82bcdd3b3b
Allows us to define different watch versioning regimes in the future as well as to encode information with the resource version. This changes /watch/resources?resourceVersion=3 to start the watch at 4 instead of 3, which means clients can read a resource version and then send it back to the server. Clients should no longer do math on resource versions.
105 lines
3.3 KiB
Go
105 lines
3.3 KiB
Go
/*
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Copyright 2014 Google Inc. 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 endpoint
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import (
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"errors"
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"fmt"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/apiserver"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
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)
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// REST adapts endpoints into apiserver's RESTStorage model.
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type REST struct {
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registry Registry
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}
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// NewREST returns a new apiserver.RESTStorage implementation for endpoints
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func NewREST(registry Registry) *REST {
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return &REST{
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registry: registry,
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}
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}
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// Get satisfies the RESTStorage interface.
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func (rs *REST) Get(ctx api.Context, id string) (runtime.Object, error) {
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return rs.registry.GetEndpoints(ctx, id)
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}
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// List satisfies the RESTStorage interface.
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func (rs *REST) List(ctx api.Context, label, field labels.Selector) (runtime.Object, error) {
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if !label.Empty() || !field.Empty() {
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return nil, errors.New("label/field selectors are not supported on endpoints")
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}
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return rs.registry.ListEndpoints(ctx)
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}
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// Watch returns Endpoint events via a watch.Interface.
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// It implements apiserver.ResourceWatcher.
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func (rs *REST) Watch(ctx api.Context, label, field labels.Selector, resourceVersion string) (watch.Interface, error) {
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return rs.registry.WatchEndpoints(ctx, label, field, resourceVersion)
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}
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// Create satisfies the RESTStorage interface.
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func (rs *REST) Create(ctx api.Context, obj runtime.Object) (<-chan runtime.Object, error) {
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endpoints, ok := obj.(*api.Endpoints)
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if !ok {
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return nil, fmt.Errorf("not an endpoints: %#v", obj)
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}
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if len(endpoints.ID) == 0 {
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return nil, fmt.Errorf("id is required: %#v", obj)
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}
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endpoints.CreationTimestamp = util.Now()
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return apiserver.MakeAsync(func() (runtime.Object, error) {
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err := rs.registry.UpdateEndpoints(ctx, endpoints)
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if err != nil {
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return nil, err
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}
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return rs.registry.GetEndpoints(ctx, endpoints.ID)
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}), nil
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}
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// Update satisfies the RESTStorage interface.
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func (rs *REST) Update(ctx api.Context, obj runtime.Object) (<-chan runtime.Object, error) {
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endpoints, ok := obj.(*api.Endpoints)
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if !ok {
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return nil, fmt.Errorf("not an endpoints: %#v", obj)
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}
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return apiserver.MakeAsync(func() (runtime.Object, error) {
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err := rs.registry.UpdateEndpoints(ctx, endpoints)
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if err != nil {
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return nil, err
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}
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return rs.registry.GetEndpoints(ctx, endpoints.ID)
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}), nil
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}
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// Delete satisfies the RESTStorage interface but is unimplemented.
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func (rs *REST) Delete(ctx api.Context, id string) (<-chan runtime.Object, error) {
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return nil, errors.New("unimplemented")
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}
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// New implements the RESTStorage interface.
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func (rs REST) New() runtime.Object {
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return &api.Endpoints{}
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}
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