Bilean

Overview
The mission for Bilean project is to provide a generic billing service for an OpenStack cloud, it implements trigger-type billing based on other OpenStack services' notification.

Features
The primary features of the Bilean service are listed below:


 * Trigger-type billing: listens on AMQP and do bill when user has resource changes.
 * Seconds-level billing: provides user high-accuracy and real-time balance.
 * Plugin-based object rule management enabling the creation and management for any chargeable resources.
 * Flexible policy management: a policy consists of several rules and enable to add/remove rule.

High-Level Architecture


An overall summary of Bilean logical architecture.

The main components of Bilean are:


 * The bileanclient component is A CLI communicates with the bilean-api.
 * The bilean-api component provides an OpenStack-native ReST API that processes API requests by sending them to the bilean-engine over RPC.
 * The bilean-scheduler component manages all the jobs related to users and scheduler jobs to bilean-engine over RPC, a job is a timing task related to a user(Notify user to recharge .e.g.).
 * The bilean-notification component monitors the message bus for data provided by other OpenStack components such as Nova, then converts notifications into billing resources and sends to bilean-engine over AMQP.
 * The bilean-engine does the main billing work, operates all users, rules and policies.

Resources
- Bilean: https://launchpad.net/bilean - BileanClient: https://launchpad.net/python-bileanclient - Bilean: https://git.openstack.org/openstack/bilean - BileanClient: https://git.openstack.org/openstack/python-bileanclient - Bilean: https://bugs.launchpad.net/bilean - BileanClient: https://bugs.launchpad.net/python-bileanclient - https://blueprints.launchpad.net/bilean - #openstack-bilean at FreeNode - http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
 * Projects on Launchpad
 * Code Repositories
 * Bug Tracking
 * Blueprints
 * IRC channel
 * Mailing list (prefix subjects with [Bilean] for faster responses)