def server_group_update(self, context, group_uuid, values):
"""Update the attributes of a group.
If values contains a metadata key, it updates the aggregate metadata
too. Similarly for the policies and members.
"""
group_query = model_query(
context, models.ServerGroup).filter_by(uuid=group_uuid)
group = group_query.first()
if not group:
raise exception.ServerGroupNotFound(group_uuid=group_uuid)
policies = values.get('policies')
if policies is not None:
self._server_group_policies_add(context, group.id,
values.pop('policies'), True)
members = values.get('members')
if members is not None:
self._server_group_members_add(context, group.id,
values.pop('members'), True)
with _session_for_write():
group_query.update(values)
if policies:
values['policies'] = policies
if members:
values['members'] = members
def server_group_get(self, context, group_uuid):
"""Get a specific group by uuid."""
columns_to_join = ['_policies', '_members']
query = model_query(context, models.ServerGroup)
for c in columns_to_join:
query = query.options(orm.joinedload(c))
query = query.filter(models.ServerGroup.uuid == group_uuid)
group = query.first()
if not group:
raise exception.ServerGroupNotFound(group_uuid=group_uuid)
return group
def server_group_delete(self, context, group_uuid):
"""Delete a group."""
query = model_query(context,
models.ServerGroup).filter_by(uuid=group_uuid)
group = query.first()
if not group:
raise exception.ServerGroupNotFound(group_uuid=group_uuid)
# Delete policies and members
instance_models = [models.ServerGroupPolicy, models.ServerGroupMember]
for model in instance_models:
model_query(context, model).filter_by(group_id=group.id).delete()
with _session_for_write():
query.delete()
def server_group_members_add(self, context, group_uuid, members):
group = model_query(
context, models.ServerGroup).filter_by(uuid=group_uuid).first()
if not group:
raise exception.ServerGroupNotFound(group_uuid=group_uuid)
self._server_group_members_add(context, group.id, members)