reqsign_google/provide_credential/file.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
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8//
9// http://www.apache.org/licenses/LICENSE-2.0
10//
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12// software distributed under the License is distributed on an
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14// KIND, either express or implied. See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use log::debug;
19
20use reqsign_core::{Context, ProvideCredential, Result};
21
22use crate::credential::Credential;
23
24use super::parse::parse_credential_bytes;
25
26/// FileCredentialProvider loads Google credentials from an explicit credential file path.
27#[derive(Debug, Clone)]
28pub struct FileCredentialProvider {
29 path: String,
30 scope: Option<String>,
31}
32
33impl FileCredentialProvider {
34 /// Create a new FileCredentialProvider from a credential file path.
35 pub fn new(path: impl Into<String>) -> Self {
36 Self {
37 path: path.into(),
38 scope: None,
39 }
40 }
41
42 /// Set the OAuth2 scope.
43 pub fn with_scope(mut self, scope: impl Into<String>) -> Self {
44 self.scope = Some(scope.into());
45 self
46 }
47}
48
49impl ProvideCredential for FileCredentialProvider {
50 type Credential = Credential;
51
52 async fn provide_credential(&self, ctx: &Context) -> Result<Option<Self::Credential>> {
53 debug!("loading credential from file path: {}", self.path);
54
55 let content = ctx.file_read(&self.path).await?;
56 parse_credential_bytes(ctx, &content, self.scope.clone()).await
57 }
58}