java - how to check from a driver, if mongoDB server is running

Question

I wonder, if there is a way to check if mongoDB server is running from java driver for mongoDB?

According to the tutorial, I can do

Mongo m = new Mongo();
// or
Mongo m = new Mongo( "localhost" , 27017 );
// and
DB db = m.getDB( "mydb" );

But how to check that I can use these Mongo and DB? I see no isConnected() method in the API.

db.getConnector().isOpen() 

returns true

The only way I found is call db.getDatabaseNames() and catch MongoException.

If there some more civilized approach?

Answer 1

You can run a ping command

 Mongo mongo = new Mongo();
 DBObject ping = new BasicDBObject("ping", "1");
 try {
       mongo.getDB("dbname").command(ping);
 } catch (MongoException e) {
       ...
 }