|
|
||
| return &response | ||
| } | ||
| } else { | ||
| recorder.Eventf(ns, corev1.EventTypeWarning, "NamespacePatch", e) | ||
| response := admission.Denied(e) | ||
|
|
||
| return &response | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
| } |