src/main.rs

   1 #[macro_use]
   2 extern crate diesel_migrations;
   3
   4 use actix::prelude::*;
   5 use actix_web::{middleware, web::Data, App, HttpServer, Result};
   6 use diesel_migrations::EmbeddedMigrations;
   7 use doku::json::{AutoComments, CommentsStyle, Formatting, ObjectsStyle};
   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::RateLimitCell,
  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::{env, thread, time::Duration};
  41 use tracing_actix_web::TracingLogger;
  42
  43 pub const MIGRATIONS: EmbeddedMigrations = embed_migrations!();
  44
  45 /// Max timeout for http requests
  46 pub const REQWEST_TIMEOUT: Duration = Duration::from_secs(10);
  47
  48 #[actix_web::main]
  49 async fn main() -> Result<(), LemmyError> {
  50   let args: Vec<String> = env::args().collect();
  51   if args.len() == 2 && args[1] == "--print-config-docs" {
  52     let fmt = Formatting {
  53       auto_comments: AutoComments::none(),
  54       comments_style: CommentsStyle {
  55         separator: "#".to_owned(),
  56       },
  57       objects_style: ObjectsStyle {
  58         surround_keys_with_quotes: false,
  59         use_comma_as_separator: false,
  60       },
  61       ..Default::default()
  62     };
  63     println!("{}", doku::to_json_fmt_val(&fmt, &Settings::default()));
  64     return Ok(());
  65   }
  66
  67   let settings = SETTINGS.to_owned();
  68
  69   init_logging(&settings.opentelemetry_url)?;
  70
  71   // Set up the bb8 connection pool
  72   let db_url = get_database_url(Some(&settings));
  73   run_migrations(&db_url);
  74
  75   // Run the migrations from code
  76   let pool = build_db_pool(&settings).await?;
  77   run_advanced_migrations(&pool, &settings).await?;
  78
  79   // Schedules various cleanup tasks for the DB
  80   thread::spawn(move || {
  81     scheduled_tasks::setup(db_url).expect("Couldn't set up scheduled_tasks");
  82   });
  83
  84   // Initialize the secrets
  85   let secret = Secret::init(&pool)
  86     .await
  87     .expect("Couldn't initialize secrets.");
  88
  89   // Make sure the local site is set up.
  90   let site_view = SiteView::read_local(&pool)
  91     .await
  92     .expect("local site not set up");
  93   let local_site = site_view.local_site;
  94   let federation_enabled = local_site.federation_enabled;
  95
  96   if federation_enabled {
  97     println!("federation enabled, host is {}", &settings.hostname);
  98   }
  99
 100   check_private_instance_and_federation_enabled(&local_site)?;
 101
 102   // Set up the rate limiter
 103   let rate_limit_config =
 104     local_site_rate_limit_to_rate_limit_config(&site_view.local_site_rate_limit);
 105   let rate_limit_cell = RateLimitCell::new(rate_limit_config).await;
 106
 107   println!(
 108     "Starting http server at {}:{}",
 109     settings.bind, settings.port
 110   );
 111
 112   let reqwest_client = Client::builder()
 113     .user_agent(build_user_agent(&settings))
 114     .timeout(REQWEST_TIMEOUT)
 115     .build()?;
 116
 117   let retry_policy = ExponentialBackoff {
 118     max_n_retries: 3,
 119     max_retry_interval: REQWEST_TIMEOUT,
 120     min_retry_interval: Duration::from_millis(100),
 121     backoff_exponent: 2,
 122   };
 123
 124   let client = ClientBuilder::new(reqwest_client.clone())
 125     .with(TracingMiddleware::default())
 126     .with(RetryTransientMiddleware::new_with_policy(retry_policy))
 127     .build();
 128
 129   // Pictrs cannot use the retry middleware
 130   let pictrs_client = ClientBuilder::new(reqwest_client.clone())
 131     .with(TracingMiddleware::default())
 132     .build();
 133
 134   let chat_server = ChatServer::startup(
 135     pool.clone(),
 136     |c, i, o, d| Box::pin(match_websocket_operation(c, i, o, d)),
 137     |c, i, o, d| Box::pin(match_websocket_operation_crud(c, i, o, d)),
 138     client.clone(),
 139     settings.clone(),
 140     secret.clone(),
 141     rate_limit_cell.clone(),
 142   )
 143   .start();
 144
 145   // Create Http server with websocket support
 146   let settings_bind = settings.clone();
 147   HttpServer::new(move || {
 148     let context = LemmyContext::create(
 149       pool.clone(),
 150       chat_server.clone(),
 151       client.clone(),
 152       settings.clone(),
 153       secret.clone(),
 154       rate_limit_cell.clone(),
 155     );
 156     App::new()
 157       .wrap(middleware::Logger::default())
 158       .wrap(TracingLogger::<QuieterRootSpanBuilder>::new())
 159       .app_data(Data::new(context))
 160       .app_data(Data::new(rate_limit_cell.clone()))
 161       // The routes
 162       .configure(|cfg| api_routes::config(cfg, rate_limit_cell))
 163       .configure(|cfg| {
 164         if federation_enabled {
 165           lemmy_apub::http::routes::config(cfg);
 166           webfinger::config(cfg);
 167         }
 168       })
 169       .configure(feeds::config)
 170       .configure(|cfg| images::config(cfg, pictrs_client.clone(), rate_limit_cell))
 171       .configure(nodeinfo::config)
 172   })
 173   .bind((settings_bind.bind, settings_bind.port))?
 174   .run()
 175   .await?;
 176
 177   Ok(())
 178 }