func (r *HealthyRegistry) WatchMinions(ctx api.Context, label, field labels.Selector, resourceVersion string) (watch.Interface, error) {
w, err := r.delegate.WatchMinions(ctx, label, field, resourceVersion)
if err != nil {
return nil, err
}
return watch.Filter(w, watch.FilterFunc(func(in watch.Event) (watch.Event, bool) {
if node, ok := in.Object.(*api.Node); ok && node != nil {
in.Object = r.checkMinion(node)
}
return in, true
})), nil
}
// Watch returns ReplicationController events via a watch.Interface.
// It implements apiserver.ResourceWatcher.
func (rs *RegistryStorage) Watch(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
if !field.Empty() {
return nil, fmt.Errorf("no field selector implemented for controllers")
}
incoming, err := rs.registry.WatchControllers(resourceVersion)
if err != nil {
return nil, err
}
return watch.Filter(incoming, func(e watch.Event) (watch.Event, bool) {
repController := e.Object.(*api.ReplicationController)
return e, label.Matches(labels.Set(repController.Labels))
}), nil
}
// Watch begins watching for new, changed, or deleted pods.
func (rs *RegistryStorage) Watch(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
source, err := rs.registry.WatchPods(resourceVersion)
if err != nil {
return nil, err
}
return watch.Filter(source, func(e watch.Event) (watch.Event, bool) {
pod := e.Object.(*api.Pod)
fields := labels.Set{
"ID": pod.ID,
"DesiredState.Status": string(pod.CurrentState.Status),
"DesiredState.Host": pod.CurrentState.Host,
}
return e, label.Matches(labels.Set(pod.Labels)) && field.Matches(fields)
}), nil
}
// Watch returns ReplicationController events via a watch.Interface.
// It implements apiserver.ResourceWatcher.
func (rs *REST) Watch(ctx api.Context, label, field labels.Selector, resourceVersion string) (watch.Interface, error) {
if !field.Empty() {
return nil, fmt.Errorf("no field selector implemented for controllers")
}
incoming, err := rs.registry.WatchControllers(ctx, resourceVersion)
if err != nil {
return nil, err
}
// TODO(lavalamp): remove watch.Filter, which is broken. Implement consistent way of filtering.
// TODO(lavalamp): this watch method needs a test.
return watch.Filter(incoming, func(e watch.Event) (watch.Event, bool) {
repController, ok := e.Object.(*api.ReplicationController)
if !ok {
// must be an error event-- pass it on
return e, true
}
match := label.Matches(labels.Set(repController.Labels))
if match {
rs.fillCurrentState(ctx, repController)
}
return e, match
}), nil
}