src/main.rs

   1 #[macro_use]
   2 extern crate diesel_migrations;
   3
   4 use actix_web::{middleware, web::Data, App, HttpServer, Result};
   5 use diesel_migrations::EmbeddedMigrations;
   6 use doku::json::{AutoComments, CommentsStyle, Formatting, ObjectsStyle};
   7 use lemmy_api_common::{
   8   context::LemmyContext,
   9   lemmy_db_views::structs::SiteView,
  10   request::build_user_agent,
  11   utils::{
  12     check_private_instance_and_federation_enabled,
  13     local_site_rate_limit_to_rate_limit_config,
  14   },
  15   websocket::chat_server::ChatServer,
  16 };
  17 use lemmy_db_schema::{
  18   source::secret::Secret,
  19   utils::{build_db_pool, get_database_url, run_migrations},
  20 };
  21 use lemmy_routes::{feeds, images, nodeinfo, webfinger};
  22 use lemmy_server::{
  23   api_routes_http,
  24   code_migrations::run_advanced_migrations,
  25   init_logging,
  26   root_span_builder::QuieterRootSpanBuilder,
  27   scheduled_tasks,
  28 };
  29 use lemmy_utils::{
  30   error::LemmyError,
  31   rate_limit::RateLimitCell,
  32   settings::{structs::Settings, SETTINGS},
  33 };
  34 use reqwest::Client;
  35 use reqwest_middleware::ClientBuilder;
  36 use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
  37 use reqwest_tracing::TracingMiddleware;
  38 use std::{env, sync::Arc, thread, time::Duration};
  39 use tracing_actix_web::TracingLogger;
  40
  41 pub const MIGRATIONS: EmbeddedMigrations = embed_migrations!();
  42
  43 /// Max timeout for http requests
  44 pub const REQWEST_TIMEOUT: Duration = Duration::from_secs(10);
  45
  46 #[actix_web::main]
  47 async fn main() -> Result<(), LemmyError> {
  48   let args: Vec<String> = env::args().collect();
  49   if args.len() == 2 && args[1] == "--print-config-docs" {
  50     let fmt = Formatting {
  51       auto_comments: AutoComments::none(),
  52       comments_style: CommentsStyle {
  53         separator: "#".to_owned(),
  54       },
  55       objects_style: ObjectsStyle {
  56         surround_keys_with_quotes: false,
  57         use_comma_as_separator: false,
  58       },
  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   let rate_limit_cell = RateLimitCell::new(rate_limit_config).await;
 104
 105   println!(
 106     "Starting http server at {}:{}",
 107     settings.bind, settings.port
 108   );
 109
 110   let reqwest_client = Client::builder()
 111     .user_agent(build_user_agent(&settings))
 112     .timeout(REQWEST_TIMEOUT)
 113     .build()?;
 114
 115   let retry_policy = ExponentialBackoff {
 116     max_n_retries: 3,
 117     max_retry_interval: REQWEST_TIMEOUT,
 118     min_retry_interval: Duration::from_millis(100),
 119     backoff_exponent: 2,
 120   };
 121
 122   let client = ClientBuilder::new(reqwest_client.clone())
 123     .with(TracingMiddleware::default())
 124     .with(RetryTransientMiddleware::new_with_policy(retry_policy))
 125     .build();
 126
 127   // Pictrs cannot use the retry middleware
 128   let pictrs_client = ClientBuilder::new(reqwest_client.clone())
 129     .with(TracingMiddleware::default())
 130     .build();
 131
 132   let chat_server = Arc::new(ChatServer::startup());
 133
 134   // Create Http server with websocket support
 135   let settings_bind = settings.clone();
 136   HttpServer::new(move || {
 137     let context = LemmyContext::create(
 138       pool.clone(),
 139       chat_server.clone(),
 140       client.clone(),
 141       settings.clone(),
 142       secret.clone(),
 143       rate_limit_cell.clone(),
 144     );
 145     App::new()
 146       .wrap(middleware::Logger::default())
 147       .wrap(TracingLogger::<QuieterRootSpanBuilder>::new())
 148       .app_data(Data::new(context))
 149       .app_data(Data::new(rate_limit_cell.clone()))
 150       // The routes
 151       .configure(|cfg| api_routes_http::config(cfg, rate_limit_cell))
 152       .configure(|cfg| {
 153         if federation_enabled {
 154           lemmy_apub::http::routes::config(cfg);
 155           webfinger::config(cfg);
 156         }
 157       })
 158       .configure(feeds::config)
 159       .configure(|cfg| images::config(cfg, pictrs_client.clone(), rate_limit_cell))
 160       .configure(nodeinfo::config)
 161   })
 162   .bind((settings_bind.bind, settings_bind.port))?
 163   .run()
 164   .await?;
 165
 166   Ok(())
 167 }