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kyverno/pkg/namespace/expansion.go
2019-11-12 10:05:10 -08:00

50 lines
1.4 KiB
Go

package namespace
import (
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/labels"
v1CoreLister "k8s.io/client-go/listers/core/v1"
)
//NamespaceListerExpansion ...
type NamespaceListerExpansion interface {
v1CoreLister.NamespaceLister
// List lists all Namespaces in the indexer.
ListResources(selector labels.Selector) (ret []*v1.Namespace, err error)
// GetsResource and injects gvk
GetResource(name string) (*v1.Namespace, error)
}
//NamespaceLister ...
type NamespaceLister struct {
v1CoreLister.NamespaceLister
}
//NewNamespaceLister returns a new NamespaceLister
func NewNamespaceLister(nsLister v1CoreLister.NamespaceLister) NamespaceListerExpansion {
nsl := NamespaceLister{
nsLister,
}
return &nsl
}
//ListResources is a wrapper to List and adds the resource kind information
// as the lister is specific to a gvk we can harcode the values here
func (nsl *NamespaceLister) ListResources(selector labels.Selector) (ret []*v1.Namespace, err error) {
namespaces, err := nsl.List(selector)
for index := range namespaces {
namespaces[index].SetGroupVersionKind(v1.SchemeGroupVersion.WithKind("Namespace"))
}
return namespaces, err
}
//GetResource is a wrapper to get the resource and inject the GVK
func (nsl *NamespaceLister) GetResource(name string) (*v1.Namespace, error) {
namespace, err := nsl.Get(name)
if err != nil {
return nil, err
}
namespace.SetGroupVersionKind(v1.SchemeGroupVersion.WithKind("Namespace"))
return namespace, err
}