mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 19:17:58 +00:00
David Emett
a808a3a091
See #1345, <https://github.com/paritytech/substrate/pull/14207>. This adds all the necessary mixnet components, and puts them together in the "kitchen-sink" node/runtime. The components added are: - A pallet (`frame/mixnet`). This is responsible for determining the current mixnet session and phase, and the mixnodes to use in each session. It provides a function that validators can call to register a mixnode for the next session. The logic of this pallet is very similar to that of the `im-online` pallet. - A service (`client/mixnet`). This implements the core mixnet logic, building on the `mixnet` crate. The service communicates with other nodes using notifications sent over the "mixnet" protocol. - An RPC interface. This currently only supports sending transactions over the mixnet. --------- Co-authored-by: David Emett <dave@sp4m.net> Co-authored-by: Javier Viola <javier@parity.io>
70 lines
2.4 KiB
Rust
70 lines
2.4 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 super::{config::Config, error::Error, request::Request};
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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 sp_core::Bytes;
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use std::future::Future;
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/// The other end of an [`Api`]. This should be passed to [`run`](super::run::run).
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pub struct ApiBackend {
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pub(super) request_receiver: mpsc::Receiver<Request>,
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}
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/// Interface to the mixnet service.
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#[derive(Clone)]
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pub struct Api {
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request_sender: mpsc::Sender<Request>,
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}
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impl Api {
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/// Create a new `Api`. The [`ApiBackend`] should be passed to [`run`](super::run::run).
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pub fn new(config: &Config) -> (Self, ApiBackend) {
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let (request_sender, request_receiver) = mpsc::channel(config.substrate.request_buffer);
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(Self { request_sender }, ApiBackend { request_receiver })
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}
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/// Submit an extrinsic via the mixnet.
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///
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/// Returns a [`Future`] which returns another `Future`.
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///
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/// The first `Future` resolves as soon as there is space in the mixnet service queue. The
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/// second `Future` resolves once a reply is received over the mixnet (or sooner if there is an
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/// error).
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///
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/// The first `Future` references `self`, but the second does not. This makes it possible to
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/// submit concurrent mixnet requests using a single `Api` instance.
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pub async fn submit_extrinsic(
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&mut self,
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extrinsic: Bytes,
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) -> impl Future<Output = Result<(), Error>> {
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let (reply_sender, reply_receiver) = oneshot::channel();
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let res = self
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.request_sender
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.feed(Request::SubmitExtrinsic { extrinsic, reply_sender })
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.await;
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async move {
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res.map_err(|_| Error::ServiceUnavailable)?;
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reply_receiver.await.map_err(|_| Error::ServiceUnavailable)?
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}
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}
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}
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