unstructured.go

package unstructured

import (
	"time"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/watch"
	"k8s.io/client-go/dynamic"
	"k8s.io/client-go/informers/internalinterfaces"
	"k8s.io/client-go/tools/cache"
)

// NewUnstructuredInformer constructs a new informer for Unstructured type.
// Always prefer using an informer factory to get a shared informer instead of getting an independent
// one. This reduces memory footprint and number of connections to the server.
func NewUnstructuredInformer(resource schema.GroupVersionResource, client dynamic.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
	return NewFilteredUnstructuredInformer(resource, client, namespace, resyncPeriod, indexers, nil)
}

// NewFilteredUnstructuredInformer constructs a new informer for Unstructured type.
// Always prefer using an informer factory to get a shared informer instead of getting an independent
// one. This reduces memory footprint and number of connections to the server.
func NewFilteredUnstructuredInformer(resource schema.GroupVersionResource, client dynamic.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
	return cache.NewSharedIndexInformer(
		&cache.ListWatch{
			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
				if tweakListOptions != nil {
					tweakListOptions(&options)
				}
				return client.Resource(resource).Namespace(namespace).List(options)
			},
			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
				if tweakListOptions != nil {
					tweakListOptions(&options)
				}
				return client.Resource(resource).Namespace(namespace).Watch(options)
			},
		},
		&unstructured.Unstructured{},
		resyncPeriod,
		indexers,
	)
}