From cd10b3dc3edc06edc10a92705f36cd0affff38f8 Mon Sep 17 00:00:00 2001
From: Andrew Molchanov <mr.catmanrus@gmail.com>
Date: Thu, 3 Dec 2020 21:05:09 +0300
Subject: [PATCH] fixed deprecation warnings

---
 lib/document_stores/mongodb.js | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/lib/document_stores/mongodb.js b/lib/document_stores/mongodb.js
index e700212..250dbe3 100644
--- a/lib/document_stores/mongodb.js
+++ b/lib/document_stores/mongodb.js
@@ -15,16 +15,18 @@ MongoDocumentStore.prototype.set = function (key, data, callback, skipExpire) {
         if (err)
             return callback(false);
 
-        db.collection('entries').update({
+        db.collection('entries').updateOne({
             'entry_id': key,
             $or: [
                 { expiration: -1 },
                 { expiration: { $gt: now } }
             ]
         }, {
-            'entry_id': key,
-            'value': data,
-            'expiration': that.expire && !skipExpire ? that.expire + now : -1
+            $set: {
+                'entry_id': key,
+                'value': data,
+                'expiration': that.expire && !skipExpire ? that.expire + now : -1
+            }
         }, {
             upsert: true
         }, function (err, existing) {
@@ -61,7 +63,7 @@ MongoDocumentStore.prototype.get = function (key, callback, skipExpire) {
             callback(entry === null ? false : entry.value);
 
             if (entry !== null && entry.expiration !== -1 && that.expire && !skipExpire) {
-                db.collection('entries').update({
+                db.collection('entries').updateOne({
                     'entry_id': key
                 }, {
                     $set: {
@@ -74,7 +76,7 @@ MongoDocumentStore.prototype.get = function (key, callback, skipExpire) {
 };
 
 MongoDocumentStore.prototype.safeConnect = function (callback) {
-    MongoClient.connect(this.connectionUrl, function (err, client) {
+    MongoClient.connect(this.connectionUrl, { useUnifiedTopology: true }, function (err, client) {
         if (err) {
             winston.error('error connecting to mongodb', { error: err });
             callback(err);