mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-31 06:21:02 +00:00
Serban Iorga
682fafdf56
* Make RelayStrategy::final_decision() sync Signed-off-by: Serban Iorga <serban@parity.io> * Move logic from RelayStrategy to RelayReference Signed-off-by: Serban Iorga <serban@parity.io> * Rename RelayStrategy::final_decision() Signed-off-by: Serban Iorga <serban@parity.io>
76 lines
2.2 KiB
Rust
76 lines
2.2 KiB
Rust
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity Bridges Common.
|
|
|
|
// Parity Bridges Common 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 Bridges Common 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 Bridges Common. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Rational relay strategy
|
|
|
|
use async_trait::async_trait;
|
|
|
|
use crate::{
|
|
message_lane::MessageLane,
|
|
message_lane_loop::{
|
|
SourceClient as MessageLaneSourceClient, TargetClient as MessageLaneTargetClient,
|
|
},
|
|
relay_strategy::{RelayReference, RelayStrategy},
|
|
};
|
|
|
|
/// The relayer will deliver all messages and confirmations as long as he's not losing any
|
|
/// funds.
|
|
#[derive(Clone)]
|
|
pub struct RationalStrategy;
|
|
|
|
#[async_trait]
|
|
impl RelayStrategy for RationalStrategy {
|
|
async fn decide<
|
|
P: MessageLane,
|
|
SourceClient: MessageLaneSourceClient<P>,
|
|
TargetClient: MessageLaneTargetClient<P>,
|
|
>(
|
|
&mut self,
|
|
reference: &mut RelayReference<P, SourceClient, TargetClient>,
|
|
) -> bool {
|
|
if let Err(e) = reference.update_cost_and_reward().await {
|
|
log::debug!(
|
|
target: "bridge",
|
|
"Failed to update transaction cost and reward: {:?}. No nonces selected for delivery",
|
|
e,
|
|
);
|
|
|
|
return false
|
|
}
|
|
|
|
// Rational relayer never wants to lose his funds.
|
|
if reference.is_profitable() {
|
|
reference.selected_reward = reference.total_reward;
|
|
reference.selected_cost = reference.total_cost;
|
|
return true
|
|
}
|
|
|
|
false
|
|
}
|
|
|
|
fn on_final_decision<
|
|
P: MessageLane,
|
|
SourceClient: MessageLaneSourceClient<P>,
|
|
TargetClient: MessageLaneTargetClient<P>,
|
|
>(
|
|
&self,
|
|
_reference: &RelayReference<P, SourceClient, TargetClient>,
|
|
) {
|
|
// rational relayer would never submit unprofitable transactions, so we don't need to do
|
|
// anything here
|
|
}
|
|
}
|