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