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_common::{
   9   context::LemmyContext,
  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 };
  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   api_routes::{
  26     match_websocket_operation,
  27     match_websocket_operation_apub,
  28     match_websocket_operation_crud,
  29   },
  30   code_migrations::run_advanced_migrations,
  31   init_logging,
  32   root_span_builder::QuieterRootSpanBuilder,
  33   scheduled_tasks,
  34 };
  35 use lemmy_utils::{
  36   error::LemmyError,
  37   rate_limit::RateLimitCell,
  38   settings::{structs::Settings, SETTINGS},
  39 };
  40 use reqwest::Client;
  41 use reqwest_middleware::ClientBuilder;
  42 use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
  43 use reqwest_tracing::TracingMiddleware;
  44 use std::{env, thread, time::Duration};
  45 use tracing_actix_web::TracingLogger;
  46
  47 pub const MIGRATIONS: EmbeddedMigrations = embed_migrations!();
  48
  49 /// Max timeout for http requests
  50 pub const REQWEST_TIMEOUT: Duration = Duration::from_secs(10);
  51
  52 #[actix_web::main]
  53 async fn main() -> Result<(), LemmyError> {
  54   let args: Vec<String> = env::args().collect();
  55   if args.len() == 2 && args[1] == "--print-config-docs" {
  56     let fmt = Formatting {
  57       auto_comments: AutoComments::none(),
  58       comments_style: CommentsStyle {
  59         separator: "#".to_owned(),
  60       },
  61       objects_style: ObjectsStyle {
  62         surround_keys_with_quotes: false,
  63         use_comma_as_separator: false,
  64       },
  65       ..Default::default()
  66     };
  67     println!("{}", doku::to_json_fmt_val(&fmt, &Settings::default()));
  68     return Ok(());
  69   }
  70
  71   let settings = SETTINGS.to_owned();
  72
  73   init_logging(&settings.opentelemetry_url)?;
  74
  75   // Set up the bb8 connection pool
  76   let db_url = get_database_url(Some(&settings));
  77   run_migrations(&db_url);
  78
  79   // Run the migrations from code
  80   let pool = build_db_pool(&settings).await?;
  81   run_advanced_migrations(&pool, &settings).await?;
  82
  83   // Schedules various cleanup tasks for the DB
  84   thread::spawn(move || {
  85     scheduled_tasks::setup(db_url).expect("Couldn't set up scheduled_tasks");
  86   });
  87
  88   // Initialize the secrets
  89   let secret = Secret::init(&pool)
  90     .await
  91     .expect("Couldn't initialize secrets.");
  92
  93   // Make sure the local site is set up.
  94   let site_view = SiteView::read_local(&pool)
  95     .await
  96     .expect("local site not set up");
  97   let local_site = site_view.local_site;
  98   let federation_enabled = local_site.federation_enabled;
  99
 100   if federation_enabled {
 101     println!("federation enabled, host is {}", &settings.hostname);
 102   }
 103
 104   check_private_instance_and_federation_enabled(&local_site)?;
 105
 106   // Set up the rate limiter
 107   let rate_limit_config =
 108     local_site_rate_limit_to_rate_limit_config(&site_view.local_site_rate_limit);
 109   let rate_limit_cell = RateLimitCell::new(rate_limit_config).await;
 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     |c, i, o, d| Box::pin(match_websocket_operation(c, i, o, d)),
 141     |c, i, o, d| Box::pin(match_websocket_operation_crud(c, i, o, d)),
 142     |c, i, o, d| Box::pin(match_websocket_operation_apub(c, i, o, d)),
 143     client.clone(),
 144     settings.clone(),
 145     secret.clone(),
 146     rate_limit_cell.clone(),
 147   )
 148   .start();
 149
 150   // Create Http server with websocket support
 151   let settings_bind = settings.clone();
 152   HttpServer::new(move || {
 153     let context = LemmyContext::create(
 154       pool.clone(),
 155       chat_server.clone(),
 156       client.clone(),
 157       settings.clone(),
 158       secret.clone(),
 159       rate_limit_cell.clone(),
 160     );
 161     App::new()
 162       .wrap(middleware::Logger::default())
 163       .wrap(TracingLogger::<QuieterRootSpanBuilder>::new())
 164       .app_data(Data::new(context))
 165       .app_data(Data::new(rate_limit_cell.clone()))
 166       // The routes
 167       .configure(|cfg| api_routes::config(cfg, rate_limit_cell))
 168       .configure(|cfg| {
 169         if federation_enabled {
 170           lemmy_apub::http::routes::config(cfg);
 171           webfinger::config(cfg);
 172         }
 173       })
 174       .configure(feeds::config)
 175       .configure(|cfg| images::config(cfg, pictrs_client.clone(), rate_limit_cell))
 176       .configure(nodeinfo::config)
 177   })
 178   .bind((settings_bind.bind, settings_bind.port))?
 179   .run()
 180   .await?;
 181
 182   Ok(())
 183 }