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Statemint Reserve Asset Transfer (#552)

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* add AssetId type alias in statemint-common

* add FungiblesAdapter to allow for asset transactions via XCM

* use custom Polkadot

* fix FungiblesAdapter usage and add CheckingAccount

* update deps

* remove polkadot overrides

* update deps

* pull NonZeroIssuance struct into common + add FungiblesTransactor to Statemine and Westmint

* remove unnecessary tuple wrapping + adjust asset transactor comments

* accept statemint as reserve in rococo test parachain

* adjust parachain config (add Statemint as reserve)

* add test and docs for AssetsFrom

* cargo fmt

Co-authored-by: Ricardo Rius <ricardo@parity.io>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
This commit is contained in:
Alexander Popiak
2021-10-05 11:35:03 +02:00
committed by GitHub
parent bd6b147235
commit ca77ce153f
9 changed files with 237 additions and 51 deletions
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cumulus/polkadot-parachains/statemint/src/lib.rs
+40 -15
View File
@@ -31,7 +31,7 @@ use sp_runtime::{
create_runtime_str, generic, impl_opaque_keys,
traits::{AccountIdLookup, BlakeTwo256, Block as BlockT},
transaction_validity::{TransactionSource, TransactionValidity},
ApplyExtrinsicResult,
ApplyExtrinsicResult, Perbill,
};
use sp_std::prelude::*;
@@ -56,11 +56,10 @@ use frame_system::{
};
pub use parachains_common as common;
use parachains_common::{
impls::DealWithFees, opaque, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index,
Signature, AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO,
SLOT_DURATION,
impls::{DealWithFees, NonZeroIssuance},
opaque, AccountId, AssetId, AuraId, Balance, BlockNumber, Hash, Header, Index, Signature,
AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO, SLOT_DURATION,
};
use sp_runtime::Perbill;
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;
@@ -71,13 +70,14 @@ use polkadot_parachain::primitives::Sibling;
use polkadot_runtime_common::{BlockHashCount, RocksDbWeight, SlowAdjustingFeeUpdate};
use xcm::latest::prelude::*;
use xcm_builder::{
AccountId32Aliases, AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom, CurrencyAdapter,
EnsureXcmOrigin, FixedWeightBounds, IsConcrete, LocationInverter, NativeAsset,
AccountId32Aliases, AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom,
AsPrefixedGeneralIndex, ConvertedConcreteAssetId, CurrencyAdapter, EnsureXcmOrigin,
FixedWeightBounds, FungiblesAdapter, IsConcrete, LocationInverter, NativeAsset,
ParentAsSuperuser, ParentIsDefault, RelayChainAsNative, SiblingParachainAsNative,
SiblingParachainConvertsVia, SignedAccountId32AsNative, SignedToAccountId32,
SovereignSignedViaLocation, TakeWeightCredit, UsingComponents,
};
use xcm_executor::{Config, XcmExecutor};
use xcm_executor::{traits::JustTry, Config, XcmExecutor};
impl_opaque_keys! {
pub struct SessionKeys {
@@ -233,7 +233,7 @@ pub type AssetsForceOrigin = EnsureOneOf<
impl pallet_assets::Config for Runtime {
type Event = Event;
type Balance = Balance;
type AssetId = u32;
type AssetId = AssetId;
type Currency = Balances;
type ForceOrigin = AssetsForceOrigin;
type AssetDeposit = AssetDeposit;
@@ -430,6 +430,8 @@ parameter_types! {
pub const RelayNetwork: NetworkId = NetworkId::Polkadot;
pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
pub const Local: MultiLocation = Here.into();
pub CheckingAccount: AccountId = PolkadotXcm::check_account();
}
/// Type for specifying how a `MultiLocation` can be converted into an `AccountId`. This is used
@@ -444,20 +446,44 @@ pub type LocationToAccountId = (
AccountId32Aliases<RelayNetwork, AccountId>,
);
/// Means for transacting assets on this chain.
pub type LocalAssetTransactor = CurrencyAdapter<
/// Means for transacting the native currency on this chain.
pub type CurrencyTransactor = CurrencyAdapter<
// Use this currency:
Balances,
// Use this currency when it is a fungible asset matching the given location or name:
IsConcrete<DotLocation>,
// Do a simple punn to convert an AccountId32 MultiLocation into a native chain account ID:
// 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 don't track any teleports.
// We don't track any teleports of `Balances`.
(),
>;
/// Means for transacting assets besides the native currency on this chain.
pub type FungiblesTransactor = FungiblesAdapter<
// Use this fungibles implementation:
Assets,
// Use this currency when it is a fungible asset matching the given location or name:
ConvertedConcreteAssetId<
AssetId,
Balance,
AsPrefixedGeneralIndex<Local, AssetId, JustTry>,
JustTry,
>,
// 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 only want to allow teleports of known assets. We use non-zero issuance as an indication
// that this asset is known.
NonZeroIssuance<AccountId, Assets>,
// The account to use for tracking teleports.
CheckingAccount,
>;
/// Means for transacting assets on this chain.
pub type AssetTransactors = (CurrencyTransactor, FungiblesTransactor);
/// 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.
@@ -506,8 +532,7 @@ pub struct XcmConfig;
impl Config for XcmConfig {
type Call = Call;
type XcmSender = XcmRouter;
// How to withdraw and deposit an asset.
type AssetTransactor = LocalAssetTransactor;
type AssetTransactor = AssetTransactors;
type OriginConverter = XcmOriginToTransactDispatchOrigin;
type IsReserve = NativeAsset;
type IsTeleporter = NativeAsset; // <- should be enough to allow teleportation of DOT