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::{
   7   r2d2::{ConnectionManager, Pool},
   8   PgConnection,
   9 };
  10 use doku::json::{AutoComments, Formatting};
  11 use lemmy_api::match_websocket_operation;
  12 use lemmy_api_common::{
  13   request::build_user_agent,
  14   utils::{blocking, check_private_instance_and_federation_enabled},
  15 };
  16 use lemmy_api_crud::match_websocket_operation_crud;
  17 use lemmy_db_schema::{source::secret::Secret, utils::get_database_url_from_env};
  18 use lemmy_routes::{feeds, images, nodeinfo, webfinger};
  19 use lemmy_server::{
  20   api_routes,
  21   code_migrations::run_advanced_migrations,
  22   init_logging,
  23   root_span_builder::QuieterRootSpanBuilder,
  24   scheduled_tasks,
  25 };
  26 use lemmy_utils::{
  27   error::LemmyError,
  28   rate_limit::{rate_limiter::RateLimiter, RateLimit},
  29   settings::{structs::Settings, SETTINGS},
  30 };
  31 use lemmy_websocket::{chat_server::ChatServer, LemmyContext};
  32 use reqwest::Client;
  33 use reqwest_middleware::ClientBuilder;
  34 use reqwest_retry::{policies::ExponentialBackoff, RetryTransientMiddleware};
  35 use reqwest_tracing::TracingMiddleware;
  36 use std::{
  37   env,
  38   sync::{Arc, Mutex},
  39   thread,
  40   time::Duration,
  41 };
  42 use tracing_actix_web::TracingLogger;
  43
  44 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       ..Default::default()
  56     };
  57     println!("{}", doku::to_json_fmt_val(&fmt, &Settings::default()));
  58     return Ok(());
  59   }
  60
  61   let settings = SETTINGS.to_owned();
  62
  63   init_logging(&settings.opentelemetry_url)?;
  64
  65   // Set up the r2d2 connection pool
  66   let db_url = match get_database_url_from_env() {
  67     Ok(url) => url,
  68     Err(_) => settings.get_database_url(),
  69   };
  70   let manager = ConnectionManager::<PgConnection>::new(&db_url);
  71   let pool = Pool::builder()
  72     .max_size(settings.database.pool_size)
  73     .min_idle(Some(1))
  74     .build(manager)
  75     .unwrap_or_else(|_| panic!("Error connecting to {}", db_url));
  76
  77   // Run the migrations from code
  78   let protocol_and_hostname = settings.get_protocol_and_hostname();
  79   blocking(&pool, move |conn| {
  80     embedded_migrations::run(conn)?;
  81     run_advanced_migrations(conn, &protocol_and_hostname)?;
  82     Ok(()) as Result<(), LemmyError>
  83   })
  84   .await??;
  85
  86   // Schedules various cleanup tasks for the DB
  87   let pool2 = pool.clone();
  88   thread::spawn(move || {
  89     scheduled_tasks::setup(pool2).expect("Couldn't set up scheduled_tasks");
  90   });
  91
  92   // Set up the rate limiter
  93   let rate_limiter = RateLimit {
  94     rate_limiter: Arc::new(Mutex::new(RateLimiter::default())),
  95     rate_limit_config: settings.rate_limit.to_owned().unwrap_or_default(),
  96   };
  97
  98   // Initialize the secrets
  99   let conn = pool.get()?;
 100   let secret = Secret::init(&conn).expect("Couldn't initialize secrets.");
 101
 102   println!(
 103     "Starting http server at {}:{}",
 104     settings.bind, settings.port
 105   );
 106
 107   let reqwest_client = Client::builder()
 108     .user_agent(build_user_agent(&settings))
 109     .timeout(REQWEST_TIMEOUT)
 110     .build()?;
 111
 112   let retry_policy = ExponentialBackoff {
 113     max_n_retries: 3,
 114     max_retry_interval: REQWEST_TIMEOUT,
 115     min_retry_interval: Duration::from_millis(100),
 116     backoff_exponent: 2,
 117   };
 118
 119   let client = ClientBuilder::new(reqwest_client.clone())
 120     .with(TracingMiddleware)
 121     .with(RetryTransientMiddleware::new_with_policy(retry_policy))
 122     .build();
 123
 124   // Pictrs cannot use the retry middleware
 125   let pictrs_client = ClientBuilder::new(reqwest_client.clone())
 126     .with(TracingMiddleware)
 127     .build();
 128
 129   check_private_instance_and_federation_enabled(&pool, &settings).await?;
 130
 131   let chat_server = ChatServer::startup(
 132     pool.clone(),
 133     rate_limiter.clone(),
 134     |c, i, o, d| Box::pin(match_websocket_operation(c, i, o, d)),
 135     |c, i, o, d| Box::pin(match_websocket_operation_crud(c, i, o, d)),
 136     client.clone(),
 137     settings.clone(),
 138     secret.clone(),
 139   )
 140   .start();
 141
 142   // Create Http server with websocket support
 143   let settings_bind = settings.clone();
 144   HttpServer::new(move || {
 145     let context = LemmyContext::create(
 146       pool.clone(),
 147       chat_server.to_owned(),
 148       client.clone(),
 149       settings.to_owned(),
 150       secret.to_owned(),
 151     );
 152     let rate_limiter = rate_limiter.clone();
 153     App::new()
 154       .wrap(actix_web::middleware::Logger::default())
 155       .wrap(TracingLogger::<QuieterRootSpanBuilder>::new())
 156       .app_data(Data::new(context))
 157       .app_data(Data::new(rate_limiter.clone()))
 158       // The routes
 159       .configure(|cfg| api_routes::config(cfg, &rate_limiter))
 160       .configure(|cfg| lemmy_apub::http::routes::config(cfg, &settings))
 161       .configure(feeds::config)
 162       .configure(|cfg| images::config(cfg, pictrs_client.clone(), &rate_limiter))
 163       .configure(nodeinfo::config)
 164       .configure(|cfg| webfinger::config(cfg, &settings))
 165   })
 166   .bind((settings_bind.bind, settings_bind.port))?
 167   .run()
 168   .await?;
 169
 170   Ok(())
 171 }