endstat/src/main.rs

#![forbid(unsafe_code)]

extern crate actix;
extern crate actix_web;
extern crate chrono;
extern crate env_logger;
extern crate reqwest;
extern crate ron;
extern crate serde;
extern crate tokio;
#[macro_use]
extern crate tera;
extern crate ring;

mod config;
mod handlers;
mod results;
mod updater;

use self::{config::*, handlers::*, results::QueryResults, updater::*};
use actix::System;
use actix_web::{middleware::Logger, web::resource, App, HttpServer};
use ron::de::from_str;
use std::{
    env::var,
    fs::read_to_string,
    sync::{Arc, RwLock},
    time::Duration,
};
use tokio::{
    prelude::{Future, Stream},
    timer::Interval,
};

pub type State = Arc<RwLock<QueryResults>>;

fn main() {
    System::run(|| {
        let conf_file_loc =
            var("ENDSTAT_CONF").unwrap_or_else(|_| String::from("./config/endstat_conf.ron"));
        let config = from_str::<Config>(
            &read_to_string(&conf_file_loc).expect(&format!("finding {}", conf_file_loc)),
        )
        .unwrap();
        let bind_addr = &config.bind_address;
        std::env::set_var("RUST_LOG", "actix_web=info");
        env_logger::init();

        let state = Arc::new(RwLock::new(QueryResults::new(config.clone())));

        let clone_state = Arc::clone(&state);

        HttpServer::new(move || {
            let tera = compile_templates!("./templates/**/*");
            let state = Arc::clone(&state);

            App::new()
                .data(state)
                .data(tera)
                .wrap(Logger::default())
                .service(resource("/").to(index))
                .service(resource("/api").to(json_endpoint))
        })
        .bind(&bind_addr)
        .expect("Could not bind to address!")
        .start();

        tokio::spawn(
            Interval::new_interval(Duration::from_secs(config.refresh_time))
                .for_each(move |_| {
                    update_state(Arc::clone(&clone_state));
                    Ok(())
                })
                .map_err(|_| ()),
        );
    })
    .expect("Could not run system!");
}