How do I know the controller routing algorithm?

Hello,

I have created a network simulation using 5 SDN switches with a source and destination nodes. I have connected it to OpenDayLight running on Ubuntu Virtual Machine. I can see the flow tables, I can see all the packets being received by the destination node. But I want to know the (default) routing algorithm being used.

Software used:

Riverbed Modeler 18.8

OpenDayLight Oxygen 0.8.4

Ubuntu running on Virtual Machine

WireShark