mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-31 09:51:02 +00:00
Adrian Catangiu
18257373b3
## 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 <franciscoaguirreperez@gmail.com> Co-authored-by: Branislav Kontur <bkontur@gmail.com>
35 lines
1.9 KiB
TOML
35 lines
1.9 KiB
TOML
[package]
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name = "asset-hub-rococo-integration-tests"
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version = "1.0.0"
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authors.workspace = true
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edition.workspace = true
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license = "Apache-2.0"
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description = "Asset Hub Rococo runtime integration tests with xcm-emulator"
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publish = false
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[dependencies]
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codec = { package = "parity-scale-codec", version = "3.4.0", default-features = false }
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assert_matches = "1.5.0"
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# Substrate
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sp-runtime = { path = "../../../../../../../substrate/primitives/runtime", default-features = false}
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frame-support = { path = "../../../../../../../substrate/frame/support", default-features = false}
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pallet-balances = { path = "../../../../../../../substrate/frame/balances", default-features = false}
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pallet-assets = { path = "../../../../../../../substrate/frame/assets", default-features = false}
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pallet-asset-conversion = { path = "../../../../../../../substrate/frame/asset-conversion", default-features = false}
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pallet-message-queue = { path = "../../../../../../../substrate/frame/message-queue", default-features = false }
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# Polkadot
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xcm = { package = "staging-xcm", path = "../../../../../../../polkadot/xcm", default-features = false}
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pallet-xcm = { path = "../../../../../../../polkadot/xcm/pallet-xcm", default-features = false}
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xcm-executor = { package = "staging-xcm-executor", path = "../../../../../../../polkadot/xcm/xcm-executor", default-features = false}
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rococo-runtime = { path = "../../../../../../../polkadot/runtime/rococo" }
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# Cumulus
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asset-test-utils = { path = "../../../../../runtimes/assets/test-utils" }
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parachains-common = { path = "../../../../../../parachains/common" }
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asset-hub-rococo-runtime = { path = "../../../../../runtimes/assets/asset-hub-rococo" }
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emulated-integration-tests-common = { path = "../../../common", default-features = false }
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penpal-runtime = { path = "../../../../../runtimes/testing/penpal" }
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rococo-system-emulated-network ={ path = "../../../networks/rococo-system" }
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