Crate pallet_transaction_payment[−][src]

Transaction Payment Module

This module provides the basic logic needed to pay the absolute minimum amount needed for a transaction to be included. This includes:

weight fee: A fee proportional to amount of weight a transaction consumes.
length fee: A fee proportional to the encoded length of the transaction.
tip: An optional tip. Tip increases the priority of the transaction, giving it a higher chance to be included by the transaction queue.

Additionally, this module allows one to configure:

The mapping between one unit of weight to one unit of fee via Trait::WeightToFee.
A means of updating the fee for the next block, via defining a multiplier, based on the final state of the chain at the end of the previous block. This can be configured via Trait::FeeMultiplierUpdate

ChargeTransactionPayment	Require the transactor pay for themselves and maybe include a tip to gain additional priority in the queue.
GenesisConfig	Genesis config for the module, allow to build genesis storage.
Module
NextFeeMultiplier
TargetedFeeAdjustment	A struct to update the weight multiplier per block. It implements `Convert<Multiplier, Multiplier>`, meaning that it can convert the previous multiplier to the next one. This should be called on `on_finalize` of a block, prior to potentially cleaning the weight data from the system module.

Call	Dispatchable calls.

MultiplierUpdate	Something that can convert the current multiplier to the next one.
Trait

Fee multiplier.