Trait polkadot_runtime_parachains::FeeTracker

pub trait FeeTracker {
    type Id;

    // Required methods
    fn get_fee_factor(id: Self::Id) -> FixedU128;
    fn increase_fee_factor(
        id: Self::Id,
        message_size_factor: FixedU128,
    ) -> FixedU128;
    fn decrease_fee_factor(id: Self::Id) -> FixedU128;
}

Trait for tracking message delivery fees on a transport protocol.

Required Associated Types

type Id

Type used for assigning different fee factors to different destinations

Required Methods

fn get_fee_factor(id: Self::Id) -> FixedU128

Returns the evolving exponential fee factor which will be used to calculate the delivery fees.

fn increase_fee_factor( id: Self::Id, message_size_factor: FixedU128, ) -> FixedU128

Increases the delivery fee factor by a factor based on message size and records the result.

Returns the new delivery fee factor after the increase.

fn decrease_fee_factor(id: Self::Id) -> FixedU128

Decreases the delivery fee factor by a constant factor and records the result.

Does not reduce the fee factor below the initial value, which is currently set as 1.

Returns the new delivery fee factor after the decrease.

Object Safety

This trait is not object safe.

Implementors

impl<T: Config> FeeTracker for Pallet<T>

type Id = Id