49 lines
1.8 KiB
Rust
49 lines
1.8 KiB
Rust
// Copyright 2015-2017 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/>.
|
|
|
|
use std::sync::Arc;
|
|
|
|
/// Transaction pool listener.
|
|
///
|
|
/// Listener is being notified about status of every transaction in the pool.
|
|
pub trait Listener<T> {
|
|
/// The transaction has been successfuly added to the pool.
|
|
/// If second argument is `Some` the transaction has took place of some other transaction
|
|
/// which was already in pool.
|
|
/// NOTE: You won't be notified about drop of `old` transaction separately.
|
|
fn added(&mut self, _tx: &Arc<T>, _old: Option<&Arc<T>>) {}
|
|
|
|
/// The transaction was rejected from the pool.
|
|
/// It means that it was too cheap to replace any transaction already in the pool.
|
|
fn rejected(&mut self, _tx: T) {}
|
|
|
|
/// The transaction was dropped from the pool because of a limit.
|
|
fn dropped(&mut self, _tx: &Arc<T>) {}
|
|
|
|
/// The transaction was marked as invalid by executor.
|
|
fn invalid(&mut self, _tx: &Arc<T>) {}
|
|
|
|
/// The transaction has been cancelled.
|
|
fn cancelled(&mut self, _tx: &Arc<T>) {}
|
|
|
|
/// The transaction has been mined.
|
|
fn mined(&mut self, _tx: &Arc<T>) {}
|
|
}
|
|
|
|
/// A no-op implementation of `Listener`.
|
|
pub struct NoopListener;
|
|
impl<T> Listener<T> for NoopListener {}
|