use clokwerk::{Scheduler, TimeUnits as CTimeUnits}; use diesel::{ dsl::{now, IntervalDsl}, Connection, ExpressionMethods, QueryDsl, }; // Import week days and WeekDay use diesel::{sql_query, PgConnection, RunQueryDsl}; use lemmy_db_schema::{ schema::{ activity, comment_aggregates, community_aggregates, community_person_ban, instance, person, post_aggregates, }, source::instance::{Instance, InstanceForm}, utils::{functions::hot_rank, naive_now}, }; use lemmy_routes::nodeinfo::NodeInfo; use lemmy_utils::{error::LemmyError, REQWEST_TIMEOUT}; use reqwest::blocking::Client; use std::{thread, time::Duration}; use tracing::{error, info}; /// Schedules various cleanup tasks for lemmy in a background thread pub fn setup(db_url: String, user_agent: String) -> Result<(), LemmyError> { // Setup the connections let mut scheduler = Scheduler::new(); let mut conn_1 = PgConnection::establish(&db_url).expect("could not establish connection"); let mut conn_2 = PgConnection::establish(&db_url).expect("could not establish connection"); let mut conn_3 = PgConnection::establish(&db_url).expect("could not establish connection"); let mut conn_4 = PgConnection::establish(&db_url).expect("could not establish connection"); // Run on startup active_counts(&mut conn_1); update_hot_ranks(&mut conn_1, false); update_banned_when_expired(&mut conn_1); clear_old_activities(&mut conn_1); // Update active counts every hour scheduler.every(CTimeUnits::hour(1)).run(move || { active_counts(&mut conn_1); update_banned_when_expired(&mut conn_1); }); // Update hot ranks every 5 minutes scheduler.every(CTimeUnits::minutes(5)).run(move || { update_hot_ranks(&mut conn_2, true); }); // Clear old activities every week scheduler.every(CTimeUnits::weeks(1)).run(move || { clear_old_activities(&mut conn_3); }); scheduler.every(CTimeUnits::days(1)).run(move || { update_instance_software(&mut conn_4, &user_agent); }); // Manually run the scheduler in an event loop loop { scheduler.run_pending(); thread::sleep(Duration::from_millis(1000)); } } /// Update the hot_rank columns for the aggregates tables fn update_hot_ranks(conn: &mut PgConnection, last_week_only: bool) { let mut post_update = diesel::update(post_aggregates::table).into_boxed(); let mut comment_update = diesel::update(comment_aggregates::table).into_boxed(); let mut community_update = diesel::update(community_aggregates::table).into_boxed(); // Only update for the last week of content if last_week_only { info!("Updating hot ranks for last week..."); let last_week = now - diesel::dsl::IntervalDsl::weeks(1); post_update = post_update.filter(post_aggregates::published.gt(last_week)); comment_update = comment_update.filter(comment_aggregates::published.gt(last_week)); community_update = community_update.filter(community_aggregates::published.gt(last_week)); } else { info!("Updating hot ranks for all history..."); } match post_update .set(( post_aggregates::hot_rank.eq(hot_rank(post_aggregates::score, post_aggregates::published)), post_aggregates::hot_rank_active.eq(hot_rank( post_aggregates::score, post_aggregates::newest_comment_time_necro, )), )) .execute(conn) { Ok(_) => {} Err(e) => { error!("Failed to update post_aggregates hot_ranks: {}", e) } } match comment_update .set(comment_aggregates::hot_rank.eq(hot_rank( comment_aggregates::score, comment_aggregates::published, ))) .execute(conn) { Ok(_) => {} Err(e) => { error!("Failed to update comment_aggregates hot_ranks: {}", e) } } match community_update .set(community_aggregates::hot_rank.eq(hot_rank( community_aggregates::subscribers, community_aggregates::published, ))) .execute(conn) { Ok(_) => { info!("Done."); } Err(e) => { error!("Failed to update community_aggregates hot_ranks: {}", e) } } } /// Clear old activities (this table gets very large) fn clear_old_activities(conn: &mut PgConnection) { info!("Clearing old activities..."); match diesel::delete(activity::table.filter(activity::published.lt(now - 6.months()))) .execute(conn) { Ok(_) => { info!("Done."); } Err(e) => { error!("Failed to clear old activities: {}", e) } } } /// Re-calculate the site and community active counts every 12 hours fn active_counts(conn: &mut PgConnection) { info!("Updating active site and community aggregates ..."); let intervals = vec![ ("1 day", "day"), ("1 week", "week"), ("1 month", "month"), ("6 months", "half_year"), ]; for i in &intervals { let update_site_stmt = format!( "update site_aggregates set users_active_{} = (select * from site_aggregates_activity('{}'))", i.1, i.0 ); match sql_query(update_site_stmt).execute(conn) { Ok(_) => {} Err(e) => { error!("Failed to update site stats: {}", e) } } let update_community_stmt = format!("update community_aggregates ca set users_active_{} = mv.count_ from community_aggregates_activity('{}') mv where ca.community_id = mv.community_id_", i.1, i.0); match sql_query(update_community_stmt).execute(conn) { Ok(_) => {} Err(e) => { error!("Failed to update community stats: {}", e) } } } info!("Done."); } /// Set banned to false after ban expires fn update_banned_when_expired(conn: &mut PgConnection) { info!("Updating banned column if it expires ..."); match diesel::update( person::table .filter(person::banned.eq(true)) .filter(person::ban_expires.lt(now)), ) .set(person::banned.eq(false)) .execute(conn) { Ok(_) => {} Err(e) => { error!("Failed to update person.banned when expires: {}", e) } } match diesel::delete(community_person_ban::table.filter(community_person_ban::expires.lt(now))) .execute(conn) { Ok(_) => {} Err(e) => { error!("Failed to remove community_ban expired rows: {}", e) } } } /// Updates the instance software and version fn update_instance_software(conn: &mut PgConnection, user_agent: &str) { info!("Updating instances software and versions..."); let client = match Client::builder() .user_agent(user_agent) .timeout(REQWEST_TIMEOUT) .build() { Ok(client) => client, Err(e) => { error!("Failed to build reqwest client: {}", e); return; } }; let instances = match instance::table.get_results::(conn) { Ok(instances) => instances, Err(e) => { error!("Failed to get instances: {}", e); return; } }; for instance in instances { let node_info_url = format!("https://{}/nodeinfo/2.0.json", instance.domain); // Skip it if it can't connect let res = client .get(&node_info_url) .send() .ok() .and_then(|t| t.json::().ok()); if let Some(node_info) = res { let software = node_info.software.as_ref(); let form = InstanceForm::builder() .domain(instance.domain) .software(software.and_then(|s| s.name.clone())) .version(software.and_then(|s| s.version.clone())) .updated(Some(naive_now())) .build(); match diesel::update(instance::table.find(instance.id)) .set(form) .execute(conn) { Ok(_) => { info!("Done."); } Err(e) => { error!("Failed to update site instance software: {}", e); return; } } } } } #[cfg(test)] mod tests { use lemmy_routes::nodeinfo::NodeInfo; use reqwest::Client; #[tokio::test] #[ignore] async fn test_nodeinfo() { let client = Client::builder().build().unwrap(); let lemmy_ml_nodeinfo = client .get("https://lemmy.ml/nodeinfo/2.0.json") .send() .await .unwrap() .json::() .await .unwrap(); assert_eq!(lemmy_ml_nodeinfo.software.unwrap().name.unwrap(), "lemmy"); } }