bayou 0.1.3

iot real-time analytics
Documentation 
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use config::{Config, ConfigError, Environment, File};
use log::info;
use serde::Deserialize;

#[derive(Debug, Deserialize)]
#[allow(unused)]
pub struct Logs {
  pub path: String,
  pub files: usize,
}

#[derive(Debug, Deserialize)]
#[allow(unused)]
pub struct MQTT {
  pub host: String,
  pub port: u16,
  pub topic: String,
}

#[derive(Debug, Deserialize)]
#[allow(unused)]
pub struct Settings {
  pub debug: bool,
  pub mqtt: MQTT,
  pub logs: Logs,
}

impl Settings {
  pub fn new(cfg_file: String) -> Result<Self, ConfigError> {
    let cfg_file_path = if cfg_file.is_empty() {
      "config/default"
      // let home = env::var("HOME").unwrap();
      // format!("{}{}", home, "/.lobo")
    } else {
      &cfg_file
    };
    info!("Config file as {:?}", cfg_file_path);
    let s = Config::builder()
      .add_source(File::with_name(cfg_file_path))
      // Add in settings from the environment (with a prefix of APP)
      // Eg.. `APP_DEBUG=1 ./target/app` would set the `debug` key
      .add_source(Environment::with_prefix("app"))
      // You may also programmatically change settings
      // .set_override("database.url", "postgres://")?
      .build()?;

    // Now that we're done, let's access our configuration
    // println!("debug: {:?}", s.get_bool("debug"));

    // You can deserialize (and thus freeze) the entire configuration as
    s.try_deserialize()
  }
}