git.delta.rocks / unique-network / refs/commits / dfe7fa59b9da

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::*;1213#[cfg(feature = "std")]14pub use serde::*;1516#[cfg(feature = "runtime-benchmarks")]17mod benchmarking;1819#[cfg(test)]20mod tests;2122pub use frame_support::{23	construct_runtime, decl_module, decl_storage,24	ensure,25	traits::{26		Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,27		Randomness, IsSubType, WithdrawReasons,28	},29	weights::{30		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},31		DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,32		WeightToFeePolynomial, DispatchClass,33	},34	StorageValue,35	transactional,36};3738// #[cfg(feature = "runtime-benchmarks")]39pub use frame_support::dispatch::DispatchResult;4041use sp_runtime::{42	Perbill,43	traits::{Zero}44};45use sp_std::convert::TryInto;4647use frame_system::{self as system};4849/// The balance type of this module.50pub type BalanceOf<T> =51	<<T as Config>::Currency as Currency<<T as frame_system::Config>::AccountId>>::Balance;5253pub const YEAR: u32 = 5_259_600;54pub const TOTAL_YEARS_UNTIL_FLAT: u32 = 9;55pub const START_INFLATION_PERCENT: u32 = 10;56pub const END_INFLATION_PERCENT: u32 = 4;5758pub trait Config: system::Config {59	type Currency: Currency<Self::AccountId>;60	type TreasuryAccountId: Get<Self::AccountId>;61	type InflationBlockInterval: Get<Self::BlockNumber>;62}6364decl_storage! {65	trait Store for Module<T: Config> as Inflation {66		/// starting year total issuance67		pub StartingYearTotalIssuance get(fn starting_year_total_issuance): BalanceOf<T>;6869		/// Current block inflation70		pub BlockInflation get(fn block_inflation): BalanceOf<T>;71	}72}7374decl_module! {75	pub struct Module<T: Config> for enum Call 76	where 77		origin: T::Origin,78	{79		const InflationBlockInterval: T::BlockNumber = T::InflationBlockInterval::get();8081		fn on_initialize(now: T::BlockNumber) -> Weight 82		{83			let mut consumed_weight = 0;84			let mut add_weight = |reads, writes, weight| {85				consumed_weight += T::DbWeight::get().reads_writes(reads, writes);86				consumed_weight += weight;87			};8889			let block_interval: u32 = T::InflationBlockInterval::get().try_into().unwrap_or(0);9091			// Recalculate inflation on the first block of the year (or if it is not initialized yet)92			if (now % T::BlockNumber::from(YEAR)).is_zero() || <BlockInflation<T>>::get().is_zero() {93				let current_year: u32 = (now / T::BlockNumber::from(YEAR)).try_into().unwrap_or(0);9495				let one_percent = Perbill::from_percent(1);9697				if current_year <= TOTAL_YEARS_UNTIL_FLAT {98					let amount: BalanceOf<T> = Perbill::from_rational_approximation(99						block_interval * (START_INFLATION_PERCENT * TOTAL_YEARS_UNTIL_FLAT - current_year * (START_INFLATION_PERCENT - END_INFLATION_PERCENT)), 100						YEAR * TOTAL_YEARS_UNTIL_FLAT101					) * ( one_percent * T::Currency::total_issuance() );102					<BlockInflation<T>>::put(amount);103				}104				else {105					let amount: BalanceOf<T> = Perbill::from_rational_approximation(106						block_interval * END_INFLATION_PERCENT, 107						YEAR108					) * (one_percent * T::Currency::total_issuance());109					<BlockInflation<T>>::put(amount);110				}111				<StartingYearTotalIssuance<T>>::set(T::Currency::total_issuance());112113				// First time deposit114				T::Currency::deposit_creating(&T::TreasuryAccountId::get(), <BlockInflation<T>>::get());115116				add_weight(7, 6, 28_300_000);117			}118119			// Apply inflation every InflationBlockInterval blocks and in the 1st block to initialize Treasury account120			else if (now % T::BlockNumber::from(block_interval)).is_zero() {121				T::Currency::deposit_into_existing(&T::TreasuryAccountId::get(), <BlockInflation<T>>::get()).ok();122123				add_weight(3, 2, 12_900_000);124			}125126			consumed_weight127		}128129	}130}