8.1 Buildmaster Service Hierarchy

Buildbot uses Twisted's service hierarchy heavily. The hierarchy looks like this:

• BuildMaster This is the top-level service.
  • BotMaster The BotMaster manages all of the slaves. BuildSlave instances are added as child services of the BotMaster.
  • ChangeManager The ChangeManager manages the active change sources, as well as the stream of changes received from those sources.
  • SchedulerManager The SchedulerManager manages the active schedulers and handles inter-scheduler notifications.
  • IStatusReceiver implementations

    Objects from the 'status' configuration key are attached directly to the buildmaster. These classes should inherit from StatusReceiver or StatusReceiverMultiService and include an 'implements(IStatusReceiver)' stanza.