Polkadot <> Kusama relayers (#1122)

* relay headers between Kusama and Polkadot * relay messages between Kusama and Polkadot * complex Kusama <> Polkadot relayer * expose relayer_fund_account_id from messages pallet * create relayers fund accounts on Kusama/Polkadot + some more fixes * fmt * fix compilation * compilation + clippy * compilation * MAXIMAL_BALANCE_DECREASE_PER_DAY for K<>P header relays * fmt * deduplicate tests * Update modules/messages/src/lib.rs Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com> * extract storage_parameter_key function * other grumbles * fix * fmt Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
2026-05-30 18:41:03 +00:00 · 2021-09-21 16:53:37 +03:00
parent 417903f9e7
commit 2db84b74cc
31 changed files with 1936 additions and 68 deletions
@@ -0,0 +1,101 @@
+// 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/>.
+
+use codec::Decode;
+use frame_support::weights::{DispatchClass, DispatchInfo, Pays, Weight};
+use relay_kusama_client::Kusama;
+use sp_version::RuntimeVersion;
+
+use crate::cli::{
+	bridge,
+	encode_call::{Call, CliEncodeCall},
+	encode_message, CliChain,
+};
+
+/// Weight of the `system::remark` call at Kusama.
+///
+/// This weight is larger (x2) than actual weight at current Kusama runtime to avoid unsuccessful
+/// calls in the future. But since it is used only in tests (and on test chains), this is ok.
+pub(crate) const SYSTEM_REMARK_CALL_WEIGHT: Weight = 2 * 1_345_000;
+
+/// Id of Kusama token that is used to fetch token price.
+pub(crate) const TOKEN_ID: &str = "kusama";
+
+impl CliEncodeCall for Kusama {
+	fn max_extrinsic_size() -> u32 {
+		bp_kusama::max_extrinsic_size()
+	}
+
+	fn encode_call(call: &Call) -> anyhow::Result<Self::Call> {
+		Ok(match call {
+			Call::Remark { remark_payload, .. } => {
+				relay_kusama_client::runtime::Call::System(relay_kusama_client::runtime::SystemCall::remark(
+					remark_payload.as_ref().map(|x| x.0.clone()).unwrap_or_default(),
+				))
+			}
+			Call::BridgeSendMessage {
+				lane,
+				payload,
+				fee,
+				bridge_instance_index,
+			} => match *bridge_instance_index {
+				bridge::KUSAMA_TO_POLKADOT_INDEX => {
+					let payload = Decode::decode(&mut &*payload.0)?;
+					relay_kusama_client::runtime::Call::BridgePolkadotMessages(
+						relay_kusama_client::runtime::BridgePolkadotMessagesCall::send_message(lane.0, payload, fee.0),
+					)
+				}
+				_ => anyhow::bail!(
+					"Unsupported target bridge pallet with instance index: {}",
+					bridge_instance_index
+				),
+			},
+			_ => anyhow::bail!("Unsupported Kusama call: {:?}", call),
+		})
+	}
+
+	fn get_dispatch_info(call: &relay_kusama_client::runtime::Call) -> anyhow::Result<DispatchInfo> {
+		match *call {
+			relay_kusama_client::runtime::Call::System(relay_kusama_client::runtime::SystemCall::remark(_)) => {
+				Ok(DispatchInfo {
+					weight: crate::chains::kusama::SYSTEM_REMARK_CALL_WEIGHT,
+					class: DispatchClass::Normal,
+					pays_fee: Pays::Yes,
+				})
+			}
+			_ => anyhow::bail!("Unsupported Kusama call: {:?}", call),
+		}
+	}
+}
+
+impl CliChain for Kusama {
+	const RUNTIME_VERSION: RuntimeVersion = bp_kusama::VERSION;
+
+	type KeyPair = sp_core::sr25519::Pair;
+	type MessagePayload = ();
+
+	fn ss58_format() -> u16 {
+		42
+	}
+
+	fn max_extrinsic_weight() -> Weight {
+		bp_kusama::max_extrinsic_weight()
+	}
+
+	fn encode_message(_message: encode_message::MessagePayload) -> Result<Self::MessagePayload, String> {
+		Err("Sending messages from Kusama is not yet supported.".into())
+	}
+}