westend_headers_to_millau.rs

// 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/>.

//! Westend-to-Millau headers sync entrypoint.

use crate::cli::bridge::{CliBridgeBase, RelayToRelayHeadersCliBridge};
use substrate_relay_helper::finality::{
	engine::Grandpa as GrandpaFinalityEngine, DirectSubmitGrandpaFinalityProofCallBuilder,
	SubstrateFinalitySyncPipeline,
};

/// Description of Westend -> Millau finalized headers bridge.
#[derive(Clone, Debug)]
pub struct WestendFinalityToMillau;

impl SubstrateFinalitySyncPipeline for WestendFinalityToMillau {
	type SourceChain = relay_westend_client::Westend;
	type TargetChain = relay_millau_client::Millau;

	type FinalityEngine = GrandpaFinalityEngine<Self::SourceChain>;
	type SubmitFinalityProofCallBuilder = DirectSubmitGrandpaFinalityProofCallBuilder<
		Self,
		millau_runtime::Runtime,
		millau_runtime::WestendGrandpaInstance,
	>;
}

//// `Westend` to `Millau` bridge definition.
pub struct WestendToMillauCliBridge {}

impl CliBridgeBase for WestendToMillauCliBridge {
	type Source = relay_westend_client::Westend;
	type Target = relay_millau_client::Millau;
}

impl RelayToRelayHeadersCliBridge for WestendToMillauCliBridge {
	type Finality = WestendFinalityToMillau;
}