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, OptionQuery}, BoundedVec,39	};40	use frame_system::{pallet_prelude::OriginFor, ensure_root};41	use xcm::v1::MultiLocation;4243	#[pallet::config]44	pub trait Config: frame_system::Config {45		#[pallet::constant]46		type DefaultWeightToFeeCoefficient: Get<u32>;4748		#[pallet::constant]49		type DefaultMinGasPrice: Get<u64>;5051		#[pallet::constant]52		type MaxOverridedAllowedLocations: Get<u32>;53	}5455	#[pallet::storage]56	pub type WeightToFeeCoefficientOverride<T: Config> = StorageValue<57		Value = u32,58		QueryKind = ValueQuery,59		OnEmpty = T::DefaultWeightToFeeCoefficient,60	>;6162	#[pallet::storage]63	pub type MinGasPriceOverride<T: Config> =64		StorageValue<Value = u64, QueryKind = ValueQuery, OnEmpty = T::DefaultMinGasPrice>;6566	#[pallet::storage]67	pub type XcmAllowedLocationsOverride<T: Config> = StorageValue<68		Value = BoundedVec<MultiLocation, T::MaxOverridedAllowedLocations>,69		QueryKind = OptionQuery,70	>;7172	#[pallet::call]73	impl<T: Config> Pallet<T> {74		#[pallet::weight(T::DbWeight::get().writes(1))]75		pub fn set_weight_to_fee_coefficient_override(76			origin: OriginFor<T>,77			coeff: Option<u32>,78		) -> DispatchResult {79			let _sender = ensure_root(origin)?;80			if let Some(coeff) = coeff {81				<WeightToFeeCoefficientOverride<T>>::set(coeff);82			} else {83				<WeightToFeeCoefficientOverride<T>>::kill();84			}85			Ok(())86		}8788		#[pallet::weight(T::DbWeight::get().writes(1))]89		pub fn set_min_gas_price_override(90			origin: OriginFor<T>,91			coeff: Option<u64>,92		) -> DispatchResult {93			let _sender = ensure_root(origin)?;94			if let Some(coeff) = coeff {95				<MinGasPriceOverride<T>>::set(coeff);96			} else {97				<MinGasPriceOverride<T>>::kill();98			}99			Ok(())100		}101102		#[pallet::weight(T::DbWeight::get().writes(1))]103		pub fn set_xcm_allowed_locations(104			origin: OriginFor<T>,105			locations: Option<BoundedVec<MultiLocation, T::MaxOverridedAllowedLocations>>,106		) -> DispatchResult {107			let _sender = ensure_root(origin)?;108			<XcmAllowedLocationsOverride<T>>::set(locations);109			Ok(())110		}111	}112113	#[pallet::pallet]114	#[pallet::generate_store(pub(super) trait Store)]115	pub struct Pallet<T>(_);116}117118pub struct WeightToFee<T, B>(PhantomData<(T, B)>);119120impl<T, B> WeightToFeePolynomial for WeightToFee<T, B>121where122	T: Config,123	B: BaseArithmetic + From<u32> + Copy + Unsigned,124{125	type Balance = B;126127	fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {128		smallvec!(WeightToFeeCoefficient {129			coeff_integer: <WeightToFeeCoefficientOverride<T>>::get().into(),130			coeff_frac: Perbill::zero(),131			negative: false,132			degree: 1,133		})134	}135}136137pub struct FeeCalculator<T>(PhantomData<T>);138impl<T: Config> fp_evm::FeeCalculator for FeeCalculator<T> {139	fn min_gas_price() -> (U256, Weight) {140		(141			<MinGasPriceOverride<T>>::get().into(),142			T::DbWeight::get().reads(1),143		)144	}145}