feat(backup): scheduled snapshot worker wired into server lifecycle

2026-06-20 02:32:17 +02:00
parent 154feb2dd6
commit 9407e48293
3 changed files with 71 additions and 0 deletions
@@ -0,0 +1,33 @@
+import { config } from '../config.js';
+import { getRawDb } from '../db/index.js';
+import { createSnapshot, pruneSnapshots } from './backup.js';
+
+let timer: ReturnType<typeof setInterval> | null = null;
+
+export function startBackupWorker(): void {
+  if (config.backup.disabled) {
+    console.log('[backup] scheduled worker disabled via BACKUP_DISABLED');
+    return;
+  }
+  if (timer) return;
+  const intervalMs = config.backup.intervalHours * 60 * 60 * 1000;
+  timer = setInterval(() => {
+    try {
+      const snap = createSnapshot(getRawDb(), 'scheduled');
+      pruneSnapshots();
+      console.log(`[backup] scheduled snapshot written: ${snap}`);
+    } catch (err) {
+      console.error(`[backup] scheduled snapshot failed: ${(err as Error).message}`);
+    }
+  }, intervalMs);
+  // Do not keep the event loop alive solely for backups.
+  if (typeof timer.unref === 'function') timer.unref();
+  console.log(`[backup] scheduled worker started (every ${config.backup.intervalHours}h)`);
+}
+
+export function stopBackupWorker(): void {
+  if (timer) {
+    clearInterval(timer);
+    timer = null;
+  }
+}