func (t *tracker) Add(obj runtime.Object) error {
if meta.IsListType(obj) {
return t.addList(obj, false)
}
objMeta, err := meta.Accessor(obj)
if err != nil {
return err
}
return t.add(obj, objMeta.GetNamespace(), false)
}
func (t *tracker) List(gvk schema.GroupVersionKind, ns string) (runtime.Object, error) {
// Heuristic for list kind: original kind + List suffix. Might
// not always be true but this tracker has a pretty limited
// understanding of the actual API model.
listGVK := gvk
listGVK.Kind = listGVK.Kind + "List"
list, err := t.scheme.New(listGVK)
if err != nil {
return nil, err
}
if !meta.IsListType(list) {
return nil, fmt.Errorf("%q is not a list type", listGVK.Kind)
}
t.lock.RLock()
defer t.lock.RUnlock()
objs, ok := t.objects[gvk]
if !ok {
return list, nil
}
matchingObjs, err := filterByNamespaceAndName(objs, ns, "")
if err != nil {
return nil, err
}
if err := meta.SetList(list, matchingObjs); err != nil {
return nil, err
}
if list, err = t.scheme.Copy(list); err != nil {
return nil, err
}
return list, nil
}
func (t *tracker) add(obj runtime.Object, replaceExisting bool) error {
if meta.IsListType(obj) {
return t.addList(obj, replaceExisting)
}
gvks, _, err := t.scheme.ObjectKinds(obj)
if err != nil {
return err
}
if len(gvks) == 0 {
return fmt.Errorf("no registered kinds for %v", obj)
}
t.lock.Lock()
defer t.lock.Unlock()
for _, gvk := range gvks {
gr := schema.GroupResource{Group: gvk.Group, Resource: gvk.Kind}
// To avoid the object from being accidentally modified by caller
// after it's been added to the tracker, we always store the deep
// copy.
obj, err = t.scheme.Copy(obj)
if err != nil {
return err
}
if status, ok := obj.(*metav1.Status); ok && status.Details != nil {
gvk.Kind = status.Details.Kind
}
newMeta, err := meta.Accessor(obj)
if err != nil {
return err
}
if err := checkNamespace(gvk, newMeta.GetNamespace()); err != nil {
return err
}
for i, existingObj := range t.objects[gvk] {
oldMeta, err := meta.Accessor(existingObj)
if err != nil {
return err
}
if oldMeta.GetNamespace() == newMeta.GetNamespace() && oldMeta.GetName() == newMeta.GetName() {
if replaceExisting {
t.objects[gvk][i] = obj
return nil
}
return errors.NewAlreadyExists(gr, newMeta.GetName())
}
}
if replaceExisting {
// Tried to update but no matching object was found.
return errors.NewNotFound(gr, newMeta.GetName())
}
t.objects[gvk] = append(t.objects[gvk], obj)
}
return nil
}