generic.go

Documentation: github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions

     1  /*
     2  Copyright 2020 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  // Code generated by informer-gen. DO NOT EDIT.
    18  
    19  package externalversions
    20  
    21  import (
    22  	"fmt"
    23  
    24  	v1 "github.com/kubernetes-csi/external-snapshotter/client/v4/apis/volumesnapshot/v1"
    25  	v1beta1 "github.com/kubernetes-csi/external-snapshotter/client/v4/apis/volumesnapshot/v1beta1"
    26  	schema "k8s.io/apimachinery/pkg/runtime/schema"
    27  	cache "k8s.io/client-go/tools/cache"
    28  )
    29  
    30  // GenericInformer is type of SharedIndexInformer which will locate and delegate to other
    31  // sharedInformers based on type
    32  type GenericInformer interface {
    33  	Informer() cache.SharedIndexInformer
    34  	Lister() cache.GenericLister
    35  }
    36  
    37  type genericInformer struct {
    38  	informer cache.SharedIndexInformer
    39  	resource schema.GroupResource
    40  }
    41  
    42  // Informer returns the SharedIndexInformer.
    43  func (f *genericInformer) Informer() cache.SharedIndexInformer {
    44  	return f.informer
    45  }
    46  
    47  // Lister returns the GenericLister.
    48  func (f *genericInformer) Lister() cache.GenericLister {
    49  	return cache.NewGenericLister(f.Informer().GetIndexer(), f.resource)
    50  }
    51  
    52  // ForResource gives generic access to a shared informer of the matching type
    53  // TODO extend this to unknown resources with a client pool
    54  func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
    55  	switch resource {
    56  	// Group=snapshot.storage.k8s.io, Version=v1
    57  	case v1.SchemeGroupVersion.WithResource("volumesnapshots"):
    58  		return &genericInformer{resource: resource.GroupResource(), informer: f.Snapshot().V1().VolumeSnapshots().Informer()}, nil
    59  	case v1.SchemeGroupVersion.WithResource("volumesnapshotclasses"):
    60  		return &genericInformer{resource: resource.GroupResource(), informer: f.Snapshot().V1().VolumeSnapshotClasses().Informer()}, nil
    61  	case v1.SchemeGroupVersion.WithResource("volumesnapshotcontents"):
    62  		return &genericInformer{resource: resource.GroupResource(), informer: f.Snapshot().V1().VolumeSnapshotContents().Informer()}, nil
    63  
    64  		// Group=snapshot.storage.k8s.io, Version=v1beta1
    65  	case v1beta1.SchemeGroupVersion.WithResource("volumesnapshots"):
    66  		return &genericInformer{resource: resource.GroupResource(), informer: f.Snapshot().V1beta1().VolumeSnapshots().Informer()}, nil
    67  	case v1beta1.SchemeGroupVersion.WithResource("volumesnapshotclasses"):
    68  		return &genericInformer{resource: resource.GroupResource(), informer: f.Snapshot().V1beta1().VolumeSnapshotClasses().Informer()}, nil
    69  	case v1beta1.SchemeGroupVersion.WithResource("volumesnapshotcontents"):
    70  		return &genericInformer{resource: resource.GroupResource(), informer: f.Snapshot().V1beta1().VolumeSnapshotContents().Informer()}, nil
    71  
    72  	}
    73  
    74  	return nil, fmt.Errorf("no informer found for %v", resource)
    75  }
    76
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