109 lines
2.8 KiB
Rust
109 lines
2.8 KiB
Rust
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// 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::sync::Mutex;
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use std::collections::HashMap;
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use v1::types::{TransactionRequest, TransactionConfirmation};
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use util::U256;
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/// A queue of transactions awaiting to be confirmed and signed.
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pub trait SigningQueue: Send + Sync {
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/// Add new request to the queue.
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fn add_request(&self, transaction: TransactionRequest) -> U256;
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/// Remove request from the queue.
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fn remove_request(&self, id: U256) -> Option<TransactionConfirmation>;
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/// Return copy of all the requests in the queue.
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fn requests(&self) -> Vec<TransactionConfirmation>;
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}
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/// Queue for all unconfirmed transactions.
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pub struct ConfirmationsQueue {
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id: Mutex<U256>,
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queue: Mutex<HashMap<U256, TransactionConfirmation>>,
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}
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impl Default for ConfirmationsQueue {
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fn default() -> Self {
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ConfirmationsQueue {
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id: Mutex::new(U256::from(0)),
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queue: Mutex::new(HashMap::new()),
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}
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}
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}
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impl SigningQueue for ConfirmationsQueue {
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fn add_request(&self, transaction: TransactionRequest) -> U256 {
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// Increment id
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let id = {
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let mut last_id = self.id.lock().unwrap();
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*last_id = *last_id + U256::from(1);
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*last_id
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};
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let mut queue = self.queue.lock().unwrap();
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queue.insert(id, TransactionConfirmation {
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id: id,
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transaction: transaction,
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});
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id
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}
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fn remove_request(&self, id: U256) -> Option<TransactionConfirmation> {
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self.queue.lock().unwrap().remove(&id)
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}
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fn requests(&self) -> Vec<TransactionConfirmation> {
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let queue = self.queue.lock().unwrap();
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queue.values().cloned().collect()
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}
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}
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#[cfg(test)]
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mod test {
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use util::hash::Address;
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use util::numbers::U256;
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use v1::types::TransactionRequest;
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use super::*;
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#[test]
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fn should_work_for_hashset() {
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// given
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let queue = ConfirmationsQueue::default();
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let request = TransactionRequest {
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from: Address::from(1),
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to: Some(Address::from(2)),
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gas_price: None,
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gas: None,
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value: Some(U256::from(10_000_000)),
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data: None,
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nonce: None,
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};
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// when
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queue.add_request(request.clone());
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let all = queue.requests();
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// then
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assert_eq!(all.len(), 1);
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let el = all.get(0).unwrap();
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assert_eq!(el.id, U256::from(1));
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assert_eq!(el.transaction, request);
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}
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}
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