Add support for MongoDB URI (#1330)

Implements #1311

src/main/java/world/bentobox/bentobox/Settings.java

@@ -103,6 +103,11 @@ public class Settings implements ConfigObject {
     @ConfigEntry(path = "general.database.prefix-character", since = "1.13.0")
     private String databasePrefix = "";
 
+    @ConfigComment("MongoDB client connection URI to override default connection options.")
+    @ConfigComment("See: https://docs.mongodb.com/manual/reference/connection-string/")
+    @ConfigEntry(path = "general.database.mongodb-connection-uri", since = "1.14.0")
+    private String mongodbConnectionUri = "";
+
     @ConfigComment("Allow FTB Autonomous Activator to work (will allow a pseudo player [CoFH] to place and break blocks and hang items)")
     @ConfigComment("Add other fake player names here if required")
     @ConfigEntry(path = "general.fakeplayers", experimental = true)
@@ -661,4 +666,23 @@ public class Settings implements ConfigObject {
 	public void setKeepPreviousIslandOnReset(boolean keepPreviousIslandOnReset) {
 		this.keepPreviousIslandOnReset = keepPreviousIslandOnReset;
 	}
+
+    /**
+     * Returns a MongoDB client connection URI to override default connection options.
+     *
+     * @return mongodb client connection.
+     * @see <a href="https://docs.mongodb.com/manual/reference/connection-string/">MongoDB Documentation</a>
+     * @since 1.14.0
+     */
+    public String getMongodbConnectionUri() {
+        return mongodbConnectionUri;
+    }
+
+    /**
+     * Set the MongoDB client connection URI.
+     * @param mongodbConnectionUri connection URI.
+     */
+    public void setMongodbConnectionUri(String mongodbConnectionUri) {
+        this.mongodbConnectionUri = mongodbConnectionUri;
+    }
 }

src/main/java/world/bentobox/bentobox/database/mongodb/MongoDBDatabase.java

@@ -32,7 +32,7 @@ public class MongoDBDatabase implements DatabaseSetup {
                     plugin.getSettings().getDatabaseUsername(),
                     plugin.getSettings().getDatabasePassword(),
                     plugin.getSettings().isUseSSL()
-                    ));
+            ), plugin.getSettings().getMongodbConnectionUri());
         }
         return new MongoDBDatabaseHandler<>(plugin, type, connector);
     }

src/main/java/world/bentobox/bentobox/database/mongodb/MongoDBDatabaseConnector.java

@@ -3,13 +3,10 @@ package world.bentobox.bentobox.database.mongodb;
 import java.util.HashSet;
 import java.util.Set;
 
+import com.mongodb.*;
 import org.bukkit.Bukkit;
 import org.eclipse.jdt.annotation.NonNull;
 
-import com.mongodb.MongoClient;
-import com.mongodb.MongoClientOptions;
-import com.mongodb.MongoCredential;
-import com.mongodb.ServerAddress;
 import com.mongodb.client.MongoDatabase;
 
 import world.bentobox.bentobox.database.DatabaseConnectionSettingsImpl;
@@ -18,15 +15,17 @@ import world.bentobox.bentobox.database.DatabaseConnector;
 public class MongoDBDatabaseConnector implements DatabaseConnector {
 
     private MongoClient client;
-    private DatabaseConnectionSettingsImpl dbSettings;
+    private final DatabaseConnectionSettingsImpl dbSettings;
-    private Set<Class<?>> types = new HashSet<>();
+    private final String mongoDbConnectionURI;
+    private final Set<Class<?>> types = new HashSet<>();
 
     /**
      * Class for MySQL database connections using the settings provided
      * @param dbSettings - database settings
      */
-    MongoDBDatabaseConnector(DatabaseConnectionSettingsImpl dbSettings) {
+    MongoDBDatabaseConnector(DatabaseConnectionSettingsImpl dbSettings, String mongoDbConnectionURI) {
         this.dbSettings = dbSettings;
+        this.mongoDbConnectionURI = mongoDbConnectionURI;
     }
 
     @Override
@@ -34,11 +33,16 @@ public class MongoDBDatabaseConnector implements DatabaseConnector {
         types.add(type);
         // Only get one client
         if (client == null) {
-            MongoCredential credential = MongoCredential.createCredential(dbSettings.getUsername(),
+            if(mongoDbConnectionURI == null || mongoDbConnectionURI.isEmpty()){
-                    dbSettings.getDatabaseName(),
+                MongoCredential credential = MongoCredential.createCredential(dbSettings.getUsername(),
-                    dbSettings.getPassword().toCharArray());
+                        dbSettings.getDatabaseName(),
-            MongoClientOptions options = MongoClientOptions.builder().sslEnabled(dbSettings.isUseSSL()).build();
+                        dbSettings.getPassword().toCharArray());
-            client = new MongoClient(new ServerAddress(dbSettings.getHost(), dbSettings.getPort()), credential,options);
+                MongoClientOptions options = MongoClientOptions.builder().sslEnabled(dbSettings.isUseSSL()).build();
+                client = new MongoClient(new ServerAddress(dbSettings.getHost(), dbSettings.getPort()), credential,options);
+            }else {
+                client = new MongoClient(new MongoClientURI(this.mongoDbConnectionURI));
+            }
+
         }
         return client.getDatabase(dbSettings.getDatabaseName());
     }

src/main/resources/config.yml

@@ -54,6 +54,9 @@ general:
     name: bentobox
     username: username
     password: password
+    # MongoDB client connection URI to override default connection options.
+    # See: https://docs.mongodb.com/manual/reference/connection-string/
+    mongodb-connection-uri: ''
     # How often the data will be saved to file in mins. Default is 5 minutes.
     # This helps prevent issues if the server crashes.
     # Data is also saved at important points in the game.