Socket Addrs

[michaeldjeffrey]

• SocketAddr can be parsed directly from a config file. This moves potential errors even earlier in the bootup process.
• During tests, get an assigned open port from the OS. This removes the small chance you get a conflicting port when running tests locally.

[jeffgrunewald]

since this operation is fallible clap is able to do this automatically when not using the default method? this doesn't need any additional annotations for the serde macro or anything?

[michaeldjeffrey]

afaik the only requirement is the type implements FromStr, then Clap and Serde will attempt to convert into the type using that.

#[test]
fn test_config_parse() {
    use std::net::SocketAddr;

    #[derive(Debug, serde::Deserialize)]
    struct TestSettings {
        one: SocketAddr,
        #[serde(default = "default_two")]
        two: SocketAddr,
    }

    fn default_two() -> SocketAddr {
        "1.2.3.4:19001".parse().unwrap()
    }

    let x: TestSettings = config::Config::builder()
        .add_source(File::with_name("./socket_addr_test.toml"))
        .build()
        .and_then(|config| config.try_deserialize())
        .expect("valid settings");

    println!("config: {x:?}");
}