src/main.rs

   1 #[macro_use]
   2 extern crate diesel_migrations;
   3
   4 use actix::prelude::*;
   5 use actix_web::{web::Data, *};
   6 use diesel::{
   7   r2d2::{ConnectionManager, Pool},
   8   PgConnection,
   9 };
  10 use doku::json::{AutoComments, Formatting};
  11 use lemmy_api::match_websocket_operation;
  12 use lemmy_api_common::{
  13   request::build_user_agent,
  14   utils::{blocking, check_private_instance_and_federation_enabled},
  15 };
  16 use lemmy_api_crud::match_websocket_operation_crud;
  17 use lemmy_db_schema::{source::secret::Secret, utils::get_database_url_from_env};
  18 use lemmy_routes::{feeds, images, nodeinfo, webfinger};
  19 use lemmy_server::{
  20   api_routes,
  21   code_migrations::run_advanced_migrations,
  22   init_logging,
  23   root_span_builder::QuieterRootSpanBuilder,
  24   scheduled_tasks,
  25 };
  26 use lemmy_utils::{
  27   error::LemmyError,
  28   rate_limit::{rate_limiter::RateLimiter, RateLimit},
  29   settings::structs::Settings,
  30 };
  31 use lemmy_websocket::{chat_server::ChatServer, LemmyContext};
  32 use parking_lot::Mutex;
  33 use reqwest::Client;
  34 use reqwest_middleware::ClientBuilder;
  35 use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
  36 use reqwest_tracing::TracingMiddleware;
  37 use std::{env, sync::Arc, thread, time::Duration};
  38 use tracing_actix_web::TracingLogger;
  39
  40 embed_migrations!();
  41
  42 /// Max timeout for http requests
  43 pub const REQWEST_TIMEOUT: Duration = Duration::from_secs(10);
  44
  45 #[actix_web::main]
  46 async fn main() -> Result<(), LemmyError> {
  47   let args: Vec<String> = env::args().collect();
  48   if args.len() == 2 && args[1] == "--print-config-docs" {
  49     let fmt = Formatting {
  50       auto_comments: AutoComments::none(),
  51       ..Default::default()
  52     };
  53     println!("{}", doku::to_json_fmt_val(&fmt, &Settings::default()));
  54     return Ok(());
  55   }
  56
  57   let settings = Settings::init().expect("Couldn't initialize settings.");
  58
  59   init_logging(settings.opentelemetry_url.as_deref())?;
  60
  61   // Set up the r2d2 connection pool
  62   let db_url = match get_database_url_from_env() {
  63     Ok(url) => url,
  64     Err(_) => settings.get_database_url(),
  65   };
  66   let manager = ConnectionManager::<PgConnection>::new(&db_url);
  67   let pool = Pool::builder()
  68     .max_size(settings.database.pool_size)
  69     .build(manager)
  70     .unwrap_or_else(|_| panic!("Error connecting to {}", db_url));
  71
  72   // Run the migrations from code
  73   let protocol_and_hostname = settings.get_protocol_and_hostname();
  74   blocking(&pool, move |conn| {
  75     embedded_migrations::run(conn)?;
  76     run_advanced_migrations(conn, &protocol_and_hostname)?;
  77     Ok(()) as Result<(), LemmyError>
  78   })
  79   .await??;
  80
  81   // Schedules various cleanup tasks for the DB
  82   let pool2 = pool.clone();
  83   thread::spawn(move || {
  84     scheduled_tasks::setup(pool2).expect("Couldn't set up scheduled_tasks");
  85   });
  86
  87   // Set up the rate limiter
  88   let rate_limiter = RateLimit {
  89     rate_limiter: Arc::new(Mutex::new(RateLimiter::default())),
  90     rate_limit_config: settings.rate_limit.to_owned().unwrap_or_default(),
  91   };
  92
  93   // Initialize the secrets
  94   let conn = pool.get()?;
  95   let secret = Secret::init(&conn).expect("Couldn't initialize secrets.");
  96
  97   println!(
  98     "Starting http server at {}:{}",
  99     settings.bind, settings.port
 100   );
 101
 102   let reqwest_client = Client::builder()
 103     .user_agent(build_user_agent(&settings))
 104     .timeout(REQWEST_TIMEOUT)
 105     .build()?;
 106
 107   let retry_policy = ExponentialBackoff {
 108     max_n_retries: 3,
 109     max_retry_interval: REQWEST_TIMEOUT,
 110     min_retry_interval: Duration::from_millis(100),
 111     backoff_exponent: 2,
 112   };
 113
 114   let client = ClientBuilder::new(reqwest_client.clone())
 115     .with(TracingMiddleware)
 116     .with(RetryTransientMiddleware::new_with_policy(retry_policy))
 117     .build();
 118
 119   // Pictrs cannot use the retry middleware
 120   let pictrs_client = ClientBuilder::new(reqwest_client.clone())
 121     .with(TracingMiddleware)
 122     .build();
 123
 124   check_private_instance_and_federation_enabled(&pool, &settings).await?;
 125
 126   let chat_server = ChatServer::startup(
 127     pool.clone(),
 128     rate_limiter.clone(),
 129     |c, i, o, d| Box::pin(match_websocket_operation(c, i, o, d)),
 130     |c, i, o, d| Box::pin(match_websocket_operation_crud(c, i, o, d)),
 131     client.clone(),
 132     settings.clone(),
 133     secret.clone(),
 134   )
 135   .start();
 136
 137   // Create Http server with websocket support
 138   let settings_bind = settings.clone();
 139   HttpServer::new(move || {
 140     let context = LemmyContext::create(
 141       pool.clone(),
 142       chat_server.to_owned(),
 143       client.clone(),
 144       settings.to_owned(),
 145       secret.to_owned(),
 146     );
 147     let rate_limiter = rate_limiter.clone();
 148     App::new()
 149       .wrap(actix_web::middleware::Logger::default())
 150       .wrap(TracingLogger::<QuieterRootSpanBuilder>::new())
 151       .app_data(Data::new(context))
 152       .app_data(Data::new(rate_limiter.clone()))
 153       // The routes
 154       .configure(|cfg| api_routes::config(cfg, &rate_limiter))
 155       .configure(|cfg| lemmy_apub::http::routes::config(cfg, &settings))
 156       .configure(feeds::config)
 157       .configure(|cfg| images::config(cfg, pictrs_client.clone(), &rate_limiter))
 158       .configure(nodeinfo::config)
 159       .configure(|cfg| webfinger::config(cfg, &settings))
 160   })
 161   .bind((settings_bind.bind, settings_bind.port))?
 162   .run()
 163   .await?;
 164
 165   Ok(())
 166 }