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XCM v1 (#2815)
* MultiAsset TWO * Draft next MultiAsset API. * XCM core builds * XCM Executor builds * XCM Builder builds * API changes making their way throughout * Some TODOs * Further build fixes * Basic compile builds * First test fixed * All executor tests fixed * Typo * Optimize subsume_assets and add test * Optimize checked_sub * XCM Builder first test fixed * Fix builder tests * Fix doc test * fix some doc tests * spelling * named fields for AllOf * Update xcm/src/v0/multiasset.rs Co-authored-by: Alexander Popiak <alexander.popiak@parity.io> * Update xcm/src/v0/multiasset.rs Co-authored-by: Alexander Popiak <alexander.popiak@parity.io> * Update xcm/src/v0/multiasset.rs Co-authored-by: Alexander Popiak <alexander.popiak@parity.io> * Update xcm/src/v0/multiasset.rs Co-authored-by: Alexander Popiak <alexander.popiak@parity.io> * Reformat * Move to XCM version 1 * Spelling * warnings * Replace some more v0->v1s * warnings * format * Add max_assets param * building * test fixes * tests * another test * final test * tests * Rename Null -> Here * Introduce * More ergonomics * More ergonomics * test fix * test fixes * docs * BuyExecution includes * Fix XCM extrinsics * fmt * Make Vec<MultiAsset>/MultiAssets conversions safe * More MultiAssets conversion safety * spelling * fix doc test * Apply suggestions from code review Co-authored-by: Amar Singh <asinghchrony@protonmail.com> * Apply suggestions from code review Co-authored-by: Amar Singh <asinghchrony@protonmail.com> * fmt * Add v0, remove VersionedMultiAsset * Remove VersionedMultiLocation * Update xcm/src/v1/order.rs Co-authored-by: Amar Singh <asinghchrony@protonmail.com> * Update xcm/src/v1/mod.rs Co-authored-by: Amar Singh <asinghchrony@protonmail.com> * XCM v0 backwards compatibility * Full compatibility * fmt * Update xcm/pallet-xcm/src/lib.rs * Update xcm/src/v0/order.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com> * Tweaks to versioning system * Fixes * fmt * Update xcm/xcm-executor/src/assets.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com> * Update xcm/xcm-executor/src/assets.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com> * Grumbles * Update xcm/src/v1/multiasset.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com> * fmt * Update xcm/src/v1/multiasset.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com> * Update xcm/src/v1/multiasset.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com> * Fixes * Formatting Co-authored-by: Alexander Popiak <alexander.popiak@parity.io> Co-authored-by: Amar Singh <asinghchrony@protonmail.com> Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
This commit is contained in:
Gavin Wood
@@ -80,7 +80,7 @@ use polkadot_parachain::primitives::Id as ParaId;
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use constants::{currency::*, fee::*, time::*};
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use frame_support::traits::InstanceFilter;
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use xcm::v0::{BodyId, MultiLocation, NetworkId, Xcm};
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use xcm::latest::prelude::*;
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use xcm_builder::{
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AccountId32Aliases, BackingToPlurality, ChildParachainAsNative, ChildParachainConvertsVia,
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ChildSystemParachainAsSuperuser, CurrencyAdapter as XcmCurrencyAdapter, FixedWeightBounds,
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@@ -583,9 +583,9 @@ impl parachains_paras::Config for Runtime {
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}
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parameter_types! {
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pub const RocLocation: MultiLocation = MultiLocation::Null;
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pub const RocLocation: MultiLocation = MultiLocation::Here;
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pub const RococoNetwork: NetworkId = NetworkId::Polkadot;
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pub const Ancestry: MultiLocation = MultiLocation::Null;
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pub const Ancestry: MultiLocation = MultiLocation::Here;
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pub CheckAccount: AccountId = XcmPallet::check_account();
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}
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@@ -620,24 +620,15 @@ parameter_types! {
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/// individual routers.
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pub type XcmRouter = (
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// Only one router so far - use DMP to communicate with child parachains.
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xcm_sender::ChildParachainRouter<Runtime>,
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xcm_sender::ChildParachainRouter<Runtime, xcm::AlwaysRelease>,
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);
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use xcm::v0::{
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Junction::Parachain,
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MultiAsset,
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MultiAsset::AllConcreteFungible,
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MultiLocation::{Null, X1},
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};
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parameter_types! {
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pub const RococoForTick: (MultiAsset, MultiLocation) =
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(AllConcreteFungible { id: Null }, X1(Parachain(100)));
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pub const RococoForTrick: (MultiAsset, MultiLocation) =
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(AllConcreteFungible { id: Null }, X1(Parachain(110)));
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pub const RococoForTrack: (MultiAsset, MultiLocation) =
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(AllConcreteFungible { id: Null }, X1(Parachain(120)));
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pub const RococoForStatemint: (MultiAsset, MultiLocation) =
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(AllConcreteFungible { id: Null }, X1(Parachain(1001)));
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pub const Rococo: MultiAssetFilter = Wild(AllOf { fun: WildFungible, id: Concrete(RocLocation::get()) });
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pub const RococoForTick: (MultiAssetFilter, MultiLocation) = (Rococo::get(), X1(Parachain(100)));
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pub const RococoForTrick: (MultiAssetFilter, MultiLocation) = (Rococo::get(), X1(Parachain(110)));
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pub const RococoForTrack: (MultiAssetFilter, MultiLocation) = (Rococo::get(), X1(Parachain(120)));
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pub const RococoForStatemint: (MultiAssetFilter, MultiLocation) = (Rococo::get(), X1(Parachain(1001)));
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}
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pub type TrustedTeleporters = (
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xcm_builder::Case<RococoForTick>,
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@@ -692,65 +683,14 @@ pub type LocalOriginToLocation = (
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SignedToAccountId32<Origin, AccountId, RococoNetwork>,
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);
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pub struct OnlyWithdrawTeleportForAccounts;
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impl frame_support::traits::Contains<(MultiLocation, Xcm<Call>)>
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for OnlyWithdrawTeleportForAccounts
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{
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fn contains((ref origin, ref msg): &(MultiLocation, Xcm<Call>)) -> bool {
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use xcm::v0::{
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Junction::{AccountId32, Plurality},
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MultiAsset::{All, ConcreteFungible},
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Order::{BuyExecution, DepositAsset, InitiateTeleport},
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Xcm::WithdrawAsset,
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};
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match origin {
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// Root and collective are allowed to execute anything.
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Null | X1(Plurality { .. }) => true,
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X1(AccountId32 { .. }) => {
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// An account ID trying to send a message. We ensure that it's sensible.
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// This checks that it's of the form:
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// WithdrawAsset {
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// assets: [ ConcreteFungible { id: Null } ],
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// effects: [ BuyExecution, InitiateTeleport {
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// assets: All,
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// dest: Parachain,
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// effects: [ BuyExecution, DepositAssets {
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// assets: All,
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// dest: AccountId32,
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// } ]
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// } ]
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// }
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matches!(msg, WithdrawAsset { ref assets, ref effects }
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if assets.len() == 1
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&& matches!(assets[0], ConcreteFungible { id: Null, .. })
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&& effects.len() == 2
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&& matches!(effects[0], BuyExecution { .. })
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&& matches!(effects[1], InitiateTeleport { ref assets, dest: X1(Parachain(..)), ref effects }
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if assets.len() == 1
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&& matches!(assets[0], All)
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&& effects.len() == 2
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&& matches!(effects[0], BuyExecution { .. })
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&& matches!(effects[1], DepositAsset { ref assets, dest: X1(AccountId32{..}) }
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if assets.len() == 1
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&& matches!(assets[0], All)
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)
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)
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)
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},
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// Nobody else is allowed to execute anything.
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_ => false,
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}
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}
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}
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impl pallet_xcm::Config for Runtime {
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type Event = Event;
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type SendXcmOrigin = xcm_builder::EnsureXcmOrigin<Origin, LocalOriginToLocation>;
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type XcmRouter = XcmRouter;
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// Anyone can execute XCM messages locally...
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type ExecuteXcmOrigin = xcm_builder::EnsureXcmOrigin<Origin, LocalOriginToLocation>;
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// ...but they must match our filter, which requires them to be a simple withdraw + teleport.
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type XcmExecuteFilter = OnlyWithdrawTeleportForAccounts;
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// ...but they must match our filter, which right now rejects everything.
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type XcmExecuteFilter = ();
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type XcmExecutor = XcmExecutor<XcmConfig>;
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type XcmTeleportFilter = All<(MultiLocation, Vec<MultiAsset>)>;
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type XcmReserveTransferFilter = All<(MultiLocation, Vec<MultiAsset>)>;
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