// 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 .
//! The library of substrate relay. contains some public codes to provide to substrate relay.
#![warn(missing_docs)]
use std::time::Duration;
pub mod conversion_rate_update;
pub mod error;
pub mod finality;
pub mod helpers;
pub mod messages_lane;
pub mod messages_metrics;
pub mod messages_source;
pub mod messages_target;
pub mod on_demand;
pub mod parachains;
/// Default relay loop stall timeout. If transactions generated by relay are immortal, then
/// this timeout is used.
///
/// There are no any strict requirements on block time in Substrate. But we assume here that all
/// Substrate-based chains will be designed to produce relatively fast (compared to the slowest
/// blockchains) blocks. So 1 hour seems to be a good guess for (even congested) chains to mine
/// transaction, or remove it from the pool.
pub const STALL_TIMEOUT: Duration = Duration::from_secs(60 * 60);
/// Transaction creation parameters.
#[derive(Clone, Debug)]
pub struct TransactionParams {
/// Transactions author.
pub signer: TS,
/// Transactions mortality.
pub mortality: Option,
}
/// Tagged relay account, which balance may be exposed as metrics by the relay.
#[derive(Clone, Debug)]
pub enum TaggedAccount {
/// Account, used to sign headers relay transactions from given bridged chain.
Headers {
/// Account id.
id: AccountId,
/// Name of the bridged chain, which headers are relayed.
bridged_chain: String,
},
/// Account, used to sign parachains relay transactions from given bridged relay chain.
Parachains {
/// Account id.
id: AccountId,
/// Name of the bridged relay chain with parachain heads.
bridged_chain: String,
},
/// Account, used to sign message relay transactions from given bridged chain.
Messages {
/// Account id.
id: AccountId,
/// Name of the bridged chain, which sends us messages or delivery confirmations.
bridged_chain: String,
},
/// Account, used to sign messages with-bridged-chain pallet parameters update transactions.
MessagesPalletOwner {
/// Account id.
id: AccountId,
/// Name of the chain, bridged using messages pallet at our chain.
bridged_chain: String,
},
}
impl TaggedAccount {
/// Returns reference to the account id.
pub fn id(&self) -> &AccountId {
match *self {
TaggedAccount::Headers { ref id, .. } => id,
TaggedAccount::Parachains { ref id, .. } => id,
TaggedAccount::Messages { ref id, .. } => id,
TaggedAccount::MessagesPalletOwner { ref id, .. } => id,
}
}
/// Returns stringified account tag.
pub fn tag(&self) -> String {
match *self {
TaggedAccount::Headers { ref bridged_chain, .. } => format!("{}Headers", bridged_chain),
TaggedAccount::Parachains { ref bridged_chain, .. } => {
format!("{}Parachains", bridged_chain)
},
TaggedAccount::Messages { ref bridged_chain, .. } => {
format!("{}Messages", bridged_chain)
},
TaggedAccount::MessagesPalletOwner { ref bridged_chain, .. } => {
format!("{}MessagesPalletOwner", bridged_chain)
},
}
}
}