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#![feature(exit_status_error)]
pub mod api;
pub mod check;
pub mod dbus;
pub mod log;
pub mod mail;
pub mod web;
use ::log::error;
use anyhow::{anyhow, Result};
use api::make_json_response;
use axum::{
http::HeaderMap,
response::{Html, IntoResponse},
routing::get,
Json, Router,
};
use check::{check_loop, Check};
use chrono::{DateTime, Utc};
use mail::MailConfig;
use reqwest::{
header::{CACHE_CONTROL, CONTENT_TYPE, REFRESH},
StatusCode,
};
use serde::Deserialize;
use std::{collections::BTreeMap, net::SocketAddr, process::exit, sync::Arc};
use tokio::{fs::read_to_string, sync::RwLock};
use web::make_html_page;
pub static GLOBAL_ERROR: RwLock<Option<anyhow::Error>> = RwLock::const_new(None);
#[tokio::main]
async fn main() {
env_logger::init_from_env("LOG");
if let Err(e) = run().await {
error!("{e:?}");
exit(1);
}
}
#[derive(Debug, Deserialize)]
pub struct Config {
mail: Option<MailConfig>,
title: String,
bind: SocketAddr,
interval: u64,
services: Vec<Service>,
}
#[derive(Debug, Deserialize)]
pub struct Service {
title: String,
url: Option<String>,
checks: Vec<Check>,
#[serde(default)]
mail_to: Vec<String>,
}
#[derive(Debug, Clone)]
pub struct Status {
pub time: DateTime<Utc>,
pub status: Result<String, String>,
}
static STATUS: RwLock<BTreeMap<(usize, usize), Status>> = RwLock::const_new(BTreeMap::new());
async fn run() -> anyhow::Result<()> {
let config = std::env::args()
.nth(1)
.ok_or(anyhow!("expected config path as first argument"))?;
let config = read_to_string(config).await?;
let config = Arc::<Config>::new(serde_yml::from_str(&config)?);
for i in 0..config.services.len() {
tokio::task::spawn(check_loop(config.clone(), i));
}
let app = Router::new()
.route(
"/",
get({
let config = config.clone();
move |headers: HeaderMap| async move {
(
[
(
CACHE_CONTROL,
format!("max-age={}, public", config.interval),
),
(REFRESH, format!("{}", config.interval)),
],
if headers
.get("accept")
.map_or(false, |s| s == "application/json")
{
Json(make_json_response(config.clone()).await).into_response()
} else {
Html(make_html_page(config.clone()).await).into_response()
},
)
}
}),
)
.route(
"/font.woff2",
get(|| async {
(
[
(CONTENT_TYPE, "font/woff2"),
(CACHE_CONTROL, "public, immutable"),
],
include_bytes!("cantarell.woff2"),
)
}),
)
.route("/favicon.ico", get(|| async { StatusCode::NO_CONTENT }));
let listener = tokio::net::TcpListener::bind(config.bind).await?;
axum::serve(listener, app).await?;
Ok(())
}
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