def _validate_segment_update_supported(self):
# TODO(hjensas): Validation to ensure the subnet-segmentid-writable
# extension is available.
# https://storyboard.openstack.org/#!/story/2002189
# Current segment id must be None
if self.properties[self.SEGMENT] is not None:
msg = _('Updating the subnet segment assciation only allowed '
'when the current segment_id is None. The subnet is '
'currently associated with segment. In this state update')
raise exception.ResourceActionNotSupported(action=msg)
else:
return True
def handle_delete(self):
"""Perform specified delete policy."""
if self.resource_id is None:
return
try:
self.client().delete_container(self.resource_id)
except Exception as ex:
if self.client_plugin().is_conflict(ex):
container, objects = self.client().get_container(
self.resource_id)
if objects:
msg = _("The bucket you tried to delete is not empty (%s)."
) % self.resource_id
raise exception.ResourceActionNotSupported(action=msg)
self.client_plugin().ignore_not_found(ex)
def handle_delete(self):
if self.resource_id is None:
return
objects = self._get_objects()
if objects:
if self.properties[self.PURGE_ON_DELETE]:
self._deleter(objects.pop()) # save first container refresh
else:
msg = _("Deleting non-empty container (%(id)s) "
"when %(prop)s is False") % {
'id': self.resource_id,
'prop': self.PURGE_ON_DELETE}
raise exception.ResourceActionNotSupported(action=msg)
return objects
def signal(self, details=None):
'''
signal the resource. Subclasses should provide a handle_signal() method
to implement the signal, the base-class raise an exception if no
handler is implemented.
'''
def get_string_details():
if details is None:
return 'No signal details provided'
if isinstance(details, basestring):
return details
if isinstance(details, dict):
if all(k in details
for k in ('previous', 'current', 'reason')):
# this is from Ceilometer.
auto = '%(previous)s to %(current)s (%(reason)s)' % details
return 'alarm state changed from %s' % auto
elif 'state' in details:
# this is from watchrule
return 'alarm state changed to %(state)s' % details
return 'Unknown'
if not callable(getattr(self, 'handle_signal', None)):
raise exception.ResourceActionNotSupported(action='signal')
try:
signal_result = self.handle_signal(details)
if signal_result:
reason_string = "Signal: %s" % signal_result
else:
reason_string = get_string_details()
self._add_event('signal', self.status, reason_string)
except Exception as ex:
LOG.exception(
_('signal %(name)s : %(msg)s') % {
'name': str(self),
'msg': ex
})
failure = exception.ResourceFailure(ex, self)
raise failure
def signal(self, details=None):
'''
signal the resource. Subclasses should provide a handle_signal() method
to implement the signal, the base-class raise an exception if no
handler is implemented.
'''
if self.action in (self.SUSPEND, self.DELETE):
self._add_event(self.action, self.status,
'Cannot signal resource during %s' % self.action)
ex = Exception(_('Cannot signal resource during %s') % self.action)
raise exception.ResourceFailure(ex, self)
def get_string_details():
if details is None:
return 'No signal details provided'
if isinstance(details, six.string_types):
return details
if isinstance(details, dict):
if all(k in details
for k in ('previous', 'current', 'reason')):
# this is from Ceilometer.
auto = '%(previous)s to %(current)s (%(reason)s)' % details
return 'alarm state changed from %s' % auto
elif 'state' in details:
# this is from watchrule
return 'alarm state changed to %(state)s' % details
return 'Unknown'
# Clear the hook without interfering with resources'
# `handle_signal` callbacks:
if (details and 'unset_hook' in details
and environment.valid_hook_type(details.get('unset_hook'))):
hook = details['unset_hook']
if self.has_hook(hook):
self.clear_hook(hook)
LOG.info(_LI('Clearing %(hook)s hook on %(resource)s'), {
'hook': hook,
'resource': six.text_type(self)
})
self._add_event(self.action, self.status,
"Hook %s is cleared" % hook)
return
if not callable(getattr(self, 'handle_signal', None)):
raise exception.ResourceActionNotSupported(action='signal')
try:
signal_result = self.handle_signal(details)
if signal_result:
reason_string = "Signal: %s" % signal_result
else:
reason_string = get_string_details()
self._add_event('SIGNAL', self.status, reason_string)
except Exception as ex:
LOG.exception(
_LE('signal %(name)s : %(msg)s') % {
'name': six.text_type(self),
'msg': ex
})
failure = exception.ResourceFailure(ex, self)
raise failure
