[oslo] How to use library "oslo.messaging"

Dear all, I have a question about "library oslo.messaging". How can i use this librabry to write simple program listen event on Openstack (like Nova, Cinder)? I had read on docs, nova support "oslo_messaging_notifications" to send message via RabbitMQ, so I’m try to use this library but it seem very hard for me. *Nguyễn Bá Thành* *Mobile*: 0128 748 0391 *Email*: bathanhtlu@gmail.com