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Message router for LCMP & XCMP (#141)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // This file is part of Darwinia. | ||
| // | ||
| // Copyright (C) 2018-2022 Darwinia Network | ||
| // SPDX-License-Identifier: GPL-3.0 | ||
| // | ||
| // Darwinia 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. | ||
| // | ||
| // Darwinia 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 Darwinia. If not, see <https://www.gnu.org/licenses/>. | ||
|
|
||
| //! Various implementations for `ShouldExecute`. | ||
|
|
||
| use frame_support::{ensure, log, traits::Contains, weights::Weight}; | ||
| use sp_std::{marker::PhantomData, result::Result}; | ||
| use xcm::latest::{Instruction::*, MultiLocation, WeightLimit::*, Xcm}; | ||
| use xcm_executor::traits::ShouldExecute; | ||
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| /// Allows execution from `origin` if it is contained in `T` (i.e. `T::Contains(origin)`) taking | ||
| /// payments into account. | ||
| /// | ||
| /// Only allows for `TeleportAsset`, `WithdrawAsset`, `ClaimAsset` and `ReserveAssetDeposit` XCMs | ||
| /// because they are the only ones that place assets in the Holding Register to pay for execution. | ||
| /// Copy from https://github.com/paritytech/polkadot/blob/release-v0.9.26/xcm/xcm-builder/src/barriers.rs#L53 | ||
| /// Allow `DescendOrigin` as the first instruction to specify the payment account | ||
| pub struct AllowDescendOriginPaidExecutionFrom<T>(PhantomData<T>); | ||
| impl<T: Contains<MultiLocation>> ShouldExecute for AllowDescendOriginPaidExecutionFrom<T> { | ||
| fn should_execute<Call>( | ||
| origin: &MultiLocation, | ||
| message: &mut Xcm<Call>, | ||
| max_weight: Weight, | ||
| _weight_credit: &mut Weight, | ||
| ) -> Result<(), ()> { | ||
| log::trace!( | ||
| target: "xcm::barriers", | ||
| "AllowDescendOriginPaidExecutionFrom origin: {:?}, message: {:?}, max_weight: {:?}, weight_credit: {:?}", | ||
| origin, message, max_weight, _weight_credit, | ||
| ); | ||
| ensure!(T::contains(origin), ()); | ||
| let mut iter = message.0.iter_mut(); | ||
| let i = iter.next().ok_or(())?; | ||
| // Modified: Only allows `DescendOrigin` as the first instruction | ||
| match i { | ||
| DescendOrigin(_) => (), | ||
| _ => return Err(()), | ||
| } | ||
| let i = iter.next().ok_or(())?; | ||
| match i { | ||
| ReceiveTeleportedAsset(..) | ||
| | WithdrawAsset(..) | ||
| | ReserveAssetDeposited(..) | ||
| | ClaimAsset { .. } => (), | ||
| _ => return Err(()), | ||
| } | ||
| let mut i = iter.next().ok_or(())?; | ||
| while let ClearOrigin = i { | ||
| i = iter.next().ok_or(())?; | ||
| } | ||
| match i { | ||
| BuyExecution { weight_limit: Limited(ref mut weight), .. } if *weight >= max_weight => { | ||
| *weight = max_weight; | ||
| Ok(()) | ||
| }, | ||
| BuyExecution { ref mut weight_limit, .. } if weight_limit == &Unlimited => { | ||
| *weight_limit = Limited(max_weight); | ||
| Ok(()) | ||
| }, | ||
| _ => Err(()), | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| // This file is part of Darwinia. | ||
| // | ||
| // Copyright (C) 2018-2022 Darwinia Network | ||
| // SPDX-License-Identifier: GPL-3.0 | ||
| // | ||
| // Darwinia 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. | ||
| // | ||
| // Darwinia 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 Darwinia. If not, see <https://www.gnu.org/licenses/>. | ||
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| #![cfg(feature = "runtime-benchmarks")] | ||
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| // --- paritytech --- | ||
| use frame_benchmarking::{account, benchmarks}; | ||
| use frame_support::{assert_ok, traits::Get}; | ||
| use frame_system::RawOrigin; | ||
| use sp_std::{boxed::Box, vec}; | ||
| use xcm::{latest::prelude::*, VersionedXcm::V2}; | ||
| // --- darwinia --- | ||
| use crate::message_router::{Call, Config, Pallet}; | ||
| use dc_primitives::COIN; | ||
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| benchmarks! { | ||
| set_target_xcm_exec_config { | ||
| let target_location = T::MoonbeamLocation::get(); | ||
| let local_asset_units_per_second: u128 = 14719736222326895902025_u128; | ||
| }:_(RawOrigin::Root, target_location.clone(), local_asset_units_per_second) | ||
| verify { | ||
| assert_eq!(Pallet::<T>::target_xcm_exec_config(target_location), Some(local_asset_units_per_second)); | ||
| } | ||
|
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| forward_to_moonbeam { | ||
| let target_location = T::MoonbeamLocation::get(); | ||
| let local_asset_units_per_second: u128 = 14719736222326895902025_u128; | ||
| assert_ok!(Pallet::<T>::set_target_xcm_exec_config(RawOrigin::Root.into(), target_location.clone(), local_asset_units_per_second)); | ||
| let xcm = Xcm(vec![ | ||
| DescendOrigin(X1(AccountKey20 { | ||
| network: Any, | ||
| key: [0u8;20].into() | ||
| })), | ||
| ]); | ||
| }:_(RawOrigin::Root, Box::new(V2(xcm))) | ||
| } |
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