Config

Example

#![allow(unused)]
fn main() {
#[derive(serde::Deserialize)]
pub struct Settings {
    pub database: DatabaseSettings,
    pub application_port: u16,
}

#[derive(serde::Deserialize)]
pub struct DatabaseSettings {
    pub username: String,
    pub password: String,
    pub port: u16,
    pub host: String,
    pub database_name: String,
}

pub fn get_configuration() -> Result<Settings, config::ConfigError> {
    let mut settings = config::Config::default();
    settings.merge(config::File::with_name("configuration"))?;
    settings.try_into()
}
}

Where configuration.yaml looks like:

application_port: 8000
database:
  host: "localhost"
  port: 5432
  username: "postgres"
  password: "password"
  database_name: "newsletter"