iotronic/iotronic/objects/fleet.py

190 lines
7.1 KiB
Python

# coding=utf-8
#
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_utils import strutils
from oslo_utils import uuidutils
from iotronic.common import exception
from iotronic.db import api as db_api
from iotronic.objects import base
from iotronic.objects import utils as obj_utils
class Fleet(base.IotronicObject):
# Version 1.0: Initial version
VERSION = '1.0'
dbapi = db_api.get_instance()
fields = {
'id': int,
'uuid': obj_utils.str_or_none,
'name': obj_utils.str_or_none,
'project': obj_utils.str_or_none,
'description': obj_utils.str_or_none,
'extra': obj_utils.dict_or_none,
}
@staticmethod
def _from_db_object(fleet, db_fleet):
"""Converts a database entity to a formal object."""
for field in fleet.fields:
fleet[field] = db_fleet[field]
fleet.obj_reset_changes()
return fleet
@base.remotable_classmethod
def get(cls, context, fleet_id):
"""Find a fleet based on its id or uuid and return a Board object.
:param fleet_id: the id *or* uuid of a fleet.
:returns: a :class:`Board` object.
"""
if strutils.is_int_like(fleet_id):
return cls.get_by_id(context, fleet_id)
elif uuidutils.is_uuid_like(fleet_id):
return cls.get_by_uuid(context, fleet_id)
else:
raise exception.InvalidIdentity(identity=fleet_id)
@base.remotable_classmethod
def get_by_id(cls, context, fleet_id):
"""Find a fleet based on its integer id and return a Board object.
:param fleet_id: the id of a fleet.
:returns: a :class:`Board` object.
"""
db_fleet = cls.dbapi.get_fleet_by_id(fleet_id)
fleet = Fleet._from_db_object(cls(context), db_fleet)
return fleet
@base.remotable_classmethod
def get_by_uuid(cls, context, uuid):
"""Find a fleet based on uuid and return a Board object.
:param uuid: the uuid of a fleet.
:returns: a :class:`Board` object.
"""
db_fleet = cls.dbapi.get_fleet_by_uuid(uuid)
fleet = Fleet._from_db_object(cls(context), db_fleet)
return fleet
@base.remotable_classmethod
def get_by_name(cls, context, name):
"""Find a fleet based on name and return a Board object.
:param name: the logical name of a fleet.
:returns: a :class:`Board` object.
"""
db_fleet = cls.dbapi.get_fleet_by_name(name)
fleet = Fleet._from_db_object(cls(context), db_fleet)
return fleet
@base.remotable_classmethod
def list(cls, context, limit=None, marker=None, sort_key=None,
sort_dir=None, filters=None):
"""Return a list of Fleet objects.
:param context: Security context.
:param limit: maximum number of resources to return in a single result.
:param marker: pagination marker for large data sets.
:param sort_key: column to sort results by.
:param sort_dir: direction to sort. "asc" or "desc".
:param filters: Filters to apply.
:returns: a list of :class:`Fleet` object.
"""
db_fleets = cls.dbapi.get_fleet_list(filters=filters,
limit=limit,
marker=marker,
sort_key=sort_key,
sort_dir=sort_dir)
return [Fleet._from_db_object(cls(context), obj)
for obj in db_fleets]
@base.remotable
def create(self, context=None):
"""Create a Fleet record in the DB.
Column-wise updates will be made based on the result of
self.what_changed(). If target_power_state is provided,
it will be checked against the in-database copy of the
fleet before updates are made.
: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.: Fleet(context)
"""
values = self.obj_get_changes()
db_fleet = self.dbapi.create_fleet(values)
self._from_db_object(self, db_fleet)
@base.remotable
def destroy(self, context=None):
"""Delete the Fleet 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, e.g.: Fleet(context)
"""
self.dbapi.destroy_fleet(self.uuid)
self.obj_reset_changes()
@base.remotable
def save(self, context=None):
"""Save updates to this Fleet.
Column-wise updates will be made based on the result of
self.what_changed(). If target_power_state is provided,
it will be checked against the in-database copy of the
fleet before updates are made.
: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.: Fleet(context)
"""
updates = self.obj_get_changes()
self.dbapi.update_fleet(self.uuid, updates)
self.obj_reset_changes()
@base.remotable
def refresh(self, context=None):
"""Refresh the object by re-fetching 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, e.g.: Fleet(context)
"""
current = self.__class__.get_by_uuid(self._context, self.uuid)
for field in self.fields:
if (hasattr(
self, base.get_attrname(field))
and self[field] != current[field]):
self[field] = current[field]