- Jan 16, 2024
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Francisco Aguirre authored
# Note for reviewer Most changes are just syntax changes necessary for the new version. Most important files should be the ones under the `xcm` folder. # Description Added XCMv4. ## Removed `Multi` prefix The following types have been renamed: - MultiLocation -> Location - MultiAsset -> Asset - MultiAssets -> Assets - InteriorMultiLocation -> InteriorLocation - MultiAssetFilter -> AssetFilter - VersionedMultiAsset -> VersionedAsset - WildMultiAsset -> WildAsset - VersionedMultiLocation -> VersionedLocation In order to fix a name conflict, the `Assets` in `xcm-executor` were renamed to `HoldingAssets`, as they represent assets in holding. ## Removed `Abstract` asset id It was not being used anywhere and this simplifies the code. Now assets are just constructed as follows: ```rust let asset: Asset = (AssetId(Location::new(1, Here)), 100u128).into(); ``` No need for specifying `Concrete` anymore. ## Outcome is now a named fields struct Instead of ```rust pub enum Outcome { Complete(Weight), Incomplete(Weight, Error), Error(Error), } ``` we now have ```rust pub enum Outcome { Complete { used: Weight }, Incomplete { used: Weight, error: Error }, Error { error: Error }, } ``` ## Added Reanchorable trait Now both locations and assets implement this trait, making it easier to reanchor both. ## New syntax for building locations and junctions Now junctions are built using the following methods: ```rust let location = Location { parents: 1, interior: [Parachain(1000), PalletInstance(50), GeneralIndex(1984)].into() }; ``` or ```rust let location = Location::new(1, [Parachain(1000), PalletInstance(50), GeneralIndex(1984)]); ``` And they are matched like so: ```rust match location.unpack() { (1, [Parachain(id)]) => ... (0, Here) => ..., (1, [_]) => ..., } ``` This syntax is mandatory in v4, and has been also implemented for v2 and v3 for easier migration. This was needed to make all sizes smaller. # TODO - [x] Scaffold v4 - [x] Port github.com/paritytech/polkadot/pull/7236 - [x] Remove `Multi` prefix - [x] Remove `Abstract` asset id --------- Co-authored-by: command-bot <> Co-authored-by:Keith Yeung <[email protected]>
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- Dec 06, 2023
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Adrian Catangiu authored
# Motivation (+testing) ### Enable easy `ForeignAssets` transfers using `pallet-xcm` We had just previously added capabilities to teleport fees during reserve-based transfers, but what about reserve-transferring fees when needing to teleport some non-fee asset? This PR aligns everything under either explicit reserve-transfer, explicit teleport, or this new flexible `transfer_assets()` which can mix and match as needed with fewer artificial constraints imposed to the user. This will enable, for example, a (non-system) parachain to teleport their `ForeignAssets` assets to AssetHub while using DOT to pay fees. (the assets are teleported - as foreign assets should from their owner chain - while DOT used for fees can only be reserve-based transferred between said parachain and AssetHub). Added `xcm-emulator` tests for this scenario ^. # Description Reverts `(limited_)reserve_transfer_assets` to only allow reserve-based transfers for all `assets` including fees. Similarly `(limited_)teleport_assets` only allows teleports for all `assets` including fees. For complex combinations of asset transfers where assets and fees may have different reserves or different reserve/teleport trust configurations, users can use the newly added `transfer_assets()` extrinsic which is more flexible in allowing more complex scenarios. `assets` (excluding `fees`) must have same reserve location or otherwise be teleportable to `dest`. No limitations imposed on `fees`. - for local reserve: transfer assets to sovereign account of destination chain and forward a notification XCM to `dest` to mint and deposit reserve-based assets to `beneficiary`. - for destination reserve: burn local assets and forward a notification to `dest` chain to withdraw the reserve assets from this chain's sovereign account and deposit them to `beneficiary`. - for remote reserve: burn local assets, forward XCM to reserve chain to move reserves from this chain's SA to `dest` chain's SA, and forward another XCM to `dest` to mint and deposit reserve-based assets to `beneficiary`. - for teleports: burn local assets and forward XCM to `dest` chain to mint/teleport assets and deposit them to `beneficiary`. ## Review notes Only around 500 lines are prod code (see `pallet_xcm/src/lib.rs`), the rest of the PR is new tests and improving existing tests. --------- Co-authored-by: command-bot <>
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- Nov 24, 2023
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Adrian Catangiu authored
Use non-zero weight limit in benchmarking `pallet_xcm::execute()` so the given XCM actually executes.
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- Nov 13, 2023
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Adrian Catangiu authored
## Motivation `pallet-xcm` is the main user-facing interface for XCM functionality, including assets manipulation functions like `teleportAssets()` and `reserve_transfer_assets()` calls. While `teleportAsset()` works both ways, `reserve_transfer_assets()` works only for sending reserve-based assets to a remote destination and beneficiary when the reserve is the _local chain_. ## Solution This PR enhances `pallet_xcm::(limited_)reserve_withdraw_assets` to support transfers when reserves are other chains. This will allow complete, **bi-directional** reserve-based asset transfers user stories using `pallet-xcm`. Enables following scenarios: - transferring assets with local reserve (was previously supported iff asset used as fee also had local reserve - now it works in all cases), - transferring assets with reserve on destination, - transferring assets with reserve on remote/third-party chain (iff assets and fees have same remote reserve), - transferring assets with reserve different than the reserve of the asset to be used as fees - meaning can be used to transfer random asset with local/dest reserve while using DOT for fees on all involved chains, even if DOT local/dest reserve doesn't match asset reserve, - transferring assets with any type of local/dest reserve while using fees which can be teleported between involved chains. All of the above is done by pallet inner logic without the user having to specify which scenario/reserves/teleports/etc. The correct scenario and corresponding XCM programs are identified, and respectively, built automatically based on runtime configuration of trusted teleporters and trusted reserves. #### Current limitations: - while `fees` and "non-fee" `assets` CAN have different reserves (or fees CAN be teleported), the remaining "non-fee" `assets` CANNOT, among themselves, have different reserve locations (this is also implicitly enforced by `MAX_ASSETS_FOR_TRANSFER=2`, but this can be safely increased in the future). - `fees` and "non-fee" `assets` CANNOT have **different remote** reserves (this could also be supported in the future, but adds even more complexity while possibly not being worth it - we'll see what the future holds). Fixes https://github.com/paritytech/polkadot-sdk/issues/1584 Fixes https://github.com/paritytech/polkadot-sdk/issues/2055 --------- Co-authored-by:
Francisco Aguirre <[email protected]> Co-authored-by:
Branislav Kontur <[email protected]>
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- Nov 10, 2023
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PG Herveou authored
We are introducing a new set of `XcmController` traits (final name yet to be determined). These traits are implemented by `pallet-xcm` and allows other pallets, such as `pallet_contracts`, to rely on these traits instead of tight coupling them to `pallet-xcm`. Using only the existing Xcm traits would mean duplicating the logic from `pallet-xcm` in these other pallets, which we aim to avoid. Our objective is to ensure that when these APIs are called from `pallet-contracts`, they produce the exact same outcomes as if called directly from `pallet-xcm`. The other benefits is that we can also expose return values to `pallet-contracts` instead of just calling `pallet-xcm` dispatchable and getting a `DispatchResult` back. See traits integration in this PR https://github.com/paritytech/polkadot-sdk/pull/1248 , where the traits are used as follow to define and implement `pallet-contracts` Config. ```rs // Contracts config: pub trait Config: frame_system::Config { // ... /// A type that exposes XCM APIs, allowing contracts to interact with other parachains, and /// execute XCM programs. type Xcm: xcm_executor::traits::Controller< OriginFor<Self>, <Self as frame_system::Config>::RuntimeCall, BlockNumberFor<Self>, >; } // implementation impl pallet_contracts::Config for Runtime { // ... type Xcm = pallet_xcm::Pallet<Self>; } ``` --------- Co-authored-by:
Alexander Theißen <[email protected]> Co-authored-by: command-bot <>
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- Apr 27, 2023
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Keith Yeung authored* Move XCM matcher to xcm-builder * Use ProcessMessageError as the error type in MatchXcm and ShouldExecute * Implement a blocking barrier * Fixes * Add benchmarking for force_suspension * ".git/.scripts/commands/bench/bench.sh" runtime westend pallet_xcm * ".git/.scripts/commands/bench/bench.sh" runtime rococo pallet_xcm * ".git/.scripts/commands/bench/bench.sh" runtime kusama pallet_xcm * ".git/.scripts/commands/bench/bench.sh" runtime polkadot pallet_xcm * ".git/.scripts/commands/bench/bench.sh" runtime westend pallet_xcm * ".git/.scripts/commands/bench/bench.sh" runtime rococo pallet_xcm --------- Co-authored-by: command-bot <>
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- Apr 08, 2023
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s0me0ne-unkn0wn authored
* Happy New Year! * Remove year entierly Co-authored-by:
Oliver Tale-Yazdi <[email protected]> * Remove years from copyright notice in the entire repo --------- Co-authored-by:
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- Feb 09, 2023
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Keith Yeung authored
* Replace sp-core dependency with more primitive crates * Remove BoundedVec half-impls in xcm * Fixes * Bump bounded-collections * Address review comments * Bump bounded-collections * Fix benchmarks * Fixes * Fixes * cargo fmt * Fix tests * Update url * Bump url to 2.3.1 * Bump anyhow * Use bounded-collections in pallet-xcm * Update substrate
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- Jan 29, 2023
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Muharem Ismailov authored
* Update benchmark's successful origin api * rustfmt * unwrap for indirect origin dep * replace unwrap by expect with a message --------- Co-authored-by: parity-processbot <>
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- Jan 17, 2023
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Gavin Wood authored
* cargo fmt * Create benchmarks for XCM instructions introduced in v3 (#4564) * Create benchmarks for BurnAsset and ExpectAsset * Add benchmarks for ExpectOrigin and ExpectError * Add benchmarks for QueryPallet and ExpectPallet * Add benchmarks for ReportTransactStatus and ClearTransactStatus * cargo fmt * Use AllPalletsWithSystem in mocks * Update XCM generic benchmarks for westend * Remove default impls for some XCM weight functions * Fix compilation error * Add weight_args helper attribute * Remove manually written XcmWeightInfo * Parse trailing comma * Revert "Add weight_args helper attribute" This reverts commit 3b7c47a6182e1b9227036c38b406d494c3fcf6fd. * Fixes * Fixes * XCM v3: Introduce querier field into `QueryReponse` (#4732) * Introduce querier field into QueryReponse * Convert &Option<MultiLocation> to Option<&MultiLocation> &Option<T> is almost always never quite useful, most of the time it still gets converted to an Option<&T> via `as_ref`, so we should simply make functions that accept Option<&T> instead. * Fix tests * cargo fmt * Fix benchmarks * Appease spellchecker * Fix test * Fix tests * Fix test * Fix mock * Fixes * Fix tests * Add test for response queriers * Update xcm/pallet-xcm/src/lib.rs * Test for non-existence of querier Co-authored-by:
Bastian Köcher <[email protected]> * Make use of starts_with in match_and_split Co-authored-by:
Bastian Köcher <[email protected]> Co-authored-by:
Parity Bot <[email protected]> * Fixes * Fixes * Fixes * Fixes * Formatting * Fixes * Formatting * Fixes * Fixes * Formatting * Formatting * Remove horrible names * Bump * Remove InvertLocation trait (#5092) * Remove InvertLocation trait * Remove unneeded functions * Formatting * Fixes * Remove XCMv1 (#5094) * Remove XCMv1 * Remove XCMv1 * Formatting * Fixes * Fixes * Formatting * derive serialize/deserialize for xcm primitives (#5036) * derive serialize/deserialize for xcm primitives * derive serialize/deserialize for xcm primitives * update v3 * update v2 Co-authored-by:
Gav Wood <[email protected]> * Update lock * Fixes * Add benchmarks for the ExchangeAsset instruction * `AliasOrigin` instruction stub (#5122) * AliasOrigin instruction stub * Fixes * Fixes * Update substrate * Fixes * Ensure same array length before using copy_from_slice * Fixes * Add benchmarks for the UniversalOrigin instruction * Remove unused import * Remove unused import * Add benchmarks for SetFeesMode instruction * Add benchmarks for asset (un)locking instructions * Leave AliasOrigin unbenchmarked * Fixes after merge * cargo fmt * Fixes * Fixes * Set TrustedReserves to None on both Kusama and Westend * Remove extraneous reserve_asset_deposited benchmark * Fix universal_origin benchmark * cargo run --quiet --profile=production --features=runtime-benchmarks -- benchmark pallet --chain=westend-dev --steps=50 --repeat=20 --pallet=pallet_xcm_benchmarks::generic --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --template=./xcm/pallet-xcm-benchmarks/template.hbs --output=./runtime/westend/src/weights/xcm/pallet_xcm_benchmarks_generic.rs * Don't rely on skipped benchmark functions * Fixes * cargo run --quiet --profile=production --features=runtime-benchmarks -- benchmark pallet --chain=kusama-dev --steps=50 --repeat=20 --pallet=pallet_xcm_benchmarks::generic --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --template=./xcm/pallet-xcm-benchmarks/template.hbs --output=./runtime/kusama/src/weights/xcm/pallet_xcm_benchmarks_generic.rs * Fix unused variables * Fixes * Spelling * Fixes * Fix codec index of VersionedXcm * Allows to customize how calls are dispatched from XCM (#5657) * CallDispatcher trait * fmt * unused import * fix test-runtime * remove JustDispatch type * fix typo in test-runtime * missing CallDispatcher * more missing CallDispatcher * Update comment `NoteAssetLocked` -> `NoteUnlockable` * Fixes * Fixes * Adjust MultiAssets weights based on new wild card variants * Fixes * Fixes * Fixes * Fixes * Fixes * Some late fixes for XCMv3 (#5237) * Maximise chances that trapped assets can be reclaimed * Do origin check as part of ExportMessage for security * Formatting * Fixes * Cleanup export XCM APIs * Formatting * Update xcm/src/v3/junctions.rs * UnpaidExecution instruction and associated barrier. * Tighten barriers (ClearOrigin/QueryResponse) * Allow only 1 ClearOrigin instruction in AllowTopLevelPaidExecutionFrom * Bi-directional teleport accounting * Revert other fix * Build fixes] * Tests build * Benchmark fixes Co-authored-by:
asynchronous rob <[email protected]> * Add more weight tests * cargo fmt * Create thread_local in XCM executor to limit recursion depth (#6304) * Create thread_local in XCM executor to limit recursion depth * Add unit test for recursion limit * Fix statefulness in tests * Remove panic * Use defer and environmental macro * Fix the implementation * Use nicer interface * Change ThisNetwork to AnyNetwork * Move recursion check up to top level * cargo fmt * Update comment Co-authored-by:
Squirrel <[email protected]> * Use for Kusama * Use WithComputedOrigin for Polkadot, Rococo and Westend * Update lock * Fix warning * Update xcm/pallet-xcm/src/tests.rs Co-authored-by:
Alexander Popiak <[email protected]> Co-authored-by:
stanly-johnson <[email protected]> Co-authored-by:
nanocryk <[email protected]> Co-authored-by:
Vincent Geddes <[email protected]> Co-authored-by:
Shawn Tabrizi <[email protected]>
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