From 86b763e3beeb1650a2ee2e4d7609060120102194 Mon Sep 17 00:00:00 2001
From: Jakob Ackermann <jakob.ackermann@overleaf.com>
Date: Wed, 28 Feb 2024 10:19:03 +0000
Subject: [PATCH] Merge pull request #17327 from
 overleaf/em-mongo-version-startup-check

Check Mongo version when starting CE/Server Pro

GitOrigin-RevId: bd7d28422063f566a4afdc9de970e7f3d0b74ef6
---
 .../scripts/check-mongodb.js                  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/services/web/modules/server-ce-scripts/scripts/check-mongodb.js b/services/web/modules/server-ce-scripts/scripts/check-mongodb.js
index 112e66e8a2..5b8fda183d 100644
--- a/services/web/modules/server-ce-scripts/scripts/check-mongodb.js
+++ b/services/web/modules/server-ce-scripts/scripts/check-mongodb.js
@@ -2,6 +2,8 @@ const { ObjectId } = require('mongodb')
 const { waitForDb, db } = require('../../../app/src/infrastructure/mongodb')
 const { getMongoClient } = require('../../../app/src/infrastructure/Mongoose')
 
+const MIN_MONGO_VERSION = [5, 0]
+
 async function main() {
   try {
     await waitForDb()
@@ -9,6 +11,9 @@ async function main() {
     console.error('Cannot connect to mongodb')
     throw err
   }
+
+  await checkMongoVersion()
+
   try {
     await testTransactions()
   } catch (err) {
@@ -29,6 +34,22 @@ async function testTransactions() {
   }
 }
 
+async function checkMongoVersion() {
+  const mongoClient = await getMongoClient()
+  const buildInfo = await mongoClient.db().admin().buildInfo()
+  const [major, minor] = buildInfo.versionArray
+  const [minMajor, minMinor] = MIN_MONGO_VERSION
+
+  if (major < minMajor || (major === minMajor && minor < minMinor)) {
+    const version = buildInfo.version
+    const minVersion = MIN_MONGO_VERSION.join('.')
+    console.error(
+      `The MongoDB server has version ${version}, but Overleaf requires at least version ${minVersion}. Aborting.`
+    )
+    process.exit(1)
+  }
+}
+
 main()
   .then(() => {
     console.error('Mongodb is up.')