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Make System Parachains trusted Teleporters (#1368)

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Make System Parachain trusted Teleporters of each other.

Migration of https://github.com/paritytech/cumulus/pull/2842

---------

Co-authored-by: command-bot <>
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
This commit is contained in:
Ignacio Palacios
2023-10-16 19:52:33 +02:00
committed by GitHub
parent 4145902f1c
commit e0065cb81b
24 changed files with 465 additions and 84 deletions
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cumulus/parachains/runtimes/assets/asset-hub-polkadot/src/xcm_config.rs
+16 -10
View File
@@ -27,7 +27,10 @@ use frame_support::{
};
use frame_system::EnsureRoot;
use pallet_xcm::XcmPassthrough;
use parachains_common::{impls::ToStakingPot, xcm_config::AssetFeeAsExistentialDepositMultiplier};
use parachains_common::{
impls::ToStakingPot,
xcm_config::{AssetFeeAsExistentialDepositMultiplier, ConcreteAssetFromSystem},
};
use polkadot_parachain_primitives::primitives::Sibling;
use sp_runtime::traits::ConvertInto;
use xcm::latest::prelude::*;
@@ -35,8 +38,8 @@ use xcm_builder::{
AccountId32Aliases, AllowExplicitUnpaidExecutionFrom, AllowKnownQueryResponses,
AllowSubscriptionsFrom, AllowTopLevelPaidExecutionFrom, CurrencyAdapter,
DenyReserveTransferToRelayChain, DenyThenTry, DescribeFamily, DescribePalletTerminal,
EnsureXcmOrigin, FungiblesAdapter, HashedDescription, IsConcrete, LocalMint, NativeAsset,
NoChecking, ParentAsSuperuser, ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative,
EnsureXcmOrigin, FungiblesAdapter, HashedDescription, IsConcrete, LocalMint, NoChecking,
ParentAsSuperuser, ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative,
SiblingParachainConvertsVia, SignedAccountId32AsNative, SignedToAccountId32,
SovereignSignedViaLocation, TakeWeightCredit, TrailingSetTopicAsId, UsingComponents,
WeightInfoBounds, WithComputedOrigin, WithUniqueTopic,
@@ -394,6 +397,15 @@ pub type AssetFeeAsExistentialDepositMultiplierFeeCharger = AssetFeeAsExistentia
TrustBackedAssetsInstance,
>;
/// Cases where a remote origin is accepted as trusted Teleporter for a given asset:
///
/// - DOT with the parent Relay Chain and sibling system parachains; and
/// - Sibling parachains' assets from where they originate (as `ForeignCreators`).
pub type TrustedTeleporters = (
ConcreteAssetFromSystem<DotLocation>,
IsForeignConcreteAsset<FromSiblingParachain<parachain_info::Pallet<Runtime>>>,
);
pub struct XcmConfig;
impl xcm_executor::Config for XcmConfig {
type RuntimeCall = RuntimeCall;
@@ -404,13 +416,7 @@ impl xcm_executor::Config for XcmConfig {
// Asset Hub acting _as_ a reserve location for DOT and assets created under `pallet-assets`.
// For DOT, users must use teleport where allowed (e.g. with the Relay Chain).
type IsReserve = ();
// We allow:
// - teleportation of DOT
// - teleportation of sibling parachain's assets (as ForeignCreators)
type IsTeleporter = (
NativeAsset,
IsForeignConcreteAsset<FromSiblingParachain<parachain_info::Pallet<Runtime>>>,
);
type IsTeleporter = TrustedTeleporters;
type UniversalLocation = UniversalLocation;
type Barrier = Barrier;
type Weigher = WeightInfoBounds<