// Copyright 2019-2022 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 .
use async_trait::async_trait;
use std::sync::Arc;
use crate::cli::{
bridge::{CliBridgeBase, MessagesCliBridge, ParachainToRelayHeadersCliBridge},
relay_headers_and_messages::{Full2WayBridgeBase, Full2WayBridgeCommonParams},
CliChain,
};
use bp_polkadot_core::parachains::ParaHash;
use pallet_bridge_parachains::{RelayBlockHash, RelayBlockHasher, RelayBlockNumber};
use relay_substrate_client::{
AccountIdOf, AccountKeyPairOf, Chain, ChainWithTransactions, Client, Parachain,
};
use sp_core::Pair;
use substrate_relay_helper::{
finality::SubstrateFinalitySyncPipeline,
on_demand::{
headers::OnDemandHeadersRelay, parachains::OnDemandParachainsRelay, OnDemandRelay,
},
TaggedAccount, TransactionParams,
};
/// A base relay between two parachain from different consensus systems.
///
/// Such relay starts 2 messages relay. It also starts 2 on-demand header relays and 2 on-demand
/// parachain heads relay.
pub struct ParachainToParachainBridge<
L2R: MessagesCliBridge + ParachainToRelayHeadersCliBridge,
R2L: MessagesCliBridge + ParachainToRelayHeadersCliBridge,
> where
::Source: Parachain,
::Source: Parachain,
{
/// Parameters that are shared by all bridge types.
pub common:
Full2WayBridgeCommonParams<::Target, ::Target>,
/// Client of the left relay chain.
pub left_relay: Client<::SourceRelay>,
/// Client of the right relay chain.
pub right_relay: Client<::SourceRelay>,
/// Override for right_relay->left headers signer.
pub right_headers_to_left_transaction_params:
TransactionParams::Target>>,
/// Override for left_relay->right headers signer.
pub left_headers_to_right_transaction_params:
TransactionParams::Target>>,
/// Override for right->left parachains signer.
pub right_parachains_to_left_transaction_params:
TransactionParams::Target>>,
/// Override for left->right parachains signer.
pub left_parachains_to_right_transaction_params:
TransactionParams::Target>>,
}
macro_rules! declare_parachain_to_parachain_bridge_schema {
// left-parachain, relay-chain-of-left-parachain, right-parachain, relay-chain-of-right-parachain
($left_parachain:ident, $left_chain:ident, $right_parachain:ident, $right_chain:ident) => {
bp_runtime::paste::item! {
#[doc = $left_parachain ", " $left_chain ", " $right_parachain " and " $right_chain " headers+parachains+messages relay params."]
#[derive(Debug, PartialEq, StructOpt)]
pub struct [<$left_parachain $right_parachain HeadersAndMessages>] {
// shared parameters
#[structopt(flatten)]
shared: HeadersAndMessagesSharedParams,
#[structopt(flatten)]
left: [<$left_parachain ConnectionParams>],
#[structopt(flatten)]
left_relay: [<$left_chain ConnectionParams>],
// default signer, which is always used to sign messages relay transactions on the left chain
#[structopt(flatten)]
left_sign: [<$left_parachain SigningParams>],
#[structopt(flatten)]
right: [<$right_parachain ConnectionParams>],
#[structopt(flatten)]
right_relay: [<$right_chain ConnectionParams>],
// default signer, which is always used to sign messages relay transactions on the right chain
#[structopt(flatten)]
right_sign: [<$right_parachain SigningParams>],
// override for right_relay->left-parachain headers signer
#[structopt(flatten)]
right_relay_headers_to_left_sign_override: [<$right_chain HeadersTo $left_parachain SigningParams>],
// override for left_relay->right-parachain headers signer
#[structopt(flatten)]
left_relay_headers_to_right_sign_override: [<$left_chain HeadersTo $right_parachain SigningParams>],
// override for right->left parachains signer
#[structopt(flatten)]
right_parachains_to_left_sign_override: [<$right_chain ParachainsTo $left_parachain SigningParams>],
// override for left->right parachains signer
#[structopt(flatten)]
left_parachains_to_right_sign_override: [<$left_chain ParachainsTo $right_parachain SigningParams>],
}
impl [<$left_parachain $right_parachain HeadersAndMessages>] {
async fn into_bridge<
Left: ChainWithTransactions + CliChain + Parachain,
LeftRelay: CliChain,
Right: ChainWithTransactions + CliChain + Parachain,
RightRelay: CliChain,
L2R: CliBridgeBase