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More xcm::v4 cleanup and xcm_fee_payment_runtime_api::XcmPaymentApi nits #4355

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merged 3 commits into from
May 2, 2024
Merged

More xcm::v4 cleanup and xcm_fee_payment_runtime_api::XcmPaymentApi nits #4355

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fcb4a89
Change `xcm::v4` to `xcm::prelude` imports for coretime
bkontur May 2, 2024
a52859a
Change `query_acceptable_payment_assets` / `query_weight_to_asset_fee…
bkontur May 2, 2024
5b14660
Add `xcm_fee_payment_runtime_api::XcmPaymentApi` to the AssetHubRococ…
bkontur May 2, 2024
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32 changes: 20 additions & 12 deletions polkadot/runtime/rococo/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1765,24 +1765,32 @@ sp_api::impl_runtime_apis! {

impl xcm_fee_payment_runtime_api::XcmPaymentApi<Block> for Runtime {
fn query_acceptable_payment_assets(xcm_version: xcm::Version) -> Result<Vec<VersionedAssetId>, XcmPaymentApiError> {
if !matches!(xcm_version, 3 | 4) {
return Err(XcmPaymentApiError::UnhandledXcmVersion);
}
Ok([VersionedAssetId::V4(xcm_config::TokenLocation::get().into())]
let acceptable = vec![
// native token
VersionedAssetId::from(AssetId(xcm_config::TokenLocation::get()))
];

Ok(acceptable
.into_iter()
.filter_map(|asset| asset.into_version(xcm_version).ok())
.collect())
}

fn query_weight_to_asset_fee(weight: Weight, asset: VersionedAssetId) -> Result<u128, XcmPaymentApiError> {
let local_asset = VersionedAssetId::V4(xcm_config::TokenLocation::get().into());
let asset = asset
.into_version(4)
.map_err(|_| XcmPaymentApiError::VersionedConversionFailed)?;

if asset != local_asset { return Err(XcmPaymentApiError::AssetNotFound); }

Ok(WeightToFee::weight_to_fee(&weight))
match asset.try_as::<AssetId>() {
Ok(asset_id) if asset_id.0 == xcm_config::TokenLocation::get() => {
// for native token
Ok(WeightToFee::weight_to_fee(&weight))
},
Ok(asset_id) => {
log::trace!(target: "xcm::xcm_fee_payment_runtime_api", "query_weight_to_asset_fee - unhandled asset_id: {asset_id:?}!");
Err(XcmPaymentApiError::AssetNotFound)
},
Err(_) => {
log::trace!(target: "xcm::xcm_fee_payment_runtime_api", "query_weight_to_asset_fee - failed to convert asset: {asset:?}!");
Err(XcmPaymentApiError::VersionedConversionFailed)
}
}
}

fn query_xcm_weight(message: VersionedXcm<()>) -> Result<Weight, XcmPaymentApiError> {
Expand Down
32 changes: 20 additions & 12 deletions polkadot/runtime/westend/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2199,24 +2199,32 @@ sp_api::impl_runtime_apis! {

impl xcm_fee_payment_runtime_api::XcmPaymentApi<Block> for Runtime {
fn query_acceptable_payment_assets(xcm_version: xcm::Version) -> Result<Vec<VersionedAssetId>, XcmPaymentApiError> {
if !matches!(xcm_version, 3 | 4) {
return Err(XcmPaymentApiError::UnhandledXcmVersion);
}
Ok([VersionedAssetId::V4(xcm_config::TokenLocation::get().into())]
let acceptable = vec![
// native token
VersionedAssetId::from(AssetId(xcm_config::TokenLocation::get()))
];

Ok(acceptable
.into_iter()
.filter_map(|asset| asset.into_version(xcm_version).ok())
.collect())
}

fn query_weight_to_asset_fee(weight: Weight, asset: VersionedAssetId) -> Result<u128, XcmPaymentApiError> {
let local_asset = VersionedAssetId::V4(xcm_config::TokenLocation::get().into());
let asset = asset
.into_version(4)
.map_err(|_| XcmPaymentApiError::VersionedConversionFailed)?;

if asset != local_asset { return Err(XcmPaymentApiError::AssetNotFound); }

Ok(WeightToFee::weight_to_fee(&weight))
match asset.try_as::<AssetId>() {
Ok(asset_id) if asset_id.0 == xcm_config::TokenLocation::get() => {
// for native token
Ok(WeightToFee::weight_to_fee(&weight))
},
Ok(asset_id) => {
log::trace!(target: "xcm::xcm_fee_payment_runtime_api", "query_weight_to_asset_fee - unhandled asset_id: {asset_id:?}!");
Err(XcmPaymentApiError::AssetNotFound)
},
Err(_) => {
log::trace!(target: "xcm::xcm_fee_payment_runtime_api", "query_weight_to_asset_fee - failed to convert asset: {asset:?}!");
Err(XcmPaymentApiError::VersionedConversionFailed)
}
}
Comment on lines +2214 to +2227
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Looks like this code is duplicated for Rococo and Westend. Could we move it into a method and reuse it ?

Seems to also be the case for query_acceptable_payment_assets.

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It looks duplicated now, because everywhere we expose just a native token, but for AHs we could add at least USDT/USDC or maybe all sufficient assets, then this code would look different. Also I am not sure about other runtimes and their WeightToFee impls.

Yes, I was thinking about extracting e.g. Vec conversion with into_version at least, but not sure about the rest. What do you think? Any suggestion?

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Oh, I see. Then I think we can see how we can make this more generic later when we add this for multiple runtimes.

}

fn query_xcm_weight(message: VersionedXcm<()>) -> Result<Weight, XcmPaymentApiError> {
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2 changes: 1 addition & 1 deletion polkadot/xcm/xcm-fee-payment-runtime-api/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ sp_api::decl_runtime_apis! {
///
/// # Arguments
///
/// * `xcm_version`: Version.
/// * `xcm_version`: desired XCM `Version` of `VersionedAssetId`.
fn query_acceptable_payment_assets(xcm_version: Version) -> Result<Vec<VersionedAssetId>, Error>;

/// Returns a weight needed to execute a XCM.
Expand Down