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(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.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. *)
(* *)
(*****************************************************************************)
let recorded_proposal_count_for_delegate ctxt proposer =
Storage.Vote.Proposals_count.get_option ctxt proposer
>>=? function None -> return 0 | Some count -> return count
let record_proposal ctxt proposal proposer =
recorded_proposal_count_for_delegate ctxt proposer
>>=? fun count ->
Storage.Vote.Proposals_count.init_set ctxt proposer (count + 1)
>>= fun ctxt ->
Storage.Vote.Proposals.add ctxt (proposal, proposer)
>>= fun ctxt -> return ctxt
let get_proposals ctxt =
Storage.Vote.Proposals.fold
ctxt
~init:(ok Protocol_hash.Map.empty)
~f:(fun (proposal, delegate) acc ->
(* Assuming the same listings is used at votings *)
Storage.Vote.Listings.get ctxt delegate
>>=? fun weight ->
Lwt.return
( acc
>>? fun acc ->
let previous =
match Protocol_hash.Map.find_opt proposal acc with
| None ->
0l
| Some x ->
x
in
ok (Protocol_hash.Map.add proposal (Int32.add weight previous) acc) ))
let clear_proposals ctxt =
Storage.Vote.Proposals_count.clear ctxt
>>= fun ctxt -> Storage.Vote.Proposals.clear ctxt
type ballots = {yay : int32; nay : int32; pass : int32}
let ballots_encoding =
let open Data_encoding in
conv
(fun {yay; nay; pass} -> (yay, nay, pass))
(fun (yay, nay, pass) -> {yay; nay; pass})
@@ obj3 (req "yay" int32) (req "nay" int32) (req "pass" int32)
let has_recorded_ballot = Storage.Vote.Ballots.mem
let record_ballot = Storage.Vote.Ballots.init
let get_ballots ctxt =
Storage.Vote.Ballots.fold
ctxt
~f:(fun delegate ballot (ballots : ballots tzresult) ->
(* Assuming the same listings is used at votings *)
Storage.Vote.Listings.get ctxt delegate
>>=? fun weight ->
let count = Int32.add weight in
Lwt.return
( ballots
>>? fun ballots ->
match ballot with
| Yay ->
ok {ballots with yay = count ballots.yay}
| Nay ->
ok {ballots with nay = count ballots.nay}
| Pass ->
ok {ballots with pass = count ballots.pass} ))
~init:(ok {yay = 0l; nay = 0l; pass = 0l})
let get_ballot_list = Storage.Vote.Ballots.bindings
let clear_ballots = Storage.Vote.Ballots.clear
let listings_encoding =
Data_encoding.(
list
(obj2 (req "pkh" Signature.Public_key_hash.encoding) (req "rolls" int32)))
let freeze_listings ctxt =
Roll_storage.fold ctxt (ctxt, 0l) ~f:(fun _roll delegate (ctxt, total) ->
(* TODO use snapshots *)
let delegate = Signature.Public_key.hash delegate in
Storage.Vote.Listings.get_option ctxt delegate
>>=? (function None -> return 0l | Some count -> return count)
>>=? fun count ->
Storage.Vote.Listings.init_set ctxt delegate (Int32.succ count)
>>= fun ctxt -> return (ctxt, Int32.succ total))
>>=? fun (ctxt, total) ->
Storage.Vote.Listings_size.init ctxt total >>=? fun ctxt -> return ctxt
let listing_size = Storage.Vote.Listings_size.get
let in_listings = Storage.Vote.Listings.mem
let get_listings = Storage.Vote.Listings.bindings
let clear_listings ctxt =
Storage.Vote.Listings.clear ctxt
>>= fun ctxt ->
Storage.Vote.Listings_size.remove ctxt >>= fun ctxt -> return ctxt
let get_current_period_kind = Storage.Vote.Current_period_kind.get
let set_current_period_kind = Storage.Vote.Current_period_kind.set
let get_current_quorum ctxt =
Storage.Vote.Participation_ema.get ctxt
>>=? fun participation_ema ->
let quorum_min = Constants_storage.quorum_min ctxt in
let quorum_max = Constants_storage.quorum_max ctxt in
let quorum_diff = Int32.sub quorum_max quorum_min in
return
Int32.(add quorum_min (div (mul participation_ema quorum_diff) 100_00l))
let get_participation_ema = Storage.Vote.Participation_ema.get
let set_participation_ema = Storage.Vote.Participation_ema.set
let get_current_proposal = Storage.Vote.Current_proposal.get
let init_current_proposal = Storage.Vote.Current_proposal.init
let clear_current_proposal = Storage.Vote.Current_proposal.delete
let init ctxt =
(* participation EMA is in centile of a percentage *)
let participation_ema = Constants_storage.quorum_max ctxt in
Storage.Vote.Participation_ema.init ctxt participation_ema
>>=? fun ctxt ->
Storage.Vote.Current_period_kind.init ctxt Proposal
>>=? fun ctxt -> return ctxt