git.delta.rocks / unique-network / refs/commits / 44d02634621c

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617#![cfg_attr(not(feature = "std"), no_std)]1819use core::marker::PhantomData;2021use frame_support::{22	pallet,23	weights::{WeightToFeePolynomial, WeightToFeeCoefficients, WeightToFeeCoefficient, Weight},24	traits::Get,25};26use sp_arithmetic::traits::{BaseArithmetic, Unsigned};27use smallvec::smallvec;2829pub use pallet::*;30use sp_core::U256;31use sp_runtime::Perbill;3233#[pallet]34mod pallet {35	use super::*;36	use frame_support::{37		traits::Get,38		pallet_prelude::{StorageValue, ValueQuery, DispatchResult},39	};40	use frame_system::{pallet_prelude::OriginFor, ensure_root};4142	#[pallet::config]43	pub trait Config: frame_system::Config {44		#[pallet::constant]45		type DefaultWeightToFeeCoefficient: Get<u32>;46		#[pallet::constant]47		type DefaultMinGasPrice: Get<u64>;48	}4950	#[pallet::storage]51	pub type WeightToFeeCoefficientOverride<T: Config> = StorageValue<52		Value = u32,53		QueryKind = ValueQuery,54		OnEmpty = T::DefaultWeightToFeeCoefficient,55	>;5657	#[pallet::storage]58	pub type MinGasPriceOverride<T: Config> =59		StorageValue<Value = u64, QueryKind = ValueQuery, OnEmpty = T::DefaultMinGasPrice>;6061	#[pallet::call]62	impl<T: Config> Pallet<T> {63		#[pallet::weight(T::DbWeight::get().writes(1))]64		pub fn set_weight_to_fee_coefficient_override(65			origin: OriginFor<T>,66			coeff: Option<u32>,67		) -> DispatchResult {68			let _sender = ensure_root(origin)?;69			if let Some(coeff) = coeff {70				<WeightToFeeCoefficientOverride<T>>::set(coeff);71			} else {72				<WeightToFeeCoefficientOverride<T>>::kill();73			}74			Ok(())75		}7677		#[pallet::weight(T::DbWeight::get().writes(1))]78		pub fn set_min_gas_price_override(79			origin: OriginFor<T>,80			coeff: Option<u64>,81		) -> DispatchResult {82			let _sender = ensure_root(origin)?;83			if let Some(coeff) = coeff {84				<MinGasPriceOverride<T>>::set(coeff);85			} else {86				<MinGasPriceOverride<T>>::kill();87			}88			Ok(())89		}90	}9192	#[pallet::pallet]93	#[pallet::generate_store(pub(super) trait Store)]94	pub struct Pallet<T>(_);95}9697pub struct WeightToFee<T, B>(PhantomData<(T, B)>);9899impl<T, B> WeightToFeePolynomial for WeightToFee<T, B>100where101	T: Config,102	B: BaseArithmetic + From<u32> + Copy + Unsigned,103{104	type Balance = B;105106	fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {107		smallvec!(WeightToFeeCoefficient {108			coeff_integer: <WeightToFeeCoefficientOverride<T>>::get().into(),109			coeff_frac: Perbill::zero(),110			negative: false,111			degree: 1,112		})113	}114}115116pub struct FeeCalculator<T>(PhantomData<T>);117impl<T: Config> fp_evm::FeeCalculator for FeeCalculator<T> {118	fn min_gas_price() -> (U256, Weight) {119		(120			<MinGasPriceOverride<T>>::get().into(),121			T::DbWeight::get().reads(1),122		)123	}124}