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use tokio::task::JoinHandle; |
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use tracing::{info, warn}; |
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use pom::alerts::Alerter; |
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use pom::checks::systemd; |
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use pom::config::Config; |
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use pom::db; |
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use super::{CheckInterval, configured_targets}; |
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pub(crate) fn spawn_systemd_tasks( |
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config: &Config, |
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pool: &sqlx::SqlitePool, |
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cancel: &tokio_util::sync::CancellationToken, |
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alerter: Option<&Alerter>, |
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) -> Vec<JoinHandle<()>> { |
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let mut handles = Vec::new(); |
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for (name, target_config) in configured_targets(config) { |
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let Some(sd_config) = target_config.systemd else { |
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continue; |
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}; |
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let name = name.clone(); |
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let label = target_config.label.clone(); |
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let alerter = alerter.cloned(); |
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let pool = pool.clone(); |
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let cancel = cancel.clone(); |
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info!( |
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"{name}: systemd check every {}s ({} units, failed-sweep={})", |
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sd_config.interval_secs, |
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sd_config.units.len(), |
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sd_config.check_failed, |
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); |
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handles.push(tokio::spawn(async move { |
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let mut ticks = CheckInterval::new(sd_config.interval_secs, cancel); |
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let mut previous_status: Option<String> = |
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db::get_latest_alert_matching(&pool, &format!("systemd:{name}"), "systemd_%") |
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.await |
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.ok() |
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.flatten() |
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.filter(|a| a.alert_type == "systemd_failure") |
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.and_then(|a| a.to_status); |
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while ticks.next().await { |
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let result = systemd::check_systemd( |
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&name, |
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&sd_config.units, |
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sd_config.check_failed, |
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sd_config.restart_threshold, |
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) |
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.await; |
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if result.issues.is_empty() && result.error.is_none() { |
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info!( |
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"{name}: daemons operational ({} units watched)", |
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result.units.len() |
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); |
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} else { |
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warn!( |
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target = %name, |
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status = %result.status, |
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issues = ?result.issues, |
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"daemons non-operational" |
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); |
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} |
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if let Err(e) = db::insert_systemd_check(&pool, &result).await { |
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tracing::error!("{name}: failed to store systemd check: {e}"); |
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} |
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if let Some(ref alerter) = alerter { |
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let prev_ok = previous_status |
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.as_deref() |
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.is_none_or(|s| s == "operational"); |
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let now_ok = result.status == "operational"; |
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if prev_ok && !now_ok { |
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alerter |
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.send_systemd_alert(&name, &label, &result.status, &result.issues) |
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.await; |
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} else if !prev_ok && now_ok { |
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alerter.send_systemd_recovery(&name, &label).await; |
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} |
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} |
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previous_status = Some(result.status); |
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} |
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})); |
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} |
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handles |
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} |
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