108 lines
2.6 KiB
Rust
108 lines
2.6 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
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use std::collections::HashMap;
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use std::sync::Arc;
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use util::{RwLock, U256, H256};
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/// External miner interface.
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pub trait ExternalMinerService: Send + Sync {
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/// Submit hashrate for given miner.
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fn submit_hashrate(&self, hashrate: U256, id: H256);
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/// Total hashrate.
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fn hashrate(&self) -> U256;
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/// Returns true if external miner is mining.
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fn is_mining(&self) -> bool;
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}
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/// External Miner.
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pub struct ExternalMiner {
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hashrates: Arc<RwLock<HashMap<H256, U256>>>,
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}
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impl Default for ExternalMiner {
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fn default() -> Self {
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ExternalMiner {
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hashrates: Arc::new(RwLock::new(HashMap::new())),
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}
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}
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}
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impl ExternalMiner {
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/// Creates new external miner with prefilled hashrates.
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pub fn new(hashrates: Arc<RwLock<HashMap<H256, U256>>>) -> Self {
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ExternalMiner {
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hashrates: hashrates
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}
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}
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}
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impl ExternalMinerService for ExternalMiner {
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fn submit_hashrate(&self, hashrate: U256, id: H256) {
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self.hashrates.write().insert(id, hashrate);
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}
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fn hashrate(&self) -> U256 {
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self.hashrates.read().iter().fold(U256::from(0), |sum, (_, v)| sum + *v)
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}
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fn is_mining(&self) -> bool {
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!self.hashrates.read().is_empty()
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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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use util::{H256, U256};
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fn miner() -> ExternalMiner {
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ExternalMiner::default()
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}
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#[test]
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fn should_return_that_is_mining_if_there_is_at_least_one_entry() {
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// given
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let m = miner();
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assert_eq!(m.is_mining(), false);
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// when
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m.submit_hashrate(U256::from(10), H256::from(1));
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// then
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assert_eq!(m.is_mining(), true);
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}
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#[test]
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fn should_sum_up_hashrate() {
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// given
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let m = miner();
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assert_eq!(m.hashrate(), U256::from(0));
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m.submit_hashrate(U256::from(10), H256::from(1));
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assert_eq!(m.hashrate(), U256::from(10));
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// when
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m.submit_hashrate(U256::from(15), H256::from(1));
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m.submit_hashrate(U256::from(20), H256::from(2));
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// then
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assert_eq!(m.hashrate(), U256::from(35));
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}
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}
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