Files
web/src/mb_update.rs
2026-03-21 23:22:49 -04:00

121 lines
4.4 KiB
Rust

//! Background task that periodically re-imports the MusicBrainz database.
use std::time::Duration;
use actix_web::web;
use crate::state::AppState;
/// Spawn the weekly MB database update loop.
///
/// Only runs if a local MB database exists (meaning the user has done an initial import).
/// Downloads fresh dumps and re-imports weekly.
pub fn spawn(state: web::Data<AppState>) {
tokio::spawn(async move {
// Wait 1 hour after startup before first check
tokio::time::sleep(Duration::from_secs(3600)).await;
loop {
// Check if local DB exists and auto-update is desired
let has_local = state.mb_client.has_local_db();
if !has_local {
// No local DB — sleep a day and check again
tokio::time::sleep(Duration::from_secs(86400)).await;
continue;
}
// Check how old the import is
let needs_update = state
.mb_client
.local_stats()
.and_then(|s| s.last_import_date)
.map(|date| {
// Parse the date and check if it's older than 7 days
chrono::NaiveDate::parse_from_str(&date, "%Y-%m-%d")
.map(|d| {
let age = chrono::Utc::now().naive_utc().date() - d;
age.num_days() >= 7
})
.unwrap_or(true) // If we can't parse the date, update
})
.unwrap_or(false); // No stats = no local DB = skip
if !needs_update {
// Check again in 24 hours
tokio::time::sleep(Duration::from_secs(86400)).await;
continue;
}
tracing::info!("starting weekly MusicBrainz database update");
let data_dir = shanty_config::data_dir().join("mb-dumps");
let db_path = state
.config
.read()
.await
.musicbrainz
.local_db_path
.clone()
.unwrap_or_else(|| shanty_config::data_dir().join("shanty-mb.db"));
// Download fresh dumps
if let Err(e) = std::fs::create_dir_all(&data_dir) {
tracing::error!(error = %e, "failed to create dump dir for MB update");
tokio::time::sleep(Duration::from_secs(86400)).await;
continue;
}
let timestamp = match shanty_data::mb_import::discover_latest_dump_folder().await {
Ok(t) => t,
Err(e) => {
tracing::error!(error = %e, "failed to discover latest MB dump");
tokio::time::sleep(Duration::from_secs(86400)).await;
continue;
}
};
let mut download_failed = false;
for filename in shanty_data::mb_import::DUMP_FILES {
if let Err(e) =
shanty_data::mb_import::download_dump(filename, &timestamp, &data_dir, |msg| {
tracing::info!("{msg}");
})
.await
{
tracing::error!(file = filename, error = %e, "MB dump download failed");
download_failed = true;
break;
}
}
if download_failed {
tokio::time::sleep(Duration::from_secs(86400)).await;
continue;
}
// Run import in blocking task
let result = tokio::task::spawn_blocking(move || {
shanty_data::mb_import::run_import_at_path(&db_path, &data_dir, |msg| {
tracing::info!("{msg}");
})
})
.await;
match result {
Ok(Ok(stats)) => {
tracing::info!(%stats, "weekly MusicBrainz update complete");
}
Ok(Err(e)) => {
tracing::error!(error = %e, "weekly MusicBrainz import failed");
}
Err(e) => {
tracing::error!(error = %e, "weekly MusicBrainz import task panicked");
}
}
// Sleep 7 days before next check
tokio::time::sleep(Duration::from_secs(7 * 86400)).await;
}
});
}