object_store/aws/
checksum.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use crate::config::Parse;
19use std::str::FromStr;
20
21#[allow(non_camel_case_types)]
22#[derive(Debug, Clone, Copy, PartialEq, Eq)]
23/// Enum representing checksum algorithm supported by S3.
24pub enum Checksum {
25    /// SHA-256 algorithm.
26    SHA256,
27}
28
29impl std::fmt::Display for Checksum {
30    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
31        match &self {
32            Self::SHA256 => write!(f, "sha256"),
33        }
34    }
35}
36
37impl FromStr for Checksum {
38    type Err = ();
39
40    fn from_str(s: &str) -> Result<Self, Self::Err> {
41        match s.to_lowercase().as_str() {
42            "sha256" => Ok(Self::SHA256),
43            _ => Err(()),
44        }
45    }
46}
47
48impl TryFrom<&String> for Checksum {
49    type Error = ();
50
51    fn try_from(value: &String) -> Result<Self, Self::Error> {
52        value.parse()
53    }
54}
55
56impl Parse for Checksum {
57    fn parse(v: &str) -> crate::Result<Self> {
58        v.parse().map_err(|_| crate::Error::Generic {
59            store: "Config",
60            source: format!("\"{v}\" is not a valid checksum algorithm").into(),
61        })
62    }
63}
object_store/aws/checksum.rs

object_store/aws/
checksum.rs
