jmxtrans is very powerful tool which uses easily generated JSON (or YAML) based configuration files and then outputs the data in whatever format you desire. It does this with a very efficient engine design that will scale to communicating with thousands of machines from a single jmxtrans instance.
$ wget https://github.com/jmxtrans/jmxtrans/raw/master/jmxtrans/tools/yaml2jmxtrans.py
$ chmod +x yaml2jmxtrans.py
$ ./yaml2jmxtrans.py config.yaml