def reregistered(self, driver, masterInfo):
"""
Invoked when the scheduler re-registers with a newly elected Mesos
master. This is only called when the scheduler has previously been
registered. masterInfo contains information about the newly elected
master.
See documentation for :meth:`mesos_api.mesos.Scheduler.reregistered`.
"""
self._driver = driver
self._master_hostname = masterInfo.hostname
self._master_port = masterInfo.port
logger.info('Scale scheduler re-registered with Mesos master at %s:%i',
self._master_hostname, self._master_port)
Scheduler.objects.update_master(self._master_hostname, self._master_port)
scheduler_mgr.update_from_mesos(mesos_address=HostAddress(self._master_hostname, self._master_port))
# Update driver for background threads
self._db_sync_thread.driver = self._driver
recon_mgr.driver = self._driver
self._scheduling_thread.driver = self._driver
self._reconcile_running_jobs()
def registered(self, driver, frameworkId, masterInfo):
"""
Invoked when the scheduler successfully registers with a Mesos master.
It is called with the frameworkId, a unique ID generated by the
master, and the masterInfo which is information about the master
itself.
See documentation for :meth:`mesos_api.mesos.Scheduler.registered`.
"""
self._driver = driver
self._framework_id = frameworkId.value
self._master_hostname = masterInfo.hostname
self._master_port = masterInfo.port
logger.info('Scale scheduler registered as framework %s with Mesos master at %s:%i',
self._framework_id, self._master_hostname, self._master_port)
initialize_system()
Scheduler.objects.update_master(self._master_hostname, self._master_port)
scheduler_mgr.update_from_mesos(self._framework_id, HostAddress(self._master_hostname, self._master_port))
recon_mgr.driver = self._driver
# Initial database sync
job_type_mgr.sync_with_database()
scheduler_mgr.sync_with_database()
workspace_mgr.sync_with_database()
# Start up background threads
self._db_sync_thread = DatabaseSyncThread(self._driver)
db_sync_thread = threading.Thread(target=self._db_sync_thread.run)
db_sync_thread.daemon = True
db_sync_thread.start()
self._recon_thread = ReconciliationThread()
recon_thread = threading.Thread(target=self._recon_thread.run)
recon_thread.daemon = True
recon_thread.start()
self._scheduling_thread = SchedulingThread(self._driver, self._framework_id)
scheduling_thread = threading.Thread(target=self._scheduling_thread.run)
scheduling_thread.daemon = True
scheduling_thread.start()
self._task_thread = TaskUpdateThread()
task_thread = threading.Thread(target=self._task_thread.run)
task_thread.daemon = True
task_thread.start()
self._reconcile_running_jobs()
