pub mod api_routes_http; pub mod api_routes_websocket; pub mod code_migrations; 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 actix_web::{middleware, web::Data, App, HttpServer, Result}; use doku::json::{AutoComments, CommentsStyle, Formatting, ObjectsStyle}; 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, }, websocket::chat_server::ChatServer, }; 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, settings::{structs::Settings, SETTINGS}, }; use reqwest::Client; use reqwest_middleware::ClientBuilder; use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware}; use reqwest_tracing::TracingMiddleware; use std::{env, sync::Arc, 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; /// 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(); if args.len() == 2 && args[1] == "--print-config-docs" { let fmt = Formatting { auto_comments: AutoComments::none(), comments_style: CommentsStyle { separator: "#".to_owned(), }, objects_style: ObjectsStyle { surround_keys_with_quotes: false, use_comma_as_separator: false, }, ..Default::default() }; println!("{}", doku::to_json_fmt_val(&fmt, &Settings::default())); return Ok(()); } let settings = SETTINGS.to_owned(); // Set up the bb8 connection pool let db_url = get_database_url(Some(&settings)); run_migrations(&db_url); // Run the migrations from code let pool = build_db_pool(&settings).await?; 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) .build()?; let retry_policy = ExponentialBackoff { max_n_retries: 3, max_retry_interval: REQWEST_TIMEOUT, min_retry_interval: Duration::from_millis(100), backoff_exponent: 2, }; let client = ClientBuilder::new(reqwest_client.clone()) .with(TracingMiddleware::default()) .with(RetryTransientMiddleware::new_with_policy(retry_policy)) .build(); // Pictrs cannot use the retry middleware let pictrs_client = ClientBuilder::new(reqwest_client.clone()) .with(TracingMiddleware::default()) .build(); // Schedules various cleanup tasks for the DB thread::spawn(move || { scheduled_tasks::setup(db_url, user_agent).expect("Couldn't set up scheduled_tasks"); }); let chat_server = Arc::new(ChatServer::startup()); // Create Http server with websocket support let settings_bind = settings.clone(); HttpServer::new(move || { let context = LemmyContext::create( pool.clone(), chat_server.clone(), client.clone(), settings.clone(), secret.clone(), rate_limit_cell.clone(), ); App::new() .wrap(middleware::Logger::default()) .wrap(TracingLogger::::new()) .app_data(Data::new(context)) .app_data(Data::new(rate_limit_cell.clone())) // The routes .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 = tracing_subscriber::fmt::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(()) }