Crate cumulus_primitives_utility

Helper datatypes for cumulus. This includes the ParentAsUmp routing type which will route messages into an UpwardMessageSender if the destination is Parent.

Structs

• ParentAsUmp
  Xcm router which recognises the Parent destination and handles it by sending the message into the given UMP UpwardMessageSender implementation. Thus this essentially adapts an UpwardMessageSender trait impl into a SendXcm trait impl.
• SwapFirstAssetTrader
  Provides an implementation of WeightTrader to charge for weight using the first asset specified in the payment argument.
• TakeFirstAssetTrader
  Charges for execution in the first asset of those selected for fee payment Only succeeds for Concrete Fungible Assets First tries to convert the this Asset into a local assetId Then charges for this assetId as described by FeeCharger Weight, paid balance, local asset Id and the location is stored for later refund purposes Important: Errors if the Trader is being called twice by 2 BuyExecution instructions Alternatively we could just return payment in the aforementioned case
• XcmFeesTo32ByteAccount
  XCM fee depositor to which we implement the TakeRevenue trait. It receives a Transact implemented argument and a 32 byte convertible AccountId, and the fee receiver account’s FungiblesMutateAdapter should be identical to that implemented by WithdrawAsset.

Traits

• ChargeWeightInFungibles
  ChargeWeightInFungibles trait, which converts a given amount of weight and an assetId, and it returns the balance amount that should be charged in such assetId for that amount of weight