Yuyu have two components for running bellow :
1. Yuyu Server
Yuyu server provide ability to manage openstack billing by listening to every openstack event. Yuyu server is a required component to use Yuyu Dashboard. There are 3 main component in Yuyu server: API, Cron, Event Monitor. More detail about Yuyu server at https://github.com/btechpt/yuyu
Yuyu API : Main component to communicate with Yuyu Dashboard.
Yuyu Cron : Provide invoice calculation and rolling capabilities that needed to run every month.
Yuyu Event Monitor : Monitor event from openstack to calculate billing spent.
2. Yuyu Dashboard
Yuyu dashboard is a panel at openstack dashboard that is used to manage your openstack bills. More detail about Yuyu server at https://github.com/btechpt/yuyu_dashboard