Rococo (mocky)Runtime and Client (#841)

* Implement fake rococo runtime. * Generate correct storage key. * cargo fmt --all * Move client-rococo. * Satisfy clippy. * Apply suggestions from code review Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * Address review comments. * Clippy again. Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
2026-06-12 19:21:13 +00:00 · 2021-03-25 23:12:02 +01:00
parent 60c1c24784
commit 51fc83941b
6 changed files with 309 additions and 2 deletions
@@ -0,0 +1,116 @@
+// 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 Rococo-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;
+
+/// Rococo header id.
+pub type HeaderId = relay_utils::HeaderId<bp_rococo::Hash, bp_rococo::BlockNumber>;
+
+/// Rococo chain definition
+#[derive(Debug, Clone, Copy)]
+pub struct Rococo;
+
+impl ChainBase for Rococo {
+	type BlockNumber = bp_rococo::BlockNumber;
+	type Hash = bp_rococo::Hash;
+	type Hasher = bp_rococo::Hashing;
+	type Header = bp_rococo::Header;
+}
+
+impl Chain for Rococo {
+	const NAME: &'static str = "Rococo";
+	const AVERAGE_BLOCK_INTERVAL: Duration = Duration::from_secs(6);
+
+	type AccountId = bp_rococo::AccountId;
+	type Index = bp_rococo::Index;
+	type SignedBlock = bp_rococo::SignedBlock;
+	type Call = bp_rococo::Call;
+}
+
+impl ChainWithBalances for Rococo {
+	type NativeBalance = bp_rococo::Balance;
+
+	fn account_info_storage_key(account_id: &Self::AccountId) -> StorageKey {
+		StorageKey(bp_rococo::account_info_storage_key(account_id))
+	}
+}
+
+impl TransactionSignScheme for Rococo {
+	type Chain = Rococo;
+	type AccountKeyPair = sp_core::sr25519::Pair;
+	type SignedTransaction = bp_rococo::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_rococo::SignedExtensions::new(
+				bp_rococo::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_rococo::UncheckedExtrinsic::new_signed(call, signer.into_account(), signature.into(), extra)
+	}
+}
+
+/// Rococo signing params.
+#[derive(Clone)]
+pub struct SigningParams {
+	/// Substrate transactions signer.
+	pub signer: sp_core::sr25519::Pair,
+}
+
+impl SigningParams {
+	/// Create signing params from SURI and password.
+	pub fn from_suri(suri: &str, password: Option<&str>) -> Result<Self, sp_core::crypto::SecretStringError> {
+		Ok(SigningParams {
+			signer: sp_core::sr25519::Pair::from_string(suri, password)?,
+		})
+	}
+}
+
+impl std::fmt::Debug for SigningParams {
+	fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+		write!(f, "{}", self.signer.public())
+	}
+}
+
+impl Default for SigningParams {
+	fn default() -> Self {
+		SigningParams {
+			signer: sp_keyring::AccountKeyring::Alice.pair(),
+		}
+	}
+}
+
+/// Rococo header type used in headers sync.
+pub type SyncHeader = relay_substrate_client::SyncHeader<bp_rococo::Header>;