Pause, cancel & resume backup media download

ts/sql/migrations/1200-attachment-download-source-index.ts

@@ -0,0 +1,29 @@
+// Copyright 2024 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+import type { Database } from '@signalapp/better-sqlite3';
+import type { LoggerType } from '../../types/Logging';
+
+export const version = 1200;
+export function updateToSchemaVersion1200(
+  currentVersion: number,
+  db: Database,
+  logger: LoggerType
+): void {
+  if (currentVersion >= 1200) {
+    return;
+  }
+
+  db.transaction(() => {
+    // The standard getNextAttachmentDownloadJobs query uses active & source conditions,
+    // ordered by received_at
+    db.exec(`      
+        CREATE INDEX attachment_downloads_active_source_receivedAt
+            ON attachment_downloads (
+                active, source, receivedAt
+            );
+    `);
+
+    db.pragma('user_version = 1200');
+  })();
+  logger.info('updateToSchemaVersion1200: success!');
+}