scale.go

/*
Copyright 2017 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// This file was automatically generated by lister-gen

package v1beta1

import (
	v1beta1 "k8s.io/api/extensions/v1beta1"
	"k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/client-go/tools/cache"
)

// ScaleLister helps list Scales.
type ScaleLister interface {
	// List lists all Scales in the indexer.
	List(selector labels.Selector) (ret []*v1beta1.Scale, err error)
	// Scales returns an object that can list and get Scales.
	Scales(namespace string) ScaleNamespaceLister
	ScaleListerExpansion
}

// scaleLister implements the ScaleLister interface.
type scaleLister struct {
	indexer cache.Indexer
}

// NewScaleLister returns a new ScaleLister.
func NewScaleLister(indexer cache.Indexer) ScaleLister {
	return &scaleLister{indexer: indexer}
}

// List lists all Scales in the indexer.
func (s *scaleLister) List(selector labels.Selector) (ret []*v1beta1.Scale, err error) {
	err = cache.ListAll(s.indexer, selector, func(m interface{}) {
		ret = append(ret, m.(*v1beta1.Scale))
	})
	return ret, err
}

// Scales returns an object that can list and get Scales.
func (s *scaleLister) Scales(namespace string) ScaleNamespaceLister {
	return scaleNamespaceLister{indexer: s.indexer, namespace: namespace}
}

// ScaleNamespaceLister helps list and get Scales.
type ScaleNamespaceLister interface {
	// List lists all Scales in the indexer for a given namespace.
	List(selector labels.Selector) (ret []*v1beta1.Scale, err error)
	// Get retrieves the Scale from the indexer for a given namespace and name.
	Get(name string) (*v1beta1.Scale, error)
	ScaleNamespaceListerExpansion
}

// scaleNamespaceLister implements the ScaleNamespaceLister
// interface.
type scaleNamespaceLister struct {
	indexer   cache.Indexer
	namespace string
}

// List lists all Scales in the indexer for a given namespace.
func (s scaleNamespaceLister) List(selector labels.Selector) (ret []*v1beta1.Scale, err error) {
	err = cache.ListAllByNamespace(s.indexer, s.namespace, selector, func(m interface{}) {
		ret = append(ret, m.(*v1beta1.Scale))
	})
	return ret, err
}

// Get retrieves the Scale from the indexer for a given namespace and name.
func (s scaleNamespaceLister) Get(name string) (*v1beta1.Scale, error) {
	obj, exists, err := s.indexer.GetByKey(s.namespace + "/" + name)
	if err != nil {
		return nil, err
	}
	if !exists {
		return nil, errors.NewNotFound(v1beta1.Resource("scale"), name)
	}
	return obj.(*v1beta1.Scale), nil
}