71bbcd54ff
* Make work-notify an optional feature * More optional ethcore features: price-info, stratum * Make ethcore features part of dependency instead of local features * Put cfg gate in right location * Feature gate register function on work-notify
74 lines
2.7 KiB
Rust
74 lines
2.7 KiB
Rust
// Copyright 2015-2018 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// Parity is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Auto-updates minimal gas price requirement from a price-info source.
|
|
|
|
use std::time::{Instant, Duration};
|
|
|
|
use ansi_term::Colour;
|
|
use ethereum_types::U256;
|
|
use futures_cpupool::CpuPool;
|
|
use price_info::{Client as PriceInfoClient, PriceInfo};
|
|
use price_info::fetch::Client as FetchClient;
|
|
|
|
/// Options for the dynamic gas price recalibrator.
|
|
#[derive(Debug, PartialEq)]
|
|
pub struct GasPriceCalibratorOptions {
|
|
/// Base transaction price to match against.
|
|
pub usd_per_tx: f32,
|
|
/// How frequently we should recalibrate.
|
|
pub recalibration_period: Duration,
|
|
}
|
|
|
|
/// The gas price validator variant for a `GasPricer`.
|
|
#[derive(Debug, PartialEq)]
|
|
pub struct GasPriceCalibrator {
|
|
options: GasPriceCalibratorOptions,
|
|
next_calibration: Instant,
|
|
price_info: PriceInfoClient,
|
|
}
|
|
|
|
impl GasPriceCalibrator {
|
|
/// Create a new gas price calibrator.
|
|
pub fn new(options: GasPriceCalibratorOptions, fetch: FetchClient, p: CpuPool) -> GasPriceCalibrator {
|
|
GasPriceCalibrator {
|
|
options: options,
|
|
next_calibration: Instant::now(),
|
|
price_info: PriceInfoClient::new(fetch, p),
|
|
}
|
|
}
|
|
|
|
pub(crate) fn recalibrate<F: FnOnce(U256) + Sync + Send + 'static>(&mut self, set_price: F) {
|
|
trace!(target: "miner", "Recalibrating {:?} versus {:?}", Instant::now(), self.next_calibration);
|
|
if Instant::now() >= self.next_calibration {
|
|
let usd_per_tx = self.options.usd_per_tx;
|
|
trace!(target: "miner", "Getting price info");
|
|
|
|
self.price_info.get(move |price: PriceInfo| {
|
|
trace!(target: "miner", "Price info arrived: {:?}", price);
|
|
let usd_per_eth = price.ethusd;
|
|
let wei_per_usd: f32 = 1.0e18 / usd_per_eth;
|
|
let gas_per_tx: f32 = 21000.0;
|
|
let wei_per_gas: f32 = wei_per_usd * usd_per_tx / gas_per_tx;
|
|
info!(target: "miner", "Updated conversion rate to Ξ1 = {} ({} wei/gas)", Colour::White.bold().paint(format!("US${:.2}", usd_per_eth)), Colour::Yellow.bold().paint(format!("{}", wei_per_gas)));
|
|
set_price(U256::from(wei_per_gas as u64));
|
|
});
|
|
|
|
self.next_calibration = Instant::now() + self.options.recalibration_period;
|
|
}
|
|
}
|
|
}
|