`6f5be65656d0`

source

runtime/common/config/xcm/foreignassets.rs6.1 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::{18	traits::{Contains, Get, fungibles},19	parameter_types,20};21use sp_runtime::traits::Convert;22use xcm::latest::{MultiAsset, Junction::*, MultiLocation, Junctions::*};23use xcm_builder::{FungiblesAdapter, ConvertedConcreteAssetId};24use xcm_executor::traits::{Convert as ConvertXcm, JustTry, FilterAssetLocation};25use pallet_foreign_assets::{26	AssetIds, AssetIdMapping, XcmForeignAssetIdMapping, NativeCurrency, FreeForAll, TryAsForeign,27	ForeignAssetId, CurrencyId,28};29use sp_std::{borrow::Borrow, marker::PhantomData};30use crate::{Runtime, Balances, ParachainInfo, PolkadotXcm, ForeignAssets};3132use super::{LocationToAccountId, RelayLocation};3334use up_common::types::{AccountId, Balance};3536parameter_types! {37	pub CheckingAccount: AccountId = PolkadotXcm::check_account();38}3940/// No teleports are allowed41pub struct NoTeleports<AccountId, ForeignAssets>(PhantomData<(AccountId, ForeignAssets)>);4243impl<AccountId, ForeignAssets> Contains<<ForeignAssets as fungibles::Inspect<AccountId>>::AssetId>44	for NoTeleports<AccountId, ForeignAssets>45where46	ForeignAssets: fungibles::Inspect<AccountId>,47{48	fn contains(_id: &<ForeignAssets as fungibles::Inspect<AccountId>>::AssetId) -> bool {49		false50	}51}5253pub struct AsInnerId<AssetId, ConvertAssetId>(PhantomData<(AssetId, ConvertAssetId)>);54impl<AssetId: Clone + PartialEq, ConvertAssetId: ConvertXcm<AssetId, AssetId>>55	ConvertXcm<MultiLocation, AssetId> for AsInnerId<AssetId, ConvertAssetId>56where57	AssetId: Borrow<AssetId>,58	AssetId: TryAsForeign<AssetId, ForeignAssetId>,59	AssetIds: Borrow<AssetId>,60{61	fn convert_ref(id: impl Borrow<MultiLocation>) -> Result<AssetId, ()> {62		let id = id.borrow();6364		log::trace!(65			target: "xcm::AsInnerId::Convert",66			"AsInnerId {:?}",67			id68		);6970		let parent = MultiLocation::parent();71		let here = MultiLocation::here();72		let self_location = MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())));7374		if *id == parent {75			return ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Parent));76		}7778		if *id == here || *id == self_location {79			return ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Here));80		}8182		match XcmForeignAssetIdMapping::<Runtime>::get_currency_id(id.clone()) {83			Some(AssetIds::ForeignAssetId(foreign_asset_id)) => {84				ConvertAssetId::convert_ref(AssetIds::ForeignAssetId(foreign_asset_id))85			}86			_ => Err(()),87		}88	}8990	fn reverse_ref(what: impl Borrow<AssetId>) -> Result<MultiLocation, ()> {91		log::trace!(92			target: "xcm::AsInnerId::Reverse",93			"AsInnerId",94		);9596		let asset_id = what.borrow();9798		let parent_id =99			ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Parent)).unwrap();100		let here_id =101			ConvertAssetId::convert_ref(AssetIds::NativeAssetId(NativeCurrency::Here)).unwrap();102103		if asset_id.clone() == parent_id {104			return Ok(MultiLocation::parent());105		}106107		if asset_id.clone() == here_id {108			return Ok(MultiLocation::new(109				1,110				X1(Parachain(ParachainInfo::get().into())),111			));112		}113114		match <AssetId as TryAsForeign<AssetId, ForeignAssetId>>::try_as_foreign(asset_id.clone()) {115			Some(fid) => match XcmForeignAssetIdMapping::<Runtime>::get_multi_location(fid) {116				Some(location) => Ok(location),117				None => Err(()),118			},119			None => Err(()),120		}121	}122}123124/// Means for transacting assets besides the native currency on this chain.125pub type FungiblesTransactor = FungiblesAdapter<126	// Use this fungibles implementation:127	ForeignAssets,128	// Use this currency when it is a fungible asset matching the given location or name:129	ConvertedConcreteAssetId<AssetIds, Balance, AsInnerId<AssetIds, JustTry>, JustTry>,130	// Convert an XCM MultiLocation into a local account id:131	LocationToAccountId,132	// Our chain's account ID type (we can't get away without mentioning it explicitly):133	AccountId,134	// No teleports are allowed135	NoTeleports<AccountId, ForeignAssets>,136	// The account to use for tracking teleports.137	CheckingAccount,138>;139140/// Means for transacting assets on this chain.141pub type AssetTransactors = FungiblesTransactor;142143pub struct AllAsset;144impl FilterAssetLocation for AllAsset {145	fn filter_asset_location(_asset: &MultiAsset, _origin: &MultiLocation) -> bool {146		true147	}148}149150pub type IsReserve = AllAsset;151152pub type Trader<T> = FreeForAll<153	pallet_configuration::WeightToFee<T, Balance>,154	RelayLocation,155	AccountId,156	Balances,157	(),158>;159160pub struct CurrencyIdConvert;161impl Convert<AssetIds, Option<MultiLocation>> for CurrencyIdConvert {162	fn convert(id: AssetIds) -> Option<MultiLocation> {163		match id {164			AssetIds::NativeAssetId(NativeCurrency::Here) => Some(MultiLocation::new(165				1,166				X1(Parachain(ParachainInfo::get().into())),167			)),168			AssetIds::NativeAssetId(NativeCurrency::Parent) => Some(MultiLocation::parent()),169			AssetIds::ForeignAssetId(foreign_asset_id) => {170				XcmForeignAssetIdMapping::<Runtime>::get_multi_location(foreign_asset_id)171			}172		}173	}174}175176impl Convert<MultiLocation, Option<CurrencyId>> for CurrencyIdConvert {177	fn convert(location: MultiLocation) -> Option<CurrencyId> {178		if location == MultiLocation::here()179			|| location == MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())))180		{181			return Some(AssetIds::NativeAssetId(NativeCurrency::Here));182		}183184		if location == MultiLocation::parent() {185			return Some(AssetIds::NativeAssetId(NativeCurrency::Parent));186		}187188		if let Some(currency_id) =189			XcmForeignAssetIdMapping::<Runtime>::get_currency_id(location.clone())190		{191			return Some(currency_id);192		}193194		None195	}196}