From 66d29940c37de8c6ed18146ac943eb14b63004db Mon Sep 17 00:00:00 2001
From: Eric Mc Sween <5454374+emcsween@users.noreply.github.com>
Date: Tue, 2 May 2023 11:52:05 -0400
Subject: [PATCH] Merge pull request #12861 from
 overleaf/em-ds-delete-chunk-migration

Better indexes for history chunks deletion

GitOrigin-RevId: 1404f5a0535bc94cb1e9d7fc2ea66fd90f584fea
---
 ...history_chunks_garbage_collection_index.js | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 services/web/migrations/20230428154643_history_chunks_garbage_collection_index.js

diff --git a/services/web/migrations/20230428154643_history_chunks_garbage_collection_index.js b/services/web/migrations/20230428154643_history_chunks_garbage_collection_index.js
new file mode 100644
index 0000000000..aaf9b7a015
--- /dev/null
+++ b/services/web/migrations/20230428154643_history_chunks_garbage_collection_index.js
@@ -0,0 +1,58 @@
+/* eslint-disable no-unused-vars */
+
+const Helpers = require('./lib/helpers')
+
+exports.tags = ['server-ce', 'server-pro', 'saas']
+
+const oldIndexes = [
+  {
+    key: {
+      state: 1,
+    },
+    name: 'state_1',
+    partialFilterExpression: {
+      state: 'deleted',
+    },
+  },
+  {
+    key: {
+      state: -1,
+    },
+    name: 'state_pending',
+    partialFilterExpression: {
+      state: 'pending',
+    },
+  },
+]
+const newIndexes = [
+  {
+    key: {
+      updatedAt: 1,
+    },
+    name: 'deleted_updated_at',
+    partialFilterExpression: {
+      state: 'deleted',
+    },
+  },
+  {
+    key: {
+      updatedAt: -1,
+    },
+    name: 'pending_updated_at',
+    partialFilterExpression: {
+      state: 'pending',
+    },
+  },
+]
+
+exports.migrate = async client => {
+  const { db } = client
+  await Helpers.addIndexesToCollection(db.projectHistoryChunks, newIndexes)
+  await Helpers.dropIndexesFromCollection(db.projectHistoryChunks, oldIndexes)
+}
+
+exports.rollback = async client => {
+  const { db } = client
+  await Helpers.addIndexesToCollection(db.projectHistoryChunks, oldIndexes)
+  await Helpers.dropIndexesFromCollection(db.projectHistoryChunks, newIndexes)
+}