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// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use super::{
AccountId, AllPalletsWithSystem, Balances, ParachainInfo, ParachainSystem, PolkadotXcm,
Runtime, RuntimeCall, RuntimeEvent, RuntimeOrigin, TransactionByteFee, WeightToFee, XcmpQueue,
use cumulus_primitives_core::AggregateMessageOrigin;
parameter_types,
traits::{ConstU32, Contains, EitherOfDiverse, Equals, Everything, Nothing},
};
use frame_system::EnsureRoot;
use pallet_xcm::{EnsureXcm, IsMajorityOfBody, XcmPassthrough};
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xcm_config::{
AllSiblingSystemParachains, ConcreteAssetFromSystem, ParentRelayOrSiblingParachains,
RelayOrOtherSystemParachains,
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},
use polkadot_parachain_primitives::primitives::Sibling;
use polkadot_runtime_common::xcm_sender::ExponentialPrice;
use sp_runtime::traits::AccountIdConversion;
use testnet_parachains_constants::rococo::currency::CENTS;
use xcm::latest::prelude::*;
use xcm_builder::{
AccountId32Aliases, AllowExplicitUnpaidExecutionFrom, AllowKnownQueryResponses,
AllowSubscriptionsFrom, AllowTopLevelPaidExecutionFrom, DenyReserveTransferToRelayChain,
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DenyThenTry, EnsureXcmOrigin, FixedWeightBounds, FrameTransactionalProcessor, FungibleAdapter,
IsConcrete, NativeAsset, ParentAsSuperuser, ParentIsPreset, RelayChainAsNative,
SiblingParachainAsNative, SiblingParachainConvertsVia, SignedAccountId32AsNative,
SignedToAccountId32, SovereignSignedViaLocation, TakeWeightCredit, TrailingSetTopicAsId,
UsingComponents, WithComputedOrigin, WithUniqueTopic, XcmFeeManagerFromComponents,
XcmFeeToAccount,
};
use xcm_executor::XcmExecutor;
parameter_types! {
pub const RelayLocation: Location = Location::parent();
pub RelayChainOrigin: RuntimeOrigin = cumulus_pallet_xcm::Origin::Relay.into();
pub UniversalLocation: InteriorLocation = Parachain(ParachainInfo::parachain_id().into()).into();
pub const ExecutiveBody: BodyId = BodyId::Executive;
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pub TreasuryAccount: AccountId = TREASURY_PALLET_ID.into_account_truncating();
pub RelayTreasuryLocation: Location = (Parent, PalletInstance(rococo_runtime_constants::TREASURY_PALLET_ID)).into();
}
/// We allow root and the Relay Chain council to execute privileged collator selection operations.
pub type CollatorSelectionUpdateOrigin = EitherOfDiverse<
EnsureRoot<AccountId>,
EnsureXcm<IsMajorityOfBody<RelayLocation, ExecutiveBody>>,
>;
/// Type for specifying how a `Location` can be converted into an `AccountId`. This is used
/// when determining ownership of accounts for asset transacting and when attempting to use XCM
/// `Transact` in order to determine the dispatch Origin.
pub type LocationToAccountId = (
// The parent (Relay-chain) origin converts to the parent `AccountId`.
ParentIsPreset<AccountId>,
// Sibling parachain origins convert to AccountId via the `ParaId::into`.
SiblingParachainConvertsVia<Sibling, AccountId>,
// Straight up local `AccountId32` origins just alias directly to `AccountId`.
AccountId32Aliases<RelayNetwork, AccountId>,
);
/// Means for transacting the native currency on this chain.
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pub type CurrencyTransactor = FungibleAdapter<
// Use this currency:
Balances,
// Use this currency when it is a fungible asset matching the given location or name:
IsConcrete<RelayLocation>,
LocationToAccountId,
// Our chain's account ID type (we can't get away without mentioning it explicitly):
AccountId,
// We don't track any teleports of `Balances`.
(),
>;
/// 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.
pub type XcmOriginToTransactDispatchOrigin = (
// Sovereign account converter; this attempts to derive an `AccountId` from the origin location
// using `LocationToAccountId` and then turn that into the usual `Signed` origin. Useful for
// foreign chains who want to have a local sovereign account on this chain which they control.
SovereignSignedViaLocation<LocationToAccountId, RuntimeOrigin>,
// Native converter for Relay-chain (Parent) location; will convert to a `Relay` origin when
// recognised.
RelayChainAsNative<RelayChainOrigin, RuntimeOrigin>,
// Native converter for sibling Parachains; will convert to a `SiblingPara` origin when
// recognised.
SiblingParachainAsNative<cumulus_pallet_xcm::Origin, RuntimeOrigin>,
// Superuser converter for the Relay-chain (Parent) location. This will allow it to issue a
// transaction from the Root origin.
// Native signed account converter; this just converts an `AccountId32` origin into a normal
// `RuntimeOrigin::Signed` origin of the same 32-byte value.
SignedAccountId32AsNative<RelayNetwork, RuntimeOrigin>,
// Xcm origins can be represented natively under the Xcm pallet's Xcm origin.
);
parameter_types! {
// One XCM operation is 1_000_000_000 weight - almost certainly a conservative estimate.
pub UnitWeightCost: Weight = Weight::from_parts(1_000_000_000, 64 * 1024);
pub const MaxInstructions: u32 = 100;
}
pub struct ParentOrParentsPlurality;
impl Contains<Location> for ParentOrParentsPlurality {
fn contains(location: &Location) -> bool {
matches!(location.unpack(), (1, []) | (1, [Plurality { .. }]))
}
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pub type Barrier = TrailingSetTopicAsId<
DenyThenTry<
DenyReserveTransferToRelayChain,
(
TakeWeightCredit,
// Expected responses are OK.
AllowKnownQueryResponses<PolkadotXcm>,
// Allow XCMs with some computed origins to pass through.
WithComputedOrigin<
(
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// If the message is one that immediately attempts to pay for execution, then
// allow it.
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AllowTopLevelPaidExecutionFrom<Everything>,
// Parent, its pluralities (i.e. governance bodies) and relay treasury pallet
// get free execution.
AllowExplicitUnpaidExecutionFrom<(
ParentOrParentsPlurality,
Equals<RelayTreasuryLocation>,
)>,
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// Subscriptions for version tracking are OK.
AllowSubscriptionsFrom<ParentRelayOrSiblingParachains>,
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),
UniversalLocation,
ConstU32<8>,
>,
),
>,
/// Locations that will not be charged fees in the executor,
/// either execution or delivery.
/// We only waive fees for system functions, which these locations represent.
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pub type WaivedLocations = (
RelayOrOtherSystemParachains<AllSiblingSystemParachains, Runtime>,
Equals<RelayTreasuryLocation>,
);
pub type TrustedTeleporter = ConcreteAssetFromSystem<RelayLocation>;
pub struct XcmConfig;
impl xcm_executor::Config for XcmConfig {
type XcmSender = XcmRouter;
type AssetTransactor = CurrencyTransactor;
type OriginConverter = XcmOriginToTransactDispatchOrigin;
type IsReserve = NativeAsset;
type IsTeleporter = TrustedTeleporter;
type Weigher = FixedWeightBounds<UnitWeightCost, RuntimeCall, MaxInstructions>;
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type Trader = UsingComponents<WeightToFee, RelayLocation, AccountId, Balances, ()>;
type ResponseHandler = PolkadotXcm;
type AssetTrap = PolkadotXcm;
type AssetClaims = PolkadotXcm;
type SubscriptionService = PolkadotXcm;
type PalletInstancesInfo = AllPalletsWithSystem;
type MaxAssetsIntoHolding = ConstU32<8>;
type AssetLocker = ();
type AssetExchanger = ();
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type FeeManager = XcmFeeManagerFromComponents<
WaivedLocations,
XcmFeeToAccount<Self::AssetTransactor, AccountId, TreasuryAccount>,
>;
type MessageExporter = ();
type UniversalAliases = Nothing;
type CallDispatcher = RuntimeCall;
type SafeCallFilter = Everything;
type TransactionalProcessor = FrameTransactionalProcessor;
type HrmpNewChannelOpenRequestHandler = ();
type HrmpChannelAcceptedHandler = ();
type HrmpChannelClosingHandler = ();
/// Converts a local signed origin into an XCM location.
/// Forms the basis for local origins sending/executing XCMs.
pub type LocalOriginToLocation = SignedToAccountId32<RuntimeOrigin, AccountId, RelayNetwork>;
pub type PriceForParentDelivery =
ExponentialPrice<FeeAssetId, BaseDeliveryFee, TransactionByteFee, ParachainSystem>;
/// The means for routing XCM messages which are not for local execution into the right message
/// queues.
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pub type XcmRouter = WithUniqueTopic<(
// Two routers - use UMP to communicate with the relay chain:
cumulus_primitives_utility::ParentAsUmp<ParachainSystem, PolkadotXcm, PriceForParentDelivery>,
// ..and XCMP to communicate with the sibling chains.
XcmpQueue,
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)>;
impl pallet_xcm::Config for Runtime {
// We want to disallow users sending (arbitrary) XCMs from this chain.
type SendXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, ()>;
type XcmRouter = XcmRouter;
// We support local origins dispatching XCM executions in principle...
type ExecuteXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;
// ... but disallow generic XCM execution. As a result only teleports and reserve transfers are
// allowed.
type XcmExecuteFilter = Nothing;
type XcmExecutor = XcmExecutor<XcmConfig>;
type XcmTeleportFilter = Everything;
type XcmReserveTransferFilter = Everything;
type Weigher = FixedWeightBounds<UnitWeightCost, RuntimeCall, MaxInstructions>;
const VERSION_DISCOVERY_QUEUE_SIZE: u32 = 100;
type AdvertisedXcmVersion = pallet_xcm::CurrentXcmVersion;
type Currency = Balances;
type CurrencyMatcher = ();
type TrustedLockers = ();
type SovereignAccountOf = LocationToAccountId;
type MaxLockers = ConstU32<8>;
// FIXME: Replace with benchmarked weight info
type WeightInfo = pallet_xcm::TestWeightInfo;
type AdminOrigin = EnsureRoot<AccountId>;
type MaxRemoteLockConsumers = ConstU32<0>;
type RemoteLockConsumerIdentifier = ();
}
impl cumulus_pallet_xcm::Config for Runtime {
type XcmExecutor = XcmExecutor<XcmConfig>;
}
parameter_types! {
/// The asset ID for the asset that we use to pay for message delivery fees.
pub FeeAssetId: AssetId = AssetId(RelayLocation::get());
/// The base fee for the message delivery fees.
pub const BaseDeliveryFee: u128 = CENTS.saturating_mul(3);
}
pub type PriceForSiblingParachainDelivery = polkadot_runtime_common::xcm_sender::ExponentialPrice<
FeeAssetId,
BaseDeliveryFee,
TransactionByteFee,
XcmpQueue,
>;
impl cumulus_pallet_xcmp_queue::Config for Runtime {
type ChannelInfo = ParachainSystem;
type VersionWrapper = PolkadotXcm;
// Enqueue XCMP messages from siblings for later processing.
#[cfg(feature = "runtime-benchmarks")]
type XcmpQueue = ();
#[cfg(not(feature = "runtime-benchmarks"))]
type XcmpQueue = frame_support::traits::TransformOrigin<
crate::MessageQueue,
AggregateMessageOrigin,
cumulus_primitives_core::ParaId,
parachains_common::message_queue::ParaIdToSibling,
>;
type MaxInboundSuspended = sp_core::ConstU32<1_000>;
EnsureRoot<AccountId>,
EnsureXcm<IsMajorityOfBody<RelayLocation, ExecutiveBody>>,
>;
type ControllerOriginConverter = XcmOriginToTransactDispatchOrigin;
type WeightInfo = cumulus_pallet_xcmp_queue::weights::SubstrateWeight<Runtime>;
type PriceForSiblingDelivery = PriceForSiblingParachainDelivery;
parameter_types! {
pub const RelayOrigin: AggregateMessageOrigin = AggregateMessageOrigin::Parent;
}