def autostart_service():
'''
Attempt to restart the service if it is not running.
'''
kafka = Kafka()
if kafka.is_running():
hookenv.status_set('active', 'ready')
return
for i in range(3):
hookenv.status_set(
'maintenance',
'attempting to restart kafka, '
'attempt: {}'.format(i+1)
)
kafka.restart()
if kafka.is_running():
hookenv.status_set('active', 'ready')
return
hookenv.status_set('blocked', 'failed to start kafka; check syslog')
def restart():
hookenv.status_set('maintenance', 'Rolling restart')
kafka = Kafka()
if not kafka.is_running():
kafka.start()
else:
kafka.restart()
hookenv.open_port(hookenv.config()['port'])
# set app version string for juju status output
kafka_version = kafka.version()
hookenv.application_version_set(kafka_version)
hookenv.status_set('active', 'ready')
set_state('kafka.started')