100 lines
3.2 KiB
Rust
100 lines
3.2 KiB
Rust
use std::{future::ready, net::SocketAddr};
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use axum::{
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extract::Extension,
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http::StatusCode,
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middleware,
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routing::{get, get_service},
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Router,
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};
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use tower_http::{auth::RequireAuthorizationLayer, services::ServeDir, trace::TraceLayer};
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use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
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mod api;
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mod matrix;
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mod metrics;
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/// Name of the directory where static sites are stored inside the data directory
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const STATIC_DIR_NAME: &str = "static";
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/// Name of the subdir of STATIC_DIR_NAME where the default (fallback) site is located
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const DEFAULT_STATIC_SITE: &str = "default";
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#[tokio::main]
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async fn main() {
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// Enable tracing
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tracing_subscriber::registry()
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.with(tracing_subscriber::EnvFilter::new(
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std::env::var("RUST_LOG").unwrap_or_else(|_| "site=debug,tower_http=debug".into()),
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))
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.with(tracing_subscriber::fmt::layer())
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.init();
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// Get required variables from env vars
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let api_key = std::env::var("API_KEY").expect("No API_KEY was provided.");
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let data_dir = std::env::var("DATA_DIR").expect("No DATA_DIR was provided.");
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let static_dir = format!("{}/{}", data_dir, STATIC_DIR_NAME);
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std::fs::create_dir_all(&static_dir);
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// Initialize metrics
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let recorder_handle = metrics::setup_metrics_recorder();
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let mut app = Router::new()
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// Handle Matrix .well-known files
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.nest("/", matrix::router())
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// Routes under /api path
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.nest(
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"/api",
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api::router().layer(RequireAuthorizationLayer::bearer(&api_key)),
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)
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.route("/metrics", get(move || ready(recorder_handle.render())));
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// Each static site gets mounted explicitely so that the default site can be used as fallback
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// Each entry is of the form (route, static dir name)
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let sites = [
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("/docs/vieter", "docs-vieter"),
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("/api-docs/vieter", "api-docs-vieter"),
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];
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for (path, dir) in sites {
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let full_path = format!("{}/{}", static_dir, dir);
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app = app.nest(
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path,
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get_service(ServeDir::new(full_path)).handle_error(
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|error: std::io::Error| async move {
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(
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StatusCode::INTERNAL_SERVER_ERROR,
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format!("Unhandled internal error: {}", error),
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)
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},
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),
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);
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}
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app = app
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// The fallback option is to serve the actual static files
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.fallback(
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get_service(ServeDir::new(format!(
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"{}/{}",
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static_dir, DEFAULT_STATIC_SITE
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)))
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.handle_error(|error: std::io::Error| async move {
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(
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StatusCode::INTERNAL_SERVER_ERROR,
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format!("Unhandled internal error: {}", error),
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)
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}),
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)
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.layer(middleware::from_fn(metrics::track_metrics))
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.layer(Extension(data_dir))
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.layer(TraceLayer::new_for_http());
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let addr = SocketAddr::from(([0, 0, 0, 0], 3000));
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tracing::debug!("listening on {}", addr);
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axum::Server::bind(&addr)
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.serve(app.into_make_service())
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.await
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.unwrap();
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}
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