Source file `dal_slot_storage.ml`

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(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2022 Nomadic Labs <contact@nomadic-labs.com>                *)
(*                                                                           *)
(* Permission is hereby granted, free of charge, to any person obtaining a   *)
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(*                                                                           *)
(*****************************************************************************)

let find ctxt level = Storage.Dal.Slot_headers.find ctxt level

let finalize_current_slots ctxt =
  let current_level = Raw_context.current_level ctxt in
  let slots = Raw_context.Dal.candidates ctxt in
  match slots with
  | [] -> Lwt.return ctxt
  | _ :: _ -> Storage.Dal.Slot_headers.add ctxt current_level.level slots

let compute_available_slots ctxt slots =
  let fold_available_slots available_slots slot =
    if Raw_context.Dal.is_slot_available ctxt slot.Dal_slot_repr.index then
      Dal_endorsement_repr.commit available_slots slot.Dal_slot_repr.index
    else available_slots
  in
  List.fold_left fold_available_slots Dal_endorsement_repr.empty slots

let finalize_pending_slots ctxt =
  let current_level = Raw_context.current_level ctxt in
  let Constants_parametric_repr.{dal; _} = Raw_context.constants ctxt in
  match Raw_level_repr.(sub current_level.level dal.endorsement_lag) with
  | None -> return (ctxt, Dal_endorsement_repr.empty)
  | Some level_endorsed -> (
      Storage.Dal.Slot_headers.find ctxt level_endorsed >>=? function
      | None -> return (ctxt, Dal_endorsement_repr.empty)
      | Some slots ->
          let available_slots = compute_available_slots ctxt slots in
          (* DAL/FIXME https://gitlab.com/tezos/tezos/-/issues/3112

             At this point, available slots can be integrated into
             SCORU inboxes *)
          Storage.Dal.Slot_headers.remove ctxt level_endorsed >>= fun ctxt ->
          return (ctxt, available_slots))