mirror of https://github.com/k3s-io/k3s
130 lines
4.0 KiB
Go
130 lines
4.0 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 etcd
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import (
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"fmt"
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"path"
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"k8s.io/kubernetes/pkg/api"
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apierrors "k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/registry/generic"
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etcdgeneric "k8s.io/kubernetes/pkg/registry/generic/etcd"
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"k8s.io/kubernetes/pkg/registry/namespace"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/storage"
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"k8s.io/kubernetes/pkg/util"
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)
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// rest implements a RESTStorage for namespaces against etcd
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type REST struct {
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*etcdgeneric.Etcd
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status *etcdgeneric.Etcd
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}
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// StatusREST implements the REST endpoint for changing the status of a namespace.
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type StatusREST struct {
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store *etcdgeneric.Etcd
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}
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// FinalizeREST implements the REST endpoint for finalizing a namespace.
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type FinalizeREST struct {
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store *etcdgeneric.Etcd
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}
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// NewREST returns a RESTStorage object that will work against namespaces.
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func NewREST(s storage.Interface) (*REST, *StatusREST, *FinalizeREST) {
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prefix := "/namespaces"
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store := &etcdgeneric.Etcd{
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NewFunc: func() runtime.Object { return &api.Namespace{} },
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NewListFunc: func() runtime.Object { return &api.NamespaceList{} },
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KeyRootFunc: func(ctx api.Context) string {
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return prefix
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},
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KeyFunc: func(ctx api.Context, name string) (string, error) {
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return path.Join(prefix, name), nil
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},
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ObjectNameFunc: func(obj runtime.Object) (string, error) {
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return obj.(*api.Namespace).Name, nil
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},
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PredicateFunc: func(label labels.Selector, field fields.Selector) generic.Matcher {
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return namespace.MatchNamespace(label, field)
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},
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EndpointName: "namespaces",
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CreateStrategy: namespace.Strategy,
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UpdateStrategy: namespace.Strategy,
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ReturnDeletedObject: true,
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Storage: s,
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}
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statusStore := *store
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statusStore.UpdateStrategy = namespace.StatusStrategy
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finalizeStore := *store
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finalizeStore.UpdateStrategy = namespace.FinalizeStrategy
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return &REST{Etcd: store, status: &statusStore}, &StatusREST{store: &statusStore}, &FinalizeREST{store: &finalizeStore}
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}
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// Delete enforces life-cycle rules for namespace termination
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func (r *REST) Delete(ctx api.Context, name string, options *api.DeleteOptions) (runtime.Object, error) {
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nsObj, err := r.Get(ctx, name)
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if err != nil {
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return nil, err
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}
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namespace := nsObj.(*api.Namespace)
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// upon first request to delete, we switch the phase to start namespace termination
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if namespace.DeletionTimestamp.IsZero() {
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now := util.Now()
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namespace.DeletionTimestamp = &now
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namespace.Status.Phase = api.NamespaceTerminating
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result, _, err := r.status.Update(ctx, namespace)
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return result, err
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}
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// prior to final deletion, we must ensure that finalizers is empty
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if len(namespace.Spec.Finalizers) != 0 {
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err = apierrors.NewConflict("Namespace", namespace.Name, fmt.Errorf("The system is ensuring all content is removed from this namespace. Upon completion, this namespace will automatically be purged by the system."))
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return nil, err
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}
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return r.Etcd.Delete(ctx, name, nil)
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}
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func (r *StatusREST) New() runtime.Object {
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return r.store.New()
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}
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// Update alters the status subset of an object.
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func (r *StatusREST) Update(ctx api.Context, obj runtime.Object) (runtime.Object, bool, error) {
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return r.store.Update(ctx, obj)
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}
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func (r *FinalizeREST) New() runtime.Object {
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return r.store.New()
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}
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// Update alters the status finalizers subset of an object.
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func (r *FinalizeREST) Update(ctx api.Context, obj runtime.Object) (runtime.Object, bool, error) {
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return r.store.Update(ctx, obj)
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}
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