mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-27 02:17:58 +00:00
Bastian Köcher
95 lines
2.9 KiB
Rust
95 lines
2.9 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2020-2022 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, fmt::Debug};
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use crate::ServicetoWorkerMsg;
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use futures::{
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channel::{mpsc, oneshot},
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SinkExt,
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};
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use sc_network::{Multiaddr, PeerId};
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use sp_authority_discovery::AuthorityId;
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/// Service to interact with the [`crate::Worker`].
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#[derive(Clone)]
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pub struct Service {
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to_worker: mpsc::Sender<ServicetoWorkerMsg>,
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}
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impl Debug for Service {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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f.debug_tuple("AuthorityDiscoveryService").finish()
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}
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}
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/// A [`Service`] allows to interact with a [`crate::Worker`], e.g. by querying the
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/// [`crate::Worker`]'s local address cache for a given [`AuthorityId`].
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impl Service {
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pub(crate) fn new(to_worker: mpsc::Sender<ServicetoWorkerMsg>) -> Self {
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Self { to_worker }
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}
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/// Get the addresses for the given [`AuthorityId`] from the local address
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/// cache.
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///
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/// Returns `None` if no entry was present or connection to the
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/// [`crate::Worker`] failed.
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///
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/// Note: [`Multiaddr`]s returned always include a [`PeerId`] via a
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/// [`libp2p::core::multiaddr::Protocol::P2p`] component. Equality of
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/// [`PeerId`]s across [`Multiaddr`]s returned by a single call is not
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/// enforced today, given that there are still authorities out there
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/// publishing the addresses of their sentry nodes on the DHT. In the future
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/// this guarantee can be provided.
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pub async fn get_addresses_by_authority_id(
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&mut self,
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authority: AuthorityId,
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) -> Option<HashSet<Multiaddr>> {
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let (tx, rx) = oneshot::channel();
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self.to_worker
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.send(ServicetoWorkerMsg::GetAddressesByAuthorityId(authority, tx))
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.await
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.ok()?;
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rx.await.ok().flatten()
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}
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/// Get the [`AuthorityId`] for the given [`PeerId`] from the local address
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/// cache.
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///
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/// Returns `None` if no entry was present or connection to the
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/// [`crate::Worker`] failed.
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pub async fn get_authority_ids_by_peer_id(
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&mut self,
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peer_id: PeerId,
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) -> Option<HashSet<AuthorityId>> {
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let (tx, rx) = oneshot::channel();
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self.to_worker
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.send(ServicetoWorkerMsg::GetAuthorityIdsByPeerId(peer_id, tx))
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.await
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.ok()?;
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rx.await.ok().flatten()
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}
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}
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