Source file dal_plugin.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   *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense,  *)
(* and/or sell copies of the Software, and to permit persons to whom the     *)
(* Software is furnished to do so, subject to the following conditions:      *)
(*                                                                           *)
(* The above copyright notice and this permission notice shall be included   *)
(* in all copies or substantial portions of the Software.                    *)
(*                                                                           *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL   *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING   *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER       *)
(* DEALINGS IN THE SOFTWARE.                                                 *)
(*                                                                           *)
(*****************************************************************************)

type operation_application_result = Succeeded | Failed

type slot_index = int

type slot_header = {
  published_level : int32;
  slot_index : slot_index;
  commitment : Tezos_crypto_dal.Cryptobox.Verifier.commitment;
}

type proto_parameters = {
  feature_enable : bool;
  number_of_slots : int;
  attestation_lag : int;
  attestation_threshold : int;
  cryptobox_parameters : Tezos_crypto_dal.Cryptobox.Verifier.parameters;
  blocks_per_epoch : int32;
}

module type T = sig
  module Proto : Registered_protocol.T

  type block_info

  val block_info :
    ?chain:Tezos_shell_services.Block_services.chain ->
    ?block:Tezos_shell_services.Block_services.block ->
    metadata:[`Always | `Never] ->
    Tezos_rpc.Context.generic ->
    block_info tzresult Lwt.t

  val get_constants :
    Tezos_shell_services.Chain_services.chain ->
    Tezos_shell_services.Block_services.block ->
    Tezos_rpc.Context.generic ->
    proto_parameters tzresult Lwt.t

  val get_published_slot_headers :
    block_info ->
    (slot_header * operation_application_result) list tzresult Lwt.t

  val get_committee :
    Tezos_rpc.Context.generic ->
    level:int32 ->
    (int * int) Tezos_crypto.Signature.Public_key_hash.Map.t tzresult Lwt.t

  val attested_slot_headers :
    block_info -> number_of_slots:int -> slot_index list tzresult
end

let table : (module T) Protocol_hash.Table.t = Protocol_hash.Table.create 5

let register (module Plugin : T) =
  assert (not (Protocol_hash.Table.mem table Plugin.Proto.hash)) ;
  Protocol_hash.Table.add table Plugin.Proto.hash (module Plugin)

let get hash = Protocol_hash.Table.find table hash