def _exec_usage(self):
with db_session() as session:
# Next check if it's time to send bandwidth usage notifications
delta = datetime.timedelta(minutes=self.usage_freq)
exp = timeutils.utcnow() - delta
start, = session.query(
Billing.last_update
).filter(Billing.name == "usage").\
first()
if start and start > exp:
# Not time yet
LOG.info('Not time to send usage statistics yet {0}'.
format(exp))
session.rollback()
return
# Check the connection before sending the notifications
if not test_mnb_connection():
# Abort the exists notifications
LOG.info("Aborting usage notifications. Could not connect")
session.rollback()
return
# Calculate the stopping point by rounding backward to the nearest
# N minutes. i.e. if N = 60, this will round us back to HH:00:00,
# or if N = 15, it will round us back to HH:15:00, HH:30:00,
# HH:45:00, or HH:00:00, whichever is closest.
N = cfg.CONF['admin_api'].usage_freq
now = timeutils.utcnow()
stop = now - datetime.timedelta(minutes=now.minute % N,
seconds=now.second,
microseconds=now.microsecond)
# Release the lock
session.query(Billing).\
filter(Billing.name == "usage").\
update({"last_update": stop},
synchronize_session='fetch')
session.commit()
# Send the usage notifications. Pass the timestamps to save
# queries.
update_mnb('lbaas.bandwidth.usage', start, stop)
def _exec_exists(self):
with db_session() as session:
# Check if it's time to send exists notifications
delta = datetime.timedelta(minutes=self.exists_freq)
exp = timeutils.utcnow() - delta
exp_time = exp.strftime('%Y-%m-%d %H:%M:%S')
updated = session.query(
Billing.last_update
).filter(Billing.name == "exists").\
filter(Billing.last_update > exp_time).\
first()
if updated is not None:
# Not time yet
LOG.info('Not time to send exists notifications yet {0}'.
format(exp_time))
session.rollback()
return
# Check the connection before sending the notifications
if not test_mnb_connection():
# Abort the exists notifications
LOG.info("Aborting exists notifications. Could not connect")
session.rollback()
return
#Update the exists timestamp now
session.query(Billing).\
filter(Billing.name == "exists").\
update({"last_update": func.now()},
synchronize_session='fetch')
session.commit()
# Send the notifications
update_mnb('lbaas.instance.exists', None, None)
