Add Wococo<>Rococo Header Relayer (#925)

* Add Wococo primitives crate * Add more Wococo boilerplate code * Add CLI support for initializing the Wococo<>Rococo bridge * Add support for relaying headers between Rococo and Wococo * Fix test * RustFmt * Fix compilation issues related to enum naming * Bump Rococo `spec_version` * Remove stray Westend references
2026-05-30 22:11:02 +00:00 · 2021-04-29 11:24:30 -04:00
parent 76625ed180
commit 7dc564a067
14 changed files with 602 additions and 8 deletions
@@ -0,0 +1,97 @@
+// 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/>.
+
+//! Types used to connect to the Wococo-Substrate chain.
+
+use codec::Encode;
+use relay_substrate_client::{Chain, ChainBase, ChainWithBalances, TransactionSignScheme};
+use sp_core::{storage::StorageKey, Pair};
+use sp_runtime::{generic::SignedPayload, traits::IdentifyAccount};
+use std::time::Duration;
+
+/// Wococo header id.
+pub type HeaderId = relay_utils::HeaderId<bp_wococo::Hash, bp_wococo::BlockNumber>;
+
+/// Wococo header type used in headers sync.
+pub type SyncHeader = relay_substrate_client::SyncHeader<bp_wococo::Header>;
+
+/// Wococo chain definition
+#[derive(Debug, Clone, Copy)]
+pub struct Wococo;
+
+impl ChainBase for Wococo {
+	type BlockNumber = bp_wococo::BlockNumber;
+	type Hash = bp_wococo::Hash;
+	type Hasher = bp_wococo::Hashing;
+	type Header = bp_wococo::Header;
+}
+
+impl Chain for Wococo {
+	const NAME: &'static str = "Wococo";
+	const AVERAGE_BLOCK_INTERVAL: Duration = Duration::from_secs(6);
+
+	type AccountId = bp_wococo::AccountId;
+	type Index = bp_wococo::Index;
+	type SignedBlock = bp_wococo::SignedBlock;
+	type Call = bp_wococo::Call;
+}
+
+impl ChainWithBalances for Wococo {
+	type NativeBalance = bp_wococo::Balance;
+
+	fn account_info_storage_key(account_id: &Self::AccountId) -> StorageKey {
+		StorageKey(bp_wococo::account_info_storage_key(account_id))
+	}
+}
+
+impl TransactionSignScheme for Wococo {
+	type Chain = Wococo;
+	type AccountKeyPair = sp_core::sr25519::Pair;
+	type SignedTransaction = bp_wococo::UncheckedExtrinsic;
+
+	fn sign_transaction(
+		genesis_hash: <Self::Chain as ChainBase>::Hash,
+		signer: &Self::AccountKeyPair,
+		signer_nonce: <Self::Chain as Chain>::Index,
+		call: <Self::Chain as Chain>::Call,
+	) -> Self::SignedTransaction {
+		let raw_payload = SignedPayload::new(
+			call,
+			bp_wococo::SignedExtensions::new(
+				bp_wococo::VERSION,
+				sp_runtime::generic::Era::Immortal,
+				genesis_hash,
+				signer_nonce,
+				0,
+			),
+		)
+		.expect("SignedExtension never fails.");
+
+		let signature = raw_payload.using_encoded(|payload| signer.sign(payload));
+		let signer: sp_runtime::MultiSigner = signer.public().into();
+		let (call, extra, _) = raw_payload.deconstruct();
+
+		bp_wococo::UncheckedExtrinsic::new_signed(
+			call,
+			sp_runtime::MultiAddress::Id(signer.into_account()),
+			signature.into(),
+			extra,
+		)
+	}
+}
+
+/// Wococo signing params.
+pub type SigningParams = sp_core::sr25519::Pair;