mirror of https://github.com/k3s-io/k3s
81 lines
2.7 KiB
Go
81 lines
2.7 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 binding
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import (
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"fmt"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/errors"
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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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)
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// REST implements the RESTStorage interface for bindings. When bindings are written, it
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// changes the location of the affected pods. This information is eventually reflected
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// in the pod's CurrentState.Host field.
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type REST struct {
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registry Registry
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}
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// NewREST creates a new REST backed by the given bindingRegistry.
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func NewREST(bindingRegistry Registry) *REST {
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return &REST{
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registry: bindingRegistry,
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}
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}
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// List returns an error because bindings are write-only objects.
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func (*REST) List(ctx api.Context, label, field labels.Selector) (runtime.Object, error) {
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return nil, errors.NewNotFound("binding", "list")
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}
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// Get returns an error because bindings are write-only objects.
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func (*REST) Get(ctx api.Context, id string) (runtime.Object, error) {
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return nil, errors.NewNotFound("binding", id)
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}
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// Delete returns an error because bindings are write-only objects.
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func (*REST) Delete(ctx api.Context, id string) (<-chan apiserver.RESTResult, error) {
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return nil, errors.NewNotFound("binding", id)
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}
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// New returns a new binding object fit for having data unmarshalled into it.
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func (*REST) New() runtime.Object {
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return &api.Binding{}
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}
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// Create attempts to make the assignment indicated by the binding it recieves.
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func (b *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
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binding, ok := obj.(*api.Binding)
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if !ok {
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return nil, fmt.Errorf("incorrect type: %#v", obj)
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}
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return apiserver.MakeAsync(func() (runtime.Object, error) {
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if err := b.registry.ApplyBinding(ctx, binding); err != nil {
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return nil, err
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}
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return &api.Status{Status: api.StatusSuccess}, nil
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}), nil
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}
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// Update returns an error-- this object may not be updated.
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func (b *REST) Update(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
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return nil, fmt.Errorf("Bindings may not be changed.")
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}
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