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Distinguish when MinXcmFee is not registered and FeeNotEnough #753

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Merged
zqhxuyuan merged 6 commits into from
Jun 5, 2022
Merged

Distinguish when MinXcmFee is not registered and FeeNotEnough #753

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92e83dc
Make xcm min fee return option
ghzlatarev May 26, 2022
b34836e
Fix test
ghzlatarev May 26, 2022
fd97173
Add default impl for MinXcmFee::GetByKey
ghzlatarev May 30, 2022
21ec159
Correct another accourance of MinXcmFee impl in comments
ghzlatarev May 30, 2022
c95109f
Move default impl to xcm-support. Cooments and fmt
ghzlatarev May 31, 2022
d64f59c
Fix test in asset-registry
ghzlatarev May 31, 2022
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Make xcm min fee return option 
Signed-off-by: Georgi Zlatarev <[email protected]>
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@ghzlatarev
ghzlatarev committed May 26, 2022
commit 92e83dcbeda0cd690ac6e8c151efc77911c6cd2d
6 changes: 4 additions & 2 deletions xtokens/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,7 @@ pub mod module {
type SelfLocation: Get<MultiLocation>;

/// Minimum xcm execution fee paid on destination chain.
type MinXcmFee: GetByKey<MultiLocation, u128>;
type MinXcmFee: GetByKey<MultiLocation, Option<u128>>;

/// XCM executor.
type XcmExecutor: ExecuteXcm<Self::Call>;
Expand Down Expand Up @@ -173,6 +173,8 @@ pub mod module {
FeeNotEnough,
/// Not supported MultiLocation
NotSupportedMultiLocation,
/// MinXcmFee not registered for certain reserve location
MinXcmFeeNotRegistered,
}

#[pallet::hooks]
Expand Down Expand Up @@ -538,7 +540,7 @@ pub mod module {
ensure!(non_fee_reserve == dest.chain_part(), Error::<T>::InvalidAsset);

let reserve_location = non_fee_reserve.clone().ok_or(Error::<T>::AssetHasNoReserve)?;
let min_xcm_fee = T::MinXcmFee::get(&reserve_location);
let min_xcm_fee = T::MinXcmFee::get(&reserve_location).ok_or(Error::<T>::MinXcmFeeNotRegistered)?;

// min xcm fee should less than user fee
let fee_to_dest: MultiAsset = (fee.id.clone(), min_xcm_fee).into();
Expand Down