// WaitForADeployment waits for a Deployment to fulfill the isOK function func WaitForADeployment(client kclient.ReplicationControllerInterface, name string, isOK, isFailed func(*kapi.ReplicationController) bool) error { for { requirement, err := labels.NewRequirement(deployapi.DeploymentConfigAnnotation, labels.EqualsOperator, kutil.NewStringSet(name)) if err != nil { return fmt.Errorf("unexpected error generating label selector: %v", err) } list, err := client.List(labels.LabelSelector{*requirement}) if err != nil { return err } for i := range list.Items { if isOK(&list.Items[i]) { return nil } if isFailed(&list.Items[i]) { return fmt.Errorf("The deployment %q status is %q", name, list.Items[i].Annotations[deployapi.DeploymentStatusAnnotation]) } } rv := list.ResourceVersion w, err := client.Watch(labels.LabelSelector{*requirement}, fields.Everything(), rv) if err != nil { return err } defer w.Stop() for { val, ok := <-w.ResultChan() if !ok { // reget and re-watch break } if e, ok := val.Object.(*kapi.ReplicationController); ok { if isOK(e) { return nil } if isFailed(e) { return fmt.Errorf("The deployment %q status is %q", name, e.Annotations[deployapi.DeploymentStatusAnnotation]) } } } } }