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Backport xcm bridging extensions to the bridge repo (paritytech#1813)
* Backport xcm bridging extensions to the bridge repo * Fixes * Fixes
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bridges/bin/runtime-common/src/messages_xcm_extension.rs
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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")) | ||
} | ||
} |