k8s.io/kubernetes@v1.31.0-alpha.0.0.20240520171757-56147500dadc/pkg/registry/autoscaling/rest/storage_autoscaling.go (about)

     1  /*
     2  Copyright 2016 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package rest
    18  
    19  import (
    20  	autoscalingapiv1 "k8s.io/api/autoscaling/v1"
    21  	"k8s.io/apiserver/pkg/registry/generic"
    22  	"k8s.io/apiserver/pkg/registry/rest"
    23  	genericapiserver "k8s.io/apiserver/pkg/server"
    24  	serverstorage "k8s.io/apiserver/pkg/server/storage"
    25  	"k8s.io/kubernetes/pkg/api/legacyscheme"
    26  	"k8s.io/kubernetes/pkg/apis/autoscaling"
    27  	autoscalingapiv2 "k8s.io/kubernetes/pkg/apis/autoscaling/v2"
    28  	horizontalpodautoscalerstore "k8s.io/kubernetes/pkg/registry/autoscaling/horizontalpodautoscaler/storage"
    29  )
    30  
    31  type RESTStorageProvider struct{}
    32  
    33  func (p RESTStorageProvider) NewRESTStorage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (genericapiserver.APIGroupInfo, error) {
    34  	apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(autoscaling.GroupName, legacyscheme.Scheme, legacyscheme.ParameterCodec, legacyscheme.Codecs)
    35  	// 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.
    36  	// TODO refactor the plumbing to provide the information in the APIGroupInfo
    37  
    38  	if storageMap, err := p.v2Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
    39  		return genericapiserver.APIGroupInfo{}, err
    40  	} else if len(storageMap) > 0 {
    41  		apiGroupInfo.VersionedResourcesStorageMap[autoscalingapiv2.SchemeGroupVersion.Version] = storageMap
    42  	}
    43  
    44  	if storageMap, err := p.v1Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
    45  		return genericapiserver.APIGroupInfo{}, err
    46  	} else if len(storageMap) > 0 {
    47  		apiGroupInfo.VersionedResourcesStorageMap[autoscalingapiv1.SchemeGroupVersion.Version] = storageMap
    48  	}
    49  
    50  	return apiGroupInfo, nil
    51  }
    52  
    53  func (p RESTStorageProvider) v1Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
    54  	storage := map[string]rest.Storage{}
    55  
    56  	// horizontalpodautoscalers
    57  	if resource := "horizontalpodautoscalers"; apiResourceConfigSource.ResourceEnabled(autoscalingapiv1.SchemeGroupVersion.WithResource(resource)) {
    58  		hpaStorage, hpaStatusStorage, err := horizontalpodautoscalerstore.NewREST(restOptionsGetter)
    59  		if err != nil {
    60  			return storage, err
    61  		}
    62  		storage[resource] = hpaStorage
    63  		storage[resource+"/status"] = hpaStatusStorage
    64  	}
    65  
    66  	return storage, nil
    67  }
    68  
    69  func (p RESTStorageProvider) v2Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
    70  	storage := map[string]rest.Storage{}
    71  
    72  	// horizontalpodautoscalers
    73  	if resource := "horizontalpodautoscalers"; apiResourceConfigSource.ResourceEnabled(autoscalingapiv2.SchemeGroupVersion.WithResource(resource)) {
    74  		hpaStorage, hpaStatusStorage, err := horizontalpodautoscalerstore.NewREST(restOptionsGetter)
    75  		if err != nil {
    76  			return storage, err
    77  		}
    78  		storage[resource] = hpaStorage
    79  		storage[resource+"/status"] = hpaStatusStorage
    80  	}
    81  
    82  	return storage, nil
    83  }
    84  
    85  func (p RESTStorageProvider) GroupName() string {
    86  	return autoscaling.GroupName
    87  }