storage.go

Documentation: k8s.io/kubernetes/pkg/registry/networking/servicecidr/storage

     1  /*
     2  Copyright 2023 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 storage
    18  
    19  import (
    20  	"context"
    21  
    22  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    23  	"k8s.io/apimachinery/pkg/runtime"
    24  	"k8s.io/apiserver/pkg/registry/generic"
    25  	genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
    26  	"k8s.io/apiserver/pkg/registry/rest"
    27  	"k8s.io/kubernetes/pkg/apis/networking"
    28  	"k8s.io/kubernetes/pkg/printers"
    29  	printersinternal "k8s.io/kubernetes/pkg/printers/internalversion"
    30  	printerstorage "k8s.io/kubernetes/pkg/printers/storage"
    31  	"k8s.io/kubernetes/pkg/registry/networking/servicecidr"
    32  	"sigs.k8s.io/structured-merge-diff/v4/fieldpath"
    33  )
    34  
    35  // REST implements a RESTStorage for IPRange against etcd
    36  type REST struct {
    37  	*genericregistry.Store
    38  }
    39  
    40  // NewREST returns a RESTStorage object that will work against service CIDRs.
    41  func NewREST(optsGetter generic.RESTOptionsGetter) (*REST, *StatusREST, error) {
    42  	store := &genericregistry.Store{
    43  		NewFunc:                   func() runtime.Object { return &networking.ServiceCIDR{} },
    44  		NewListFunc:               func() runtime.Object { return &networking.ServiceCIDRList{} },
    45  		DefaultQualifiedResource:  networking.Resource("servicecidrs"),
    46  		SingularQualifiedResource: networking.Resource("servicecidr"),
    47  
    48  		CreateStrategy:      servicecidr.Strategy,
    49  		UpdateStrategy:      servicecidr.Strategy,
    50  		DeleteStrategy:      servicecidr.Strategy,
    51  		ResetFieldsStrategy: servicecidr.Strategy,
    52  
    53  		TableConvertor: printerstorage.TableConvertor{TableGenerator: printers.NewTableGenerator().With(printersinternal.AddHandlers)},
    54  	}
    55  	options := &generic.StoreOptions{RESTOptions: optsGetter}
    56  	if err := store.CompleteWithOptions(options); err != nil {
    57  		return nil, nil, err
    58  	}
    59  
    60  	statusStore := *store
    61  	statusStore.UpdateStrategy = servicecidr.StatusStrategy
    62  	statusStore.ResetFieldsStrategy = servicecidr.StatusStrategy
    63  	return &REST{store}, &StatusREST{store: &statusStore}, nil
    64  }
    65  
    66  // StatusREST implements the REST endpoint for changing the status of an ingress
    67  type StatusREST struct {
    68  	store *genericregistry.Store
    69  }
    70  
    71  // New creates an instance of the StatusREST object
    72  func (r *StatusREST) New() runtime.Object {
    73  	return &networking.ServiceCIDR{}
    74  }
    75  
    76  // Destroy cleans up resources on shutdown.
    77  func (r *StatusREST) Destroy() {
    78  	// Given that underlying store is shared with REST,
    79  	// we don't destroy it here explicitly.
    80  }
    81  
    82  // Get retrieves the object from the storage. It is required to support Patch.
    83  func (r *StatusREST) Get(ctx context.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
    84  	return r.store.Get(ctx, name, options)
    85  }
    86  
    87  // Update alters the status subset of an object.
    88  func (r *StatusREST) Update(ctx context.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc, forceAllowCreate bool, options *metav1.UpdateOptions) (runtime.Object, bool, error) {
    89  	// We are explicitly setting forceAllowCreate to false in the call to the underlying storage because
    90  	// subresources should never allow create on update.
    91  	return r.store.Update(ctx, name, objInfo, createValidation, updateValidation, false, options)
    92  }
    93  
    94  func (r *StatusREST) ConvertToTable(ctx context.Context, object runtime.Object, tableOptions runtime.Object) (*metav1.Table, error) {
    95  	return r.store.ConvertToTable(ctx, object, tableOptions)
    96  }
    97  
    98  // GetResetFields implements rest.ResetFieldsStrategy
    99  func (r *StatusREST) GetResetFields() map[fieldpath.APIVersion]*fieldpath.Set {
   100  	return r.store.GetResetFields()
   101  }
   102
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