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