[asset_conversion] adapt paritytech/polkadot-sdk#2031

system-parachains/asset-hubs/asset-hub-kusama/src/lib.rs

@@ -29,7 +29,7 @@ pub mod xcm_config;
 
 use assets_common::{
 	foreign_creators::ForeignCreators,
-	local_and_foreign_assets::{LocalAndForeignAssets, MultiLocationConverter},
+	local_and_foreign_assets::{LocalFromLeft, TargetFromLeft},
 	matching::FromSiblingParachain,
 	AssetIdForTrustBackedAssetsConvert, MultiLocationForAssetId,
 };
@@ -56,8 +56,9 @@ use frame_support::{
 	genesis_builder_helper::{build_config, create_default_config},
 	ord_parameter_types, parameter_types,
 	traits::{
-		AsEnsureOriginWithArg, ConstBool, ConstU128, ConstU32, ConstU64, ConstU8, EitherOfDiverse,
-		Equals, InstanceFilter, TransformOrigin,
+		fungible, fungibles, tokens::imbalance::ResolveAssetTo, AsEnsureOriginWithArg, ConstBool,
+		ConstU128, ConstU32, ConstU64, ConstU8, EitherOfDiverse, Equals, InstanceFilter,
+		TransformOrigin,
 	},
 	weights::{ConstantMultiplier, Weight},
 	BoundedVec, PalletId,
@@ -80,8 +81,9 @@ use system_parachains_constants::{
 };
 use xcm::opaque::v3::MultiLocation;
 use xcm_config::{
-	FellowshipLocation, ForeignAssetsConvertedConcreteId, GovernanceLocation, KsmLocation,
-	PoolAssetsConvertedConcreteId, TrustBackedAssetsConvertedConcreteId,
+	FellowshipLocation, ForeignAssetsConvertedConcreteId, ForeignCreatorsSovereignAccountOf,
+	GovernanceLocation, KsmLocation, PoolAssetsConvertedConcreteId,
+	TrustBackedAssetsConvertedConcreteId, TrustBackedAssetsPalletLocation,
 };
 
 #[cfg(any(feature = "std", test))]
@@ -92,10 +94,6 @@ use pallet_xcm::{EnsureXcm, IsVoiceOfBody};
 use polkadot_runtime_common::{BlockHashCount, SlowAdjustingFeeUpdate};
 use xcm::prelude::*;
 
-use crate::xcm_config::{
-	ForeignCreatorsSovereignAccountOf, LocalAndForeignAssetsMultiLocationMatcher,
-	TrustBackedAssetsPalletLocation,
-};
 use weights::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight};
 
 impl_opaque_keys! {
@@ -293,8 +291,6 @@ impl pallet_assets::Config<TrustBackedAssetsInstance> for Runtime {
 
 parameter_types! {
 	pub const AssetConversionPalletId: PalletId = PalletId(*b"py/ascon");
-	pub const AllowMultiAssetPools: bool = false;
-	// should be non-zero if AllowMultiAssetPools is true, otherwise can be zero
 	pub const LiquidityWithdrawalFee: Permill = Permill::from_percent(0);
 }
 
@@ -329,35 +325,50 @@ impl pallet_assets::Config<PoolAssetsInstance> for Runtime {
 	type BenchmarkHelper = ();
 }
 
+/// Union fungibles implementation for `Assets`` and `ForeignAssets`.
+pub type LocalAndForeignAssets = fungibles::UnionOf<
+	Assets,
+	ForeignAssets,
+	LocalFromLeft<
+		AssetIdForTrustBackedAssetsConvert<TrustBackedAssetsPalletLocation>,
+		AssetIdForTrustBackedAssets,
+	>,
+	MultiLocation,
+	AccountId,
+>;
+
 impl pallet_asset_conversion::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
 	type Balance = Balance;
 	type HigherPrecisionBalance = sp_core::U256;
-	type Currency = Balances;
-	type AssetId = MultiLocation;
-	type Assets = LocalAndForeignAssets<
-		Assets,
-		AssetIdForTrustBackedAssetsConvert<TrustBackedAssetsPalletLocation>,
-		ForeignAssets,
+	type AssetKind = MultiLocation;
+	type Assets = fungible::UnionOf<
+		Balances,
+		LocalAndForeignAssets,
+		TargetFromLeft<KsmLocation>,
+		Self::AssetKind,
+		Self::AccountId,
 	>;
-	type PoolAssets = PoolAssets;
+	type PoolId = (Self::AssetKind, Self::AssetKind);
+	type PoolLocator =
+		pallet_asset_conversion::WithFirstAsset<KsmLocation, AccountId, Self::AssetKind>;
 	type PoolAssetId = u32;
+	type PoolAssets = PoolAssets;
 	type PoolSetupFee = ConstU128<0>; // Asset class deposit fees are sufficient to prevent spam
-	type PoolSetupFeeReceiver = AssetConversionOrigin;
-	// should be non-zero if `AllowMultiAssetPools` is true, otherwise can be zero.
+	type PoolSetupFeeAsset = KsmLocation;
+	type PoolSetupFeeTarget = ResolveAssetTo<AssetConversionOrigin, Self::Assets>;
 	type LiquidityWithdrawalFee = LiquidityWithdrawalFee;
 	type LPFee = ConstU32<3>;
 	type PalletId = AssetConversionPalletId;
-	type AllowMultiAssetPools = AllowMultiAssetPools;
 	type MaxSwapPathLength = ConstU32<4>;
-	type MultiAssetId = MultiLocation;
-	type MultiAssetIdConverter =
-		MultiLocationConverter<KsmLocation, LocalAndForeignAssetsMultiLocationMatcher>;
 	type MintMinLiquidity = ConstU128<100>;
 	type WeightInfo = weights::pallet_asset_conversion::WeightInfo<Runtime>;
 	#[cfg(feature = "runtime-benchmarks")]
-	type BenchmarkHelper =
-		crate::xcm_config::BenchmarkMultiLocationConverter<parachain_info::Pallet<Runtime>>;
+	type BenchmarkHelper = assets_common::benchmarks::AssetPairFactory<
+		KsmLocation,
+		parachain_info::Pallet<Runtime>,
+		xcm_config::AssetsPalletIndex,
+	>;
 }
 
 parameter_types! {
@@ -762,12 +773,8 @@ impl pallet_collator_selection::Config for Runtime {
 
 impl pallet_asset_conversion_tx_payment::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
-	type Fungibles = LocalAndForeignAssets<
-		Assets,
-		AssetIdForTrustBackedAssetsConvert<TrustBackedAssetsPalletLocation>,
-		ForeignAssets,
-	>;
-	type OnChargeAssetTransaction = AssetConversionAdapter<Balances, AssetConversion>;
+	type Fungibles = LocalAndForeignAssets;
+	type OnChargeAssetTransaction = AssetConversionAdapter<Balances, AssetConversion, KsmLocation>;
 }
 
 parameter_types! {
@@ -1127,7 +1134,7 @@ impl_runtime_apis! {
 		}
 
 		fn get_reserves(asset1: MultiLocation, asset2: MultiLocation) -> Option<(Balance, Balance)> {
-			AssetConversion::get_reserves(&asset1, &asset2).ok()
+			AssetConversion::get_reserves(asset1, asset2).ok()
 		}
 	}
 

system-parachains/asset-hubs/asset-hub-kusama/src/xcm_config.rs

@@ -20,10 +20,7 @@ use super::{
 	TrustBackedAssetsInstance, WeightToFee, XcmpQueue,
 };
 use crate::{ForeignAssets, ForeignAssetsInstance};
-use assets_common::{
-	local_and_foreign_assets::MatchesLocalAndForeignAssetsMultiLocation,
-	matching::{FromSiblingParachain, IsForeignConcreteAsset},
-};
+use assets_common::matching::{FromSiblingParachain, IsForeignConcreteAsset};
 use frame_support::{
 	match_types, parameter_types,
 	traits::{ConstU32, Contains, Equals, Everything, Nothing, PalletInfoAccess},
@@ -58,18 +55,15 @@ use xcm_builder::{
 };
 use xcm_executor::{traits::WithOriginFilter, XcmExecutor};
 
-#[cfg(feature = "runtime-benchmarks")]
-use {cumulus_primitives_core::ParaId, sp_core::Get};
-
 parameter_types! {
 	pub const KsmLocation: MultiLocation = MultiLocation::parent();
 	pub const RelayNetwork: Option<NetworkId> = Some(NetworkId::Kusama);
 	pub RelayChainOrigin: RuntimeOrigin = cumulus_pallet_xcm::Origin::Relay.into();
 	pub UniversalLocation: InteriorMultiLocation =
 		X2(GlobalConsensus(RelayNetwork::get().unwrap()), Parachain(ParachainInfo::parachain_id().into()));
 	pub UniversalLocationNetworkId: NetworkId = UniversalLocation::get().global_consensus().unwrap();
-	pub TrustBackedAssetsPalletLocation: MultiLocation =
-		PalletInstance(<Assets as PalletInfoAccess>::index() as u8).into();
+	pub AssetsPalletIndex: u32 = <Assets as PalletInfoAccess>::index() as u32;
+	pub TrustBackedAssetsPalletLocation: MultiLocation = PalletInstance(AssetsPalletIndex::get() as u8).into();
 	pub ForeignAssetsPalletLocation: MultiLocation =
 		PalletInstance(<ForeignAssets as PalletInfoAccess>::index() as u8).into();
 	pub PoolAssetsPalletLocation: MultiLocation =
@@ -189,24 +183,6 @@ pub type PoolFungiblesTransactor = FungiblesAdapter<
 pub type AssetTransactors =
 	(CurrencyTransactor, FungiblesTransactor, ForeignFungiblesTransactor, PoolFungiblesTransactor);
 
-/// Simple `MultiLocation` matcher for Local and Foreign asset `MultiLocation`.
-pub struct LocalAndForeignAssetsMultiLocationMatcher;
-impl MatchesLocalAndForeignAssetsMultiLocation for LocalAndForeignAssetsMultiLocationMatcher {
-	fn is_local(location: &MultiLocation) -> bool {
-		use assets_common::fungible_conversion::MatchesMultiLocation;
-		TrustBackedAssetsConvertedConcreteId::contains(location)
-	}
-	fn is_foreign(location: &MultiLocation) -> bool {
-		use assets_common::fungible_conversion::MatchesMultiLocation;
-		ForeignAssetsConvertedConcreteId::contains(location)
-	}
-}
-impl Contains<MultiLocation> for LocalAndForeignAssetsMultiLocationMatcher {
-	fn contains(location: &MultiLocation) -> bool {
-		Self::is_local(location) || Self::is_foreign(location)
-	}
-}
-
 /// This is the type we use to convert an (incoming) XCM origin into a local `Origin` instance,
 /// ready for dispatching a transaction with Xcm's `Transact`. There is an `OriginKind` which can
 /// biases the kind of local `Origin` it will become.
@@ -688,32 +664,6 @@ impl pallet_assets::BenchmarkHelper<MultiLocation> for XcmBenchmarkHelper {
 	}
 }
 
-#[cfg(feature = "runtime-benchmarks")]
-pub struct BenchmarkMultiLocationConverter<SelfParaId> {
-	_phantom: sp_std::marker::PhantomData<SelfParaId>,
-}
-
-#[cfg(feature = "runtime-benchmarks")]
-impl<SelfParaId> pallet_asset_conversion::BenchmarkHelper<MultiLocation, MultiLocation>
-	for BenchmarkMultiLocationConverter<SelfParaId>
-where
-	SelfParaId: Get<ParaId>,
-{
-	fn asset_id(asset_id: u32) -> MultiLocation {
-		MultiLocation {
-			parents: 1,
-			interior: X3(
-				Parachain(SelfParaId::get().into()),
-				PalletInstance(<Assets as PalletInfoAccess>::index() as u8),
-				GeneralIndex(asset_id.into()),
-			),
-		}
-	}
-	fn multiasset_id(asset_id: u32) -> MultiLocation {
-		Self::asset_id(asset_id)
-	}
-}
-
 /// All configuration related to bridging
 pub mod bridging {
 	use super::*;

system-parachains/asset-hubs/asset-hub-polkadot/src/lib.rs

@@ -113,8 +113,9 @@ use system_parachains_constants::{
 	SLOT_DURATION,
 };
 use xcm_config::{
-	DotLocation, FellowshipLocation, ForeignAssetsConvertedConcreteId, GovernanceLocation,
-	TrustBackedAssetsConvertedConcreteId, XcmOriginToTransactDispatchOrigin,
+	DotLocation, FellowshipLocation, ForeignAssetsConvertedConcreteId,
+	ForeignCreatorsSovereignAccountOf, GovernanceLocation, TrustBackedAssetsConvertedConcreteId,
+	XcmOriginToTransactDispatchOrigin,
 };
 
 #[cfg(any(feature = "std", test))]
@@ -125,7 +126,6 @@ use pallet_xcm::{EnsureXcm, IsVoiceOfBody};
 use polkadot_runtime_common::{BlockHashCount, SlowAdjustingFeeUpdate};
 use xcm::prelude::*;
 
-use crate::xcm_config::ForeignCreatorsSovereignAccountOf;
 use weights::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight};
 
 impl_opaque_keys! {