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Backport xcm bridging extensions to the bridge repo (#1813)
* Backport xcm bridging extensions to the bridge repo * Fixes * Fixes
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2023 Parity Technologies (UK) Ltd. | ||
| // This file is part of Parity Bridges Common. | ||
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| // 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. | ||
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| // 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. | ||
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| // 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/>. | ||
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| //! Module provides utilities for easier XCM handling, e.g: | ||
| //! [`XcmExecutor`] -> [`MessageSender`] -> <outbound message queue> | ||
| //! | | ||
| //! <relayer> | ||
| //! | | ||
| //! [`XcmRouter`] <- [`MessageDispatch`] <- <inbound message queue> | ||
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| use bp_messages::{ | ||
| source_chain::MessagesBridge, | ||
| target_chain::{DispatchMessage, MessageDispatch}, | ||
| LaneId, | ||
| }; | ||
| use bp_runtime::{messages::MessageDispatchResult, AccountIdOf, Chain}; | ||
| use codec::{Decode, Encode}; | ||
| use frame_support::{dispatch::Weight, traits::Get, CloneNoBound, EqNoBound, PartialEqNoBound}; | ||
| use scale_info::TypeInfo; | ||
| use xcm_builder::{DispatchBlob, DispatchBlobError, HaulBlob, HaulBlobError}; | ||
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| /// Plain "XCM" payload, which we transfer through bridge | ||
| pub type XcmAsPlainPayload = sp_std::prelude::Vec<u8>; | ||
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| /// Message dispatch result type for single message | ||
| #[derive(CloneNoBound, EqNoBound, PartialEqNoBound, Encode, Decode, Debug, TypeInfo)] | ||
| pub enum XcmBlobMessageDispatchResult { | ||
| InvalidPayload, | ||
| Dispatched, | ||
| NotDispatched(#[codec(skip)] &'static str), | ||
| } | ||
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| /// [`XcmBlobMessageDispatch`] is responsible for dispatching received messages | ||
| pub struct XcmBlobMessageDispatch< | ||
| SourceBridgeHubChain, | ||
| TargetBridgeHubChain, | ||
| DispatchBlob, | ||
| DispatchBlobWeigher, | ||
| > { | ||
| _marker: sp_std::marker::PhantomData<( | ||
| SourceBridgeHubChain, | ||
| TargetBridgeHubChain, | ||
| DispatchBlob, | ||
| DispatchBlobWeigher, | ||
| )>, | ||
| } | ||
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| impl< | ||
| SourceBridgeHubChain: Chain, | ||
| TargetBridgeHubChain: Chain, | ||
| BlobDispatcher: DispatchBlob, | ||
| DispatchBlobWeigher: Get<Weight>, | ||
| > MessageDispatch<AccountIdOf<SourceBridgeHubChain>> | ||
| for XcmBlobMessageDispatch< | ||
| SourceBridgeHubChain, | ||
| TargetBridgeHubChain, | ||
| BlobDispatcher, | ||
| DispatchBlobWeigher, | ||
| > | ||
| { | ||
| type DispatchPayload = XcmAsPlainPayload; | ||
| type DispatchLevelResult = XcmBlobMessageDispatchResult; | ||
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| fn dispatch_weight(_message: &mut DispatchMessage<Self::DispatchPayload>) -> Weight { | ||
| DispatchBlobWeigher::get() | ||
| } | ||
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| fn dispatch( | ||
| _relayer_account: &AccountIdOf<SourceBridgeHubChain>, | ||
| message: DispatchMessage<Self::DispatchPayload>, | ||
| ) -> MessageDispatchResult<Self::DispatchLevelResult> { | ||
| let payload = match message.data.payload { | ||
| Ok(payload) => payload, | ||
| Err(e) => { | ||
| log::error!( | ||
| target: crate::LOG_TARGET_BRIDGE_DISPATCH, | ||
| "[XcmBlobMessageDispatch] payload error: {:?} - message_nonce: {:?}", | ||
| e, | ||
| message.key.nonce | ||
| ); | ||
| return MessageDispatchResult { | ||
| // TODO:check-parameter - setup uspent_weight? https://github.com/paritytech/polkadot/issues/6629 | ||
| unspent_weight: Weight::zero(), | ||
| dispatch_level_result: XcmBlobMessageDispatchResult::InvalidPayload, | ||
| } | ||
| }, | ||
| }; | ||
| let dispatch_level_result = match BlobDispatcher::dispatch_blob(payload) { | ||
| Ok(_) => { | ||
| log::debug!( | ||
| target: crate::LOG_TARGET_BRIDGE_DISPATCH, | ||
| "[XcmBlobMessageDispatch] DispatchBlob::dispatch_blob was ok - message_nonce: {:?}", | ||
| message.key.nonce | ||
| ); | ||
| XcmBlobMessageDispatchResult::Dispatched | ||
| }, | ||
| Err(e) => { | ||
| let e = match e { | ||
| DispatchBlobError::Unbridgable => "DispatchBlobError::Unbridgable", | ||
| DispatchBlobError::InvalidEncoding => "DispatchBlobError::InvalidEncoding", | ||
| DispatchBlobError::UnsupportedLocationVersion => | ||
| "DispatchBlobError::UnsupportedLocationVersion", | ||
| DispatchBlobError::UnsupportedXcmVersion => | ||
| "DispatchBlobError::UnsupportedXcmVersion", | ||
| DispatchBlobError::RoutingError => "DispatchBlobError::RoutingError", | ||
| DispatchBlobError::NonUniversalDestination => | ||
| "DispatchBlobError::NonUniversalDestination", | ||
| DispatchBlobError::WrongGlobal => "DispatchBlobError::WrongGlobal", | ||
| }; | ||
| log::error!( | ||
| target: crate::LOG_TARGET_BRIDGE_DISPATCH, | ||
| "[XcmBlobMessageDispatch] DispatchBlob::dispatch_blob failed, error: {:?} - message_nonce: {:?}", | ||
| e, message.key.nonce | ||
| ); | ||
| XcmBlobMessageDispatchResult::NotDispatched(e) | ||
| }, | ||
| }; | ||
| MessageDispatchResult { | ||
| // TODO:check-parameter - setup uspent_weight? https://github.com/paritytech/polkadot/issues/6629 | ||
| unspent_weight: Weight::zero(), | ||
| dispatch_level_result, | ||
| } | ||
| } | ||
| } | ||
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| /// [`XcmBlobHauler`] is responsible for sending messages to the bridge "point-to-point link" from | ||
| /// one side, where on the other it can be dispatched by [`XcmBlobMessageDispatch`]. | ||
| pub trait XcmBlobHauler { | ||
| /// Runtime message sender adapter. | ||
| type MessageSender: MessagesBridge<Self::MessageSenderOrigin, XcmAsPlainPayload>; | ||
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| /// Runtime message sender origin, which is used by [`MessageSender`]. | ||
| type MessageSenderOrigin; | ||
| /// Our location within the Consensus Universe. | ||
| fn message_sender_origin() -> Self::MessageSenderOrigin; | ||
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| /// Return message lane (as "point-to-point link") used to deliver XCM messages. | ||
| fn xcm_lane() -> LaneId; | ||
| } | ||
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| /// XCM bridge adapter which connects [`XcmBlobHauler`] with [`MessageSender`] and makes sure that | ||
| /// XCM blob is sent to the [`pallet_bridge_messages`] queue to be relayed. | ||
| pub struct XcmBlobHaulerAdapter<XcmBlobHauler>(sp_std::marker::PhantomData<XcmBlobHauler>); | ||
| impl<HaulerOrigin, H: XcmBlobHauler<MessageSenderOrigin = HaulerOrigin>> HaulBlob | ||
| for XcmBlobHaulerAdapter<H> | ||
| { | ||
| fn haul_blob(blob: sp_std::prelude::Vec<u8>) -> Result<(), HaulBlobError> { | ||
| let lane = H::xcm_lane(); | ||
| let result = H::MessageSender::send_message(H::message_sender_origin(), lane, blob); | ||
| let result = result | ||
| .map(|artifacts| (lane, artifacts.nonce).using_encoded(sp_io::hashing::blake2_256)); | ||
| match &result { | ||
| Ok(result) => log::info!( | ||
| target: crate::LOG_TARGET_BRIDGE_DISPATCH, | ||
| "haul_blob result - ok: {:?} on lane: {:?}", | ||
| result, | ||
| lane | ||
| ), | ||
| Err(error) => log::error!( | ||
| target: crate::LOG_TARGET_BRIDGE_DISPATCH, | ||
| "haul_blob result - error: {:?} on lane: {:?}", | ||
| error, | ||
| lane | ||
| ), | ||
| }; | ||
| result.map(|_| ()).map_err(|_| HaulBlobError::Transport("MessageSenderError")) | ||
| } | ||
| } |