class ServerGroup(base.MoganObject, object_base.VersionedObjectDictCompat): # Version 1.0: Initial version VERSION = '1.0' dbapi = dbapi.get_instance() fields = { 'id': object_fields.IntegerField(), 'user_id': object_fields.StringField(nullable=True), 'project_id': object_fields.StringField(nullable=True), 'uuid': object_fields.UUIDField(), 'name': object_fields.StringField(nullable=True), 'policies': object_fields.ListOfStringsField(nullable=True), 'members': object_fields.ListOfStringsField(nullable=True), } @staticmethod def _from_db_object(context, server_group, db_server): """Method to help with migration to objects. Converts a database entity to a formal object. """ for field in server_group.fields: server_group[field] = db_server[field] server_group._context = context server_group.obj_reset_changes() return server_group def create(self): values = self.obj_get_changes() policies = values.pop('policies', None) members = values.pop('members', None) db_group = self.dbapi.server_group_create(self._context, values, policies=policies, members=members) self._from_db_object(self._context, self, db_group) @classmethod def get_by_uuid(cls, context, uuid): db_group = cls.dbapi.server_group_get(context, uuid) return cls._from_db_object(context, cls(), db_group) def destroy(self): self.dbapi.server_group_delete(self._context, self.uuid) self.obj_reset_changes() @classmethod def add_members(cls, context, group_uuid, members): cls.dbapi.server_group_members_add(context, group_uuid, members) def save(self, context=None): updates = self.obj_get_changes() self.dbapi.server_group_update(context, self.uuid, updates) self.obj_reset_changes()
class Flavor(base.MoganObject, object_base.VersionedObjectDictCompat): # Version 1.0: Initial version VERSION = '1.0' dbapi = dbapi.get_instance() fields = { 'uuid': object_fields.UUIDField(nullable=True), 'name': object_fields.StringField(nullable=True), 'description': object_fields.StringField(nullable=True), 'is_public': object_fields.BooleanField(), 'disabled': object_fields.BooleanField(), 'resources': object_fields.FlexibleDictField(nullable=True), 'resource_traits': object_fields.FlexibleDictField(nullable=True), 'projects': object_fields.ListOfStringsField(), } def __init__(self, *args, **kwargs): super(Flavor, self).__init__(*args, **kwargs) self._orig_projects = {} @staticmethod def _from_db_object(context, flavor, db_flavor, expected_attrs=None): if expected_attrs is None: expected_attrs = [] for name, field in flavor.fields.items(): if name in OPTIONAL_FIELDS: continue value = db_flavor[name] if isinstance(field, object_fields.IntegerField): value = value if value is not None else 0 flavor[name] = value if 'projects' in expected_attrs: flavor._load_projects(context) flavor.obj_reset_changes() return flavor def _load_projects(self, context): self.projects = [x['project_id'] for x in self.dbapi.flavor_access_get(context, self.uuid)] self.obj_reset_changes(['projects']) def obj_reset_changes(self, fields=None, recursive=False): super(Flavor, self).obj_reset_changes(fields=fields, recursive=recursive) if fields is None or 'projects' in fields: self._orig_projects = (list(self.projects) if self.obj_attr_is_set('projects') else []) def obj_what_changed(self): changes = super(Flavor, self).obj_what_changed() if 'projects' in self and self.projects != self._orig_projects: changes.add('projects') return changes @staticmethod def _from_db_object_list(db_objects, cls, context): """Converts a list of database entities to a list of formal objects.""" return [Flavor._from_db_object(context, cls(context), obj) for obj in db_objects] @classmethod def list(cls, context): """Return a list of Flavor objects.""" db_flavors = cls.dbapi.flavor_get_all(context) return Flavor._from_db_object_list(db_flavors, cls, context) @classmethod def get(cls, context, flavor_uuid): """Find a Flavor and return a Flavor object.""" db_flavor = cls.dbapi.flavor_get(context, flavor_uuid) flavor = Flavor._from_db_object( context, cls(context), db_flavor, expected_attrs=['projects']) return flavor def create(self, context=None): """Create a Flavor record in the DB.""" values = self.obj_get_changes() db_flavor = self.dbapi.flavor_create(context, values) self._from_db_object(context, self, db_flavor) def destroy(self, context=None): """Delete the Flavor from the DB.""" self.dbapi.flavor_destroy(context, self.uuid) self.obj_reset_changes() def save(self, context=None): updates = self.obj_get_changes() projects = updates.pop('projects', None) # access projects if projects is not None: deleted_projects = set(self._orig_projects) - set(projects) added_projects = set(projects) - set(self._orig_projects) else: added_projects = deleted_projects = None if added_projects or deleted_projects: self.save_projects(context, added_projects, deleted_projects) self.dbapi.flavor_update(context, self.uuid, updates) def save_projects(self, context, to_add=None, to_delete=None): """Add or delete projects. :param:to_add: A list of projects to add :param:to_delete: A list of projects to remove """ ident = self.uuid to_add = to_add if to_add is not None else [] to_delete = to_delete if to_delete is not None else [] for project_id in to_add: self.dbapi.flavor_access_add(context, ident, project_id) for project_id in to_delete: self.dbapi.flavor_access_remove(context, ident, project_id) self.obj_reset_changes(['projects'])