openethereum/ethcore/src/engines/tendermint/params.rs

97 lines
2.8 KiB
Rust

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Tendermint specific parameters.
use ethjson;
use util::{U256, Uint, Address};
use time::Duration;
use super::super::validator_set::{ValidatorSet, new_validator_set};
use super::super::transition::Timeouts;
use super::Step;
/// `Tendermint` params.
pub struct TendermintParams {
/// Gas limit divisor.
pub gas_limit_bound_divisor: U256,
/// List of validators.
pub validators: Box<ValidatorSet>,
/// Timeout durations for different steps.
pub timeouts: TendermintTimeouts,
/// Block reward.
pub block_reward: U256,
/// Namereg contract address.
pub registrar: Address,
}
/// Base timeout of each step in ms.
#[derive(Debug, Clone)]
pub struct TendermintTimeouts {
pub propose: Duration,
pub prevote: Duration,
pub precommit: Duration,
pub commit: Duration,
}
impl Default for TendermintTimeouts {
fn default() -> Self {
TendermintTimeouts {
propose: Duration::milliseconds(1000),
prevote: Duration::milliseconds(1000),
precommit: Duration::milliseconds(1000),
commit: Duration::milliseconds(1000),
}
}
}
impl Timeouts<Step> for TendermintTimeouts {
fn initial(&self) -> Duration {
self.propose
}
fn timeout(&self, step: &Step) -> Duration {
match *step {
Step::Propose => self.propose,
Step::Prevote => self.prevote,
Step::Precommit => self.precommit,
Step::Commit => self.commit,
}
}
}
fn to_duration(ms: ethjson::uint::Uint) -> Duration {
let ms: usize = ms.into();
Duration::milliseconds(ms as i64)
}
impl From<ethjson::spec::TendermintParams> for TendermintParams {
fn from(p: ethjson::spec::TendermintParams) -> Self {
let dt = TendermintTimeouts::default();
TendermintParams {
gas_limit_bound_divisor: p.gas_limit_bound_divisor.into(),
validators: new_validator_set(p.validators),
timeouts: TendermintTimeouts {
propose: p.timeout_propose.map_or(dt.propose, to_duration),
prevote: p.timeout_prevote.map_or(dt.prevote, to_duration),
precommit: p.timeout_precommit.map_or(dt.precommit, to_duration),
commit: p.timeout_commit.map_or(dt.commit, to_duration),
},
block_reward: p.block_reward.map_or_else(U256::zero, Into::into),
registrar: p.registrar.map_or_else(Address::new, Into::into),
}
}
}