// GetFirstPod returns a pod matching the namespace and label selector
// and the number of all pods that match the label selector.
func GetFirstPod(client coreclient.PodsGetter, namespace string, selector labels.Selector, timeout time.Duration, sortBy func([]*v1.Pod) sort.Interface) (*api.Pod, int, error) {
options := api.ListOptions{LabelSelector: selector}
podList, err := client.Pods(namespace).List(options)
if err != nil {
return nil, 0, err
}
pods := []*v1.Pod{}
for i := range podList.Items {
pod := podList.Items[i]
externalPod := &v1.Pod{}
v1.Convert_api_Pod_To_v1_Pod(&pod, externalPod, nil)
pods = append(pods, externalPod)
}
if len(pods) > 0 {
sort.Sort(sortBy(pods))
internalPod := &api.Pod{}
v1.Convert_v1_Pod_To_api_Pod(pods[0], internalPod, nil)
return internalPod, len(podList.Items), nil
}
// Watch until we observe a pod
options.ResourceVersion = podList.ResourceVersion
w, err := client.Pods(namespace).Watch(options)
if err != nil {
return nil, 0, err
}
defer w.Stop()
condition := func(event watch.Event) (bool, error) {
return event.Type == watch.Added || event.Type == watch.Modified, nil
}
event, err := watch.Until(timeout, w, condition)
if err != nil {
return nil, 0, err
}
pod, ok := event.Object.(*api.Pod)
if !ok {
return nil, 0, fmt.Errorf("%#v is not a pod event", event)
}
return pod, 1, nil
}
