Merge pull request #23368 from overleaf/bg-add-index-for-pending-change-at

add migration for creating index on overleaf.backup.pendingChangeAt

GitOrigin-RevId: b15f1b95d8dbbb08cd2ae4863a0501663130ab65

services/web/migrations/20250203164153_create_project_pendingChangeAt_index.mjs

@@ -0,0 +1,31 @@
+/* eslint-disable no-unused-vars */
+
+import Helpers from './lib/helpers.mjs'
+
+const tags = ['saas']
+
+const indexes = [
+  {
+    key: { 'overleaf.backup.pendingChangeAt': 1 },
+    name: 'overleaf_backup_pendingChangeAt_1',
+    partialFilterExpression: {
+      'overleaf.backup.pendingChangeAt': { $exists: true },
+    },
+  },
+]
+
+const migrate = async client => {
+  const { db } = client
+  await Helpers.addIndexesToCollection(db.projects, indexes)
+}
+
+const rollback = async client => {
+  const { db } = client
+  await Helpers.dropIndexesFromCollection(db.projects, indexes)
+}
+
+export default {
+  tags,
+  migrate,
+  rollback,
+}