Parachains finality relay (#1199)

bridges/relays/bin-substrate/src/chains/mod.rs

@@ -24,6 +24,7 @@ pub mod polkadot_headers_to_kusama;
 pub mod polkadot_messages_to_kusama;
 pub mod rialto_headers_to_millau;
 pub mod rialto_messages_to_millau;
+pub mod rialto_parachains_to_millau;
 pub mod rococo_headers_to_wococo;
 pub mod rococo_messages_to_wococo;
 pub mod westend_headers_to_millau;

bridges/relays/bin-substrate/src/chains/rialto_parachains_to_millau.rs

@@ -0,0 +1,39 @@
+// 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/>.
+
+//! Rialto-to-Millau parachains sync entrypoint.
+
+use parachains_relay::ParachainsPipeline;
+use relay_millau_client::Millau;
+use relay_rialto_client::Rialto;
+use substrate_relay_helper::parachains_target::DirectSubmitParachainHeadsCallBuilder;
+
+/// Rialto-to-Millau parachains sync description.
+#[derive(Clone, Debug)]
+pub struct RialtoToMillauParachains;
+
+impl ParachainsPipeline for RialtoToMillauParachains {
+	type SourceChain = Rialto;
+	type TargetChain = Millau;
+}
+
+/// `submit_parachain_heads` call builder for Rialto-to-Millau parachains sync pipeline.
+pub type RialtoToMillauParachainsSubmitParachainHeadsCallBuilder =
+	DirectSubmitParachainHeadsCallBuilder<
+		RialtoToMillauParachains,
+		millau_runtime::Runtime,
+		millau_runtime::WitRialtoParachainsInstance,
+	>;