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/*
Hurry Curry! - a game about cooking
Copyright 2024 metamuffin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, version 3 of the License only.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
pub mod conn_test;
pub mod list;
pub mod register;
use hurrycurry_protocol::registry::Entry;
use list::{generate_html_list, generate_json_list, r_list};
use log::{error, info};
use register::r_register;
use rocket::{get, routes, Config};
use std::{
cmp::Reverse,
collections::HashMap,
env::var,
net::{IpAddr, Ipv4Addr},
str::FromStr,
sync::Arc,
time::{Duration, Instant},
};
use tokio::{sync::RwLock, time::interval};
const MAX_ADDR_CACHE: usize = 4096;
const MAX_SERVERS: usize = 128;
fn main() {
env_logger::init_from_env("LOG");
let registry = Arc::new(RwLock::new(Registry::default()));
tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()
.unwrap()
.block_on(async move {
tokio::task::spawn(Registry::update_loop(registry.clone()));
rocket::build()
.configure(Config {
address: var("BIND_ADDR")
.map(|a| IpAddr::from_str(&a).unwrap())
.unwrap_or(IpAddr::V4(Ipv4Addr::LOCALHOST)),
port: var("PORT").map(|p| p.parse().unwrap()).unwrap_or(27033),
..Default::default()
})
.manage(registry)
.mount("/", routes![r_index, r_list, r_register])
.ignite()
.await
.unwrap()
.launch()
.await
.unwrap()
});
}
#[derive(Default)]
struct Registry {
json_response: Arc<str>,
html_response: Arc<str>,
servers: HashMap<u128, InternalEntry>,
}
impl Registry {
pub async fn update_loop(r: Arc<RwLock<Self>>) {
let mut interval = interval(Duration::from_secs(
var("UPDATE_INTERVAL")
.map(|e| e.parse::<u64>().unwrap())
.unwrap_or(60),
));
loop {
interval.tick().await;
if let Err(e) = r.write().await.update() {
error!("update failed: {e}")
}
}
}
pub fn update(&mut self) -> anyhow::Result<()> {
info!("updating list");
self.remove_dead();
let mut list = self
.servers
.values()
.map(|e| Entry {
name: e.name.clone(),
address: e.address.keys().cloned().collect(),
last_game: e.last_game,
players_online: e.players_online,
version: e.version,
})
.collect::<Vec<_>>();
list.sort_by_key(|e| Reverse(e.players_online));
self.json_response = generate_json_list(&list)?;
self.html_response = generate_html_list(&list)?;
info!("done. {} servers registered", self.servers.len());
Ok(())
}
pub fn remove_dead(&mut self) {
self.servers.retain(|_, e| {
e.address
.retain(|_, updated| updated.elapsed() < Duration::from_secs(120));
e.address.len() > 0
});
}
}
#[derive(Debug)]
struct InternalEntry {
name: String,
address: HashMap<String, Instant>,
players_online: usize,
last_game: i64,
version: (u32, u32),
}
impl Default for InternalEntry {
fn default() -> Self {
Self {
address: HashMap::new(),
last_game: 0,
name: String::new(),
players_online: 0,
version: (0, 0),
}
}
}
#[get("/")]
fn r_index() -> &'static str {
"Hurry Curry! Server Registry Service"
}
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