`5ef5e6b4aa6d`

source

runtime/common/config/xcm/foreignassets.rs6.7 KiBsource history
1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617use frame_support::{traits::Get, parameter_types};18use sp_runtime::traits::Convert;19use xcm::latest::{prelude::*, MultiAsset, MultiLocation};20use xcm_builder::{FungiblesAdapter, NoChecking, ConvertedConcreteId};21use xcm_executor::traits::{TransactAsset, Convert as ConvertXcm, JustTry};22use pallet_foreign_assets::{23	AssetIds, AssetIdMapping, XcmForeignAssetIdMapping, NativeCurrency, FreeForAll, TryAsForeign,24	ForeignAssetId, CurrencyId,25};26use sp_std::{borrow::Borrow, marker::PhantomData};27use orml_traits::location::AbsoluteReserveProvider;28use orml_xcm_support::MultiNativeAsset;29use crate::{Runtime, Balances, ParachainInfo, PolkadotXcm, ForeignAssets};3031use super::{LocationToAccountId, RelayLocation};3233use up_common::types::{AccountId, Balance};3435parameter_types! {36	pub CheckingAccount: AccountId = PolkadotXcm::check_account();37}3839pub struct AsInnerId<AssetId, ConvertAssetId>(PhantomData<(AssetId, ConvertAssetId)>);40impl<AssetId: Clone + PartialEq, ConvertAssetId: ConvertXcm<AssetId, AssetId>>41	ConvertXcm<MultiLocation, AssetId> for AsInnerId<AssetId, ConvertAssetId>42where43	AssetId: Borrow<AssetId>,44	AssetId: TryAsForeign<AssetId, ForeignAssetId>,45	AssetIds: Borrow<AssetId>,46{47	fn convert_ref(id: impl Borrow<MultiLocation>) -> Result<AssetId, ()> {48		let id = id.borrow();4950		log::trace!(51			target: "xcm::AsInnerId::Convert",52			"AsInnerId {:?}",53			id54		);5556		let parent = MultiLocation::parent();57		let here = MultiLocation::here();58		let self_location = MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())));5960		if *id == parent {61			return ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Parent));62		}6364		if *id == here || *id == self_location {65			return ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Here));66		}6768		match XcmForeignAssetIdMapping::<Runtime>::get_currency_id(*id) {69			Some(AssetIds::ForeignAssetId(foreign_asset_id)) => {70				ConvertAssetId::convert_ref(AssetIds::ForeignAssetId(foreign_asset_id))71			}72			_ => Err(()),73		}74	}7576	fn reverse_ref(what: impl Borrow<AssetId>) -> Result<MultiLocation, ()> {77		log::trace!(78			target: "xcm::AsInnerId::Reverse",79			"AsInnerId",80		);8182		let asset_id = what.borrow();8384		let parent_id =85			ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Parent)).unwrap();86		let here_id =87			ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Here)).unwrap();8889		if asset_id.clone() == parent_id {90			return Ok(MultiLocation::parent());91		}9293		if asset_id.clone() == here_id {94			return Ok(MultiLocation::new(95				1,96				X1(Parachain(ParachainInfo::get().into())),97			));98		}99100		match <AssetId as TryAsForeign<AssetId, ForeignAssetId>>::try_as_foreign(asset_id.clone()) {101			Some(fid) => match XcmForeignAssetIdMapping::<Runtime>::get_multi_location(fid) {102				Some(location) => Ok(location),103				None => Err(()),104			},105			None => Err(()),106		}107	}108}109110/// Means for transacting assets besides the native currency on this chain.111pub type FungiblesTransactor = FungiblesAdapter<112	// Use this fungibles implementation:113	ForeignAssets,114	// Use this currency when it is a fungible asset matching the given location or name:115	ConvertedConcreteId<AssetIds, Balance, AsInnerId<AssetIds, JustTry>, JustTry>,116	// Convert an XCM MultiLocation into a local account id:117	LocationToAccountId,118	// Our chain's account ID type (we can't get away without mentioning it explicitly):119	AccountId,120	// No Checking for teleported assets since we disallow teleports at all.121	NoChecking,122	// The account to use for tracking teleports.123	CheckingAccount,124>;125126/// Means for transacting assets on this chain.127pub struct AssetTransactor;128impl TransactAsset for AssetTransactor {129	fn can_check_in(130		_origin: &MultiLocation,131		_what: &MultiAsset,132		_context: &XcmContext,133	) -> XcmResult {134		Err(XcmError::Unimplemented)135	}136137	fn check_in(_origin: &MultiLocation, _what: &MultiAsset, _context: &XcmContext) {}138139	fn can_check_out(140		_dest: &MultiLocation,141		_what: &MultiAsset,142		_context: &XcmContext,143	) -> XcmResult {144		Err(XcmError::Unimplemented)145	}146147	fn check_out(_dest: &MultiLocation, _what: &MultiAsset, _context: &XcmContext) {}148149	fn deposit_asset(what: &MultiAsset, who: &MultiLocation, context: &XcmContext) -> XcmResult {150		FungiblesTransactor::deposit_asset(what, who, context)151	}152153	fn withdraw_asset(154		what: &MultiAsset,155		who: &MultiLocation,156		maybe_context: Option<&XcmContext>,157	) -> Result<xcm_executor::Assets, XcmError> {158		FungiblesTransactor::withdraw_asset(what, who, maybe_context)159	}160161	fn internal_transfer_asset(162		what: &MultiAsset,163		from: &MultiLocation,164		to: &MultiLocation,165		context: &XcmContext,166	) -> Result<xcm_executor::Assets, XcmError> {167		FungiblesTransactor::internal_transfer_asset(what, from, to, context)168	}169}170171pub type IsReserve = MultiNativeAsset<AbsoluteReserveProvider>;172173pub type Trader<T> = FreeForAll<174	pallet_configuration::WeightToFee<T, Balance>,175	RelayLocation,176	AccountId,177	Balances,178	(),179>;180181pub struct CurrencyIdConvert;182impl Convert<AssetIds, Option<MultiLocation>> for CurrencyIdConvert {183	fn convert(id: AssetIds) -> Option<MultiLocation> {184		match id {185			AssetIds::NativeAssetId(NativeCurrency::Here) => Some(MultiLocation::new(186				1,187				X1(Parachain(ParachainInfo::get().into())),188			)),189			AssetIds::NativeAssetId(NativeCurrency::Parent) => Some(MultiLocation::parent()),190			AssetIds::ForeignAssetId(foreign_asset_id) => {191				XcmForeignAssetIdMapping::<Runtime>::get_multi_location(foreign_asset_id)192			}193		}194	}195}196197impl Convert<MultiLocation, Option<CurrencyId>> for CurrencyIdConvert {198	fn convert(location: MultiLocation) -> Option<CurrencyId> {199		if location == MultiLocation::here()200			|| location == MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())))201		{202			return Some(AssetIds::NativeAssetId(NativeCurrency::Here));203		}204205		if location == MultiLocation::parent() {206			return Some(AssetIds::NativeAssetId(NativeCurrency::Parent));207		}208209		if let Some(currency_id) = XcmForeignAssetIdMapping::<Runtime>::get_currency_id(location) {210			return Some(currency_id);211		}212213		None214	}215}