From 92e42701eeb9d1891bb6b9c82a5bf20cb605afbf Mon Sep 17 00:00:00 2001
From: Coroliov Oleg <1880059+ruscon@users.noreply.github.com>
Date: Thu, 5 Sep 2019 15:25:06 +0300
Subject: [PATCH] feat: add mongodb `useUnifiedTopology` config parameter
 (#4684)

---
 ormconfig.circleci.json                      | 3 ++-
 ormconfig.json.dist                          | 3 ++-
 ormconfig.travis.json                        | 3 ++-
 src/driver/mongodb/MongoConnectionOptions.ts | 6 ++++++
 src/driver/mongodb/MongoDriver.ts            | 3 ++-
 5 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/ormconfig.circleci.json b/ormconfig.circleci.json
index f56a69db61..d52b7b1d13 100644
--- a/ormconfig.circleci.json
+++ b/ormconfig.circleci.json
@@ -75,6 +75,7 @@
     "name": "mongodb",
     "type": "mongodb",
     "database": "test",
-    "useNewUrlParser": true
+    "useNewUrlParser": true,
+    "useUnifiedTopology": true
   }
 ]
diff --git a/ormconfig.json.dist b/ormconfig.json.dist
index 1365721d32..db4e2321bb 100644
--- a/ormconfig.json.dist
+++ b/ormconfig.json.dist
@@ -77,6 +77,7 @@
     "type": "mongodb",
     "database": "test",
     "logging": false,
-    "useNewUrlParser": true
+    "useNewUrlParser": true,
+    "useUnifiedTopology": true
   }
 ]
diff --git a/ormconfig.travis.json b/ormconfig.travis.json
index bb61533d70..fb1a1d47eb 100644
--- a/ormconfig.travis.json
+++ b/ormconfig.travis.json
@@ -76,6 +76,7 @@
     "name": "mongodb",
     "type": "mongodb",
     "database": "test",
-    "useNewUrlParser": true
+    "useNewUrlParser": true,
+    "useUnifiedTopology": true
   }
 ]
diff --git a/src/driver/mongodb/MongoConnectionOptions.ts b/src/driver/mongodb/MongoConnectionOptions.ts
index f8fe8e426e..845f3f718c 100644
--- a/src/driver/mongodb/MongoConnectionOptions.ts
+++ b/src/driver/mongodb/MongoConnectionOptions.ts
@@ -321,4 +321,10 @@ export interface MongoConnectionOptions extends BaseConnectionOptions {
      * Determines whether or not to use the new url parser. Default: false
      */
     readonly useNewUrlParser?: boolean;
+
+    /**
+     * Determines whether or not to use the new Server Discovery and Monitoring engine. Default: false
+     * https://github.com/mongodb/node-mongodb-native/releases/tag/v3.2.1
+     */
+    readonly useUnifiedTopology?: boolean;
 }
diff --git a/src/driver/mongodb/MongoDriver.ts b/src/driver/mongodb/MongoDriver.ts
index beb067380a..1de0187f2a 100644
--- a/src/driver/mongodb/MongoDriver.ts
+++ b/src/driver/mongodb/MongoDriver.ts
@@ -192,7 +192,8 @@ export class MongoDriver implements Driver {
         "auto_reconnect",
         "minSize",
         "monitorCommands",
-        "useNewUrlParser"
+        "useNewUrlParser",
+        "useUnifiedTopology"
     ];
 
     // -------------------------------------------------------------------------