- Apr 23, 2024
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Branislav Kontur authored
Ensure outbound XCMs are decodable with limits + add `EnsureDecodableXcm` router (for testing purposes) (#4186) This PR: - adds `EnsureDecodableXcm` (testing) router that attempts to *encode* and *decode* passed XCM `message` to ensure that the receiving side will be able to decode, at least with the same XCM version. - fixes `pallet_xcm` / `pallet_xcm_benchmarks` assets data generation Relates to investigation of https://substrate.stackexchange.com/questions/11288 and missing fix https://github.com/paritytech/polkadot-sdk/pull/2129 which did not get into the fellows 1.1.X release. ## Questions/TODOs - [x] fix XCM benchmarks, which produces undecodable data - new router catched at least two cases - `BoundedVec exceeds its limit` - `Fungible asset of zero amount is not allowed` - [x] do we need to add `sort` to the `prepend_with` as we did for reanchor [here](https://github.com/paritytech/polkadot-sdk/pull/2129)? @serban300 (**created separate/follow-up PR**: https://github.com/paritytech/polkadot-sdk/pull/4235) - [x] We added decoding check to `XcmpQueue` -> `validate_xcm_nesting`, why not to added to the `ParentAsUmp` or `ChildParachainRouter`? @franciscoaguirre (**created separate/follow-up PR**: https://github.com/paritytech/polkadot-sdk/pull/4236 ) - [ ] `SendController::send_blob` replace `VersionedXcm::<()>::decode(` with `VersionedXcm::<()>::decode_with_depth_limit(MAX_XCM_DECODE_DEPTH, data)` ? --------- Co-authored-by:
Adrian Catangiu <[email protected]>
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- Apr 22, 2024
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Branislav Kontur authored
This PR: - sanitizes all `UniversalLocation`s with `GlobalConsensus` (when possible) - addressing [comment](https://github.com/paritytech/polkadot-sdk/pull/4025#discussion_r1557361473) - adds `DefaultConfig` for `pallet-xcm-benchmarks` for `system`
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- Mar 22, 2024
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girazoki authored
Currently `transfer_assets` from pallet-xcm covers 4 main different transfer types: - `localReserve` - `DestinationReserve` - `Teleport` - `RemoteReserve` For the first three, the local execution and the remote message sending are separated, and fees are deducted in pallet-xcm itself: https://github.com/paritytech/polkadot-sdk/blob/3410dfb3929462da88be2da813f121d8b1cf46b3/polkadot/xcm/pallet-xcm/src/lib.rs#L1758 . For the 4th case `RemoteReserve`, pallet-xcm is still relying on the xcm-executor itself to send the message (through the `initiateReserveWithdraw` instruction). In this case, if delivery fees need to be charged, it is not possible to do so because the `jit_withdraw` mode has not being set. This PR proposes to still use the `initiateReserveWithdraw` but prepending a `setFeesMode { jit_withdraw: true }` to make sure delivery fees can be paid. A test-case is also added to present the aforementioned case --------- Co-authored-by:
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- Mar 19, 2024
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Juan Ignacio Rios authored
Currently the xcm-executor returns an `Unimplemented` error if it receives any HRMP-related instruction. What I propose here, which is what we are currently doing in our forked executor at polimec, is to introduce a trait implemented by the executor which will handle those instructions. This way, if parachains want to keep the default behavior, they just use `()` and it will return unimplemented, but they can also implement their own logic to establish HRMP channels with other chains in an automated fashion, without requiring to go through governance. Our implementation is mentioned in the [polkadot HRMP docs](https://arc.net/l/quote/hduiivbu ), and it was suggested to us to submit a PR to add these changes to polkadot-sdk. --------- Co-authored-by:
Branislav Kontur <[email protected]> Co-authored-by: command-bot <>
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- Mar 15, 2024
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gupnik authored
Step in https://github.com/paritytech/polkadot-sdk/issues/171 This PR removes `as [disambiguation_path]` syntax from `derive_impl` usage across the polkadot-sdk as introduced in https://github.com/paritytech/polkadot-sdk/pull/3505
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- Mar 01, 2024
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Francisco Aguirre authored
If an XCM execution fails or ends with leftover assets, these will be trapped. In order to claim them, a custom XCM has to be executed, with the `ClaimAsset` instruction. However, arbitrary XCM execution is not allowed everywhere yet and XCM itself is still not easy enough to use for users out there with trapped assets. This new extrinsic in `pallet-xcm` will allow these users to easily claim their assets, without concerning themselves with writing arbitrary XCMs. Part of fixing https://github.com/paritytech/polkadot-sdk/issues/3495 --------- Co-authored-by: command-bot <> Co-authored-by:
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- Feb 26, 2024
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Branislav Kontur authored
## Problem During the bumping of the `polkadot-fellows` repository to `[email protected]`, I encountered a situation where the benchmarks `teleport_assets` and `reserve_transfer_assets` in AssetHubKusama started to fail. This issue arose due to a decreased ED balance for AssetHubs introduced [here](https://github.com/polkadot-fellows/runtimes/pull/158/files#diff-80668ff8e793b64f36a9a3ec512df5cbca4ad448c157a5d81abda1b15f35f1daR213), and also because of a [missing CI pipeline](https://github.com/polkadot-fellows/runtimes/issues/197) to check the benchmarks, which went unnoticed. These benchmarks expect the `caller` to have enough: 1. balance to transfer (BTT) 2. balance for paying delivery (BFPD). So the initial balance was calculated as `ED * 100`, which seems reasonable: ``` const ED_MULTIPLIER: u32 = 100; let balance = existential_deposit.saturating_mul(ED_MULTIPLIER.into());` ``` The problem arises when the price for delivery is 100 times higher than the existential deposit. In other words, when `ED * 100` does not cover `BTT` + `BFPD`. I check AHR/AHW/AHK/AHP and this problem has only AssetHubKusama ``` ED: 3333333 calculated price to parent delivery: 1031666634 (from xcm logs from the benchmark) --- 3333333 * 100 - BTT(3333333) - BFPD(1031666634) = −701666667 ``` which results in the error; ``` 2024-02-23 09:19:42 Unable to charge fee with error Module(ModuleError { index: 31, error: [17, 0, 0, 0], message: Some("FeesNotMet") }) Error: Input("Benchmark pallet_xcm::reserve_transfer_assets failed: FeesNotMet") ``` ## Solution The benchmarks `teleport_assets` and `reserve_transfer_assets` were fixed by removing `ED * 100` and replacing it with `DeliveryHelper` logic, which calculates the (almost real) price for delivery and sets it along with the existential deposit as the initial balance for the account used in the benchmark. ## TODO - [ ] patch for 1.6 - https://github.com/paritytech/polkadot-sdk/pull/3466 - [ ] patch for 1.7 - https://github.com/paritytech/polkadot-sdk/pull/3465 - [ ] patch for 1.8 - TODO: PR --------- Co-authored-by:
Francisco Aguirre <[email protected]>
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- Feb 13, 2024
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Branislav Kontur authored
I found out during the cleanup of this deprecation message in the `polkadot-fellows` repository that we deprecated `CurrencyAdapter` without making the recommended changes. ## TODO - [ ] fix `polkadot-fellows` bump to 1.6.0 https://github.com/polkadot-fellows/runtimes/pull/159 --------- Co-authored-by:
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- Jan 31, 2024
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Branislav Kontur authored
[frame] `#[pallet::composite_enum]` improved variant count handling + removed `pallet_balances`'s `MaxHolds` config (#2657) I started this investigation/issue based on @liamaharon question [here](https://github.com/paritytech/polkadot-sdk/pull/1801#discussion_r1410452499). ## Problem The `pallet_balances` integrity test should correctly detect that the runtime has correct distinct `HoldReasons` variant count. I assume the same situation exists for RuntimeFreezeReason. It is not a critical problem, if we set `MaxHolds` with a sufficiently large value, everything should be ok. However, in this case, the integrity_test check becomes less useful. **Situation for "any" runtime:** - `HoldReason` enums from different pallets: ```rust /// from pallet_nis #[pallet::composite_enum] pub enum HoldReason { NftReceipt, } /// from pallet_preimage #[pallet::composite_enum] pub enum HoldReason { Preimage, } // from pallet_state-trie-migration #[pallet::composite_enum] pub enum HoldReason { SlashForContinueMigrate, SlashForMigrateCustomTop, SlashForMigrateCustomChild, } ``` - generated `RuntimeHoldReason` enum looks like: ```rust pub enum RuntimeHoldReason { #[codec(index = 32u8)] Preimage(pallet_preimage::HoldReason), #[codec(index = 38u8)] Nis(pallet_nis::HoldReason), #[codec(index = 42u8)] StateTrieMigration(pallet_state_trie_migration::HoldReason), } ``` - composite enum `RuntimeHoldReason` variant count is detected as `3` - we set `type MaxHolds = ConstU32<3>` - `pallet_balances::integrity_test` is ok with `3`(at least 3) However, the real problem can occur in a live runtime where some functionality might stop working. This is due to a total of 5 distinct hold reasons (for pallets with multi-instance support, it is even more), and not all of them can be used because of an incorrect `MaxHolds`, which is deemed acceptable according to the `integrity_test`: ``` // pseudo-code - if we try to call all of these: T::Currency::hold(&pallet_nis::HoldReason::NftReceipt.into(), &nft_owner, deposit)?; T::Currency::hold(&pallet_preimage::HoldReason::Preimage.into(), &nft_owner, deposit)?; T::Currency::hold(&pallet_state_trie_migration::HoldReason::SlashForContinueMigrate.into(), &nft_owner, deposit)?; // With `type MaxHolds = ConstU32<3>` these two will fail T::Currency::hold(&pallet_state_trie_migration::HoldReason::SlashForMigrateCustomTop.into(), &nft_owner, deposit)?; T::Currency::hold(&pallet_state_trie_migration::HoldReason::SlashForMigrateCustomChild.into(), &nft_owner, deposit)?; ``` ## Solutions A macro `#[pallet::*]` expansion is extended of `VariantCount` implementation for the `#[pallet::composite_enum]` enum type. This expansion generates the `VariantCount` implementation for pallets' `HoldReason`, `FreezeReason`, `LockId`, and `SlashReason`. Enum variants must be plain enum values without fields to ensure a deterministic count. The composite runtime enum, `RuntimeHoldReason` and `RuntimeFreezeReason`, now sets `VariantCount::VARIANT_COUNT` as the sum of pallets' enum `VariantCount::VARIANT_COUNT`: ```rust #[frame_support::pallet(dev_mode)] mod module_single_instance { #[pallet::composite_enum] pub enum HoldReason { ModuleSingleInstanceReason1, ModuleSingleInstanceReason2, } ... } #[frame_support::pallet(dev_mode)] mod module_multi_instance { #[pallet::composite_enum] pub enum HoldReason<I: 'static = ()> { ModuleMultiInstanceReason1, ModuleMultiInstanceReason2, ModuleMultiInstanceReason3, } ... } impl self::sp_api_hidden_includes_construct_runtime::hidden_include::traits::VariantCount for RuntimeHoldReason { const VARIANT_COUNT: u32 = 0 + module_single_instance::HoldReason::VARIANT_COUNT + module_multi_instance::HoldReason::<module_multi_instance::Instance1>::VARIANT_COUNT + module_multi_instance::HoldReason::<module_multi_instance::Instance2>::VARIANT_COUNT + module_multi_instance::HoldReason::<module_multi_instance::Instance3>::VARIANT_COUNT; } ``` In addition, `MaxHolds` is removed (as suggested [here](https://github.com/paritytech/polkadot-sdk/pull/2657#discussion_r1443324573)) from `pallet_balances`, and its `Holds` are now bounded to `RuntimeHoldReason::VARIANT_COUNT`. Therefore, there is no need to let the runtime specify `MaxHolds`. ## For reviewers Relevant changes can be found here: - `substrate/frame/support/procedural/src/lib.rs` - `substrate/frame/support/procedural/src/pallet/parse/composite.rs` - `substrate/frame/support/procedural/src/pallet/expand/composite.rs` - `substrate/frame/support/procedural/src/construct_runtime/expand/composite_helper.rs` - `substrate/frame/support/procedural/src/construct_runtime/expand/hold_reason.rs` - `substrate/frame/support/procedural/src/construct_runtime/expand/freeze_reason.rs` - `substrate/frame/support/src/traits/misc.rs` And the rest of the files is just about removed `MaxHolds` from `pallet_balances` ## Next steps Do the same for `MaxFreezes` https://github.com/paritytech/polkadot-sdk/issues/2997 . --------- Co-authored-by: command-bot <> Co-authored-by:
Bastian Köcher <[email protected]> Co-authored-by:
Dónal Murray <[email protected]> Co-authored-by:
gupnik <[email protected]>
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- Jan 24, 2024
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Just van Stam authored
Moved from: https://github.com/paritytech/polkadot/pull/6951 closes https://github.com/paritytech/polkadot-sdk/issues/490 - [x] update cumulus --- This PR introduces transactional processing of certain xcm instructions. For the list of instructions checkout https://github.com/paritytech/polkadot-sdk/issues/490. The transactional processing is implemented as an xcm-executor config item. The two implementations in this PR are `FrameTransactionalProcessor` and `()`. The `()` implementation does no transactional processing. Each implementation of the `ProcessTransaction` trait has an `IS_TRANSACTIONAL` const that tells the XCVM if transactional processing is actually implemented. If Transactional processing is implemented, changes to touched registers should also be rolled back to prevent inconsistencies. Note for reviewers: Check out the following safety assumption: https://github.com/paritytech/polkadot-sdk/pull/1222/files#diff-4effad7d8c1c9de19fd27e18661cbf2128c8718f3b2420a27d2f816e0749ea53R30 --------- Co-authored-by:
Keith Yeung <[email protected]> Co-authored-by:
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- Jan 22, 2024
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joe petrowski authored
Clean up all the old syntax. --------- Co-authored-by: command-bot <> Co-authored-by:
Nikhil Gupta <[email protected]> Co-authored-by:
Maksym H <[email protected]>
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- 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:
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- Dec 18, 2023
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Branislav Kontur authored
This PR contains just a few clippy fixes and nits, which are, however, relaxed by workspace clippy settings here: https://github.com/paritytech/polkadot-sdk/blob/master/Cargo.toml#L483-L506 --------- Co-authored-by:
Dmitry Sinyavin <[email protected]> Co-authored-by:
ordian <[email protected]> Co-authored-by: command-bot <> Co-authored-by:
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- Dec 14, 2023
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Francisco Aguirre authored
In the move from the old `Currency` traits to the new `fungible/s` family of traits, we already had the `FungiblesAdapter` and `NonFungiblesAdapter` for multiple fungible and non fungible assets respectively. However, for handling only one fungible asset, we were missing a `FungibleAdapter`, and so used the old `CurrencyAdapter` instead. This PR aims to fill in that gap, and provide the new adapter for more updated examples. I marked the old `CurrencyAdapter` as deprecated as part of this PR, and I'll change it to the new `FungibleAdapter` in a following PR. The two stages are separated so as to not bloat this PR with some name fixes in tests. --------- Co-authored-by: command-bot <>
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- Dec 12, 2023
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Branislav Kontur authored
## Summary This pull request proposes a solution for improved control of the versioned XCM flow over the bridge (across different consensus chains) and resolves the situation where the sending chain/consensus has already migrated to a higher XCM version than the receiving chain/consensus. ## Problem/Motivation The current flow over the bridge involves a transfer from AssetHubRococo (AHR) to BridgeHubRococo (BHR) to BridgeHubWestend (BHW) and finally to AssetHubWestend (AHW), beginning with a reserve-backed transfer on AHR. In this process: 1. AHR sends XCM `ExportMessage` through `XcmpQueue`, incorporating XCM version checks using the `WrapVersion` feature, influenced by `pallet_xcm::SupportedVersion` (managed by `pallet_xcm::force_xcm_version` or version discovery). 2. BHR handles the `ExportMessage` instruction, utilizing the latest XCM version. The `HaulBlobExporter` converts the inner XCM to [`VersionedXcm::from`](https://github.com/paritytech/polkadot-sdk/blob/63ac2471aa0210f0ac9903bdd7d8f9351f9a635f/polkadot/xcm/xcm-builder/src/universal_exports.rs#L465-L467), also using the latest XCM version. However, challenges arise: - Incompatibility when BHW uses a different version than BHR. For instance, if BHR migrates to **XCMv4** while BHW remains on **XCMv3**, BHR's `VersionedXcm::from` uses `VersionedXcm::V4` variant, causing encoding issues for BHW. ``` /// Just a simulation of possible error, which could happen on BHW /// (this code is based on actual master without XCMv4) let encoded = hex_literal::hex!("0400"); println!("{:?}", VersionedXcm::<()>::decode(&mut &encoded[..])); Err(Error { cause: None, desc: "Could not decode `VersionedXcm`, variant doesn't exist" }) ``` - Similar compatibility issues exist between AHR and AHW. ## Solution This pull request introduces the following solutions: 1. **New trait `CheckVersion`** - added to the `xcm` module and exposing `pallet_xcm::SupportedVersion`. This enhancement allows checking the actual XCM version for desired destinations outside of the `pallet_xcm` module. 2. **Version Check in `HaulBlobExporter`** uses `CheckVersion` to check known/configured destination versions, ensuring compatibility. For example, in the scenario mentioned, BHR can store the version `3` for BHW. If BHR is on XCMv4, it will attempt to downgrade the message to version `3` instead of using the latest version `4`. 3. **Version Check in `pallet-xcm-bridge-hub-router`** - this check ensures compatibility with the real destination's XCM version, preventing the unnecessary sending of messages to the local bridge hub if versions are incompatible. These additions aim to improve the control and compatibility of XCM flows over the bridge and addressing issues related to version mismatches. ## Possible alternative solution _(More investigation is needed, and at the very least, it should extend to XCMv4/5. If this proves to be a viable option, I can open an RFC for XCM.)._ Add the `XcmVersion` attribute to the `ExportMessage` so that the sending chain can determine, based on what is stored in `pallet_xcm::SupportedVersion`, the version the destination is using. This way, we may not need to handle the version in `HaulBlobExporter`. ``` ExportMessage { network: NetworkId, destination: InteriorMultiLocation, xcm: Xcm<()> destination_xcm_version: Version, // <- new attritbute }, ``` ``` pub trait ExportXcm { fn validate( network: NetworkId, channel: u32, universal_source: &mut Option<InteriorMultiLocation>, destination: &mut Option<InteriorMultiLocation>, message: &mut Option<Xcm<()>>, destination_xcm_version: Version, , // <- new attritbute ) -> SendResult<Self::Ticket>; ``` ## Future Directions This PR does not fix version discovery over bridge, further investigation will be conducted here: https://github.com/paritytech/polkadot-sdk/issues/2417. ## TODO - [x] `pallet_xcm` mock for tests uses hard-coded XCM version `2` - change to 3 or lastest? - [x] fix `pallet-xcm-bridge-hub-router` - [x] fix HaulBlobExporter with version determination [here](https://github.com/paritytech/polkadot-sdk/blob/2183669d05f9b510f979a0cc3c7847707bacba2e/polkadot/xcm/xcm-builder/src/universal_exports.rs#L465) - [x] add unit-tests to the runtimes - [x] run benchmarks for `ExportMessage` - [x] extend local run scripts about `force_xcm_version(dest, version)` - [ ] when merged, prepare governance calls for Rococo/Westend - [ ] add PRDoc Part of: https://github.com/paritytech/parity-bridges-common/issues/2719 --------- Co-authored-by: command-bot <>
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- Dec 11, 2023
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Adrian Catangiu authored
For some reason original PR passed CI - when it shouldn't have. Fix `pallet-xcm` test benchmarks.
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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 28, 2023
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gupnik authored
Step in https://github.com/paritytech/polkadot-sdk/issues/171 This PR adds `derive_impl` on all `frame_system` config impls for mock runtimes. The overridden configs are maintained as of now to ensure minimal changes. --------- Co-authored-by:
Oliver Tale-Yazdi <[email protected]>
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- Nov 24, 2023
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Xiliang Chen authored
On extrinsics/call, ensure local XCM execution is complete/successful. Otherwise, fail the extrinsic so that state changes don't get committed to the db. Added regression tests that fail without the fix. fixes #2237 --------- Co-authored-by:
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- Nov 15, 2023
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Adrian Catangiu authored
Disallow reserve transfers that use teleportable fees if `(origin, fees)` matches `XcmTeleportFilter`. Add regression tests for filtering based on `XcmTeleportFilter` for both `(limited_)reserve_transfer_assets()` and `(limited_)teleport_assets` extrinsics.
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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:
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- Nov 01, 2023
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Serban Iorga authored
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- Oct 24, 2023
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Kian Paimani authored
closes https://github.com/paritytech/polkadot-sdk/issues/1882 ## Breaking Changes This PR introduces a new item to `pallet_balances::Config`: ```diff trait Config { ++ type RuntimeFreezeReasons; } ``` This value is only used to check it against `type MaxFreeze`. A similar check has been added for `MaxHolds` against `RuntimeHoldReasons`, which is already given to `pallet_balances`. In all contexts, you should pass the real `RuntimeFreezeReasons` generated by `construct_runtime` to `type RuntimeFreezeReasons`. Passing `()` would also work, but it would imply that the runtime uses no freezes at all. --------- Signed-off-by:
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- Oct 18, 2023
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Keith Yeung authoredCombination of paritytech/polkadot#7005, its addon PR paritytech/polkadot#7585 and its companion paritytech/cumulus#2433. This PR introduces a new XcmFeesToAccount struct which implements the `FeeManager` trait, and assigns this struct as the `FeeManager` in the XCM config for all runtimes. The struct simply deposits all fees handled by the XCM executor to a specified account. In all runtimes, the specified account is configured as the treasury account. XCM __delivery__ fees are now being introduced (unless the root origin is sending a message to a system parachain on behalf of the originating chain). # Note for reviewers Most file changes are tests that had to be modified to account for the new fees. Main changes are in: - cumulus/pallets/xcmp-queue/src/lib.rs <- To make it track the delivery fees exponential factor - polkadot/xcm/xcm-builder/src/fee_handling.rs <- Added. Has the FeeManager implementation - All runtime xcm_config files <- To add the FeeManager to the XCM configuration # Important note After this change, instructions that create and send a new XCM (Query*, Report*, ExportMessage, InitiateReserveWithdraw, InitiateTeleport, DepositReserveAsset, TransferReserveAsset, LockAsset and RequestUnlock) will require the corresponding origin account in the origin register to pay for transport delivery fees, and the onward message will fail to be sent if the origin account does not have the required amount. This delivery fee is on top of what we already collect as tx fees in pallet-xcm and XCM BuyExecution fees! Wallet UIs that want to expose the new delivery fee can do so using the formula: ``` delivery_fee_factor * (base_fee + encoded_msg_len * per_byte_fee) ``` where the delivery fee factor can be obtained from the corresponding pallet based on which transport you are using (UMP, HRMP or bridges), the base fee is a constant, the encoded message length from the message itself and the per byte fee is the same as the configured per byte fee for txs (i.e. `TransactionByteFee`). --------- Co-authored-by:
joe petrowski <[email protected]> Co-authored-by:
Giles Cope <[email protected]> Co-authored-by: command-bot <> Co-authored-by:
Liam Aharon <[email protected]> Co-authored-by:
Kian Paimani <[email protected]>
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- Aug 31, 2023
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Bastian Köcher authored
* Rename `polkadot-parachain` to `polkadot-parachain-primitives` While doing this it also fixes some last `rustdoc` issues and fixes another Cargo warning related to `pallet-paged-list`. * Fix compilation * ".git/.scripts/commands/fmt/fmt.sh" * Fix XCM docs --------- Co-authored-by: command-bot <>
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- Jul 14, 2023
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juangirini authored
* replace Index for Nonce * remove extra Nonce * update lockfile for {"substrate"} --------- Co-authored-by: parity-processbot <>
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- Jul 13, 2023
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gupnik authored
Moves `Block` to `frame_system` instead of `construct_runtime` and removes `Header` and `BlockNumber` (#7431) * Companion for substrate * Minor update * Formatting * Fixes for cumulus * Fixes tests in polkadot-runtime-parachains * Minor update * Removes unused import * Fixes tests in polkadot-runtime-common * Minor fix * Update roadmap/implementers-guide/src/runtime/configuration.md Co-authored-by:
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- Jul 12, 2023
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Michal Kucharczyk authored* GenesisBuild<T,I> deprecated. BuildGenesisConfig added * fmt * fixes * more fixes * more fixes * fixes * update lockfile for {"substrate"} * fix --------- Co-authored-by: parity-processbot <>
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- Jun 05, 2023
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Keith Yeung authored
* Implement AliasOrigin processing in XCVM * add builder types and first test * switch to more general builder types * clone target for RemovePrefixAccountId32 * change builder types * change AliasForeignAccountId32 and add test for AliasCase * add Aliasers type to xcm configs * add benchmark * benchmark fix * add benchmark function for runtimes * fix alias_origin result types * fix benchmark test * add runtime-benchmarks feature in pallet-xcm-benchmarks * fmt * remove AliasCase, add test and fmt * address feedback * ".git/.scripts/commands/bench/bench.sh" xcm kusama pallet_xcm_benchmarks::generic * ".git/.scripts/commands/bench/bench.sh" xcm westend pallet_xcm_benchmarks::generic * ".git/.scripts/commands/bench/bench.sh" xcm rococo pallet_xcm_benchmarks::generic * address feedback * lock * ".git/.scripts/commands/bench/bench.sh" xcm kusama pallet_xcm_benchmarks::generic * ".git/.scripts/commands/bench/bench.sh" xcm westend pallet_xcm_benchmarks::generic * ".git/.scripts/commands/bench/bench.sh" xcm rococo pallet_xcm_benchmarks::generic * change doc * fmt --------- Co-authored-by:
Just van Stam <[email protected]> Co-authored-by:
Just van Stam <[email protected]> Co-authored-by: command-bot <>
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- May 31, 2023
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Francisco Aguirre authored
* Move XCM query functionality to trait * Fix tests * Add PayOverXcm implementation * fix the PayOverXcm trait to compile * moved doc comment out of trait implmeentation and to the trait * PayOverXCM documentation * Change documentation a bit * Added empty benchmark methods implementation and changed docs * update PayOverXCM to convert AccountIds to MultiLocations * Implement benchmarking method * Change v3 to latest * Descend origin to an asset sender (#6970) * descend origin to an asset sender * sender as tuple of dest and sender * Add more variants to the QueryResponseStatus enum * Change Beneficiary to Into<[u8; 32]> * update PayOverXcm to return concrete errors and use AccountId as sender * use polkadot-primitives for AccountId * fix dependency to use polkadot-core-primitives * force Unpaid instruction to the top of the instructions list * modify report_outcome to accept interior argument * use new_query directly for building final xcm query, instead of report_outcome * fix usage of new_query to use the XcmQueryHandler * fix usage of new_query to use the XcmQueryHandler * tiny method calling fix * xcm query handler (#7198) * drop redundant query status * rename ReportQueryStatus to OuterQueryStatus * revert rename of QueryResponseStatus * update mapping * Update xcm/xcm-builder/src/pay.rs Co-authored-by:
Gavin Wood <[email protected]> * Updates * Docs * Fix benchmarking stuff * Destination can be determined based on asset_kind * Tweaking API to minimise clones * Some repotting and docs --------- Co-authored-by:
Anthony Alaribe <[email protected]> Co-authored-by:
Muharem Ismailov <[email protected]> Co-authored-by:
Anthony Alaribe <[email protected]> Co-authored-by:
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- May 24, 2023
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Bastian Köcher authored
* Companion: Substrate#13869 https://github.com/paritytech/substrate/pull/13869 * update lockfile for {"substrate"} * ".git/.scripts/commands/fmt/fmt.sh" --------- Co-authored-by: parity-processbot <>
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- May 05, 2023
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Muharem Ismailov authored
* xcm remote lock consumers * update xcm pallet config setups * fix import * update xcm pallet config setups * rename consumers to users * rename * rename users to consumers, more docs * correct doc --------- Co-authored-by: parity-processbot <>
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- Apr 08, 2023
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s0me0ne-unkn0wn authored
* Happy New Year! * Remove year entierly Co-authored-by:
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- Mar 23, 2023
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Just van Stam authored
* Ensure for a configurable origin in XCM (#6442), cherry picked from 5ae05e1a957857c449a43d8759a21292d03fd049 Add new associated type, AdminOrigin, bounded by EnsureOrigin trait in XCM pallet. Replace ensure_root() with ensure_origin() from a EnsureOrigin trait. Set AdminOrigin as EnsureRoot<AccountId> in xcm configs. * cargo fmt * small stylistic change --------- Co-authored-by:serkul <[email protected]>
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- Mar 20, 2023
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Gavin Wood authored
* Some renames * Fix * Fix build for new APIs * Remove diener * Fixes * Fixes * Fix integration tests * Fixes * fix nis issuance * Update Cargo.toml * Polkadot doesn't have freezes/holds yet * No networks use freezes/holds * update lockfile for {"substrate"} * Fix tests There are more failing tests; just starting with the easy ones. Reserved balance does not count towards ED anymore, therefore reducing all the reserves by ED (1). Signed-off-by:
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- Mar 13, 2023
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Vivek Pandya authored
* Remove use of Store trait from runtime directory * Remove Store trait usage from xcm directory * Run cargo fmt * update lockfile for {"substrate"} --------- 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:
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:
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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- Dec 19, 2022
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Oliver Tale-Yazdi authored* cargo update -p sp-io Signed-off-by:
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- Sep 20, 2022
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Sergej Sakac authored
* Rename Origin * fmt * fixes * more fixes * fix * more fixing * small fixes * last touches * update lockfile for {"substrate"} Co-authored-by:
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- Sep 12, 2022
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Sergej Sakac authored
* Companion for #11981 * more renaming * fmt * fixes * add generic type * Companion for #11831 * fix * revert changes * Delete rename-outer-enum.diff * revert * Update run_benches_for_runtime.sh * rename type Call & type Event * passing tests * fmt * small fixes * commit * fix * fmt * commit * error fixes * fix * small fix in test * Update lib.rs * Update lib.rs * Update lib.rs * Update lib.rs * Update lib.rs * Update lib.rs * Update lib.rs * remove RuntimeCall from pallet_grandpa * last fix * commit * rename * merge fix * update lockfile for {"substrate"} * cargo +nightly fmt * fix Co-authored-by: parity-processbot <> Co-authored-by:
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