serde-file-value

Documentation

A Serde deserializer which transparently loads files as string values.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

A Serde deserializer which transparently loads files as string values.

Usage

Assume we have a /mnt/secrets/my_secret file that looks like:

hunter2

And a conf/config.json that looks like:

{
    "secret_value": "${file:/mnt/secrets/my_secret}"
}

use std::{fs, io, path::Path};

use serde::Deserialize;

#[derive(Deserialize)]
struct Config {
    secret_value: String,
}

let config = fs::read("conf/config.json").unwrap();

let mut deserializer = serde_json::Deserializer::from_slice(&config);
let config: Config = serde_file_value::deserialize(&mut deserializer, |_, _| ()).unwrap();

assert_eq!(config.secret_value, "hunter2");