def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'cgsnapshots':
self.cgsnapshots = objects.CGSnapshotList.get_all_by_group(
self._context, self.id)
if attrname == 'volumes':
self.volumes = objects.VolumeList.get_all_by_group(
self._context, self.id)
# If this consistency group doesn't belong to a cluster (cluster_name
# is empty), then cluster field will be None.
if attrname == 'cluster':
if self.cluster_name:
self.cluster = objects.Cluster.get_by_id(
self._context, name=self.cluster_name)
else:
self.cluster = None
self.obj_reset_changes(fields=[attrname])
def as_read_deleted(self, mode='yes'):
"""Context manager to make OVO with modified read deleted context.
This temporarily modifies the context embedded in an object to
have a different `read_deleted` parameter.
Parameter mode accepts most of the same parameters as our `model_query`
DB method. We support 'yes', 'no', and 'only'.
usage:
with obj.as_read_deleted():
obj.refresh()
if obj.status = 'deleted':
...
"""
if self._context is None:
raise exception.OrphanedObjectError(method='as_read_deleted',
objtype=self.obj_name())
original_mode = self._context.read_deleted
self._context.read_deleted = mode
try:
yield
finally:
self._context.read_deleted = original_mode
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'extra_specs':
self.extra_specs = db.volume_type_extra_specs_get(
self._context, self.id)
elif attrname == 'qos_specs':
if self.qos_specs_id:
self.qos_specs = objects.QualityOfServiceSpecs.get_by_id(
self._context, self.qos_specs_id)
else:
self.qos_specs = None
elif attrname == 'projects':
volume_type_projects = db.volume_type_access_get_all(
self._context, self.id)
self.projects = [x.project_id for x in volume_type_projects]
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'volume':
self.volume = objects.Volume.get_by_id(self._context,
self.volume_id)
if attrname == 'cgsnapshot':
if self.cgsnapshot_id is None:
self.cgsnapshot = None
else:
self.cgsnapshot = objects.CGSnapshot.get_by_id(
self._context, self.cgsnapshot_id)
if attrname == 'group_snapshot':
if self.group_snapshot_id is None:
self.group_snapshot = None
else:
self.group_snapshot = objects.GroupSnapshot.get_by_id(
self._context, self.group_snapshot_id)
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'metadata':
self.metadata = db.volume_metadata_get(self._context, self.id)
elif attrname == 'admin_metadata':
self.admin_metadata = {}
if self._context.is_admin:
self.admin_metadata = db.volume_admin_metadata_get(
self._context, self.id)
elif attrname == 'glance_metadata':
self.glance_metadata = db.volume_glance_metadata_get(
self._context, self.id)
elif attrname == 'volume_type':
self.volume_type = objects.VolumeType.get_by_id(
self._context, self.volume_type_id)
elif attrname == 'volume_attachment':
attachments = objects.VolumeAttachmentList.get_all_by_volume_id(
self._context, self.id)
self.volume_attachment = attachments
elif attrname == 'consistencygroup':
consistencygroup = objects.ConsistencyGroup.get_by_id(
self._context, self.consistencygroup_id)
self.consistencygroup = consistencygroup
elif attrname == 'snapshots':
self.snapshots = objects.SnapshotList.get_all_for_volume(
self._context, self.id)
self.obj_reset_changes(fields=[attrname])
def wrapper(self, *args, **kwargs):
ctxt = self._context
try:
if isinstance(args[0], (context.RequestContext)):
ctxt = args[0]
args = args[1:]
except IndexError:
pass
if ctxt is None:
raise exception.OrphanedObjectError(method=fn.__name__,
objtype=self.obj_name())
# Force this to be set if it wasn't before.
self._context = ctxt
if CinderObject.indirection_api:
updates, result = CinderObject.indirection_api.object_action(
ctxt, self, fn.__name__, args, kwargs)
for key, value in updates.iteritems():
if key in self.fields:
field = self.fields[key]
# NOTE(ndipanov): Since CinderObjectSerializer will have
# deserialized any object fields into objects already,
# we do not try to deserialize them again here.
if isinstance(value, CinderObject):
self[key] = value
else:
self[key] = field.from_primitive(self, key, value)
self.obj_reset_changes()
self._changed_fields = set(updates.get('obj_what_changed', []))
return result
else:
return fn(self, ctxt, *args, **kwargs)
def obj_load_attr(self, attrname):
if attrname not in OPTIONAL_FIELDS:
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())
if attrname == 'metadata':
self.metadata = db.volume_metadata_get(self._context, self.id)
elif attrname == 'admin_metadata':
self.admin_metadata = {}
if self._context.is_admin:
self.admin_metadata = db.volume_admin_metadata_get(
self._context, self.id)
elif attrname == 'volume_type':
self.volume_type = objects.VolumeType.get_by_id(
self._context, self.volume_type_id)
elif attrname == 'volume_attachment':
attachments = (objects.VolumeAttachmentList.get_all_by_volume_id(
self._context, self.id))
self.volume_attachment = attachments.objects
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'metadata':
self.metadata = db.volume_metadata_get(self._context, self.id)
elif attrname == 'admin_metadata':
self.admin_metadata = {}
if self._context.is_admin:
self.admin_metadata = db.volume_admin_metadata_get(
self._context, self.id)
elif attrname == 'glance_metadata':
try:
# NOTE(dulek): We're using alias here to have conversion from
# list to dict done there.
self.volume_glance_metadata = db.volume_glance_metadata_get(
self._context, self.id)
except exception.GlanceMetadataNotFound:
# NOTE(dulek): DB API raises when volume has no
# glance_metadata. Silencing this because at this level no
# metadata is a completely valid result.
self.glance_metadata = {}
elif attrname == 'volume_type':
# If the volume doesn't have volume_type, VolumeType.get_by_id
# would trigger a db call which raise VolumeTypeNotFound exception.
self.volume_type = (objects.VolumeType.get_by_id(
self._context, self.volume_type_id)
if self.volume_type_id else None)
elif attrname == 'volume_attachment':
attachments = objects.VolumeAttachmentList.get_all_by_volume_id(
self._context, self.id)
self.volume_attachment = attachments
elif attrname == 'consistencygroup':
consistencygroup = objects.ConsistencyGroup.get_by_id(
self._context, self.consistencygroup_id)
self.consistencygroup = consistencygroup
elif attrname == 'snapshots':
self.snapshots = objects.SnapshotList.get_all_for_volume(
self._context, self.id)
elif attrname == 'cluster':
# If this volume doesn't belong to a cluster (cluster_name is
# empty), then cluster field will be None.
if self.cluster_name:
self.cluster = objects.Cluster.get_by_id(
self._context, name=self.cluster_name)
else:
self.cluster = None
elif attrname == 'group':
group = objects.Group.get_by_id(self._context, self.group_id)
self.group = group
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'volume_types':
self.volume_types = objects.VolumeTypeList.get_all_types_for_qos(
self._context, self.id)
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
if attrname == 'group':
self.group = objects.Group.get_by_id(self._context, self.group_id)
if attrname == 'snapshots':
self.snapshots = objects.SnapshotList.get_all_for_group_snapshot(
self._context, self.id)
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
if attrname not in OPTIONAL_FIELDS:
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())
if attrname == 'cgsnapshots':
self.cgsnapshots = objects.CGSnapshotList.get_all_by_group(
self._context, self.id)
if attrname == 'volumes':
self.volumes = objects.VolumeList.get_all_by_group(self._context,
self.id)
self.obj_reset_changes(fields=[attrname])
def obj_load_attr(self, attrname):
"""Lazy load services attribute."""
# NOTE(geguileo): We only allow lazy loading services to raise
# awareness of the high cost of lazy loading num_hosts and
# num_down_hosts, so if we are going to need this information we should
# be certain we really need it and it should loaded when retrieving the
# data from the DB the first time we read the OVO.
if attrname != 'services':
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())
self.services = objects.ServiceList.get_all(
self._context, {'cluster_name': self.name})
self.obj_reset_changes(fields=('services',))
def obj_load_attr(self, attrname):
if attrname not in self.OPTIONAL_FIELDS:
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())
# NOTE(geguileo): We only have 1 optional field, so we don't need to
# confirm that we are loading the cluster.
# If this service doesn't belong to a cluster (cluster_name is empty),
# then cluster field will be None.
if self.cluster_name:
self.cluster = objects.Cluster.get_by_id(self._context, None,
name=self.cluster_name)
else:
self.cluster = None
self.obj_reset_changes(fields=(attrname,))
def obj_as_admin(self):
"""Context manager to make an object call as an admin.
This temporarily modifies the context embedded in an object to
be elevated() and restores it after the call completes. Example
usage:
with obj.obj_as_admin():
obj.save()
"""
if self._context is None:
raise exception.OrphanedObjectError(method='obj_as_admin',
objtype=self.obj_name())
original_context = self._context
self._context = self._context.elevated()
try:
yield
finally:
self._context = original_context
