334 lines
12 KiB
Python
334 lines
12 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 oslo_log import log as logging
|
|
from oslo_utils import uuidutils
|
|
from sqlalchemy.orm import contains_eager
|
|
from sqlalchemy.orm import joinedload
|
|
|
|
from nova.compute import utils as compute_utils
|
|
from nova import db
|
|
from nova.db.sqlalchemy import api as db_api
|
|
from nova.db.sqlalchemy import api_models
|
|
from nova import exception
|
|
from nova import objects
|
|
from nova.objects import base
|
|
from nova.objects import fields
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
DEPRECATED_FIELDS = ['deleted', 'deleted_at']
|
|
|
|
|
|
@db_api.api_context_manager.reader
|
|
def _aggregate_get_from_db(context, aggregate_id):
|
|
query = context.session.query(api_models.Aggregate).\
|
|
options(joinedload('_hosts')).\
|
|
options(joinedload('_metadata'))
|
|
query = query.filter(api_models.Aggregate.id == aggregate_id)
|
|
|
|
aggregate = query.first()
|
|
|
|
if not aggregate:
|
|
raise exception.AggregateNotFound(aggregate_id=aggregate_id)
|
|
|
|
return aggregate
|
|
|
|
|
|
@db_api.api_context_manager.reader
|
|
def _aggregate_get_from_db_by_uuid(context, aggregate_uuid):
|
|
query = context.session.query(api_models.Aggregate).\
|
|
options(joinedload('_hosts')).\
|
|
options(joinedload('_metadata'))
|
|
query = query.filter(api_models.Aggregate.uuid == aggregate_uuid)
|
|
|
|
aggregate = query.first()
|
|
|
|
if not aggregate:
|
|
raise exception.AggregateNotFound(aggregate_id=aggregate_uuid)
|
|
|
|
return aggregate
|
|
|
|
|
|
@base.NovaObjectRegistry.register
|
|
class Aggregate(base.NovaPersistentObject, base.NovaObject):
|
|
# Version 1.0: Initial version
|
|
# Version 1.1: String attributes updated to support unicode
|
|
# Version 1.2: Added uuid field
|
|
# Version 1.3: Added get_by_uuid method
|
|
VERSION = '1.3'
|
|
|
|
fields = {
|
|
'id': fields.IntegerField(),
|
|
'uuid': fields.UUIDField(nullable=False),
|
|
'name': fields.StringField(),
|
|
'hosts': fields.ListOfStringsField(nullable=True),
|
|
'metadata': fields.DictOfStringsField(nullable=True),
|
|
}
|
|
|
|
obj_extra_fields = ['availability_zone']
|
|
|
|
@staticmethod
|
|
def _from_db_object(context, aggregate, db_aggregate):
|
|
for key in aggregate.fields:
|
|
if key == 'metadata':
|
|
db_key = 'metadetails'
|
|
elif key == 'uuid':
|
|
continue
|
|
elif key in DEPRECATED_FIELDS and key not in db_aggregate:
|
|
continue
|
|
else:
|
|
db_key = key
|
|
setattr(aggregate, key, db_aggregate[db_key])
|
|
|
|
# NOTE(danms): Remove this conditional load (and remove uuid
|
|
# special cases above) once we're in Newton and have enforced
|
|
# that all UUIDs in the database are not NULL.
|
|
if db_aggregate.get('uuid'):
|
|
aggregate.uuid = db_aggregate['uuid']
|
|
|
|
# NOTE: This can be removed when we remove compatibility with
|
|
# the old aggregate model.
|
|
if any(f not in db_aggregate for f in DEPRECATED_FIELDS):
|
|
aggregate.deleted_at = None
|
|
aggregate.deleted = False
|
|
|
|
aggregate._context = context
|
|
aggregate.obj_reset_changes()
|
|
|
|
# NOTE(danms): This needs to come after obj_reset_changes() to make
|
|
# sure we only save the uuid, if we generate one.
|
|
# FIXME(danms): Remove this in Newton once we have enforced that
|
|
# all aggregates have uuids set in the database.
|
|
if 'uuid' not in aggregate:
|
|
aggregate.uuid = uuidutils.generate_uuid()
|
|
LOG.debug('Generating UUID %(uuid)s for aggregate %(agg)i',
|
|
dict(uuid=aggregate.uuid, agg=aggregate.id))
|
|
aggregate.save()
|
|
|
|
return aggregate
|
|
|
|
def _assert_no_hosts(self, action):
|
|
if 'hosts' in self.obj_what_changed():
|
|
raise exception.ObjectActionError(
|
|
action=action,
|
|
reason='hosts updated inline')
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_id(cls, context, aggregate_id):
|
|
try:
|
|
db_aggregate = _aggregate_get_from_db(context, aggregate_id)
|
|
except exception.AggregateNotFound:
|
|
db_aggregate = db.aggregate_get(context, aggregate_id)
|
|
return cls._from_db_object(context, cls(), db_aggregate)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_uuid(cls, context, aggregate_uuid):
|
|
try:
|
|
db_aggregate = _aggregate_get_from_db_by_uuid(context,
|
|
aggregate_uuid)
|
|
except exception.AggregateNotFound:
|
|
db_aggregate = db.aggregate_get_by_uuid(context, aggregate_uuid)
|
|
return cls._from_db_object(context, cls(), db_aggregate)
|
|
|
|
@base.remotable
|
|
def create(self):
|
|
if self.obj_attr_is_set('id'):
|
|
raise exception.ObjectActionError(action='create',
|
|
reason='already created')
|
|
self._assert_no_hosts('create')
|
|
updates = self.obj_get_changes()
|
|
payload = dict(updates)
|
|
if 'metadata' in updates:
|
|
# NOTE(danms): For some reason the notification format is weird
|
|
payload['meta_data'] = payload.pop('metadata')
|
|
if 'uuid' not in updates:
|
|
updates['uuid'] = uuidutils.generate_uuid()
|
|
LOG.debug('Generated uuid %(uuid)s for aggregate',
|
|
dict(uuid=updates['uuid']))
|
|
compute_utils.notify_about_aggregate_update(self._context,
|
|
"create.start",
|
|
payload)
|
|
metadata = updates.pop('metadata', None)
|
|
db_aggregate = db.aggregate_create(self._context, updates,
|
|
metadata=metadata)
|
|
self._from_db_object(self._context, self, db_aggregate)
|
|
payload['aggregate_id'] = self.id
|
|
compute_utils.notify_about_aggregate_update(self._context,
|
|
"create.end",
|
|
payload)
|
|
|
|
@base.remotable
|
|
def save(self):
|
|
self._assert_no_hosts('save')
|
|
updates = self.obj_get_changes()
|
|
|
|
payload = {'aggregate_id': self.id}
|
|
if 'metadata' in updates:
|
|
payload['meta_data'] = updates['metadata']
|
|
compute_utils.notify_about_aggregate_update(self._context,
|
|
"updateprop.start",
|
|
payload)
|
|
updates.pop('id', None)
|
|
db_aggregate = db.aggregate_update(self._context, self.id, updates)
|
|
compute_utils.notify_about_aggregate_update(self._context,
|
|
"updateprop.end",
|
|
payload)
|
|
self._from_db_object(self._context, self, db_aggregate)
|
|
|
|
@base.remotable
|
|
def update_metadata(self, updates):
|
|
payload = {'aggregate_id': self.id,
|
|
'meta_data': updates}
|
|
compute_utils.notify_about_aggregate_update(self._context,
|
|
"updatemetadata.start",
|
|
payload)
|
|
to_add = {}
|
|
for key, value in updates.items():
|
|
if value is None:
|
|
try:
|
|
db.aggregate_metadata_delete(self._context, self.id, key)
|
|
except exception.AggregateMetadataNotFound:
|
|
pass
|
|
try:
|
|
self.metadata.pop(key)
|
|
except KeyError:
|
|
pass
|
|
else:
|
|
to_add[key] = value
|
|
self.metadata[key] = value
|
|
db.aggregate_metadata_add(self._context, self.id, to_add)
|
|
compute_utils.notify_about_aggregate_update(self._context,
|
|
"updatemetadata.end",
|
|
payload)
|
|
self.obj_reset_changes(fields=['metadata'])
|
|
|
|
@base.remotable
|
|
def destroy(self):
|
|
db.aggregate_delete(self._context, self.id)
|
|
|
|
@base.remotable
|
|
def add_host(self, host):
|
|
db.aggregate_host_add(self._context, self.id, host)
|
|
if self.hosts is None:
|
|
self.hosts = []
|
|
self.hosts.append(host)
|
|
self.obj_reset_changes(fields=['hosts'])
|
|
|
|
@base.remotable
|
|
def delete_host(self, host):
|
|
db.aggregate_host_delete(self._context, self.id, host)
|
|
self.hosts.remove(host)
|
|
self.obj_reset_changes(fields=['hosts'])
|
|
|
|
@property
|
|
def availability_zone(self):
|
|
return self.metadata.get('availability_zone', None)
|
|
|
|
|
|
@db_api.api_context_manager.reader
|
|
def _get_all_from_db(context):
|
|
query = context.session.query(api_models.Aggregate).\
|
|
options(joinedload('_hosts')).\
|
|
options(joinedload('_metadata'))
|
|
|
|
return query.all()
|
|
|
|
|
|
@db_api.api_context_manager.reader
|
|
def _get_by_host_from_db(context, host, key=None):
|
|
query = context.session.query(api_models.Aggregate).\
|
|
options(joinedload('_hosts')).\
|
|
options(joinedload('_metadata'))
|
|
query = query.join('_hosts')
|
|
query = query.filter(api_models.AggregateHost.host == host)
|
|
|
|
if key:
|
|
query = query.join("_metadata").filter(
|
|
api_models.AggregateMetadata.key == key)
|
|
|
|
return query.all()
|
|
|
|
|
|
@db_api.api_context_manager.reader
|
|
def _get_by_metadata_key_from_db(context, key):
|
|
query = context.session.query(api_models.Aggregate)
|
|
query = query.join("_metadata")
|
|
query = query.filter(api_models.AggregateMetadata.key == key)
|
|
query = query.options(contains_eager("_metadata"))
|
|
query = query.options(joinedload("_hosts"))
|
|
|
|
return query.all()
|
|
|
|
|
|
@base.NovaObjectRegistry.register
|
|
class AggregateList(base.ObjectListBase, base.NovaObject):
|
|
# Version 1.0: Initial version
|
|
# Version 1.1: Added key argument to get_by_host()
|
|
# Aggregate <= version 1.1
|
|
# Version 1.2: Added get_by_metadata_key
|
|
VERSION = '1.2'
|
|
|
|
fields = {
|
|
'objects': fields.ListOfObjectsField('Aggregate'),
|
|
}
|
|
|
|
# NOTE(mdoff): Calls to this can be removed when we remove
|
|
# compatibility with the old aggregate model.
|
|
@staticmethod
|
|
def _fill_deprecated(db_aggregate):
|
|
db_aggregate['deleted_at'] = None
|
|
db_aggregate['deleted'] = False
|
|
return db_aggregate
|
|
|
|
@classmethod
|
|
def _filter_db_aggregates(cls, db_aggregates, hosts):
|
|
if not isinstance(hosts, set):
|
|
hosts = set(hosts)
|
|
filtered_aggregates = []
|
|
for db_aggregate in db_aggregates:
|
|
for host in db_aggregate['hosts']:
|
|
if host in hosts:
|
|
filtered_aggregates.append(db_aggregate)
|
|
break
|
|
return filtered_aggregates
|
|
|
|
@base.remotable_classmethod
|
|
def get_all(cls, context):
|
|
api_db_aggregates = [cls._fill_deprecated(agg) for agg in
|
|
_get_all_from_db(context)]
|
|
db_aggregates = db.aggregate_get_all(context)
|
|
return base.obj_make_list(context, cls(context), objects.Aggregate,
|
|
db_aggregates + api_db_aggregates)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_host(cls, context, host, key=None):
|
|
api_db_aggregates = [cls._fill_deprecated(agg) for agg in
|
|
_get_by_host_from_db(context, host, key=key)]
|
|
db_aggregates = db.aggregate_get_by_host(context, host, key=key)
|
|
return base.obj_make_list(context, cls(context), objects.Aggregate,
|
|
db_aggregates + api_db_aggregates)
|
|
|
|
@base.remotable_classmethod
|
|
def get_by_metadata_key(cls, context, key, hosts=None):
|
|
api_db_aggregates = [cls._fill_deprecated(agg) for agg in
|
|
_get_by_metadata_key_from_db(context, key=key)]
|
|
db_aggregates = db.aggregate_get_by_metadata_key(context, key=key)
|
|
|
|
all_aggregates = db_aggregates + api_db_aggregates
|
|
if hosts is not None:
|
|
all_aggregates = cls._filter_db_aggregates(all_aggregates, hosts)
|
|
return base.obj_make_list(context, cls(context), objects.Aggregate,
|
|
all_aggregates)
|