Branislav Kontur
e3c97e4860
# Description ## Summary Previously, the `pallet_xcm::do_reserve_transfer_assets` and `pallet_xcm::do_teleport_assets` functions relied on weight estimation for remote chain execution, which was based on guesswork derived from the local chain. This approach led to complications for runtimes that did not provide or support specific [XCM configurations](https://github.com/paritytech/polkadot-sdk/blob/7cbe0c76ef8fd2aabf9f07de0156941ce3ed44b0/polkadot/xcm/xcm-executor/src/config.rs#L43-L47) for `IsReserve` or `IsTeleporter`. Consequently, such runtimes had to resort to implementing hard-coded weights for XCM instructions like `reserve_asset_deposited` or `receive_teleported_asset` to support extrinsics such as `pallet_xcm::reserve_transfer_assets` and `pallet_xcm::teleport_assets`, which depended on remote weight estimation. The issue of remote weight estimation was addressed and resolved by [Pull Request #1645](https://github.com/paritytech/polkadot-sdk/pull/1645), which removed the need for remote weight estimation. ## Solution As a continuation of this improvement, the current PR proposes further cleanup by removing unnecessary hard-coded values and rectifying benchmark results with `Weight::MAX` that previously used `T::BlockWeights::get().max_block` as an override for unsupported XCM instructions like `ReserveAssetDeposited` and `ReceiveTeleportedAsset`. ## Questions - [x] Can we remove now also `Hardcoded till the XCM pallet is fixed` for `deposit_asset`? E.g. for AssetHubKusama [here](https://github.com/paritytech/polkadot-sdk/blob/7cbe0c76ef8fd2aabf9f07de0156941ce3ed44b0/cumulus/parachains/runtimes/assets/asset-hub-kusama/src/weights/xcm/mod.rs#L129-L134) - [x] Are comments like [this](https://github.com/paritytech/polkadot-sdk/blob/7cbe0c76ef8fd2aabf9f07de0156941ce3ed44b0/polkadot/runtime/kusama/src/weights/xcm/mod.rs#L94) `// Kusama doesn't support ReserveAssetDeposited, so this benchmark has a default weight` still relevant? Shouldnt be removed/changed? ## TODO - [x] `bench bot` regenerate xcm weights for all runtimes - [x] remove hard-coded stuff from system parachain weight files - [ ] when merged, open `polkadot-fellow/runtimes` PR ## References Fixes #1132 Closes #1132 Old polkadot repo [PR](https://github.com/paritytech/polkadot/pull/7546) --------- Co-authored-by: command-bot <>
NOTE: We have recently made significant changes to our repository structure. In order to streamline our development process and foster better contributions, we have merged three separate repositories Cumulus, Substrate and Polkadot into this repository. Read more about the changes here.
Polkadot SDK
The Polkadot SDK repository provides all the resources needed to start building on the Polkadot network, a multi-chain blockchain platform that enables different blockchains to interoperate and share information in a secure and scalable way. The Polkadot SDK comprises three main pieces of software:
Polkadot
Implementation of a node for the https://polkadot.network in Rust, using the Substrate framework. This directory
currently contains runtimes for the Polkadot, Kusama, Westend, and Rococo networks. In the future, these will be
relocated to the runtimes repository.
Substrate
Substrate is the primary blockchain SDK used by developers to create the parachains that make up the Polkadot network. Additionally, it allows for the development of self-sovereign blockchains that operate completely independently of Polkadot.
Cumulus
Cumulus is a set of tools for writing Substrate-based Polkadot parachains.
Upstream Dependencies
Below are the primary upstream dependencies utilized in this project:
Security
The security policy and procedures can be found in docs/SECURITY.md.
Contributing & Code of Conduct
Ensure you follow our contribution guidelines. In every interaction and contribution, this project adheres to the Contributor Covenant Code of Conduct.
Additional Resources
- For monitoring upcoming changes and current proposals related to the technical implementation of the Polkadot network,
visit the
Requests for Comment (RFC)repository. While it's maintained by the Polkadot Fellowship, the RFC process welcomes contributions from everyone.