pub mod api_routes_http; pub mod code_migrations; #[cfg(feature = "prometheus-metrics")] pub mod prometheus_metrics; pub mod root_span_builder; pub mod scheduled_tasks; #[cfg(feature = "console")] pub mod telemetry; use crate::{code_migrations::run_advanced_migrations, root_span_builder::QuieterRootSpanBuilder}; use activitypub_federation::config::{FederationConfig, FederationMiddleware}; use actix_cors::Cors; use actix_web::{ middleware::{self, ErrorHandlers}, web::Data, App, HttpServer, Result, }; use lemmy_api_common::{ context::LemmyContext, lemmy_db_views::structs::SiteView, request::build_user_agent, utils::{ check_private_instance_and_federation_enabled, local_site_rate_limit_to_rate_limit_config, }, }; use lemmy_apub::{VerifyUrlData, FEDERATION_HTTP_FETCH_LIMIT}; use lemmy_db_schema::{ source::secret::Secret, utils::{build_db_pool, get_database_url, run_migrations}, }; use lemmy_routes::{feeds, images, nodeinfo, webfinger}; use lemmy_utils::{ error::LemmyError, rate_limit::RateLimitCell, response::jsonify_plain_text_errors, settings::SETTINGS, SYNCHRONOUS_FEDERATION, }; use reqwest::Client; use reqwest_middleware::ClientBuilder; use reqwest_tracing::TracingMiddleware; use std::{env, thread, time::Duration}; use tracing::subscriber::set_global_default; use tracing_actix_web::TracingLogger; use tracing_error::ErrorLayer; use tracing_log::LogTracer; use tracing_subscriber::{filter::Targets, layer::SubscriberExt, Layer, Registry}; use url::Url; #[cfg(feature = "prometheus-metrics")] use { actix_web_prom::PrometheusMetricsBuilder, prometheus::default_registry, prometheus_metrics::serve_prometheus, }; /// Max timeout for http requests pub(crate) const REQWEST_TIMEOUT: Duration = Duration::from_secs(10); /// Placing the main function in lib.rs allows other crates to import it and embed Lemmy pub async fn start_lemmy_server() -> Result<(), LemmyError> { let args: Vec = env::args().collect(); let scheduled_tasks_enabled = args.get(1) != Some(&"--disable-scheduled-tasks".to_string()); let settings = SETTINGS.to_owned(); // Run the DB migrations let db_url = get_database_url(Some(&settings)); run_migrations(&db_url); // Set up the connection pool let pool = build_db_pool(&settings).await?; // Run the Code-required migrations run_advanced_migrations(&pool, &settings).await?; // Initialize the secrets let secret = Secret::init(&pool) .await .expect("Couldn't initialize secrets."); // Make sure the local site is set up. let site_view = SiteView::read_local(&pool) .await .expect("local site not set up"); let local_site = site_view.local_site; let federation_enabled = local_site.federation_enabled; if federation_enabled { println!("federation enabled, host is {}", &settings.hostname); } check_private_instance_and_federation_enabled(&local_site)?; // Set up the rate limiter let rate_limit_config = local_site_rate_limit_to_rate_limit_config(&site_view.local_site_rate_limit); let rate_limit_cell = RateLimitCell::new(rate_limit_config).await; println!( "Starting http server at {}:{}", settings.bind, settings.port ); let user_agent = build_user_agent(&settings); let reqwest_client = Client::builder() .user_agent(user_agent.clone()) .timeout(REQWEST_TIMEOUT) .connect_timeout(REQWEST_TIMEOUT) .build()?; let client = ClientBuilder::new(reqwest_client.clone()) .with(TracingMiddleware::default()) .build(); // Pictrs cannot use the retry middleware let pictrs_client = ClientBuilder::new(reqwest_client.clone()) .with(TracingMiddleware::default()) .build(); let context = LemmyContext::create( pool.clone(), client.clone(), secret.clone(), rate_limit_cell.clone(), ); if scheduled_tasks_enabled { // Schedules various cleanup tasks for the DB thread::spawn({ let context = context.clone(); move || { scheduled_tasks::setup(db_url, user_agent, context) .expect("Couldn't set up scheduled_tasks"); } }); } #[cfg(feature = "prometheus-metrics")] serve_prometheus(settings.prometheus.as_ref(), context.clone()); let settings_bind = settings.clone(); let federation_config = FederationConfig::builder() .domain(settings.hostname.clone()) .app_data(context.clone()) .client(client.clone()) .http_fetch_limit(FEDERATION_HTTP_FETCH_LIMIT) .worker_count(settings.worker_count) .retry_count(settings.retry_count) .debug(*SYNCHRONOUS_FEDERATION) .http_signature_compat(true) .url_verifier(Box::new(VerifyUrlData(context.pool().clone()))) .build() .await?; // this must come before the HttpServer creation // creates a middleware that populates http metrics for each path, method, and status code #[cfg(feature = "prometheus-metrics")] let prom_api_metrics = PrometheusMetricsBuilder::new("lemmy_api") .registry(default_registry().clone()) .build() .unwrap(); // Create Http server with websocket support HttpServer::new(move || { let cors_origin = std::env::var("LEMMY_CORS_ORIGIN"); let cors_config = match (cors_origin, cfg!(debug_assertions)) { (Ok(origin), false) => Cors::default() .allowed_origin(&origin) .allowed_origin(&settings.get_protocol_and_hostname()), _ => Cors::default() .allow_any_origin() .allow_any_method() .allow_any_header() .expose_any_header() .max_age(3600), }; let app = App::new() .wrap(middleware::Logger::new( // This is the default log format save for the usage of %{r}a over %a to guarantee to record the client's (forwarded) IP and not the last peer address, since the latter is frequently just a reverse proxy "%{r}a '%r' %s %b '%{Referer}i' '%{User-Agent}i' %T", )) .wrap(middleware::Compress::default()) .wrap(cors_config) .wrap(TracingLogger::::new()) .wrap(ErrorHandlers::new().default_handler(jsonify_plain_text_errors)) .app_data(Data::new(context.clone())) .app_data(Data::new(rate_limit_cell.clone())) .wrap(FederationMiddleware::new(federation_config.clone())); #[cfg(feature = "prometheus-metrics")] let app = app.wrap(prom_api_metrics.clone()); // The routes app .configure(|cfg| api_routes_http::config(cfg, rate_limit_cell)) .configure(|cfg| { if federation_enabled { lemmy_apub::http::routes::config(cfg); webfinger::config(cfg); } }) .configure(feeds::config) .configure(|cfg| images::config(cfg, pictrs_client.clone(), rate_limit_cell)) .configure(nodeinfo::config) }) .bind((settings_bind.bind, settings_bind.port))? .run() .await?; Ok(()) } pub fn init_logging(opentelemetry_url: &Option) -> Result<(), LemmyError> { LogTracer::init()?; let log_description = std::env::var("RUST_LOG").unwrap_or_else(|_| "info".into()); let targets = log_description .trim() .trim_matches('"') .parse::()?; let format_layer = { #[cfg(feature = "json-log")] let layer = tracing_subscriber::fmt::layer().json(); #[cfg(not(feature = "json-log"))] let layer = tracing_subscriber::fmt::layer(); layer.with_filter(targets.clone()) }; let subscriber = Registry::default() .with(format_layer) .with(ErrorLayer::default()); if let Some(_url) = opentelemetry_url { #[cfg(feature = "console")] telemetry::init_tracing(_url.as_ref(), subscriber, targets)?; #[cfg(not(feature = "console"))] tracing::error!("Feature `console` must be enabled for opentelemetry tracing"); } else { set_global_default(subscriber)?; } Ok(()) }