config foreign assets transactor

Author: alistair-singh

cumulus/parachains/runtimes/testing/penpal/src/xcm_config.rs

@@ -24,8 +24,8 @@
 //! soon.
 use super::{
 	AccountId, AllPalletsWithSystem, AssetId as AssetIdPalletAssets, Assets, Balance, Balances,
-	ParachainInfo, ParachainSystem, PolkadotXcm, Runtime, RuntimeCall, RuntimeEvent, RuntimeOrigin,
-	WeightToFee, XcmpQueue,
+	ForeignAssets, ParachainInfo, ParachainSystem, PolkadotXcm, Runtime, RuntimeCall, RuntimeEvent,
+	RuntimeOrigin, WeightToFee, XcmpQueue,
 };
 use core::marker::PhantomData;
 use frame_support::{
@@ -49,7 +49,7 @@ use xcm_builder::{
 	AllowSubscriptionsFrom, AllowTopLevelPaidExecutionFrom, AsPrefixedGeneralIndex,
 	ConvertedConcreteId, CurrencyAdapter, DenyReserveTransferToRelayChain, DenyThenTry,
 	EnsureXcmOrigin, FixedWeightBounds, FungiblesAdapter, IsConcrete, LocalMint, NativeAsset,
-	ParentAsSuperuser, ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative,
+	NoChecking, ParentAsSuperuser, ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative,
 	SiblingParachainConvertsVia, SignedAccountId32AsNative, SignedToAccountId32,
 	SovereignSignedViaLocation, TakeWeightCredit, TrailingSetTopicAsId, UsingComponents,
 	WithComputedOrigin, WithUniqueTopic,
@@ -111,8 +111,30 @@ pub type FungiblesTransactor = FungiblesAdapter<
 	CheckingAccount,
 >;
 
+/// `AssetId/Balance` converter for `TrustBackedAssets`
+pub type ForeignAssetsConvertedConcreteId = assets_common::ForeignAssetsConvertedConcreteId<
+	Nothing,
+	Balance,
+>;
+
+/// Means for transacting foreign assets from different global consensus.
+pub type ForeignFungiblesTransactor = FungiblesAdapter<
+	// Use this fungibles implementation:
+	ForeignAssets,
+	// Use this currency when it is a fungible asset matching the given location or name:
+	ForeignAssetsConvertedConcreteId,
+	// Convert an XCM MultiLocation into a local account id:
+	LocationToAccountId,
+	// Our chain's account ID type (we can't get away without mentioning it explicitly):
+	AccountId,
+	// We dont need to check teleports here.
+	NoChecking,
+	// The account to use for tracking teleports.
+	CheckingAccount,
+>;
+
 /// Means for transacting assets on this chain.
-pub type AssetTransactors = (CurrencyTransactor, FungiblesTransactor);
+pub type AssetTransactors = (CurrencyTransactor, FungiblesTransactor, ForeignFungiblesTransactor);
 
 /// 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