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Transactional processing for XCM (#1222)

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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 <kungfukeith11@gmail.com>
Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>
Co-authored-by: command-bot <>
This commit is contained in:
Just van Stam
2024-01-24 17:30:27 +01:00
committed by GitHub
parent a78ff7d770
commit 50eb12cf2f
54 changed files with 675 additions and 295 deletions
Download Patch File Download Diff File Expand all files Collapse all files
polkadot/xcm/xcm-simulator/example/src/parachain.rs
+5 -3
View File
@@ -40,9 +40,10 @@ use polkadot_parachain_primitives::primitives::{
use xcm::{latest::prelude::*, VersionedXcm};
use xcm_builder::{
Account32Hash, AccountId32Aliases, AllowUnpaidExecutionFrom, ConvertedConcreteId,
EnsureXcmOrigin, FixedRateOfFungible, FixedWeightBounds, FungibleAdapter, IsConcrete,
NativeAsset, NoChecking, NonFungiblesAdapter, ParentIsPreset, SiblingParachainConvertsVia,
SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation,
EnsureXcmOrigin, FixedRateOfFungible, FixedWeightBounds, FrameTransactionalProcessor,
FungibleAdapter, IsConcrete, NativeAsset, NoChecking, NonFungiblesAdapter, ParentIsPreset,
SiblingParachainConvertsVia, SignedAccountId32AsNative, SignedToAccountId32,
SovereignSignedViaLocation,
};
use xcm_executor::{
traits::{ConvertLocation, JustTry},
@@ -250,6 +251,7 @@ impl Config for XcmConfig {
type CallDispatcher = RuntimeCall;
type SafeCallFilter = Everything;
type Aliasers = Nothing;
type TransactionalProcessor = FrameTransactionalProcessor;
}
#[frame_support::pallet]
polkadot/xcm/xcm-simulator/example/src/relay_chain.rs
+4 -3
View File
@@ -36,9 +36,9 @@ use xcm::latest::prelude::*;
use xcm_builder::{
Account32Hash, AccountId32Aliases, AllowUnpaidExecutionFrom, AsPrefixedGeneralIndex,
ChildParachainAsNative, ChildParachainConvertsVia, ChildSystemParachainAsSuperuser,
ConvertedConcreteId, FixedRateOfFungible, FixedWeightBounds, FungibleAdapter, IsConcrete,
NoChecking, NonFungiblesAdapter, SignedAccountId32AsNative, SignedToAccountId32,
SovereignSignedViaLocation,
ConvertedConcreteId, FixedRateOfFungible, FixedWeightBounds, FrameTransactionalProcessor,
FungibleAdapter, IsConcrete, NoChecking, NonFungiblesAdapter, SignedAccountId32AsNative,
SignedToAccountId32, SovereignSignedViaLocation,
};
use xcm_executor::{traits::JustTry, Config, XcmExecutor};
@@ -198,6 +198,7 @@ impl Config for XcmConfig {
type CallDispatcher = RuntimeCall;
type SafeCallFilter = Everything;
type Aliasers = Nothing;
type TransactionalProcessor = FrameTransactionalProcessor;
}
pub type LocalOriginToLocation = SignedToAccountId32<RuntimeOrigin, AccountId, RelayNetwork>;