116 lines
3.6 KiB
Rust
116 lines
3.6 KiB
Rust
#![cfg_attr(not(feature = "std"), no_std)]
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pub mod weights;
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pub use self::currency::CSPR;
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/// Monetary constants.
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pub mod currency {
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use primitives::Balance;
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/// Constant values used within runtime.
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pub const FTSO: Balance = 1_000_000_000; // 10^9
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pub const STNK: Balance = 1_000 * FTSO; // 10^12
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pub const STRH: Balance = 1_000 * STNK; // 10^15
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pub const CSPR: Balance = 1_000 * STRH; // 10^18
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/// The existential deposit.
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pub const EXISTENTIAL_DEPOSIT: Balance = 500 * STNK;
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pub const fn deposit(items: u32, bytes: u32) -> Balance {
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(items as Balance) * 2 * STRH + (bytes as Balance) * 200 * STNK
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}
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}
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/// Time and blocks.
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pub mod time {
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use primitives::{BlockNumber, Moment};
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use runtime_common::prod_or_fast;
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pub const MILLISECS_PER_BLOCK: Moment = 12_000;
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pub const SLOT_DURATION: Moment = MILLISECS_PER_BLOCK;
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pub const EPOCH_DURATION_IN_SLOTS: BlockNumber = prod_or_fast!(4 * HOURS, 1 * MINUTES);
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// These time units are defined in number of blocks.
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pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
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pub const HOURS: BlockNumber = MINUTES * 60;
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pub const DAYS: BlockNumber = HOURS * 24;
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pub const WEEKS: BlockNumber = DAYS * 7;
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// 1 in 4 blocks (on average, not counting collisions) woll be primary babe
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// blocks.The choice of is done on accordance to the slot duration and expected
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// target block time, for safely resisting network delays of maximum two
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// seconds.
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pub const PRIMARY_PROBABILITY: (u64, u64) = (1, 4);
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}
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/// Fee-related.
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pub mod fee {
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use frame_support::weights::{
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WeightToFeeCoefficient, WeightToFeeCoefficients, WeightToFeePolynomial,
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};
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use primitives::Balance;
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use smallvec::smallvec;
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pub use sp_runtime::Perbill;
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/// The block saturation level. Fees will be updates based on this value.
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pub const TARGET_BLOCK_FULLNESS: Perbill = Perbill::from_percent(25);
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/// Handles converting a weight scalar to a fee value, based on the scale
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/// and granularity of the node's balance type.
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///
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/// This should typically create a mapping between the following ranges:
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/// - [0, `MAXIMUM_BLOCK_WEIGHT`]
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/// - [Balance::min, Balance::max]
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///
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/// Yet, it can be used for any other sort of change to weight-fee.
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pub struct WeightToFee;
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impl WeightToFeePolynomial for WeightToFee {
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type Balance = Balance;
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fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {
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let fee_per_nanosecond: Balance = (424 * super::currency::FTSO) / 1_200_000;
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smallvec![WeightToFeeCoefficient {
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degree: 1,
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negative: false,
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coeff_frac: Perbill::zero(),
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coeff_integer: fee_per_nanosecond,
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}]
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::{
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currency::{CSPR, STNK},
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fee::WeightToFee,
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};
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use crate::weights::ExtrinsicBaseWeight;
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use frame_support::weights::WeightToFee as WeightToFeeT;
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use runtime_common::MAXIMUM_BLOCK_WEIGHT;
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#[test]
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fn full_block_fee_is_correct() {
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let full_block = WeightToFee::weight_to_fee(&MAXIMUM_BLOCK_WEIGHT);
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let lower_bound = 1 * CSPR;
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let upper_bound = 2 * CSPR;
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assert!(full_block >= lower_bound);
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assert!(full_block <= upper_bound);
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}
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#[test]
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fn extrinsic_base_fee_is_correct() {
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let ext_weight = WeightToFee::weight_to_fee(&ExtrinsicBaseWeight::get());
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let lower_bound = 100 * STNK;
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let upper_bound = 300 * STNK;
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assert!(ext_weight >= lower_bound);
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assert!(ext_weight <= upper_bound);
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}
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}
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