def save(self, context=None):
"""Save updates to this VolumeMapping.
Updates will be made column by column based on the result
of self.what_changed().
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object.
"""
updates = self.obj_get_changes()
if 'container' in updates:
raise exception.ObjectActionError(action='save',
reason='container changed')
if 'volume' in updates:
raise exception.ObjectActionError(action='save',
reason='volume changed')
updates.pop('id', None)
self._update_volume(context, updates)
dbapi.update_volume_mapping(context, self.uuid, updates)
self.obj_reset_changes()
def create(self, context):
"""Create a VolumeMapping record in the DB.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object.
"""
if self.obj_attr_is_set('id'):
raise exception.ObjectActionError(action='create',
reason='already created')
values = self.obj_get_changes()
if 'container' in values:
raise exception.ObjectActionError(action='create',
reason='container assigned')
if 'volume' in values:
raise exception.ObjectActionError(action='create',
reason='volume assigned')
self._create_volume(context, values)
db_volume = dbapi.create_volume_mapping(context, values)
self._from_db_object(self, db_volume)
def obj_load_attr(self, attrname):
if attrname not in CONTAINER_OPTIONAL_ATTRS:
raise exception.ObjectActionError(
action='obj_load_attr',
reason=_('attribute %s not lazy-loadable') % attrname)
if not self._context:
raise exception.OrphanedObjectError(method='obj_load_attr',
objtype=self.obj_name())
LOG.debug("Lazy-loading '%(attr)s' on %(name)s uuid %(uuid)s", {
'attr': attrname,
'name': self.obj_name(),
'uuid': self.uuid,
})
# NOTE(danms): We handle some fields differently here so that we
# can be more efficient
if attrname == 'pci_devices':
self._load_pci_devices()
if attrname == 'exec_instances':
self._load_exec_instances()
if attrname == 'registry':
self._load_registry()
self.obj_reset_changes([attrname])
def obj_load_attr(self, attrname):
if attrname not in VOLUME_MAPPING_OPTIONAL_ATTRS:
raise exception.ObjectActionError(
action='obj_load_attr',
reason='attribute %s not lazy-loadable' % attrname)
if not self._context:
raise exception.OrphanedObjectError(method='obj_load_attr',
objtype=self.obj_name())
LOG.debug("Lazy-loading '%(attr)s' on %(name)s", {
'attr': attrname,
'name': self.obj_name(),
})
if attrname in VOLUME_ATTRS:
value = getattr(self.volume, attrname)
setattr(self, attrname, value)
self.obj_reset_changes(fields=[attrname])
if attrname == 'container':
self.container = container.ContainerBase.get_container_any_type(
self._context, self.container_uuid)
self.obj_reset_changes(fields=['container'])
if attrname == 'volume':
self.volume = volume_obj.Volume.get_by_id(self._context,
self.volume_id)
self.obj_reset_changes(fields=['volume'])
def destroy(self, context=None):
"""Delete the VolumeMapping from the DB.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object.
"""
if not self.obj_attr_is_set('id'):
raise exception.ObjectActionError(action='destroy',
reason='already destroyed')
dbapi.destroy_volume_mapping(context, self.uuid)
delattr(self, 'id')
self.obj_reset_changes()
def obj_load_attr(self, attrname):
if attrname not in VOLUME_MAPPING_OPTIONAL_ATTRS:
raise exception.ObjectActionError(
action='obj_load_attr',
reason='attribute %s not lazy-loadable' % attrname)
if not self._context:
raise exception.OrphanedObjectError(method='obj_load_attr',
objtype=self.obj_name())
LOG.debug("Lazy-loading '%(attr)s' on %(name)s uuid %(uuid)s", {
'attr': attrname,
'name': self.obj_name(),
'uuid': self.uuid,
})
self.container = container.Container.get_by_uuid(
self._context, self.container_uuid)
self.obj_reset_changes(fields=['container'])
def create(self, context):
"""Create a Container record in the DB.
:param context: Security context. NOTE: This should only
be used internally by the indirection_api.
Unfortunately, RPC requires context as the first
argument, even though we don't use it.
A context should be set when instantiating the
object, e.g.: Capsule(context)
"""
values = self.obj_get_changes()
if 'containers' in values:
raise exception.ObjectActionError(action='create',
reason='containers assigned')
db_capsule = dbapi.create_capsule(context, values)
self._from_db_object(self, db_capsule)
