sp_consensus/
error.rs

1// This file is part of Substrate.
2
3// Copyright (C) Parity Technologies (UK) Ltd.
4// SPDX-License-Identifier: Apache-2.0
5
6// Licensed under the Apache License, Version 2.0 (the "License");
7// you may not use this file except in compliance with the License.
8// You may obtain a copy of the License at
9//
10// 	http://www.apache.org/licenses/LICENSE-2.0
11//
12// Unless required by applicable law or agreed to in writing, software
13// distributed under the License is distributed on an "AS IS" BASIS,
14// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15// See the License for the specific language governing permissions and
16// limitations under the License.
17
18//! Error types for consensus modules.
19
20/// Result type alias.
21pub type Result<T> = std::result::Result<T, Error>;
22
23/// The error type for consensus-related operations.
24#[derive(Debug, thiserror::Error)]
25pub enum Error {
26	/// Missing state at block with given descriptor.
27	#[error("State unavailable at block {0}")]
28	StateUnavailable(String),
29	/// Intermediate missing.
30	#[error("Missing intermediate")]
31	NoIntermediate,
32	/// Intermediate is of wrong type.
33	#[error("Invalid intermediate")]
34	InvalidIntermediate,
35	/// Error checking signature.
36	#[error("Message signature {0:?} by {1:?} is invalid")]
37	InvalidSignature(Vec<u8>, Vec<u8>),
38	/// Invalid authorities set received from the runtime.
39	#[error("Current state of blockchain has invalid authorities set")]
40	InvalidAuthoritiesSet,
41	/// Justification requirements not met.
42	#[error("Invalid justification")]
43	InvalidJustification,
44	/// Error from the client while importing.
45	#[error("Import failed: {0}")]
46	ClientImport(String),
47	/// Error from the client while fetching some data from the chain.
48	#[error("Chain lookup failed: {0}")]
49	ChainLookup(String),
50	/// Signing failed.
51	#[error("Failed to sign: {0}")]
52	CannotSign(String),
53	/// Some other error.
54	#[error(transparent)]
55	Other(#[from] Box<dyn std::error::Error + Sync + Send + 'static>),
56}
sp_consensus/error.rs

sp_consensus/
error.rs
