Function ReadCacheSnapshot

pkg/controller/model/transform_utils.go:190–211

ReadCacheSnapshot reads all objects owned by root object.

(transCtx graph.TransformContext, root client.Object, ml client.MatchingLabels, kinds ...client.ObjectList)

// ReadCacheSnapshot reads all objects owned by root object.
func ReadCacheSnapshot(transCtx graph.TransformContext, root client.Object, ml client.MatchingLabels, kinds ...client.ObjectList) (ObjectSnapshot, error) {
	snapshot := make(ObjectSnapshot)
	inNs := client.InNamespace(root.GetNamespace())
	for _, list := range kinds {
		if err := transCtx.GetClient().List(transCtx.GetContext(), list, inNs, ml); err != nil {
			return nil, err
		}
		// reflect get list.Items
		items := reflect.ValueOf(list).Elem().FieldByName("Items")
		l := items.Len()
		for i := 0; i < l; i++ {
			// get the underlying object
			object := items.Index(i).Addr().Interface().(client.Object)
			name, err := GetGVKName(object)
			if err != nil {
				return nil, err
			}
			snapshot[*name] = object
		}
	}
	return snapshot, nil
}

func DefaultLess(v1, v2 graph.Vertex) bool {
	o1, ok1 := v1.(*ObjectVertex)