Upserting resources is an antipattern in cloud resource management. The idiom that works best is to declare all the resources you use and own their lifecycle from cradle to grave.

The problem with upserting is that if the resource already exists, its existing attributes and behavior might be incompatible with the state you're declaring. And it's impossible to devise a general solution that safely transitions an arbitrary resource from state A to state A' in a way that is sure to honor your intent.