horizon: change SAC to add supportive ingestion data

[tsachiherman]

What ?

We need to modify the SAC code to add information to the emitted events that would inform us if that's a SAC or not.
This task is a prerequisite for several of the horizon ingestion support for SAC.

master issue: #4722

( this ticket is a placeholder; clearly, any change to the SAC is not going to be implemented within this repository )

[sreuland]

every emitted event includes asset id in event body.

[Shaptic]

As far as I can tell (add'l context here: #4725 (comment)), there's no definitive way to know that an event came from a SAC without storing the SACs themselves. Otherwise you open yourself up to "SAC-like events" spoofing their behavior.

[tsachiherman]

As far as I can tell (add'l context here: #4725 (comment)), there's no definitive way to know that an event came from a SAC without storing the SACs themselves. Otherwise you open yourself up to "SAC-like events" spoofing their behavior.

I think that Tamir suggested a way to do that without storing the SAC. ( I don't have the link to the PR )

[Shaptic]

I believe you're referencing stellar/rs-soroban-env#686; I'll move my concerns there 👍

[tamirms]

fixed in stellar/rs-soroban-env#705