54 lines
1.8 KiB
Rust
54 lines
1.8 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
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//! Auto-updates minimal gas price requirement.
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use ethereum_types::U256;
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#[cfg(feature = "price-info")]
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use gas_price_calibrator::GasPriceCalibrator;
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/// Struct to look after updating the acceptable gas price of a miner.
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#[derive(Debug, PartialEq)]
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pub enum GasPricer {
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/// A fixed gas price in terms of Wei - always the argument given.
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Fixed(U256),
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/// Gas price is calibrated according to a fixed amount of USD.
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#[cfg(feature = "price-info")]
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Calibrated(GasPriceCalibrator),
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}
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impl GasPricer {
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/// Create a new Calibrated `GasPricer`.
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#[cfg(feature = "price-info")]
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pub fn new_calibrated(calibrator: GasPriceCalibrator) -> GasPricer {
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GasPricer::Calibrated(calibrator)
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}
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/// Create a new Fixed `GasPricer`.
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pub fn new_fixed(gas_price: U256) -> GasPricer {
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GasPricer::Fixed(gas_price)
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}
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/// Recalibrate current gas price.
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pub fn recalibrate<F: FnOnce(U256) + Sync + Send + 'static>(&mut self, set_price: F) {
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match *self {
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GasPricer::Fixed(ref curr) => set_price(curr.clone()),
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#[cfg(feature = "price-info")]
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GasPricer::Calibrated(ref mut cal) => cal.recalibrate(set_price),
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}
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}
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}
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