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Doordashcon
2d9123d456
* added Polkadot constants * remove hardcoded constants * cargo +nightly fmt * add const existential deposit * update * cargo +nightly fmt * not pulling * readd constants.rs modules * update * Cargo.lock * update * add balance constants * Update polkadot-parachains/statemine/src/constants.rs Co-authored-by: Alexander Popiak <alexander.popiak@gmail.com> * cargo fmt Co-authored-by: Alexander Popiak <alexander.popiak@gmail.com>
74 lines
2.7 KiB
Rust
74 lines
2.7 KiB
Rust
// Copyright (C) 2021 Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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pub mod currency {
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use node_primitives::Balance;
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use westend_runtime_constants as constants;
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/// The existential deposit. Set to 1/10 of its parent Relay Chain.
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pub const EXISTENTIAL_DEPOSIT: Balance = constants::currency::EXISTENTIAL_DEPOSIT / 10;
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pub const UNITS: Balance = constants::currency::UNITS;
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pub const CENTS: Balance = constants::currency::CENTS;
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pub const MILLICENTS: Balance = constants::currency::MILLICENTS;
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pub const GRAND: Balance = constants::currency::GRAND;
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pub const fn deposit(items: u32, bytes: u32) -> Balance {
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// 1/10 of Westend testnet
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constants::currency::deposit(items, bytes) / 10
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}
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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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constants::ExtrinsicBaseWeight, WeightToFeeCoefficient, WeightToFeeCoefficients,
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WeightToFeePolynomial,
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};
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use node_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 and granularity of the
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/// 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. Some examples being:
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/// - Setting it to `0` will essentially disable the weight fee.
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/// - Setting it to `1` will cause the literal `#[weight = x]` values to be charged.
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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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// in Polkadot, extrinsic base weight (smallest non-zero weight) is mapped to 1/10 CENT:
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// in Statemint, we map to 1/10 of that, or 1/100 CENT
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let p = super::currency::CENTS;
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let q = 100 * Balance::from(ExtrinsicBaseWeight::get());
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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::from_rational(p % q, q),
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coeff_integer: p / q,
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}]
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}
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}
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}
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