storage_storage.go

Documentation: k8s.io/kubernetes/pkg/registry/storage/rest

     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  	storageapiv1 "k8s.io/api/storage/v1"
    21  	storageapiv1alpha1 "k8s.io/api/storage/v1alpha1"
    22  	storageapiv1beta1 "k8s.io/api/storage/v1beta1"
    23  	"k8s.io/apiserver/pkg/registry/generic"
    24  	"k8s.io/apiserver/pkg/registry/rest"
    25  	genericapiserver "k8s.io/apiserver/pkg/server"
    26  	serverstorage "k8s.io/apiserver/pkg/server/storage"
    27  	"k8s.io/kubernetes/pkg/api/legacyscheme"
    28  	storageapi "k8s.io/kubernetes/pkg/apis/storage"
    29  	csidriverstore "k8s.io/kubernetes/pkg/registry/storage/csidriver/storage"
    30  	csinodestore "k8s.io/kubernetes/pkg/registry/storage/csinode/storage"
    31  	csistoragecapacitystore "k8s.io/kubernetes/pkg/registry/storage/csistoragecapacity/storage"
    32  	storageclassstore "k8s.io/kubernetes/pkg/registry/storage/storageclass/storage"
    33  	volumeattachmentstore "k8s.io/kubernetes/pkg/registry/storage/volumeattachment/storage"
    34  	volumeattributesclassstore "k8s.io/kubernetes/pkg/registry/storage/volumeattributesclass/storage"
    35  )
    36  
    37  type RESTStorageProvider struct {
    38  }
    39  
    40  func (p RESTStorageProvider) NewRESTStorage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (genericapiserver.APIGroupInfo, error) {
    41  	apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(storageapi.GroupName, legacyscheme.Scheme, legacyscheme.ParameterCodec, legacyscheme.Codecs)
    42  	// 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.
    43  	// TODO refactor the plumbing to provide the information in the APIGroupInfo
    44  
    45  	if storageMap, err := p.v1alpha1Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
    46  		return genericapiserver.APIGroupInfo{}, err
    47  	} else if len(storageMap) > 0 {
    48  		apiGroupInfo.VersionedResourcesStorageMap[storageapiv1alpha1.SchemeGroupVersion.Version] = storageMap
    49  	}
    50  	if storageMap, err := p.v1beta1Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
    51  		return genericapiserver.APIGroupInfo{}, err
    52  	} else if len(storageMap) > 0 {
    53  		apiGroupInfo.VersionedResourcesStorageMap[storageapiv1beta1.SchemeGroupVersion.Version] = storageMap
    54  	}
    55  	if storageMap, err := p.v1Storage(apiResourceConfigSource, restOptionsGetter); err != nil {
    56  		return genericapiserver.APIGroupInfo{}, err
    57  	} else if len(storageMap) > 0 {
    58  		apiGroupInfo.VersionedResourcesStorageMap[storageapiv1.SchemeGroupVersion.Version] = storageMap
    59  	}
    60  
    61  	return apiGroupInfo, nil
    62  }
    63  
    64  func (p RESTStorageProvider) v1alpha1Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
    65  	storage := map[string]rest.Storage{}
    66  
    67  	// register volumeattributesclasses
    68  	if resource := "volumeattributesclasses"; apiResourceConfigSource.ResourceEnabled(storageapiv1alpha1.SchemeGroupVersion.WithResource(resource)) {
    69  		volumeAttributesClassStorage, err := volumeattributesclassstore.NewREST(restOptionsGetter)
    70  		if err != nil {
    71  			return storage, err
    72  		}
    73  		storage[resource] = volumeAttributesClassStorage
    74  	}
    75  
    76  	return storage, nil
    77  }
    78  
    79  func (p RESTStorageProvider) v1beta1Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
    80  	storage := map[string]rest.Storage{}
    81  
    82  	return storage, nil
    83  }
    84  
    85  func (p RESTStorageProvider) v1Storage(apiResourceConfigSource serverstorage.APIResourceConfigSource, restOptionsGetter generic.RESTOptionsGetter) (map[string]rest.Storage, error) {
    86  	storageClassStorage, err := storageclassstore.NewREST(restOptionsGetter)
    87  	if err != nil {
    88  		return nil, err
    89  	}
    90  	volumeAttachmentStorage, err := volumeattachmentstore.NewStorage(restOptionsGetter)
    91  	if err != nil {
    92  		return nil, err
    93  	}
    94  
    95  	storage := map[string]rest.Storage{}
    96  
    97  	// storageclasses
    98  	if resource := "storageclasses"; apiResourceConfigSource.ResourceEnabled(storageapiv1.SchemeGroupVersion.WithResource(resource)) {
    99  		storage[resource] = storageClassStorage
   100  	}
   101  
   102  	// volumeattachments
   103  	if resource := "volumeattachments"; apiResourceConfigSource.ResourceEnabled(storageapiv1.SchemeGroupVersion.WithResource(resource)) {
   104  		storage[resource] = volumeAttachmentStorage.VolumeAttachment
   105  		storage[resource+"/status"] = volumeAttachmentStorage.Status
   106  	}
   107  
   108  	// register csinodes
   109  	if resource := "csinodes"; apiResourceConfigSource.ResourceEnabled(storageapiv1.SchemeGroupVersion.WithResource(resource)) {
   110  		csiNodeStorage, err := csinodestore.NewStorage(restOptionsGetter)
   111  		if err != nil {
   112  			return nil, err
   113  		}
   114  		storage[resource] = csiNodeStorage.CSINode
   115  	}
   116  
   117  	// register csidrivers
   118  	if resource := "csidrivers"; apiResourceConfigSource.ResourceEnabled(storageapiv1.SchemeGroupVersion.WithResource(resource)) {
   119  		csiDriverStorage, err := csidriverstore.NewStorage(restOptionsGetter)
   120  		if err != nil {
   121  			return storage, err
   122  		}
   123  		storage[resource] = csiDriverStorage.CSIDriver
   124  	}
   125  
   126  	// register csistoragecapacities
   127  	if resource := "csistoragecapacities"; apiResourceConfigSource.ResourceEnabled(storageapiv1.SchemeGroupVersion.WithResource(resource)) {
   128  		csiStorageStorage, err := csistoragecapacitystore.NewStorage(restOptionsGetter)
   129  		if err != nil {
   130  			return storage, err
   131  		}
   132  		storage[resource] = csiStorageStorage.CSIStorageCapacity
   133  	}
   134  
   135  	return storage, nil
   136  }
   137  
   138  func (p RESTStorageProvider) GroupName() string {
   139  	return storageapi.GroupName
   140  }
   141
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