// NewPodWatch creates a pod watching function which is backed by a
// FIFO/reflector pair. This avoids managing watches directly.
// A stop channel to close the watch's reflector is also returned.
// It is the caller's responsibility to defer closing the stop channel to prevent leaking resources.
func NewPodWatch(client kclient.PodInterface, namespace, name, resourceVersion string, stopChannel chan struct{}) func() *kapi.Pod {
fieldSelector := fields.OneTermEqualSelector("metadata.name", name)
podLW := &cache.ListWatch{
ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
options.FieldSelector = fieldSelector
return client.List(options)
},
WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
options.FieldSelector = fieldSelector
return client.Watch(options)
},
}
queue := cache.NewResyncableFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(podLW, &kapi.Pod{}, queue, 1*time.Minute).RunUntil(stopChannel)
return func() *kapi.Pod {
obj := cache.Pop(queue)
return obj.(*kapi.Pod)
}
}
