afc227c25e
This adds a lazy-loading FixedIP.floating_ips property which mimics the use of the backref between the two objects in the SQLAlchemy model. This doesn't introduce a new database query because it was being used as a lazy-load in network manager already. Related to blueprint nova-network-objects Change-Id: I2f13f7a0463486e51c2317e02c2e7b378ac9e55d
197 lines
8.0 KiB
Python
197 lines
8.0 KiB
Python
# Copyright 2014 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from nova import db
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from nova import exception
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from nova.objects import base as obj_base
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from nova.objects import fields
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from nova.objects import instance as instance_obj
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from nova.objects import network as network_obj
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from nova.openstack.common import timeutils
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FIXED_IP_OPTIONAL_ATTRS = ['instance', 'network']
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class FixedIP(obj_base.NovaPersistentObject, obj_base.NovaObject):
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# Version 1.0: Initial version
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VERSION = '1.0'
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fields = {
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'id': fields.IntegerField(),
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'address': fields.IPV4Address(),
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'network_id': fields.IntegerField(nullable=True),
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'virtual_interface_id': fields.IntegerField(nullable=True),
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'instance_uuid': fields.UUIDField(nullable=True),
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'allocated': fields.BooleanField(),
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'leased': fields.BooleanField(),
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'reserved': fields.BooleanField(),
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'host': fields.StringField(nullable=True),
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'instance': fields.ObjectField('Instance', nullable=True),
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'network': fields.ObjectField('Network', nullable=True),
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}
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@property
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def floating_ips(self):
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# NOTE(danms): avoid circular import
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from nova.objects import floating_ip
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return floating_ip.FloatingIPList.get_by_fixed_ip_id(self._context,
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self.id)
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@staticmethod
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def _from_db_object(context, fixedip, db_fixedip, expected_attrs=None):
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if expected_attrs is None:
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expected_attrs = []
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for field in fixedip.fields:
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if field not in FIXED_IP_OPTIONAL_ATTRS:
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fixedip[field] = db_fixedip[field]
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# NOTE(danms): Instance could be deleted, and thus None
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if 'instance' in expected_attrs:
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fixedip.instance = instance_obj.Instance._from_db_object(
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context,
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instance_obj.Instance(),
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db_fixedip['instance']) if db_fixedip['instance'] else None
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if 'network' in expected_attrs:
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fixedip.network = network_obj.Network._from_db_object(
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context, network_obj.Network(), db_fixedip['network'])
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fixedip._context = context
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fixedip.obj_reset_changes()
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return fixedip
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@obj_base.remotable_classmethod
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def get_by_id(cls, context, id, expected_attrs=None):
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if expected_attrs is None:
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expected_attrs = []
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get_network = 'network' in expected_attrs
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db_fixedip = db.fixed_ip_get(context, id, get_network=get_network)
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return cls._from_db_object(context, cls(), db_fixedip, expected_attrs)
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@obj_base.remotable_classmethod
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def get_by_address(cls, context, address, expected_attrs=None):
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if expected_attrs is None:
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expected_attrs = []
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db_fixedip = db.fixed_ip_get_by_address(context, str(address),
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columns_to_join=expected_attrs)
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return cls._from_db_object(context, cls(), db_fixedip, expected_attrs)
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@obj_base.remotable_classmethod
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def get_by_floating_address(cls, context, address):
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db_fixedip = db.fixed_ip_get_by_floating_address(context, address)
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return cls._from_db_object(context, cls(), db_fixedip)
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@obj_base.remotable_classmethod
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def get_by_network_and_host(cls, context, network_id, host):
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db_fixedip = db.fixed_ip_get_by_network_host(context, network_id, host)
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return cls._from_db_object(context, cls(), db_fixedip)
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@obj_base.remotable_classmethod
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def associate(cls, context, address, instance_uuid, network_id=None,
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reserved=False):
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db_fixedip = db.fixed_ip_associate(context, address, instance_uuid,
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network_id=network_id,
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reserved=reserved)
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return cls._from_db_object(context, cls(), db_fixedip)
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@obj_base.remotable_classmethod
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def associate_pool(cls, context, network_id, instance_uuid=None,
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host=None):
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db_fixedip = db.fixed_ip_associate_pool(context, network_id,
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instance_uuid=instance_uuid,
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host=host)
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return cls._from_db_object(context, cls(), db_fixedip)
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@obj_base.remotable_classmethod
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def disassociate_by_address(cls, context, address):
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db.fixed_ip_disassociate(context, address)
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@obj_base.remotable_classmethod
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def _disassociate_all_by_timeout(cls, context, host, time_str):
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time = timeutils.parse_isotime(time_str)
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return db.fixed_ip_disassociate_all_by_timeout(context, host, time)
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@classmethod
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def disassociate_all_by_timeout(cls, context, host, time):
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return cls._disassociate_all_by_timeout(context, host,
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timeutils.isotime(time))
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@obj_base.remotable
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def create(self, context):
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updates = self.obj_get_changes()
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if 'id' in updates:
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raise exception.ObjectActionError(action='create',
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reason='already created')
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if 'address' in updates:
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updates['address'] = str(updates['address'])
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db_fixedip = db.fixed_ip_create(context, updates)
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self._from_db_object(context, self, db_fixedip)
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@obj_base.remotable
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def save(self, context):
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updates = self.obj_get_changes()
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if 'address' in updates:
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raise exception.ObjectActionError(action='save',
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reason='address is not mutable')
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db.fixed_ip_update(context, str(self.address), updates)
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self.obj_reset_changes()
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@obj_base.remotable
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def disassociate(self, context):
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db.fixed_ip_disassociate(context, str(self.address))
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self.instance_uuid = None
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self.instance = None
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self.obj_reset_changes(['instance_uuid', 'instance'])
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class FixedIPList(obj_base.ObjectListBase, obj_base.NovaObject):
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# Version 1.0: Initial version
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VERSION = '1.0'
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fields = {
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'objects': fields.ListOfObjectsField('FixedIP'),
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}
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child_versions = {
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'1.0': '1.0',
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}
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@obj_base.remotable_classmethod
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def get_all(cls, context):
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db_fixedips = db.fixed_ip_get_all(context)
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return obj_base.obj_make_list(context, cls(), FixedIP, db_fixedips)
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@obj_base.remotable_classmethod
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def get_by_instance_uuid(cls, context, instance_uuid):
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db_fixedips = db.fixed_ip_get_by_instance(context, instance_uuid)
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return obj_base.obj_make_list(context, cls(), FixedIP, db_fixedips)
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@obj_base.remotable_classmethod
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def get_by_host(cls, context, host):
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db_fixedips = db.fixed_ip_get_by_host(context, host)
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return obj_base.obj_make_list(context, cls(), FixedIP, db_fixedips)
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@obj_base.remotable_classmethod
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def get_by_virtual_interface_id(cls, context, vif_id):
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db_fixedips = db.fixed_ips_by_virtual_interface(context, vif_id)
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return obj_base.obj_make_list(context, cls(), FixedIP, db_fixedips)
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@obj_base.remotable_classmethod
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def bulk_create(self, context, fixed_ips):
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ips = []
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for fixedip in fixed_ips:
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ip = obj_base.obj_to_primitive(fixedip)
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if 'id' in ip:
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raise exception.ObjectActionError(action='create',
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reason='already created')
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ips.append(ip)
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db.fixed_ip_bulk_create(context, ips)
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