def refresh_cluster_ssc(backend, na_server, vserver, synchronous=False):
"""Refresh cluster ssc for backend."""
if not isinstance(backend, driver.VolumeDriver):
raise exception.InvalidInput(reason=_("Backend not a VolumeDriver."))
if not isinstance(na_server, api.NaServer):
raise exception.InvalidInput(reason=_("Backend server not NaServer."))
delta_secs = getattr(backend, 'ssc_run_delta_secs', 1800)
if getattr(backend, 'ssc_job_running', None):
LOG.warn(_('ssc job in progress. Returning... '))
return
elif (getattr(backend, 'ssc_run_time', None) is None or
(backend.ssc_run_time and
timeutils.is_newer_than(backend.ssc_run_time, delta_secs))):
if synchronous:
get_cluster_latest_ssc(backend, na_server, vserver)
else:
t = Timer(0, get_cluster_latest_ssc,
args=[backend, na_server, vserver])
t.start()
elif getattr(backend, 'refresh_stale_running', None):
LOG.warn(_('refresh stale ssc job in progress. Returning... '))
return
else:
if backend.stale_vols:
if synchronous:
refresh_cluster_stale_ssc(backend, na_server, vserver)
else:
t = Timer(0, refresh_cluster_stale_ssc,
args=[backend, na_server, vserver])
t.start()
def refresh_cluster_ssc(backend, na_server, vserver, synchronous=False):
"""Refresh cluster ssc for backend."""
if not isinstance(backend, driver.VolumeDriver):
raise exception.InvalidInput(reason=_("Backend not a VolumeDriver."))
if not isinstance(na_server, api.NaServer):
raise exception.InvalidInput(reason=_("Backend server not NaServer."))
delta_secs = getattr(backend, 'ssc_run_delta_secs', 1800)
if getattr(backend, 'ssc_job_running', None):
LOG.warn(_('ssc job in progress. Returning... '))
return
elif (getattr(backend, 'ssc_run_time', None) is None or
(backend.ssc_run_time and
timeutils.is_newer_than(backend.ssc_run_time, delta_secs))):
if synchronous:
get_cluster_latest_ssc(backend, na_server, vserver)
else:
t = Timer(0, get_cluster_latest_ssc,
args=[backend, na_server, vserver])
t.start()
elif getattr(backend, 'refresh_stale_running', None):
LOG.warn(_('refresh stale ssc job in progress. Returning... '))
return
else:
if backend.stale_vols:
if synchronous:
refresh_cluster_stale_ssc(backend, na_server, vserver)
else:
t = Timer(0, refresh_cluster_stale_ssc,
args=[backend, na_server, vserver])
t.start()