/
resource_quota_v.go
97 lines (79 loc) · 2.62 KB
/
resource_quota_v.go
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/*
Copyright 2021 KubeCube Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package quota
import (
"context"
"errors"
"net/http"
admissionv1 "k8s.io/api/admission/v1"
v1 "k8s.io/api/core/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
"github.com/kubecube-io/kubecube/pkg/clog"
"github.com/kubecube-io/kubecube/pkg/quota/k8s"
)
type ResourceQuotaValidator struct {
PivotClient client.Client
LocalClient client.Client
decoder *admission.Decoder
}
func NewValidator(pivotClient, localClient client.Client, decoder *admission.Decoder) *ResourceQuotaValidator {
return &ResourceQuotaValidator{
PivotClient: pivotClient,
LocalClient: localClient,
decoder: decoder,
}
}
func (r *ResourceQuotaValidator) Handle(ctx context.Context, req admission.Request) admission.Response {
oldQuota := &v1.ResourceQuota{}
currentQuota := &v1.ResourceQuota{}
defer func() {
clog.Debug("operation: %v, current quota: %+v, old quota: %+v", req.Operation, currentQuota, oldQuota)
}()
switch req.Operation {
case admissionv1.Create:
err := r.decoder.Decode(req, currentQuota)
if err != nil {
return admission.Errored(http.StatusBadRequest, err)
}
oldQuota = nil
case admissionv1.Update:
err := r.decoder.Decode(req, currentQuota)
if err != nil {
return admission.Errored(http.StatusBadRequest, err)
}
err = r.decoder.DecodeRaw(req.OldObject, oldQuota)
if err != nil {
return admission.Errored(http.StatusBadRequest, err)
}
case admissionv1.Delete:
err := r.decoder.DecodeRaw(req.OldObject, oldQuota)
if err != nil {
return admission.Errored(http.StatusBadRequest, err)
}
currentQuota = nil
}
q := k8s.NewQuotaOperator(r.PivotClient, r.LocalClient, currentQuota, oldQuota, context.Background())
if req.Operation != admissionv1.Delete {
isOverLoad, reason, err := q.Overload()
if err != nil {
return admission.Errored(http.StatusInternalServerError, err)
}
if isOverLoad {
clog.Warn(reason)
return admission.Errored(http.StatusNotAcceptable, errors.New(reason))
}
}
//go callback(q, req.Operation == admissionv1.Delete)
return admission.Allowed("")
}