代码拉取完成,页面将自动刷新
/*
Copyright 2014 The Kubernetes Authors All rights reserved.
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 autoprovision
import (
"io"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/client/cache"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/watch"
)
func init() {
admission.RegisterPlugin("NamespaceAutoProvision", func(client clientset.Interface, config io.Reader) (admission.Interface, error) {
return NewProvision(client), nil
})
}
// provision is an implementation of admission.Interface.
// It looks at all incoming requests in a namespace context, and if the namespace does not exist, it creates one.
// It is useful in deployments that do not want to restrict creation of a namespace prior to its usage.
type provision struct {
*admission.Handler
client clientset.Interface
store cache.Store
}
func (p *provision) Admit(a admission.Attributes) (err error) {
// if we're here, then we've already passed authentication, so we're allowed to do what we're trying to do
// if we're here, then the API server has found a route, which means that if we have a non-empty namespace
// its a namespaced resource.
if len(a.GetNamespace()) == 0 || a.GetKind().GroupKind() == api.Kind("Namespace") {
return nil
}
namespace := &api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: a.GetNamespace(),
Namespace: "",
},
Status: api.NamespaceStatus{},
}
_, exists, err := p.store.Get(namespace)
if err != nil {
return admission.NewForbidden(a, err)
}
if exists {
return nil
}
_, err = p.client.Core().Namespaces().Create(namespace)
if err != nil && !errors.IsAlreadyExists(err) {
return admission.NewForbidden(a, err)
}
return nil
}
// NewProvision creates a new namespace provision admission control handler
func NewProvision(c clientset.Interface) admission.Interface {
store := cache.NewStore(cache.MetaNamespaceKeyFunc)
reflector := cache.NewReflector(
&cache.ListWatch{
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
return c.Core().Namespaces().List(options)
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return c.Core().Namespaces().Watch(options)
},
},
&api.Namespace{},
store,
0,
)
reflector.Run()
return createProvision(c, store)
}
func createProvision(c clientset.Interface, store cache.Store) admission.Interface {
return &provision{
Handler: admission.NewHandler(admission.Create),
client: c,
store: store,
}
}
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。