openethereum/crates/concensus/miner/src/external.rs
rakita a0f406e26b
Ethereum-types and various libs upgrade (#315)
* Upgrade Eth types

ethereum-types -> 0.9.2
rlp -> 0.4.6
keccak-hash -> 0.5.0
parity-crypto -> 0.6.2
ethabi -> 0.12.0
ethabi-derive -> 0.12.0
ethabi-contract -> 0.11.0
ethbloom -> 0.9.1
rand -> 0.7.3
trie-standardmap -> 0.15.2
triehash -> 0.5.0

* backport #10714. Small changes, merge fixes

Co-authored-by: mdben1247 <mdben1247@users.noreply.github.com>
2021-03-12 10:12:42 +01:00

121 lines
3.3 KiB
Rust

// Copyright 2015-2020 Parity Technologies (UK) Ltd.
// This file is part of OpenEthereum.
// OpenEthereum 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.
// OpenEthereum 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 OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
//! External Miner hashrate tracker.
use ethereum_types::{H256, U256};
use parking_lot::Mutex;
use std::{
collections::HashMap,
sync::Arc,
time::{Duration, Instant},
};
/// External miner interface.
pub trait ExternalMinerService: Send + Sync {
/// Submit hashrate for given miner.
fn submit_hashrate(&self, hashrate: U256, id: H256);
/// Total hashrate.
fn hashrate(&self) -> U256;
}
/// External Miner.
pub struct ExternalMiner {
hashrates: Arc<Mutex<HashMap<H256, (Instant, U256)>>>,
}
impl Default for ExternalMiner {
fn default() -> Self {
ExternalMiner {
hashrates: Arc::new(Mutex::new(HashMap::new())),
}
}
}
impl ExternalMiner {
/// Creates new external miner with prefilled hashrates.
pub fn new(hashrates: Arc<Mutex<HashMap<H256, (Instant, U256)>>>) -> Self {
ExternalMiner {
hashrates: hashrates,
}
}
}
const ENTRY_TIMEOUT: Duration = Duration::from_secs(2);
impl ExternalMinerService for ExternalMiner {
fn submit_hashrate(&self, hashrate: U256, id: H256) {
self.hashrates
.lock()
.insert(id, (Instant::now() + ENTRY_TIMEOUT, hashrate));
}
fn hashrate(&self) -> U256 {
let mut hashrates = self.hashrates.lock();
let h = hashrates
.drain()
.filter(|&(_, (t, _))| t > Instant::now())
.collect();
*hashrates = h;
hashrates
.iter()
.fold(U256::from(0), |sum, (_, &(_, v))| sum + v)
}
}
#[cfg(test)]
mod tests {
use super::*;
use ethereum_types::{H256, U256};
use std::{thread::sleep, time::Duration};
fn miner() -> ExternalMiner {
ExternalMiner::default()
}
#[test]
fn it_should_forget_old_hashrates() {
// given
let m = miner();
assert_eq!(m.hashrate(), U256::from(0));
m.submit_hashrate(U256::from(10), H256::from_low_u64_be(1));
assert_eq!(m.hashrate(), U256::from(10));
// when
sleep(Duration::from_secs(3));
// then
assert_eq!(m.hashrate(), U256::from(0));
}
#[test]
fn should_sum_up_hashrate() {
// given
let m = miner();
assert_eq!(m.hashrate(), U256::from(0));
m.submit_hashrate(U256::from(10), H256::from_low_u64_be(1));
assert_eq!(m.hashrate(), U256::from(10));
// when
m.submit_hashrate(U256::from(15), H256::from_low_u64_be(1));
m.submit_hashrate(U256::from(20), H256::from_low_u64_be(2));
// then
assert_eq!(m.hashrate(), U256::from(35));
}
}