gcpauth 0.1.2

Google Cloud Platform server application authentication library.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

use crate::error::Error;
use async_trait::async_trait;
use chrono::DateTime;

pub const TOKEN_URL: &str = "https://oauth2.googleapis.com/token";
pub const AUTH_URL: &str = "https://accounts.google.com/o/oauth2/auth";

#[derive(Debug, Clone)]
pub struct Token {
    pub access_token: String,
    pub token_type: String,
    pub expiry: Option<DateTime<chrono::Utc>>,
}

#[async_trait]
pub trait TokenSource: Send + Sync {
    async fn token(&self) -> Result<Token, Error>;
}

impl Token {
    pub fn value(&self) -> String {
        return format!("Bearer {}", self.access_token);
    }

    pub fn valid(&self) -> bool {
        !self.access_token.is_empty() && !self.expired()
    }

    fn expired(&self) -> bool {
        if self.expiry.is_none() {
            return false;
        }
        let now = chrono::Utc::now();
        let exp = self.expiry.unwrap() + chrono::Duration::seconds(-10);
        return now > exp;
    }
}