182 lines
7.1 KiB
Python
182 lines
7.1 KiB
Python
# Copyright 2013 IBM Corp.
|
|
#
|
|
# 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 nova import availability_zones
|
|
from nova import db
|
|
from nova import exception
|
|
from nova import objects
|
|
from nova.objects import base
|
|
from nova.objects import fields
|
|
from nova.openstack.common import log as logging
|
|
from nova import utils
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class Service(base.NovaPersistentObject, base.NovaObject):
|
|
# Version 1.0: Initial version
|
|
# Version 1.1: Added compute_node nested object
|
|
# Version 1.2: String attributes updated to support unicode
|
|
# Version 1.3: ComputeNode version 1.5
|
|
# Version 1.4: Added use_slave to get_by_compute_host
|
|
# Version 1.5: ComputeNode version 1.6
|
|
VERSION = '1.5'
|
|
|
|
fields = {
|
|
'id': fields.IntegerField(read_only=True),
|
|
'host': fields.StringField(nullable=True),
|
|
'binary': fields.StringField(nullable=True),
|
|
'topic': fields.StringField(nullable=True),
|
|
'report_count': fields.IntegerField(),
|
|
'disabled': fields.BooleanField(),
|
|
'disabled_reason': fields.StringField(nullable=True),
|
|
'availability_zone': fields.StringField(nullable=True),
|
|
'compute_node': fields.ObjectField('ComputeNode'),
|
|
}
|
|
|
|
def obj_make_compatible(self, primitive, target_version):
|
|
target_version = utils.convert_version_to_tuple(target_version)
|
|
if target_version < (1, 3) and 'compute_node' in primitive:
|
|
self.compute_node.obj_make_compatible(
|
|
primitive['compute_node']['nova_object.data'], '1.4')
|
|
primitive['compute_node']['nova_object.version'] = '1.4'
|
|
elif target_version < (1, 5) and 'compute_node' in primitive:
|
|
self.compute_node.obj_make_compatible(
|
|
primitive['compute_node']['nova_object.data'], '1.5')
|
|
primitive['compute_node']['nova_object.version'] = '1.5'
|
|
|
|
@staticmethod
|
|
def _do_compute_node(context, service, db_service):
|
|
try:
|
|
# NOTE(danms): The service.compute_node relationship returns
|
|
# a list, which should only have one item in it. If it's empty
|
|
# or otherwise malformed, ignore it.
|
|
db_compute = db_service['compute_node'][0]
|
|
except Exception:
|
|
return
|
|
service.compute_node = objects.ComputeNode._from_db_object(
|
|
context, objects.ComputeNode(), db_compute)
|
|
|
|
@staticmethod
|
|
def _from_db_object(context, service, db_service):
|
|
allow_missing = ('availability_zone',)
|
|
for key in service.fields:
|
|
if key in allow_missing and key not in db_service:
|
|
continue
|
|
if key == 'compute_node':
|
|
service._do_compute_node(context, service, db_service)
|
|
else:
|
|
service[key] = db_service[key]
|
|
service._context = context
|
|
service.obj_reset_changes()
|
|
return service
|
|
|
|
def obj_load_attr(self, attrname):
|
|
if not self._context:
|
|
raise exception.OrphanedObjectError(method='obj_load_attr',
|
|
objtype=self.obj_name())
|
|
LOG.debug("Lazy-loading `%(attr)s' on %(name)s id %(id)s",
|
|
{'attr': attrname,
|
|
'name': self.obj_name(),
|
|
'id': self.id,
|
|
})
|
|
if attrname != 'compute_node':
|
|
raise exception.ObjectActionError(
|
|
action='obj_load_attr',
|
|
reason='attribute %s not lazy-loadable' % attrname)
|
|
self.compute_node = objects.ComputeNode.get_by_service_id(
|
|
self._context, self.id)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_id(cls, context, service_id):
|
|
db_service = db.service_get(context, service_id)
|
|
return cls._from_db_object(context, cls(), db_service)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_host_and_topic(cls, context, host, topic):
|
|
db_service = db.service_get_by_host_and_topic(context, host, topic)
|
|
return cls._from_db_object(context, cls(), db_service)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_compute_host(cls, context, host, use_slave=False):
|
|
db_service = db.service_get_by_compute_host(context, host)
|
|
return cls._from_db_object(context, cls(), db_service)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_args(cls, context, host, binary):
|
|
db_service = db.service_get_by_args(context, host, binary)
|
|
return cls._from_db_object(context, cls(), db_service)
|
|
|
|
@base.remotable
|
|
def create(self, context):
|
|
if self.obj_attr_is_set('id'):
|
|
raise exception.ObjectActionError(action='create',
|
|
reason='already created')
|
|
updates = self.obj_get_changes()
|
|
db_service = db.service_create(context, updates)
|
|
self._from_db_object(context, self, db_service)
|
|
|
|
@base.remotable
|
|
def save(self, context):
|
|
updates = self.obj_get_changes()
|
|
updates.pop('id', None)
|
|
db_service = db.service_update(context, self.id, updates)
|
|
self._from_db_object(context, self, db_service)
|
|
|
|
@base.remotable
|
|
def destroy(self, context):
|
|
db.service_destroy(context, self.id)
|
|
|
|
|
|
class ServiceList(base.ObjectListBase, base.NovaObject):
|
|
# Version 1.0: Initial version
|
|
# Service <= version 1.2
|
|
# Version 1.1 Service version 1.3
|
|
# Version 1.2: Service version 1.4
|
|
# Version 1.3: Service version 1.5
|
|
VERSION = '1.3'
|
|
|
|
fields = {
|
|
'objects': fields.ListOfObjectsField('Service'),
|
|
}
|
|
child_versions = {
|
|
'1.0': '1.2',
|
|
# NOTE(danms): Service was at 1.2 before we added this
|
|
'1.1': '1.3',
|
|
'1.2': '1.4',
|
|
'1.3': '1.5'
|
|
}
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_topic(cls, context, topic):
|
|
db_services = db.service_get_all_by_topic(context, topic)
|
|
return base.obj_make_list(context, cls(context), objects.Service,
|
|
db_services)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_host(cls, context, host):
|
|
db_services = db.service_get_all_by_host(context, host)
|
|
return base.obj_make_list(context, cls(context), objects.Service,
|
|
db_services)
|
|
|
|
@base.remotable_classmethod
|
|
def get_all(cls, context, disabled=None, set_zones=False):
|
|
db_services = db.service_get_all(context, disabled=disabled)
|
|
if set_zones:
|
|
db_services = availability_zones.set_availability_zones(
|
|
context, db_services)
|
|
return base.obj_make_list(context, cls(context), objects.Service,
|
|
db_services)
|