pezkuwichain/pezkuwi-subxt
1
0
Fork 0
mirror of https://github.com/pezkuwichain/pezkuwi-subxt.git synced 2026-05-31 02:51:01 +00:00
Code Issues Packages Projects Releases Wiki Activity

XCM: Automatic Version Negotiation (#3736)

Browse Source 
* XCM: Automatic Version Negotiation

* Introduce the version instructions and subscription trait

* Notification and subscription data migration

* Version change subscriptions

* Fixes

* Formatting

* Spelling

* Fixes

* Fixes

* Automatic unsubscription

* Formatting

* Expose remote origin in VM and ensure it is unchanged from actual origin in subscription instructions.

* Barrier

* Unsubscription extrinsic

* Remove top_level param

* Formatting

* Fixes

* Automatic subscription

* Formatting

* Spelling

* Unit tests for XCM executor

* Formatting

* Spellin

* Unit test for XCM pallet subscriber side

* Formatting

* More tests

* Formatting

* Fixes

* Subscription-side tests

* Formatting

* Unit tests for XCM pallet

* Formatting

* Update roadmap/implementers-guide/src/types/overseer-protocol.md

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Remove commented code

* Grumbles

* Multi-stage XCM version migration

* Formatting

* v1 subscriptions backport

* Warning

* Spelling

* Fix grumbles

* Formatting

* Avoid running through old notifications

* Formatting

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
This commit is contained in:
Gavin Wood
2021-09-02 18:47:38 +02:00
committed by GitHub
parent 446aa6777e
commit 82ffe7dd17
27 changed files with 1503 additions and 175 deletions
Download Patch File Download Diff File Expand all files Collapse all files
polkadot/xcm/xcm-builder/src/barriers.rs
+20 -7
View File
@@ -31,7 +31,6 @@ pub struct TakeWeightCredit;
impl ShouldExecute for TakeWeightCredit {
fn should_execute<Call>(
_origin: &MultiLocation,
_top_level: bool,
_message: &mut Xcm<Call>,
max_weight: Weight,
weight_credit: &mut Weight,
@@ -44,19 +43,17 @@ impl ShouldExecute for TakeWeightCredit {
/// Allows execution from `origin` if it is contained in `T` (i.e. `T::Contains(origin)`) taking
/// payments into account.
///
/// Only allows for `TeleportAsset`, `WithdrawAsset` and `ReserveAssetDeposit` XCMs because they are
/// the only ones that place assets in the Holding Register to pay for execution.
/// Only allows for `TeleportAsset`, `WithdrawAsset`, `ClaimAsset` and `ReserveAssetDeposit` XCMs
/// because they are the only ones that place assets in the Holding Register to pay for execution.
pub struct AllowTopLevelPaidExecutionFrom<T>(PhantomData<T>);
impl<T: Contains<MultiLocation>> ShouldExecute for AllowTopLevelPaidExecutionFrom<T> {
fn should_execute<Call>(
origin: &MultiLocation,
top_level: bool,
message: &mut Xcm<Call>,
max_weight: Weight,
_weight_credit: &mut Weight,
) -> Result<(), ()> {
ensure!(T::contains(origin), ());
ensure!(top_level, ());
let mut iter = message.0.iter_mut();
let i = iter.next().ok_or(())?;
match i {
@@ -90,7 +87,6 @@ pub struct AllowUnpaidExecutionFrom<T>(PhantomData<T>);
impl<T: Contains<MultiLocation>> ShouldExecute for AllowUnpaidExecutionFrom<T> {
fn should_execute<Call>(
origin: &MultiLocation,
_top_level: bool,
_message: &mut Xcm<Call>,
_max_weight: Weight,
_weight_credit: &mut Weight,
@@ -117,7 +113,6 @@ pub struct AllowKnownQueryResponses<ResponseHandler>(PhantomData<ResponseHandler
impl<ResponseHandler: OnResponse> ShouldExecute for AllowKnownQueryResponses<ResponseHandler> {
fn should_execute<Call>(
origin: &MultiLocation,
_top_level: bool,
message: &mut Xcm<Call>,
_max_weight: Weight,
_weight_credit: &mut Weight,
@@ -130,3 +125,21 @@ impl<ResponseHandler: OnResponse> ShouldExecute for AllowKnownQueryResponses<Res
}
}
}
/// Allows execution from `origin` if it is just a straight `SubscribeVerison` or
/// `UnsubscribeVersion` instruction.
pub struct AllowSubscriptionsFrom<T>(PhantomData<T>);
impl<T: Contains<MultiLocation>> ShouldExecute for AllowSubscriptionsFrom<T> {
fn should_execute<Call>(
origin: &MultiLocation,
message: &mut Xcm<Call>,
_max_weight: Weight,
_weight_credit: &mut Weight,
) -> Result<(), ()> {
ensure!(T::contains(origin), ());
match (message.0.len(), message.0.first()) {
(1, Some(SubscribeVersion { .. })) | (1, Some(UnsubscribeVersion)) => Ok(()),
_ => Err(()),
}
}
}