Merge pull request #12344 from jszczepkowski/hpa-api
Added HorizontalPodAutoscaler object to experimental API.
This commit is contained in:
Wojciech Tyczynski
17
pkg/registry/horizontalpodautoscaler/doc.go
Normal file
17
pkg/registry/horizontalpodautoscaler/doc.go
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@@ -0,0 +1,17 @@
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/*
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Copyright 2014 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.
|
||||
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.
|
||||
*/
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package horizontalpodautoscaler
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73
pkg/registry/horizontalpodautoscaler/etcd/etcd.go
Normal file
73
pkg/registry/horizontalpodautoscaler/etcd/etcd.go
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@@ -0,0 +1,73 @@
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/*
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Copyright 2014 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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|
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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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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/expapi"
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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/horizontalpodautoscaler"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/storage"
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)
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// rest implements a RESTStorage for horizontal pod autoscalers against etcd
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type REST struct {
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*etcdgeneric.Etcd
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}
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// NewREST returns a RESTStorage object that will work against horizontal pod autoscalers.
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func NewREST(s storage.Interface) *REST {
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var prefix = "/horizontalpodautoscalers"
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store := &etcdgeneric.Etcd{
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NewFunc: func() runtime.Object { return &expapi.HorizontalPodAutoscaler{} },
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// NewListFunc returns an object capable of storing results of an etcd list.
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NewListFunc: func() runtime.Object { return &expapi.HorizontalPodAutoscalerList{} },
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// Produces a path that etcd understands, to the root of the resource
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// by combining the namespace in the context with the given prefix
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KeyRootFunc: func(ctx api.Context) string {
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return etcdgeneric.NamespaceKeyRootFunc(ctx, prefix)
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},
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// Produces a path that etcd understands, to the resource by combining
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// the namespace in the context with the given prefix
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KeyFunc: func(ctx api.Context, name string) (string, error) {
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return etcdgeneric.NamespaceKeyFunc(ctx, prefix, name)
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},
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// Retrieve the name field of an autoscaler
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ObjectNameFunc: func(obj runtime.Object) (string, error) {
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return obj.(*expapi.HorizontalPodAutoscaler).Name, nil
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},
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// Used to match objects based on labels/fields for list
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PredicateFunc: func(label labels.Selector, field fields.Selector) generic.Matcher {
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return horizontalpodautoscaler.MatchAutoscaler(label, field)
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},
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EndpointName: "horizontalPodAutoscalers",
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// Used to validate autoscaler creation
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CreateStrategy: horizontalpodautoscaler.Strategy,
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// Used to validate autoscaler updates
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UpdateStrategy: horizontalpodautoscaler.Strategy,
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Storage: s,
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}
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return &REST{store}
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}
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231
pkg/registry/horizontalpodautoscaler/etcd/etcd_test.go
Normal file
231
pkg/registry/horizontalpodautoscaler/etcd/etcd_test.go
Normal file
@@ -0,0 +1,231 @@
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/*
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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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|
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http://www.apache.org/licenses/LICENSE-2.0
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|
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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,
|
||||
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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"testing"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/api/rest/resttest"
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"k8s.io/kubernetes/pkg/api/testapi"
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"k8s.io/kubernetes/pkg/expapi"
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"k8s.io/kubernetes/pkg/expapi/v1"
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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/runtime"
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"k8s.io/kubernetes/pkg/storage"
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etcdstorage "k8s.io/kubernetes/pkg/storage/etcd"
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"k8s.io/kubernetes/pkg/tools"
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"k8s.io/kubernetes/pkg/tools/etcdtest"
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"github.com/coreos/go-etcd/etcd"
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)
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var scheme *runtime.Scheme
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var codec runtime.Codec
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func init() {
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// Ensure that expapi/v1 packege is used, so that it will get initialized and register HorizontalPodAutoscaler object.
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dummy := v1.HorizontalPodAutoscaler{}
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dummy.Spec = v1.HorizontalPodAutoscalerSpec{}
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}
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func newStorage(t *testing.T) (*REST, *tools.FakeEtcdClient, storage.Interface) {
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fakeEtcdClient := tools.NewFakeEtcdClient(t)
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fakeEtcdClient.TestIndex = true
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etcdStorage := etcdstorage.NewEtcdStorage(fakeEtcdClient, testapi.Codec(), etcdtest.PathPrefix())
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storage := NewREST(etcdStorage)
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return storage, fakeEtcdClient, etcdStorage
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}
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func validNewHorizontalPodAutoscaler(name string) *expapi.HorizontalPodAutoscaler {
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return &expapi.HorizontalPodAutoscaler{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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Namespace: api.NamespaceDefault,
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},
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Spec: expapi.HorizontalPodAutoscalerSpec{
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ScaleRef: &expapi.SubresourceReference{
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Subresource: "scale",
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},
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MinCount: 1,
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MaxCount: 5,
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Target: expapi.TargetConsumption{api.ResourceCPU, resource.MustParse("0.8")},
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},
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}
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}
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func TestCreate(t *testing.T) {
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storage, fakeEtcdClient, _ := newStorage(t)
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test := resttest.New(t, storage, fakeEtcdClient.SetError)
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autoscaler := validNewHorizontalPodAutoscaler("foo")
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autoscaler.ObjectMeta = api.ObjectMeta{}
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test.TestCreate(
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// valid
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autoscaler,
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// invalid
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&expapi.HorizontalPodAutoscaler{},
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)
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}
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func TestUpdate(t *testing.T) {
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storage, fakeEtcdClient, _ := newStorage(t)
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test := resttest.New(t, storage, fakeEtcdClient.SetError)
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key, err := storage.KeyFunc(test.TestContext(), "foo")
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if err != nil {
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t.Fatal(err)
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}
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key = etcdtest.AddPrefix(key)
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fakeEtcdClient.ExpectNotFoundGet(key)
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fakeEtcdClient.ChangeIndex = 2
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autoscaler := validNewHorizontalPodAutoscaler("foo")
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existing := validNewHorizontalPodAutoscaler("exists")
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existing.Namespace = test.TestNamespace()
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obj, err := storage.Create(test.TestContext(), existing)
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if err != nil {
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t.Fatalf("unable to create object: %v", err)
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}
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older := obj.(*expapi.HorizontalPodAutoscaler)
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older.ResourceVersion = "1"
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test.TestUpdate(
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autoscaler,
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existing,
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older,
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)
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}
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func TestDelete(t *testing.T) {
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ctx := api.NewDefaultContext()
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storage, fakeEtcdClient, _ := newStorage(t)
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test := resttest.New(t, storage, fakeEtcdClient.SetError)
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autoscaler := validNewHorizontalPodAutoscaler("foo2")
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key, _ := storage.KeyFunc(ctx, "foo2")
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key = etcdtest.AddPrefix(key)
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createFn := func() runtime.Object {
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fakeEtcdClient.Data[key] = tools.EtcdResponseWithError{
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R: &etcd.Response{
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Node: &etcd.Node{
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Value: runtime.EncodeOrDie(testapi.Codec(), autoscaler),
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ModifiedIndex: 1,
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},
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},
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}
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return autoscaler
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}
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gracefulSetFn := func() bool {
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if fakeEtcdClient.Data[key].R.Node == nil {
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return false
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}
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return fakeEtcdClient.Data[key].R.Node.TTL == 30
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}
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test.TestDeleteNoGraceful(createFn, gracefulSetFn)
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}
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func TestEtcdGet(t *testing.T) {
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ctx := api.NewDefaultContext()
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registry, fakeClient, _ := newStorage(t)
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autoscaler := validNewHorizontalPodAutoscaler("foo3")
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name := autoscaler.Name
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key, _ := registry.KeyFunc(ctx, name)
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key = etcdtest.AddPrefix(key)
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fakeClient.Set(key, runtime.EncodeOrDie(testapi.Codec(), autoscaler), 0)
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response, err := fakeClient.Get(key, false, false)
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if err != nil {
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t.Fatalf("Unexpected error %v", err)
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}
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var autoscalerOut expapi.HorizontalPodAutoscaler
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err = testapi.Codec().DecodeInto([]byte(response.Node.Value), &autoscalerOut)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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obj, err := registry.Get(ctx, name)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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got := obj.(*expapi.HorizontalPodAutoscaler)
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autoscaler.ObjectMeta.ResourceVersion = got.ObjectMeta.ResourceVersion
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if e, a := autoscaler, got; !api.Semantic.DeepEqual(*e, *a) {
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t.Errorf("Unexpected autoscaler: %#v, expected %#v", e, a)
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}
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}
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func TestEmptyList(t *testing.T) {
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ctx := api.NewDefaultContext()
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registry, fakeClient, _ := newStorage(t)
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fakeClient.ChangeIndex = 1
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key := registry.KeyRootFunc(ctx)
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key = etcdtest.AddPrefix(key)
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fakeClient.Data[key] = tools.EtcdResponseWithError{
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R: &etcd.Response{},
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E: fakeClient.NewError(tools.EtcdErrorCodeNotFound),
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}
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autoscalerList, err := registry.List(ctx, labels.Everything(), fields.Everything())
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if len(autoscalerList.(*expapi.HorizontalPodAutoscalerList).Items) != 0 {
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t.Errorf("Unexpected non-zero autoscaler list: %#v", autoscalerList)
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}
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if autoscalerList.(*expapi.HorizontalPodAutoscalerList).ResourceVersion != "1" {
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t.Errorf("Unexpected resource version: %#v", autoscalerList)
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}
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}
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func TestList(t *testing.T) {
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ctx := api.NewDefaultContext()
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registry, fakeClient, _ := newStorage(t)
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fakeClient.ChangeIndex = 1
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key := registry.KeyRootFunc(ctx)
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key = etcdtest.AddPrefix(key)
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fakeClient.Data[key] = tools.EtcdResponseWithError{
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R: &etcd.Response{
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Node: &etcd.Node{
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Nodes: []*etcd.Node{
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{
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Value: runtime.EncodeOrDie(testapi.Codec(), &expapi.HorizontalPodAutoscaler{
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ObjectMeta: api.ObjectMeta{Name: "foo"},
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}),
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},
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{
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Value: runtime.EncodeOrDie(testapi.Codec(), &expapi.HorizontalPodAutoscaler{
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ObjectMeta: api.ObjectMeta{Name: "bar"},
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}),
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},
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},
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},
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},
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}
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obj, err := registry.List(ctx, labels.Everything(), fields.Everything())
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if err != nil {
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t.Fatalf("Unexpected error %v", err)
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}
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autoscalerList := obj.(*expapi.HorizontalPodAutoscalerList)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if len(autoscalerList.Items) != 2 {
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t.Errorf("Unexpected HorizontalPodAutoscaler list: %#v", autoscalerList)
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}
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if autoscalerList.Items[0].Name != "foo" {
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t.Errorf("Unexpected HorizontalPodAutoscaler: %#v", autoscalerList.Items[0])
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}
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if autoscalerList.Items[1].Name != "bar" {
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t.Errorf("Unexpected HorizontalPodAutoscaler: %#v", autoscalerList.Items[1])
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}
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}
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80
pkg/registry/horizontalpodautoscaler/registry.go
Normal file
80
pkg/registry/horizontalpodautoscaler/registry.go
Normal file
@@ -0,0 +1,80 @@
|
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/*
|
||||
Copyright 2015 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 horizontalpodautoscaler
|
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|
||||
import (
|
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"k8s.io/kubernetes/pkg/api"
|
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"k8s.io/kubernetes/pkg/api/rest"
|
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"k8s.io/kubernetes/pkg/expapi"
|
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"k8s.io/kubernetes/pkg/fields"
|
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"k8s.io/kubernetes/pkg/labels"
|
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)
|
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|
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// Registry is an interface implemented by things that know how to store HorizontalPodAutoscaler objects.
|
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type Registry interface {
|
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// ListPersistentVolumes obtains a list of autoscalers having labels which match selector.
|
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ListHorizontalPodAutoscaler(ctx api.Context, selector labels.Selector) (*expapi.HorizontalPodAutoscalerList, error)
|
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// Get a specific autoscaler
|
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GetHorizontalPodAutoscaler(ctx api.Context, autoscalerID string) (*expapi.HorizontalPodAutoscaler, error)
|
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// Create an autoscaler based on a specification.
|
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CreateHorizontalPodAutoscaler(ctx api.Context, autoscaler *expapi.HorizontalPodAutoscaler) error
|
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// Update an existing autoscaler
|
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UpdateHorizontalPodAutoscaler(ctx api.Context, autoscaler *expapi.HorizontalPodAutoscaler) error
|
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// Delete an existing autoscaler
|
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DeleteHorizontalPodAutoscaler(ctx api.Context, autoscalerID string) error
|
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}
|
||||
|
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// storage puts strong typing around storage calls
|
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type storage struct {
|
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rest.StandardStorage
|
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}
|
||||
|
||||
// NewREST returns a new Registry interface for the given Storage. Any mismatched types will panic.
|
||||
func NewRegistry(s rest.StandardStorage) Registry {
|
||||
return &storage{s}
|
||||
}
|
||||
|
||||
func (s *storage) ListHorizontalPodAutoscaler(ctx api.Context, label labels.Selector) (*expapi.HorizontalPodAutoscalerList, error) {
|
||||
obj, err := s.List(ctx, label, fields.Everything())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return obj.(*expapi.HorizontalPodAutoscalerList), nil
|
||||
}
|
||||
|
||||
func (s *storage) GetHorizontalPodAutoscaler(ctx api.Context, autoscalerID string) (*expapi.HorizontalPodAutoscaler, error) {
|
||||
obj, err := s.Get(ctx, autoscalerID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return obj.(*expapi.HorizontalPodAutoscaler), nil
|
||||
}
|
||||
|
||||
func (s *storage) CreateHorizontalPodAutoscaler(ctx api.Context, autoscaler *expapi.HorizontalPodAutoscaler) error {
|
||||
_, err := s.Create(ctx, autoscaler)
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *storage) UpdateHorizontalPodAutoscaler(ctx api.Context, autoscaler *expapi.HorizontalPodAutoscaler) error {
|
||||
_, _, err := s.Update(ctx, autoscaler)
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *storage) DeleteHorizontalPodAutoscaler(ctx api.Context, autoscalerID string) error {
|
||||
_, err := s.Delete(ctx, autoscalerID, nil)
|
||||
return err
|
||||
}
|
||||
86
pkg/registry/horizontalpodautoscaler/rest.go
Normal file
86
pkg/registry/horizontalpodautoscaler/rest.go
Normal file
@@ -0,0 +1,86 @@
|
||||
/*
|
||||
Copyright 2015 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 horizontalpodautoscaler
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/expapi"
|
||||
"k8s.io/kubernetes/pkg/expapi/validation"
|
||||
"k8s.io/kubernetes/pkg/fields"
|
||||
"k8s.io/kubernetes/pkg/labels"
|
||||
"k8s.io/kubernetes/pkg/registry/generic"
|
||||
"k8s.io/kubernetes/pkg/runtime"
|
||||
errs "k8s.io/kubernetes/pkg/util/fielderrors"
|
||||
)
|
||||
|
||||
// autoscalerStrategy implements behavior for HorizontalPodAutoscalers
|
||||
type autoscalerStrategy struct {
|
||||
runtime.ObjectTyper
|
||||
api.NameGenerator
|
||||
}
|
||||
|
||||
// Strategy is the default logic that applies when creating and updating HorizontalPodAutoscaler
|
||||
// objects via the REST API.
|
||||
var Strategy = autoscalerStrategy{api.Scheme, api.SimpleNameGenerator}
|
||||
|
||||
// NamespaceScoped is true for autoscaler.
|
||||
func (autoscalerStrategy) NamespaceScoped() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
// PrepareForCreate clears fields that are not allowed to be set by end users on creation.
|
||||
func (autoscalerStrategy) PrepareForCreate(obj runtime.Object) {
|
||||
_ = obj.(*expapi.HorizontalPodAutoscaler)
|
||||
}
|
||||
|
||||
// Validate validates a new autoscaler.
|
||||
func (autoscalerStrategy) Validate(ctx api.Context, obj runtime.Object) errs.ValidationErrorList {
|
||||
autoscaler := obj.(*expapi.HorizontalPodAutoscaler)
|
||||
return validation.ValidateHorizontalPodAutoscaler(autoscaler)
|
||||
}
|
||||
|
||||
// AllowCreateOnUpdate is false for autoscalers.
|
||||
func (autoscalerStrategy) AllowCreateOnUpdate() bool {
|
||||
return false
|
||||
}
|
||||
|
||||
// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
|
||||
func (autoscalerStrategy) PrepareForUpdate(obj, old runtime.Object) {
|
||||
_ = obj.(*expapi.HorizontalPodAutoscaler)
|
||||
}
|
||||
|
||||
// ValidateUpdate is the default update validation for an end user.
|
||||
func (autoscalerStrategy) ValidateUpdate(ctx api.Context, obj, old runtime.Object) errs.ValidationErrorList {
|
||||
return validation.ValidateHorizontalPodAutoscalerUpdate(obj.(*expapi.HorizontalPodAutoscaler), old.(*expapi.HorizontalPodAutoscaler))
|
||||
}
|
||||
|
||||
func (autoscalerStrategy) AllowUnconditionalUpdate() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
// MatchAutoscaler returns a generic matcher for a given label and field selector.
|
||||
func MatchAutoscaler(label labels.Selector, field fields.Selector) generic.Matcher {
|
||||
return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
|
||||
autoscaler, ok := obj.(*expapi.HorizontalPodAutoscaler)
|
||||
if !ok {
|
||||
return false, fmt.Errorf("not a horizontal pod autoscaler")
|
||||
}
|
||||
return label.Matches(labels.Set(autoscaler.Labels)), nil
|
||||
})
|
||||
}
|
||||
Reference in New Issue
Block a user