sc_mixnet/
error.rs

1// This file is part of Substrate.
2
3// Copyright (C) Parity Technologies (UK) Ltd.
4// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
5
6// This program is free software: you can redistribute it and/or modify
7// it under the terms of the GNU General Public License as published by
8// the Free Software Foundation, either version 3 of the License, or
9// (at your option) any later version.
10
11// This program is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License
17// along with this program. If not, see <https://www.gnu.org/licenses/>.
18
19use codec::{Decode, Encode};
20use mixnet::core::PostErr;
21
22/// Error handling a request. Sent in replies over the mixnet.
23#[derive(Debug, thiserror::Error, Decode, Encode)]
24pub enum RemoteErr {
25	/// An error that doesn't map to any of the other variants.
26	#[error("{0}")]
27	Other(String),
28	/// Failed to decode the request.
29	#[error("Failed to decode the request: {0}")]
30	Decode(String),
31}
32
33/// Mixnet error.
34#[derive(Debug, thiserror::Error)]
35pub enum Error {
36	/// Failed to communicate with the mixnet service. Possibly it panicked. The node probably
37	/// needs to be restarted.
38	#[error(
39		"Failed to communicate with the mixnet service; the node probably needs to be restarted"
40	)]
41	ServiceUnavailable,
42	/// Did not receive a reply after the configured number of attempts.
43	#[error("Did not receive a reply from the mixnet after the configured number of attempts")]
44	NoReply,
45	/// Received a malformed reply.
46	#[error("Received a malformed reply from the mixnet")]
47	BadReply,
48	/// Failed to post the request to the mixnet. Note that some [`PostErr`] variants, eg
49	/// [`PostErr::NotEnoughSpaceInQueue`], are handled internally and will never be returned from
50	/// the top-level API.
51	#[error("Failed to post the request to the mixnet: {0}")]
52	Post(#[from] PostErr),
53	/// Error reported by destination mixnode.
54	#[error("Error reported by the destination mixnode: {0}")]
55	Remote(#[from] RemoteErr),
56}
sc_mixnet/error.rs

sc_mixnet/
error.rs
