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_migrations::EmbeddedMigrations;
   7 use doku::json::{AutoComments, Formatting};
   8 use lemmy_api::match_websocket_operation;
   9 use lemmy_api_common::{
  10   lemmy_db_views::structs::SiteView,
  11   request::build_user_agent,
  12   utils::{
  13     check_private_instance_and_federation_enabled,
  14     local_site_rate_limit_to_rate_limit_config,
  15   },
  16 };
  17 use lemmy_api_crud::match_websocket_operation_crud;
  18 use lemmy_db_schema::{
  19   source::secret::Secret,
  20   utils::{build_db_pool, get_database_url, run_migrations},
  21 };
  22 use lemmy_routes::{feeds, images, nodeinfo, webfinger};
  23 use lemmy_server::{
  24   api_routes,
  25   code_migrations::run_advanced_migrations,
  26   init_logging,
  27   root_span_builder::QuieterRootSpanBuilder,
  28   scheduled_tasks,
  29 };
  30 use lemmy_utils::{
  31   error::LemmyError,
  32   rate_limit::{rate_limiter::RateLimiter, RateLimit},
  33   settings::{structs::Settings, SETTINGS},
  34 };
  35 use lemmy_websocket::{chat_server::ChatServer, LemmyContext};
  36 use reqwest::Client;
  37 use reqwest_middleware::ClientBuilder;
  38 use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
  39 use reqwest_tracing::TracingMiddleware;
  40 use std::{
  41   env,
  42   sync::{Arc, Mutex},
  43   thread,
  44   time::Duration,
  45 };
  46 use tracing_actix_web::TracingLogger;
  47
  48 pub const MIGRATIONS: EmbeddedMigrations = embed_migrations!();
  49
  50 /// Max timeout for http requests
  51 pub const REQWEST_TIMEOUT: Duration = Duration::from_secs(10);
  52
  53 #[actix_web::main]
  54 async fn main() -> Result<(), LemmyError> {
  55   let args: Vec<String> = env::args().collect();
  56   if args.len() == 2 && args[1] == "--print-config-docs" {
  57     let fmt = Formatting {
  58       auto_comments: AutoComments::none(),
  59       ..Default::default()
  60     };
  61     println!("{}", doku::to_json_fmt_val(&fmt, &Settings::default()));
  62     return Ok(());
  63   }
  64
  65   let settings = SETTINGS.to_owned();
  66
  67   init_logging(&settings.opentelemetry_url)?;
  68
  69   // Set up the bb8 connection pool
  70   let db_url = get_database_url(Some(&settings));
  71   run_migrations(&db_url);
  72
  73   // Run the migrations from code
  74   let pool = build_db_pool(&settings).await?;
  75   run_advanced_migrations(&pool, &settings).await?;
  76
  77   // Schedules various cleanup tasks for the DB
  78   thread::spawn(move || {
  79     scheduled_tasks::setup(db_url).expect("Couldn't set up scheduled_tasks");
  80   });
  81
  82   // Initialize the secrets
  83   let secret = Secret::init(&pool)
  84     .await
  85     .expect("Couldn't initialize secrets.");
  86
  87   // Make sure the local site is set up.
  88   let site_view = SiteView::read_local(&pool)
  89     .await
  90     .expect("local site not set up");
  91   let local_site = site_view.local_site;
  92   let federation_enabled = local_site.federation_enabled;
  93
  94   if federation_enabled {
  95     println!("federation enabled, host is {}", &settings.hostname);
  96   }
  97
  98   check_private_instance_and_federation_enabled(&local_site)?;
  99
 100   // Set up the rate limiter
 101   let rate_limit_config =
 102     local_site_rate_limit_to_rate_limit_config(&site_view.local_site_rate_limit);
 103
 104   // TODO this isn't live-updating
 105   // https://github.com/LemmyNet/lemmy/issues/2508
 106   let rate_limiter = RateLimit {
 107     rate_limiter: Arc::new(Mutex::new(RateLimiter::default())),
 108     rate_limit_config,
 109   };
 110
 111   println!(
 112     "Starting http server at {}:{}",
 113     settings.bind, settings.port
 114   );
 115
 116   let reqwest_client = Client::builder()
 117     .user_agent(build_user_agent(&settings))
 118     .timeout(REQWEST_TIMEOUT)
 119     .build()?;
 120
 121   let retry_policy = ExponentialBackoff {
 122     max_n_retries: 3,
 123     max_retry_interval: REQWEST_TIMEOUT,
 124     min_retry_interval: Duration::from_millis(100),
 125     backoff_exponent: 2,
 126   };
 127
 128   let client = ClientBuilder::new(reqwest_client.clone())
 129     .with(TracingMiddleware::default())
 130     .with(RetryTransientMiddleware::new_with_policy(retry_policy))
 131     .build();
 132
 133   // Pictrs cannot use the retry middleware
 134   let pictrs_client = ClientBuilder::new(reqwest_client.clone())
 135     .with(TracingMiddleware::default())
 136     .build();
 137
 138   let chat_server = ChatServer::startup(
 139     pool.clone(),
 140     rate_limiter.clone(),
 141     |c, i, o, d| Box::pin(match_websocket_operation(c, i, o, d)),
 142     |c, i, o, d| Box::pin(match_websocket_operation_crud(c, i, o, d)),
 143     client.clone(),
 144     settings.clone(),
 145     secret.clone(),
 146   )
 147   .start();
 148
 149   // Create Http server with websocket support
 150   let settings_bind = settings.clone();
 151   HttpServer::new(move || {
 152     let context = LemmyContext::create(
 153       pool.clone(),
 154       chat_server.to_owned(),
 155       client.clone(),
 156       settings.to_owned(),
 157       secret.to_owned(),
 158     );
 159     let rate_limiter = rate_limiter.clone();
 160     App::new()
 161       .wrap(actix_web::middleware::Logger::default())
 162       .wrap(TracingLogger::<QuieterRootSpanBuilder>::new())
 163       .app_data(Data::new(context))
 164       .app_data(Data::new(rate_limiter.clone()))
 165       // The routes
 166       .configure(|cfg| api_routes::config(cfg, &rate_limiter))
 167       .configure(|cfg| {
 168         if federation_enabled {
 169           lemmy_apub::http::routes::config(cfg);
 170           webfinger::config(cfg);
 171         }
 172       })
 173       .configure(feeds::config)
 174       .configure(|cfg| images::config(cfg, pictrs_client.clone(), &rate_limiter))
 175       .configure(nodeinfo::config)
 176   })
 177   .bind((settings_bind.bind, settings_bind.port))?
 178   .run()
 179   .await?;
 180
 181   Ok(())
 182 }