def _backup_will_satisfy(self, most_recent, last_backup, now, frequency, fudge_factor=0.04):
# If the backup doesn't exist, it's won't satisfy
if not most_recent:
return False
# Get backup metadata and time since backup
(mr_ts, __, __) = self._backup_metadata_get(most_recent)
mr_delta = timeutils.delta_seconds(mr_ts, now)
# If the backup isn't recent enough, it won't satisfy
if mr_delta >= frequency:
return False
# Check that the backup was done long enough after the last
# backup for this schedule
if last_backup:
(lb_ts, __, __) = self._backup_metadata_get(last_backup)
spacing = timeutils.delta_seconds(lb_ts, mr_ts)
# Allow a bit of a fudge factor to encourage backup
# schedules not to get out of sync.
if spacing < (frequency * (1.0 - fudge_factor)):
return False
# Everything looks OK
return True
def _inner():
if initial_delay:
greenthread.sleep(initial_delay)
try:
while self._running:
start = timeutils.utcnow()
self.f(*self.args, **self.kw)
end = timeutils.utcnow()
if not self._running:
break
delay = interval - timeutils.delta_seconds(start, end)
if delay <= 0:
LOG.warn(_('task run outlasted interval by %s sec') %
-delay)
greenthread.sleep(delay if delay > 0 else 0)
except LoopingCallDone as e:
self.stop()
done.send(e.retvalue)
except Exception:
LOG.exception(_('in fixed duration looping call'))
done.send_exception(*sys.exc_info())
return
else:
done.send(True)
def apply(self, context, resource, provision_doc):
timeout = CONF.orchestration.validate_boot_timeout
check_interval = CONF.orchestration.validate_boot_check_interval
provisioning_result = provision_doc.instances.instance_host_map
instance_uuids = provisioning_result.keys()
filters = {'uuid': [uuid for uuid in instance_uuids],
'vm_state': vm_states.ACTIVE}
start = datetime.datetime.now()
all_instances_active = False
while timeutils.delta_seconds(start, datetime.datetime.now())\
<= timeout:
active_instances = self.conductor_api.instance_get_all_by_filters(
context, filters)
if len(active_instances) == len(provisioning_result):
all_instances_active = True
LOG.debug("All instances ACTIVE. Request tracking %s complete",
resource.tracking_id)
self.backend_driver.resource_tracker_update(context,
resource.tracking_id,
{'status': states.COMPLETED})
break
time.sleep(check_interval)
if not all_instances_active:
# Check hypervisor ack
# revert
pass
return orc_utils.DictableObject()
def apply(self, context, resource, provision_doc, **kwargs):
# TODO: Wait a given amount of time, periodically checking the database
# to see if the instance has came online, if after X amount of time
# it has not came online then ack the hypervisor directly to check
# if its online, if that doesn't work, bail out by performing different
# types of reconciliation in the revert method here...
timeout = CONF.orchestration.validate_boot_timeout
check_interval = CONF.orchestration.validate_boot_check_interval
provisioning_result = provision_doc.instances.instance_host_map
instance_uuids = provisioning_result.keys()
filters = {'uuid': [uuid for uuid in instance_uuids],
'vm_state': vm_states.ACTIVE}
start = datetime.datetime.now()
all_instances_active = False
while timeutils.delta_seconds(start, datetime.datetime.now())\
<= timeout:
active_instances = self.conductor_api.instance_get_all_by_filters(
context, filters)
if len(active_instances) == len(provisioning_result):
all_instances_active = True
LOG.debug("All instances ACTIVE. Request tracking %s complete",
resource.tracking_id)
self.db.resource_tracker_update(context, resource.tracking_id,
{'status': states.COMPLETED})
break
time.sleep(check_interval)
if not all_instances_active:
# Check hypervisor ack
# revert
pass
return orc_utils.DictableObject()
def periodic_tasks(self, context, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
idle_for = DEFAULT_INTERVAL
for task_name, task in self._periodic_tasks:
full_task_name = '.'.join([self.__class__.__name__, task_name])
now = timeutils.utcnow()
spacing = self._periodic_spacing[task_name]
last_run = self._periodic_last_run[task_name]
# If a periodic task is _nearly_ due, then we'll run it early
if spacing is not None and last_run is not None:
due = last_run + datetime.timedelta(seconds=spacing)
if not timeutils.is_soon(due, 0.2):
idle_for = min(idle_for, timeutils.delta_seconds(now, due))
continue
if spacing is not None:
idle_for = min(idle_for, spacing)
LOG.debug(_("Running periodic task %(full_task_name)s"), locals())
self._periodic_last_run[task_name] = timeutils.utcnow()
try:
task(self, context)
except Exception as e:
if raise_on_error:
raise
LOG.exception(_("Error during %(full_task_name)s: %(e)s"),
locals())
eventlet.sleep(0)
return idle_for
def _inner():
if initial_delay:
greenthread.sleep(initial_delay)
try:
while self._running:
start = timeutils.utcnow()
self.f(*self.args, **self.kw)
end = timeutils.utcnow()
if not self._running:
break
delay = interval - timeutils.delta_seconds(start, end)
if delay <= 0:
LOG.warn(
_('task run outlasted interval by %s sec') %
-delay)
greenthread.sleep(delay if delay > 0 else 0)
except LoopingCallDone as e:
self.stop()
done.send(e.retvalue)
except Exception:
LOG.exception(_('in fixed duration looping call'))
done.send_exception(*sys.exc_info())
return
else:
done.send(True)
def run_periodic_tasks(self, context, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
idle_for = DEFAULT_INTERVAL
for task_name, task in self._periodic_tasks:
full_task_name = '.'.join([self.__class__.__name__, task_name])
now = timeutils.utcnow()
spacing = self._periodic_spacing[task_name]
last_run = self._periodic_last_run[task_name]
# If a periodic task is _nearly_ due, then we'll run it early
if spacing is not None and last_run is not None:
due = last_run + datetime.timedelta(seconds=spacing)
if not timeutils.is_soon(due, 0.2):
idle_for = min(idle_for, timeutils.delta_seconds(now, due))
continue
if spacing is not None:
idle_for = min(idle_for, spacing)
LOG.debug(_("Running periodic task %(full_task_name)s"), locals())
self._periodic_last_run[task_name] = timeutils.utcnow()
try:
task(self, context)
except Exception as e:
if raise_on_error:
raise
LOG.exception(_("Error during %(full_task_name)s: %(e)s"),
locals())
time.sleep(0)
return idle_for
def _backup_is_current(self, backup, now, frequency):
# If the backup doesn't exist, it's not current :)
if not backup:
return False
# Get backup metadata
(ts, __, __) = self._backup_metadata_get(backup)
# Is the timestamp within the range?
delta = timeutils.delta_seconds(ts, now)
return delta < frequency
def _inner():
if initial_delay:
greenthread.sleep(initial_delay)
try:
while self._running:
start = timeutils.utcnow()
self.f(*self.args, **self.kw)
end = timeutils.utcnow()
if not self._running:
break
delay = interval - timeutils.delta_seconds(start, end)
if delay <= 0:
LOG.warn(_('task run outlasted interval by %s sec') %
-delay)
greenthread.sleep(delay if delay > 0 else 0)
except LoopingCallDone, e:
self.stop()
done.send(e.retvalue)
def is_up(self, service_ref):
"""Moved from nova.utils
Check whether a service is up based on last heartbeat.
"""
last_heartbeat = service_ref['updated_at'] or service_ref['created_at']
if isinstance(last_heartbeat, basestring):
# NOTE(russellb) If this service_ref came in over rpc via
# conductor, then the timestamp will be a string and needs to be
# converted back to a datetime.
last_heartbeat = timeutils.parse_strtime(last_heartbeat)
else:
# Objects have proper UTC timezones, but the timeutils comparison
# below does not (and will fail)
last_heartbeat = last_heartbeat.replace(tzinfo=None)
# Timestamps in DB are UTC.
elapsed = timeutils.delta_seconds(last_heartbeat, timeutils.utcnow())
LOG.debug('DB_Driver.is_up last_heartbeat = %(lhb)s elapsed = %(el)s',
{'lhb': str(last_heartbeat), 'el': str(elapsed)})
return abs(elapsed) <= CONF.service_down_time
def _backup_needed_by(self, backup, schedules, now):
# List of schedules needing this backup
needed_by = []
# Get backup metadata
(ts, __, satisfies) = self._backup_metadata_get(backup)
# For each schedule,
for schedule in schedules:
# Get schedule metadata
(schedule_id, __, retention, active) = self._schedule_metadata_get(schedule)
# If this backup was made for this schedule,
if schedule_id in satisfies:
# If this schedule is inactive, or if
# this backup is within the retention period,
delta = timeutils.delta_seconds(ts, now)
if active == False or delta < retention:
# Add the schedule to the list
needed_by.append(schedule_id)
# Return list
return needed_by
