engula_journal/error.rs
1// Copyright 2021 The Engula Authors.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use thiserror::Error;
16
17/// Errors for all journal operations.
18#[derive(Error, Debug)]
19pub enum Error {
20 #[error("{0} is not found")]
21 NotFound(String),
22 #[error("{0} already exists")]
23 AlreadyExists(String),
24 #[error("{0}")]
25 InvalidArgument(String),
26 #[error(transparent)]
27 Io(#[from] std::io::Error),
28 #[error("corrupted: {0}")]
29 Corrupted(String),
30 #[error("unknown: {0}")]
31 Unknown(String),
32}
33
34pub type Result<T> = std::result::Result<T, Error>;