app.js

function getRuin(data, callback) {
        var con = mysql.createConnection({
          host: cfg.host,
          user: cfg.user,
          password: cfg.password,
          database: cfg.database
        });
        con.connect();
        console.log("3");
        con.query("SELECT ruin FROM ruins ORDER BY RAND() LIMIT 1", function (err, result) {
        console.log("4");
           // if (err) throw err;
           var msg = result[0];
           // console.log(msg.ruin);
           return callback(msg.ruin);
           con.end();
        });
}