Files
nuchat/backend/src/main.rs

119 lines
3.1 KiB
Rust

use std::sync::mpsc;
use clap::Parser;
use nuchat::AppState;
use nuchat::Config;
use nuchat::NuState;
use nuchat::app;
use sqlx::Pool;
use sqlx::Postgres;
use tokio::net::TcpListener;
use tokio::signal;
use tracing::info;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
#[derive(Parser, Debug)]
#[command(version, about, long_about = None)]
struct Args {
/// Port to run server on
#[arg(long, default_value_t = 7000)]
port: u32,
/// Host to run server on
#[arg(long, default_value = "127.0.0.1")]
host: String,
/// Admin secret to use, leave blank to disable
#[arg(long)]
admin_secret: Option<String>,
/// postgres base url, should container users and host info
#[arg(long, default_value = "postgres://postgres:postgres@localhost:5432/")]
postgres_url: String,
/// name of database to use
#[arg(long, default_value = "nuchat_dev")]
database: String,
}
#[tokio::main]
async fn main() {
let args = Args::parse();
let config = BinConfig::from_args(args);
tracing_subscriber::registry()
.with(
tracing_subscriber::EnvFilter::try_from_default_env().unwrap_or_else(|_| {
format!("{}=debug,tower_http=debug", env!("CARGO_CRATE_NAME")).into()
}),
)
.with(tracing_subscriber::fmt::layer().with_target(false))
.init();
let pool = Pool::<Postgres>::connect(&config.0.postgres_url)
.await
.expect("Could not connect to database");
let listener = TcpListener::bind(format!("{}:{}", config.0.host, config.0.port))
.await
.unwrap();
tracing::debug!("listening on {}", listener.local_addr().unwrap());
let state = AppState::new(NuState::new(pool.clone(), config.0));
let (app, rx) = app(&state);
axum::serve(listener, app.with_state(state))
.with_graceful_shutdown(shutdown_signal(rx))
.await
.unwrap();
pool.close().await;
info!("Server stopped");
}
#[allow(clippy::unused_async)]
#[allow(unused)]
async fn await_shutdown(rx: mpsc::Receiver<bool>) -> Result<bool, mpsc::RecvError> {
rx.recv()
}
async fn shutdown_signal(rx: mpsc::Receiver<bool>) {
let endpoint = tokio::spawn(async move { rx.recv() }).into_future();
let ctrl_c = async {
signal::ctrl_c()
.await
.expect("failed to install Ctrl+C handler");
};
#[cfg(unix)]
let terminate = async {
signal::unix::signal(signal::unix::SignalKind::terminate())
.expect("failed to install signal handler")
.recv()
.await;
};
#[cfg(not(unix))]
let terminate = std::future::pending::<()>();
tokio::select! {
() = ctrl_c => {},
() = terminate => {},
_ = endpoint => {},
}
info!("Shutting server down gracefully...");
}
struct BinConfig(Config);
impl BinConfig {
fn from_args(args: Args) -> Self {
Self(Config {
port: args.port,
host: args.host,
admin_secret: args.admin_secret,
postgres_url: args.postgres_url,
database_name: args.database,
})
}
}