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9f36c8d718
In the API, the effect of the feature gate is that alpha fields get dropped on
create. They get preserved during updates if already set. The
PodSchedulingContext registration is *not* restricted by the feature gate.
This enables deleting stale PodSchedulingContext objects after disabling
the feature gate.
The scheduler checks the new feature gate before setting up an informer for
PodSchedulingContext objects and when deciding whether it can schedule a
pod. If any claim depends on a control plane controller, the scheduler bails
out, leading to:
Status: Pending
...
Warning FailedScheduling 73s default-scheduler 0/1 nodes are available: resourceclaim depends on disabled DRAControlPlaneController feature. no new claims to deallocate, preemption: 0/1 nodes are available: 1 Preemption is not helpful for scheduling.
The rest of the changes prepare for testing the new feature separately from
"structured parameters". The goal is to have base "dra" jobs which just enable
and test those, then "classic-dra" jobs which add DRAControlPlaneController.
105 lines
4.5 KiB
Go
105 lines
4.5 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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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 rest
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import (
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resourcev1alpha3 "k8s.io/api/resource/v1alpha3"
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"k8s.io/apiserver/pkg/registry/generic"
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"k8s.io/apiserver/pkg/registry/rest"
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genericapiserver "k8s.io/apiserver/pkg/server"
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serverstorage "k8s.io/apiserver/pkg/server/storage"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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"k8s.io/kubernetes/pkg/apis/resource"
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deviceclassstore "k8s.io/kubernetes/pkg/registry/resource/deviceclass/storage"
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podschedulingcontextsstore "k8s.io/kubernetes/pkg/registry/resource/podschedulingcontext/storage"
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resourceclaimstore "k8s.io/kubernetes/pkg/registry/resource/resourceclaim/storage"
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resourceclaimtemplatestore "k8s.io/kubernetes/pkg/registry/resource/resourceclaimtemplate/storage"
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resourceslicestore "k8s.io/kubernetes/pkg/registry/resource/resourceslice/storage"
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)
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type RESTStorageProvider struct{}
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func (p RESTStorageProvider) NewRESTStorage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (genericapiserver.APIGroupInfo, error) {
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apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(resource.GroupName, legacyscheme.Scheme, legacyscheme.ParameterCodec, legacyscheme.Codecs)
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// If you add a version here, be sure to add an entry in `k8s.io/kubernetes/cmd/kube-apiserver/app/aggregator.go with specific priorities.
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// TODO refactor the plumbing to provide the information in the APIGroupInfo
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if storageMap, err := p.v1alpha3Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
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return genericapiserver.APIGroupInfo{}, err
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} else if len(storageMap) > 0 {
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apiGroupInfo.VersionedResourcesStorageMap[resourcev1alpha3.SchemeGroupVersion.Version] = storageMap
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}
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return apiGroupInfo, nil
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}
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func (p RESTStorageProvider) v1alpha3Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
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storage := map[string]rest.Storage{}
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if resource := "deviceclasses"; apiResourceConfigSource.ResourceEnabled(resourcev1alpha3.SchemeGroupVersion.WithResource(resource)) {
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deviceclassStorage, err := deviceclassstore.NewREST(restOptionsGetter)
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if err != nil {
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return nil, err
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}
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storage[resource] = deviceclassStorage
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}
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if resource := "resourceclaims"; apiResourceConfigSource.ResourceEnabled(resourcev1alpha3.SchemeGroupVersion.WithResource(resource)) {
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resourceClaimStorage, resourceClaimStatusStorage, err := resourceclaimstore.NewREST(restOptionsGetter)
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if err != nil {
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return nil, err
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}
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storage[resource] = resourceClaimStorage
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storage[resource+"/status"] = resourceClaimStatusStorage
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}
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if resource := "resourceclaimtemplates"; apiResourceConfigSource.ResourceEnabled(resourcev1alpha3.SchemeGroupVersion.WithResource(resource)) {
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resourceClaimTemplateStorage, err := resourceclaimtemplatestore.NewREST(restOptionsGetter)
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if err != nil {
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return nil, err
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}
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storage[resource] = resourceClaimTemplateStorage
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}
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// Registered also without the corresponding DRAControlPlaneController feature gate for the
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// same reasons as registering the other types without a feature gate check: it might be
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// useful to provide access to these resources while their feature is off to allow cleaning
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// them up.
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if resource := "podschedulingcontexts"; apiResourceConfigSource.ResourceEnabled(resourcev1alpha3.SchemeGroupVersion.WithResource(resource)) {
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podSchedulingStorage, podSchedulingStatusStorage, err := podschedulingcontextsstore.NewREST(restOptionsGetter)
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if err != nil {
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return nil, err
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}
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storage[resource] = podSchedulingStorage
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storage[resource+"/status"] = podSchedulingStatusStorage
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}
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if resource := "resourceslices"; apiResourceConfigSource.ResourceEnabled(resourcev1alpha3.SchemeGroupVersion.WithResource(resource)) {
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resourceSliceStorage, err := resourceslicestore.NewREST(restOptionsGetter)
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if err != nil {
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return nil, err
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}
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storage[resource] = resourceSliceStorage
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}
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return storage, nil
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}
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func (p RESTStorageProvider) GroupName() string {
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return resource.GroupName
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}
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