How to view Opendaylight topology on external webgui

I'm exploring ODL and mininet and able to run both and populate the network nodes over ODL and I can view the topology via ODL default webgui.

I'm planning to create my own webgui and to start with simple topology view. I need advise and guideline on how I can achieve topology view on my own webgui. Plan to use python and html. Just a simple single page html and python script. Hopefully someone could lead me the way. Please assist and thank you.