How to make Gangila graphs work with flume

[Himanshu Patidar]

Hi, 
I have a multi agent flume flow running.
I was interested in monitoring the channels, so I enabled the JSON reporting. 
Now I want to view these metrics in Graphs.
Can anyone help me with this?
This is a sample screenshot of the graphs I picked up somewhere from the web. I 
am interested in viewing the metrices in the same way.  
Thanks,Himanshu