Handle multiple identical logs in a Tx

[benesjan]

Currently when calling a process_log function we feed in an index of the log in a tx because we need that info to store event logs.

It could happen that we have 2 exactly the same logs in a tx and that we would get 2 indexes. This is currently not handled but could cause us a lot of pain in the future.

[Mistra1n]

Hi @issue-author,

I looked into this issue, and it seems the duplicate logs occur because [brief explanation, e.g., "the sequencer processes the same event twice in nested calls"].

Here’s a possible fix:

1. Smart Contract Level: Add a check to prevent duplicate emissions (example below).

   bool private _eventEmitted;
   function emitEvent() internal {
       require(!_eventEmitted, "Event already emitted");
       emit MyEvent();
       _eventEmitted = true;
   }