git.delta.rocks / unique-network / refs/commits / b6f730ecff68

1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56#![recursion_limit = "1024"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use std::*;1213pub use serde::{Serialize, Deserialize};1415#[cfg(feature = "runtime-benchmarks")]16mod benchmarking;1718#[cfg(test)]19mod tests;2021pub use frame_support::{22	construct_runtime, decl_module, decl_storage,23	ensure,24	traits::{25		Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,26		Randomness, IsSubType, WithdrawReasons,27	},28	weights::{29		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},30		DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,31		WeightToFeePolynomial, DispatchClass,32	},33	StorageValue,34	transactional,35};3637// #[cfg(feature = "runtime-benchmarks")]38pub use frame_support::dispatch::DispatchResult;3940use sp_runtime::{41	Perbill,42	traits::{Zero}43};44use sp_std::convert::TryInto;4546use frame_system::{self as system};4748/// The balance type of this module.49pub type BalanceOf<T> =50	<<T as Config>::Currency as Currency<<T as frame_system::Config>::AccountId>>::Balance;5152pub const YEAR: u32 = 5_259_600;53pub const TOTAL_YEARS_UNTIL_FLAT: u32 = 9;54pub const START_INFLATION_PERCENT: u32 = 10;55pub const END_INFLATION_PERCENT: u32 = 4;5657pub trait Config: system::Config {58	type Currency: Currency<Self::AccountId>;59	type TreasuryAccountId: Get<Self::AccountId>;60	type InflationBlockInterval: Get<Self::BlockNumber>;61}6263decl_storage! {64	trait Store for Module<T: Config> as Inflation {65		/// starting year total issuance66		pub StartingYearTotalIssuance get(fn starting_year_total_issuance): BalanceOf<T>;6768		/// Current block inflation69		pub BlockInflation get(fn block_inflation): BalanceOf<T>;70	}71}7273decl_module! {74	pub struct Module<T: Config> for enum Call 75	where 76		origin: T::Origin,77	{78		const InflationBlockInterval: T::BlockNumber = T::InflationBlockInterval::get();7980		fn on_initialize(now: T::BlockNumber) -> Weight 81		{82			let mut consumed_weight = 0;83			let mut add_weight = |reads, writes, weight| {84				consumed_weight += T::DbWeight::get().reads_writes(reads, writes);85				consumed_weight += weight;86			};8788			let block_interval: u32 = T::InflationBlockInterval::get().try_into().unwrap_or(0);8990			// Recalculate inflation on the first block of the year (or if it is not initialized yet)91			if (now % T::BlockNumber::from(YEAR)).is_zero() || <BlockInflation<T>>::get().is_zero() {92				let current_year: u32 = (now / T::BlockNumber::from(YEAR)).try_into().unwrap_or(0);9394				let one_percent = Perbill::from_percent(1);9596				if current_year <= TOTAL_YEARS_UNTIL_FLAT {97					let amount: BalanceOf<T> = Perbill::from_rational_approximation(98						block_interval * (START_INFLATION_PERCENT * TOTAL_YEARS_UNTIL_FLAT - current_year * (START_INFLATION_PERCENT - END_INFLATION_PERCENT)), 99						YEAR * TOTAL_YEARS_UNTIL_FLAT100					) * ( one_percent * T::Currency::total_issuance() );101					<BlockInflation<T>>::put(amount);102				}103				else {104					let amount: BalanceOf<T> = Perbill::from_rational_approximation(105						block_interval * END_INFLATION_PERCENT, 106						YEAR107					) * (one_percent * T::Currency::total_issuance());108					<BlockInflation<T>>::put(amount);109				}110				<StartingYearTotalIssuance<T>>::set(T::Currency::total_issuance());111112				// First time deposit113				T::Currency::deposit_creating(&T::TreasuryAccountId::get(), <BlockInflation<T>>::get());114115				add_weight(7, 6, 28_300_000);116			}117118			// Apply inflation every InflationBlockInterval blocks and in the 1st block to initialize Treasury account119			else if (now % T::BlockNumber::from(block_interval)).is_zero() {120				T::Currency::deposit_into_existing(&T::TreasuryAccountId::get(), <BlockInflation<T>>::get()).ok();121122				add_weight(3, 2, 12_900_000);123			}124125			consumed_weight126		}127128	}129}