`8de2dcb509ae`

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pallets/configuration/src/lib.rs8.9 KiBsource history
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 parity_scale_codec::{Decode, Encode, MaxEncodedLen};27use scale_info::TypeInfo;28use sp_arithmetic::{29	per_things::{Perbill, PerThing},30	traits::{BaseArithmetic, Unsigned},31};32use smallvec::smallvec;3334pub use pallet::*;35use sp_core::U256;3637#[pallet]38mod pallet {39	use super::*;40	use frame_support::{41		traits::{Get, ReservableCurrency, Currency},42		pallet_prelude::{StorageValue, ValueQuery, DispatchResult, IsType, OptionQuery},43		BoundedVec, log,44	};45	use frame_system::{pallet_prelude::OriginFor, ensure_root, Config as SystemConfig};46	use xcm::v1::MultiLocation;4748	pub type BalanceOf<T> =49		<<T as Config>::Currency as Currency<<T as SystemConfig>::AccountId>>::Balance;5051	#[pallet::config]52	pub trait Config: frame_system::Config {53		/// Overarching event type.54		type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;5556		/// The currency mechanism.57		type Currency: ReservableCurrency<Self::AccountId>;5859		#[pallet::constant]60		type DefaultWeightToFeeCoefficient: Get<u64>;61		#[pallet::constant]62		type DefaultMinGasPrice: Get<u64>;6364		#[pallet::constant]65		type MaxXcmAllowedLocations: Get<u32>;66		#[pallet::constant]67		type AppPromotionDailyRate: Get<Perbill>;68		#[pallet::constant]69		type DayRelayBlocks: Get<Self::BlockNumber>;7071		#[pallet::constant]72		type DefaultCollatorSelectionMaxCollators: Get<u32>;73		#[pallet::constant]74		type DefaultCollatorSelectionLicenseBond: Get<BalanceOf<Self>>;75		#[pallet::constant]76		type DefaultCollatorSelectionKickThreshold: Get<Self::BlockNumber>;77	}7879	#[pallet::event]80	#[pallet::generate_deposit(pub(super) fn deposit_event)]81	pub enum Event<T: Config> {82		NewDesiredCollators {83			desired_collators: Option<u32>,84		},85		NewCollatorLicenseBond {86			bond_cost: Option<BalanceOf<T>>,87		},88		NewCollatorKickThreshold {89			length_in_blocks: Option<T::BlockNumber>,90		},91	}9293	#[pallet::error]94	pub enum Error<T> {95		InconsistentConfiguration,96	}9798	#[pallet::storage]99	pub type WeightToFeeCoefficientOverride<T: Config> = StorageValue<100		Value = u64,101		QueryKind = ValueQuery,102		OnEmpty = T::DefaultWeightToFeeCoefficient,103	>;104105	#[pallet::storage]106	pub type MinGasPriceOverride<T: Config> =107		StorageValue<Value = u64, QueryKind = ValueQuery, OnEmpty = T::DefaultMinGasPrice>;108109	#[pallet::storage]110	pub type XcmAllowedLocationsOverride<T: Config> = StorageValue<111		Value = BoundedVec<MultiLocation, T::MaxXcmAllowedLocations>,112		QueryKind = OptionQuery,113	>;114115	#[pallet::storage]116	pub type AppPromomotionConfigurationOverride<T: Config> =117		StorageValue<Value = AppPromotionConfiguration<T::BlockNumber>, QueryKind = ValueQuery>;118119	#[pallet::storage]120	pub type CollatorSelectionDesiredCollatorsOverride<T: Config> = StorageValue<121		Value = u32,122		QueryKind = ValueQuery,123		OnEmpty = T::DefaultCollatorSelectionMaxCollators,124	>;125126	#[pallet::storage]127	pub type CollatorSelectionLicenseBondOverride<T: Config> = StorageValue<128		Value = BalanceOf<T>,129		QueryKind = ValueQuery,130		OnEmpty = T::DefaultCollatorSelectionLicenseBond,131	>;132133	#[pallet::storage]134	pub type CollatorSelectionKickThresholdOverride<T: Config> = StorageValue<135		Value = T::BlockNumber,136		QueryKind = ValueQuery,137		OnEmpty = T::DefaultCollatorSelectionKickThreshold,138	>;139140	#[pallet::call]141	impl<T: Config> Pallet<T> {142		#[pallet::call_index(0)]143		#[pallet::weight(T::DbWeight::get().writes(1))]144		pub fn set_weight_to_fee_coefficient_override(145			origin: OriginFor<T>,146			coeff: Option<u64>,147		) -> DispatchResult {148			ensure_root(origin)?;149			if let Some(coeff) = coeff {150				<WeightToFeeCoefficientOverride<T>>::set(coeff);151			} else {152				<WeightToFeeCoefficientOverride<T>>::kill();153			}154			Ok(())155		}156157		#[pallet::call_index(1)]158		#[pallet::weight(T::DbWeight::get().writes(1))]159		pub fn set_min_gas_price_override(160			origin: OriginFor<T>,161			coeff: Option<u64>,162		) -> DispatchResult {163			ensure_root(origin)?;164			if let Some(coeff) = coeff {165				<MinGasPriceOverride<T>>::set(coeff);166			} else {167				<MinGasPriceOverride<T>>::kill();168			}169			Ok(())170		}171172		#[pallet::call_index(2)]173		#[pallet::weight(T::DbWeight::get().writes(1))]174		pub fn set_xcm_allowed_locations(175			origin: OriginFor<T>,176			locations: Option<BoundedVec<MultiLocation, T::MaxXcmAllowedLocations>>,177		) -> DispatchResult {178			ensure_root(origin)?;179			<XcmAllowedLocationsOverride<T>>::set(locations);180			Ok(())181		}182183		#[pallet::call_index(3)]184		#[pallet::weight(T::DbWeight::get().writes(1))]185		pub fn set_app_promotion_configuration_override(186			origin: OriginFor<T>,187			mut configuration: AppPromotionConfiguration<T::BlockNumber>,188		) -> DispatchResult {189			ensure_root(origin)?;190			if configuration.interval_income.is_some() {191				return Err(<Error<T>>::InconsistentConfiguration.into());192			}193194			configuration.interval_income = configuration.recalculation_interval.map(|b| {195				Perbill::from_rational(b, T::DayRelayBlocks::get())196					* T::AppPromotionDailyRate::get()197			});198199			<AppPromomotionConfigurationOverride<T>>::set(configuration);200201			Ok(())202		}203204		#[pallet::weight(T::DbWeight::get().writes(1))]205		pub fn set_collator_selection_desired_collators(206			origin: OriginFor<T>,207			max: Option<u32>,208		) -> DispatchResult {209			ensure_root(origin)?;210			if let Some(max) = max {211				// we trust origin calls, this is just a for more accurate benchmarking212				if max > T::DefaultCollatorSelectionMaxCollators::get() {213					log::warn!("max > T::DefaultCollatorSelectionMaxCollators; you might need to run benchmarks again");214				}215				<CollatorSelectionDesiredCollatorsOverride<T>>::set(max);216			} else {217				<CollatorSelectionDesiredCollatorsOverride<T>>::kill();218			}219			Self::deposit_event(Event::NewDesiredCollators { desired_collators: max });220			Ok(())221		}222223		#[pallet::weight(T::DbWeight::get().writes(1))]224		pub fn set_collator_selection_license_bond(225			origin: OriginFor<T>,226			amount: Option<BalanceOf<T>>,227		) -> DispatchResult {228			ensure_root(origin)?;229			if let Some(amount) = amount {230				<CollatorSelectionLicenseBondOverride<T>>::set(amount);231			} else {232				<CollatorSelectionLicenseBondOverride<T>>::kill();233			}234			Self::deposit_event(Event::NewCollatorLicenseBond { bond_cost: amount });235			Ok(())236		}237238		#[pallet::weight(T::DbWeight::get().writes(1))]239		pub fn set_collator_selection_kick_threshold(240			origin: OriginFor<T>,241			threshold: Option<T::BlockNumber>,242		) -> DispatchResult {243			ensure_root(origin)?;244			if let Some(threshold) = threshold {245				<CollatorSelectionKickThresholdOverride<T>>::set(threshold);246			} else {247				<CollatorSelectionKickThresholdOverride<T>>::kill();248			}249			Self::deposit_event(Event::NewCollatorKickThreshold { length_in_blocks: threshold });250			Ok(())251		}252	}253254	#[pallet::pallet]255	#[pallet::generate_store(pub(super) trait Store)]256	pub struct Pallet<T>(_);257}258259pub struct WeightToFee<T, B>(PhantomData<(T, B)>);260261impl<T, B> WeightToFeePolynomial for WeightToFee<T, B>262where263	T: Config,264	B: BaseArithmetic + From<u32> + From<u64> + Copy + Unsigned,265{266	type Balance = B;267268	fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {269		smallvec!(WeightToFeeCoefficient {270			coeff_integer: (<WeightToFeeCoefficientOverride<T>>::get() / Perbill::ACCURACY as u64)271				.into(),272			coeff_frac: Perbill::from_parts(273				(<WeightToFeeCoefficientOverride<T>>::get() % Perbill::ACCURACY as u64) as u32274			),275			negative: false,276			degree: 1,277		})278	}279}280281pub struct FeeCalculator<T>(PhantomData<T>);282impl<T: Config> fp_evm::FeeCalculator for FeeCalculator<T> {283	fn min_gas_price() -> (U256, Weight) {284		(285			<MinGasPriceOverride<T>>::get().into(),286			T::DbWeight::get().reads(1),287		)288	}289}290291#[derive(Encode, Decode, Clone, Debug, Default, TypeInfo, MaxEncodedLen, PartialEq, PartialOrd)]292pub struct AppPromotionConfiguration<BlockNumber> {293	/// In relay blocks.294	pub recalculation_interval: Option<BlockNumber>,295	/// In parachain blocks.296	pub pending_interval: Option<BlockNumber>,297	/// Value for `RecalculationInterval` based on 0.05% per 24h.298	pub interval_income: Option<Perbill>,299	/// Maximum allowable number of stakers calculated per call of the `app-promotion::PayoutStakers` extrinsic.300	pub max_stakers_per_calculation: Option<u8>,301}