mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 21:37:56 +00:00
Vivek Pandya
bc53b9a03a
* Change copyright year to 2023 from 2022 * Fix incorrect update of copyright year * Remove years from copy right header * Fix remaining files * Fix typo in a header and remove update-copyright.sh
64 lines
1.8 KiB
Rust
64 lines
1.8 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
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// This program 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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// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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use std::collections::HashSet;
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use crate::{
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id_sequence::SeqID,
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pubsub::{Dispatch, Subscribe, Unsubscribe},
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};
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/// The shared structure to keep track on subscribers.
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#[derive(Debug, Default)]
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pub(super) struct Registry {
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pub(super) subscribers: HashSet<SeqID>,
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}
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impl Subscribe<()> for Registry {
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fn subscribe(&mut self, _subs_key: (), subs_id: SeqID) {
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self.subscribers.insert(subs_id);
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}
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}
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impl Unsubscribe for Registry {
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fn unsubscribe(&mut self, subs_id: SeqID) {
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self.subscribers.remove(&subs_id);
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}
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}
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impl<MakePayload, Payload, Error> Dispatch<MakePayload> for Registry
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where
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MakePayload: FnOnce() -> Result<Payload, Error>,
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Payload: Clone,
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{
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type Item = Payload;
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type Ret = Result<(), Error>;
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fn dispatch<F>(&mut self, make_payload: MakePayload, mut dispatch: F) -> Self::Ret
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where
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F: FnMut(&SeqID, Self::Item),
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{
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if !self.subscribers.is_empty() {
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let payload = make_payload()?;
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for subs_id in &self.subscribers {
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dispatch(subs_id, payload.clone());
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}
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}
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Ok(())
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}
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}
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