113 lines
2.9 KiB
Rust
113 lines
2.9 KiB
Rust
// Copyright 2015-2018 Parity Technologies (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::cmp;
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use std::collections::HashMap;
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use ethereum_types::{H160 as Sender, U256};
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use {pool, scoring, Scoring, ShouldReplace, ReplaceTransaction, Ready, Readiness};
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use super::Transaction;
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#[derive(Debug, Default)]
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pub struct DummyScoring {
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always_insert: bool,
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}
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impl DummyScoring {
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pub fn always_insert() -> Self {
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DummyScoring {
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always_insert: true,
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}
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}
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}
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impl Scoring<Transaction> for DummyScoring {
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type Score = U256;
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type Event = ();
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fn compare(&self, old: &Transaction, new: &Transaction) -> cmp::Ordering {
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old.nonce.cmp(&new.nonce)
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}
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fn choose(&self, old: &Transaction, new: &Transaction) -> scoring::Choice {
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if old.nonce == new.nonce {
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if new.gas_price > old.gas_price {
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scoring::Choice::ReplaceOld
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} else {
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scoring::Choice::RejectNew
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}
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} else {
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scoring::Choice::InsertNew
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}
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}
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fn update_scores(&self, txs: &[pool::Transaction<Transaction>], scores: &mut [Self::Score], change: scoring::Change) {
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if let scoring::Change::Event(_) = change {
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// In case of event reset all scores to 0
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for i in 0..txs.len() {
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scores[i] = 0.into();
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}
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} else {
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// Set to a gas price otherwise
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for i in 0..txs.len() {
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scores[i] = txs[i].gas_price;
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}
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}
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}
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fn should_ignore_sender_limit(&self, _new: &Transaction) -> bool {
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self.always_insert
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}
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}
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impl ShouldReplace<Transaction> for DummyScoring {
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fn should_replace(&self, old: &ReplaceTransaction<Transaction>, new: &ReplaceTransaction<Transaction>) -> scoring::Choice {
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if self.always_insert {
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scoring::Choice::InsertNew
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} else if new.gas_price > old.gas_price {
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scoring::Choice::ReplaceOld
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} else {
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scoring::Choice::RejectNew
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}
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}
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}
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#[derive(Default)]
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pub struct NonceReady(HashMap<Sender, U256>, U256);
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impl NonceReady {
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pub fn new<T: Into<U256>>(min: T) -> Self {
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let mut n = NonceReady::default();
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n.1 = min.into();
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n
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}
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}
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impl Ready<Transaction> for NonceReady {
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fn is_ready(&mut self, tx: &Transaction) -> Readiness {
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let min = self.1;
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let nonce = self.0.entry(tx.sender).or_insert_with(|| min);
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match tx.nonce.cmp(nonce) {
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cmp::Ordering::Greater => Readiness::Future,
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cmp::Ordering::Equal => {
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*nonce += 1.into();
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Readiness::Ready
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},
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cmp::Ordering::Less => Readiness::Stale,
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}
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}
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}
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