阿里云 STS SDK

实现了 AssumeRole API 的调用，生成一对临时的访问 ID 和访问密钥，可以让前端利用 ali oss 库上传比较大的文件。

如果在后端传输文件，请查看 ali-oss-rs，提供了比较完整的阿里云 OSS API 调用。

使用比较简单：

async fn test_assume_role() {
    simple_logger::init_with_level(log::Level::Debug).unwrap();
    dotenv::dotenv().ok();

    let aid = dotenv::var("ACCESS_KEY_ID").unwrap();
    let asec = dotenv::var("ACCESS_KEY_SECRET").unwrap();
    let arn = dotenv::var("ARN").unwrap();
    let role_session_name = "aliyun-sts-rust-sdk";

    let policy = Policy {
        version: Versions::V1,
        statement: vec![
            StatementBlock {
                action: StringOrArray::ArrayValue(vec!["oss:*".to_owned()]),
                effect: Effects::Allow,
                resource: StringOrArray::ArrayValue(vec!["acs:oss:*:*:mi-dev-public/yuanyq-test/file-from-rust.zip".to_owned()]),
                condition: None,
            }
        ]
    };

    let req = AssumeRoleRequest::new(&arn, role_session_name, Some(policy), 3600);
    let client = StsClient::new("sts.aliyuncs.com", &aid, &asec);

    match client.assume_role(req).await {
        Ok(r) => {
            assert!(r.credentials.is_some());
        },
        Err(e) => println!("{:?}", e)
    }
}

或者，调用便捷的函数：sts_for_put_object:

client.sts_for_put_object(&arn, "mi-dev-public", "yuanyq-test/file-from-rust.zip", 3600)