forked from volcano-sh/volcano
/
mutate_queue.go
121 lines (100 loc) · 3 KB
/
mutate_queue.go
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/*
Copyright 2018 The Volcano 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 mutate
import (
"encoding/json"
"fmt"
"k8s.io/api/admission/v1beta1"
whv1beta1 "k8s.io/api/admissionregistration/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/klog"
schedulingv1alpha2 "volcano.sh/volcano/pkg/apis/scheduling/v1alpha2"
"volcano.sh/volcano/pkg/webhooks/router"
"volcano.sh/volcano/pkg/webhooks/schema"
"volcano.sh/volcano/pkg/webhooks/util"
)
func init() {
router.RegisterAdmission(service)
}
var service = &router.AdmissionService{
Path: "/queues/mutate",
Func: MutateQueues,
MutatingConfig: &whv1beta1.MutatingWebhookConfiguration{
Webhooks: []whv1beta1.Webhook{{
Name: "mutatequeue.volcano.sh",
Rules: []whv1beta1.RuleWithOperations{
{
Operations: []whv1beta1.OperationType{whv1beta1.Create},
Rule: whv1beta1.Rule{
APIGroups: []string{schedulingv1alpha2.SchemeGroupVersion.Group},
APIVersions: []string{schedulingv1alpha2.SchemeGroupVersion.Version},
Resources: []string{"queues"},
},
},
},
}},
},
}
type patchOperation struct {
Op string `json:"op"`
Path string `json:"path"`
Value interface{} `json:"value,omitempty"`
}
// MutateQueues mutate queues
func MutateQueues(ar v1beta1.AdmissionReview) *v1beta1.AdmissionResponse {
klog.V(3).Infof("Mutating %s queue %s.", ar.Request.Operation, ar.Request.Name)
queue, err := schema.DecodeQueue(ar.Request.Object, ar.Request.Resource)
if err != nil {
return util.ToAdmissionResponse(err)
}
var patchBytes []byte
switch ar.Request.Operation {
case v1beta1.Create:
patchBytes, err = createQueuePatch(queue)
break
default:
return util.ToAdmissionResponse(fmt.Errorf("invalid operation `%s`, "+
"expect operation to be `CREATE`", ar.Request.Operation))
}
if err != nil {
return &v1beta1.AdmissionResponse{
Allowed: false,
Result: &metav1.Status{Message: err.Error()},
}
}
pt := v1beta1.PatchTypeJSONPatch
return &v1beta1.AdmissionResponse{
Allowed: true,
Patch: patchBytes,
PatchType: &pt,
}
}
func createQueuePatch(queue *schedulingv1alpha2.Queue) ([]byte, error) {
var patch []patchOperation
if len(queue.Spec.State) == 0 {
patch = append(patch, patchOperation{
Op: "add",
Path: "/spec/state",
Value: schedulingv1alpha2.QueueStateOpen,
})
}
trueValue := true
if queue.Spec.Reclaimable == nil {
patch = append(patch, patchOperation{
Op: "add",
Path: "/spec/reclaimable",
Value: &trueValue,
})
}
return json.Marshal(patch)
}