def start(self,
interval=defaults.START_INTERVAL,
timeout=defaults.START_TIMEOUT,
delete_amqp_queue=defaults.DELETE_AMQP_QUEUE_BEFORE_START):
"""
Starts the daemon process.
:param interval: the interval in seconds to sleep when waiting for
the daemon to be ready.
:param timeout: the timeout in seconds to wait for the daemon to be
ready.
:param delete_amqp_queue: delete any queues with the name of the
current daemon queue in the broker.
:raise DaemonStartupTimeout: in case the agent failed to start in the
given amount of time.
:raise DaemonException: in case an error happened during the agent
startup.
"""
if delete_amqp_queue:
self._logger.debug('Deleting AMQP queues')
self._delete_amqp_queues()
start_command = self.start_command()
self._logger.info(
'Starting daemon with command: {0}'.format(start_command))
self._runner.run(start_command)
end_time = time.time() + timeout
while time.time() < end_time:
self._logger.debug('Querying daemon {0} registered tasks'.format(
self.name))
if self._is_agent_registered():
# make sure the status command recognizes the daemon is up
status = self.status()
if status:
self._logger.debug('Daemon {0} has started'.format(
self.name))
return
self._logger.debug('Daemon {0} has not started yet. '
'Sleeping for {1} seconds...'.format(
self.name, interval))
time.sleep(interval)
self._logger.debug('Verifying there were no un-handled '
'exception during startup')
self._verify_no_celery_error()
raise exceptions.DaemonStartupTimeout(timeout, self.name)
def start(self,
interval=defaults.START_INTERVAL,
timeout=defaults.START_TIMEOUT,
delete_amqp_queue=defaults.DELETE_AMQP_QUEUE_BEFORE_START):
"""
Starts the daemon process.
:param interval: the interval in seconds to sleep when waiting for
the daemon to be ready.
:param timeout: the timeout in seconds to wait for the daemon to be
ready.
:param delete_amqp_queue: delete any queues with the name of the
current daemon queue in the broker.
:raise DaemonStartupTimeout: in case the agent failed to start in the
given amount of time.
:raise DaemonException: in case an error happened during the agent
startup.
"""
if delete_amqp_queue:
self._logger.warning('Deprecation warning:\n'
'The `delete_amqp_queue` param is no '
'longer used, and it is only left for '
'backwards compatibility')
start_command = self.start_command()
self._logger.info(
'Starting daemon with command: {0}'.format(start_command))
self._runner.run(start_command)
end_time = time.time() + timeout
while time.time() < end_time:
if self._is_daemon_running():
return
self._logger.debug('Daemon {0} is still not running. '
'Sleeping for {1} seconds...'.format(
self.name, interval))
time.sleep(interval)
self._verify_no_error()
raise exceptions.DaemonStartupTimeout(timeout, self.name)