Stephen Finucane
1bf45c4720
This continues on from I81fec10535034f3a81d46713a6eda813f90561cf and removes all other references to 'instance_type' where it's possible to do so. The only things left are DB columns, o.vo fields, some unversioned objects, and RPC API methods. If we want to remove these, we can but it's a lot more work. Change-Id: I264d6df1809d7283415e69a66a9153829b8df537 Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
281 lines
12 KiB
Python
281 lines
12 KiB
Python
# Copyright 2013 IBM Corp.
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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 oslo_db import exception as db_exc
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from oslo_utils import uuidutils
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from oslo_utils import versionutils
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from nova.db import api as db
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from nova import exception
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from nova.i18n import _
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from nova import objects
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from nova.objects import base
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from nova.objects import fields
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def determine_migration_type(migration):
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if migration['old_instance_type_id'] != migration['new_instance_type_id']:
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return 'resize'
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else:
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return 'migration'
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# TODO(berrange): Remove NovaObjectDictCompat
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@base.NovaObjectRegistry.register
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class Migration(base.NovaPersistentObject, base.NovaObject,
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base.NovaObjectDictCompat):
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# Version 1.0: Initial version
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# Version 1.1: String attributes updated to support unicode
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# Version 1.2: Added migration_type and hidden
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# Version 1.3: Added get_by_id_and_instance()
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# Version 1.4: Added migration progress detail
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# Version 1.5: Added uuid
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# Version 1.6: Added cross_cell_move and get_by_uuid().
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# Version 1.7: Added user_id and project_id
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VERSION = '1.7'
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fields = {
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'id': fields.IntegerField(),
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'uuid': fields.UUIDField(),
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'source_compute': fields.StringField(nullable=True), # source hostname
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'dest_compute': fields.StringField(nullable=True), # dest hostname
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'source_node': fields.StringField(nullable=True), # source nodename
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'dest_node': fields.StringField(nullable=True), # dest nodename
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'dest_host': fields.StringField(nullable=True), # dest host IP
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# TODO(stephenfin): Rename these to old_flavor_id, new_flavor_id in
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# v2.0
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'old_instance_type_id': fields.IntegerField(nullable=True),
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'new_instance_type_id': fields.IntegerField(nullable=True),
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'instance_uuid': fields.StringField(nullable=True),
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'status': fields.StringField(nullable=True),
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'migration_type': fields.MigrationTypeField(nullable=False),
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'hidden': fields.BooleanField(nullable=False, default=False),
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'memory_total': fields.IntegerField(nullable=True),
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'memory_processed': fields.IntegerField(nullable=True),
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'memory_remaining': fields.IntegerField(nullable=True),
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'disk_total': fields.IntegerField(nullable=True),
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'disk_processed': fields.IntegerField(nullable=True),
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'disk_remaining': fields.IntegerField(nullable=True),
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'cross_cell_move': fields.BooleanField(default=False),
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# request context user id
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'user_id': fields.StringField(nullable=True),
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# request context project id
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'project_id': fields.StringField(nullable=True),
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}
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@staticmethod
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def _from_db_object(context, migration, db_migration):
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for key in migration.fields:
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value = db_migration[key]
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if key == 'migration_type' and value is None:
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value = determine_migration_type(db_migration)
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elif key == 'uuid' and value is None:
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continue
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migration[key] = value
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migration._context = context
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migration.obj_reset_changes()
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migration._ensure_uuid()
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return migration
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def obj_make_compatible(self, primitive, target_version):
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super(Migration, self).obj_make_compatible(primitive, target_version)
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target_version = versionutils.convert_version_to_tuple(target_version)
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if target_version < (1, 2):
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if 'migration_type' in primitive:
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del primitive['migration_type']
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del primitive['hidden']
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if target_version < (1, 4):
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if 'memory_total' in primitive:
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del primitive['memory_total']
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del primitive['memory_processed']
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del primitive['memory_remaining']
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del primitive['disk_total']
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del primitive['disk_processed']
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del primitive['disk_remaining']
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if target_version < (1, 5):
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if 'uuid' in primitive:
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del primitive['uuid']
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if target_version < (1, 6) and 'cross_cell_move' in primitive:
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del primitive['cross_cell_move']
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if target_version < (1, 7):
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if 'user_id' in primitive:
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del primitive['user_id']
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if 'project_id' in primitive:
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del primitive['project_id']
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def obj_load_attr(self, attrname):
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if attrname == 'migration_type':
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# NOTE(danms): The only reason we'd need to load this is if
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# some older node sent us one. So, guess the type.
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self.migration_type = determine_migration_type(self)
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elif attrname in ['hidden', 'cross_cell_move']:
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self.obj_set_defaults(attrname)
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else:
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super(Migration, self).obj_load_attr(attrname)
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def _ensure_uuid(self):
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if 'uuid' in self:
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return
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self.uuid = uuidutils.generate_uuid()
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try:
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self.save()
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except db_exc.DBDuplicateEntry:
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# NOTE(danms) We raced to generate a uuid for this,
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# so fetch the winner and use that uuid
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fresh = self.__class__.get_by_id(self.context, self.id)
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self.uuid = fresh.uuid
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@base.remotable_classmethod
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def get_by_uuid(cls, context, migration_uuid):
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db_migration = db.migration_get_by_uuid(context, migration_uuid)
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return cls._from_db_object(context, cls(), db_migration)
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@base.remotable_classmethod
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def get_by_id(cls, context, migration_id):
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db_migration = db.migration_get(context, migration_id)
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return cls._from_db_object(context, cls(), db_migration)
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@base.remotable_classmethod
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def get_by_id_and_instance(cls, context, migration_id, instance_uuid):
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db_migration = db.migration_get_by_id_and_instance(
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context, migration_id, instance_uuid)
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return cls._from_db_object(context, cls(), db_migration)
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@base.remotable_classmethod
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def get_by_instance_and_status(cls, context, instance_uuid, status):
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db_migration = db.migration_get_by_instance_and_status(
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context, instance_uuid, status)
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return cls._from_db_object(context, cls(), db_migration)
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@base.remotable
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def create(self):
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if self.obj_attr_is_set('id'):
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raise exception.ObjectActionError(action='create',
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reason='already created')
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if 'uuid' not in self:
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self.uuid = uuidutils.generate_uuid()
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# Record who is initiating the migration which is
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# not necessarily the owner of the instance.
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if 'user_id' not in self:
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self.user_id = self._context.user_id
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if 'project_id' not in self:
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self.project_id = self._context.project_id
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updates = self.obj_get_changes()
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if 'migration_type' not in updates:
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raise exception.ObjectActionError(
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action="create",
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reason=_("cannot create a Migration object without a "
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"migration_type set"))
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db_migration = db.migration_create(self._context, updates)
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self._from_db_object(self._context, self, db_migration)
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@base.remotable
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def save(self):
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updates = self.obj_get_changes()
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updates.pop('id', None)
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db_migration = db.migration_update(self._context, self.id, updates)
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self._from_db_object(self._context, self, db_migration)
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self.obj_reset_changes()
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@property
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def instance(self):
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if not hasattr(self, '_cached_instance'):
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self._cached_instance = objects.Instance.get_by_uuid(
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self._context, self.instance_uuid,
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expected_attrs=['migration_context', 'flavor'])
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return self._cached_instance
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@instance.setter
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def instance(self, instance):
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self._cached_instance = instance
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def is_same_host(self):
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return self.source_compute == self.dest_compute
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@property
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def is_live_migration(self):
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return self.migration_type == fields.MigrationType.LIVE_MIGRATION
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@property
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def is_resize(self):
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return self.migration_type == fields.MigrationType.RESIZE
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@base.NovaObjectRegistry.register
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class MigrationList(base.ObjectListBase, base.NovaObject):
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# Version 1.0: Initial version
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# Migration <= 1.1
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# Version 1.1: Added use_slave to get_unconfirmed_by_dest_compute
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# Version 1.2: Migration version 1.2
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# Version 1.3: Added a new function to get in progress migrations
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# for an instance.
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# Version 1.4: Added sort_keys, sort_dirs, limit, marker kwargs to
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# get_by_filters for migrations pagination support.
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# Version 1.5: Added a new function to get in progress migrations
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# and error migrations for a given host + node.
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VERSION = '1.5'
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fields = {
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'objects': fields.ListOfObjectsField('Migration'),
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}
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@staticmethod
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@db.select_db_reader_mode
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def _db_migration_get_unconfirmed_by_dest_compute(
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context, confirm_window, dest_compute, use_slave=False):
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return db.migration_get_unconfirmed_by_dest_compute(
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context, confirm_window, dest_compute)
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@base.remotable_classmethod
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def get_unconfirmed_by_dest_compute(cls, context, confirm_window,
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dest_compute, use_slave=False):
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db_migrations = cls._db_migration_get_unconfirmed_by_dest_compute(
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context, confirm_window, dest_compute, use_slave=use_slave)
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return base.obj_make_list(context, cls(context), objects.Migration,
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db_migrations)
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@base.remotable_classmethod
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def get_in_progress_by_host_and_node(cls, context, host, node):
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db_migrations = db.migration_get_in_progress_by_host_and_node(
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context, host, node)
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return base.obj_make_list(context, cls(context), objects.Migration,
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db_migrations)
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@base.remotable_classmethod
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def get_by_filters(cls, context, filters, sort_keys=None, sort_dirs=None,
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limit=None, marker=None):
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db_migrations = db.migration_get_all_by_filters(
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context, filters, sort_keys=sort_keys, sort_dirs=sort_dirs,
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limit=limit, marker=marker)
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return base.obj_make_list(context, cls(context), objects.Migration,
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db_migrations)
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@base.remotable_classmethod
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def get_in_progress_by_instance(cls, context, instance_uuid,
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migration_type=None):
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db_migrations = db.migration_get_in_progress_by_instance(
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context, instance_uuid, migration_type)
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return base.obj_make_list(context, cls(context), objects.Migration,
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db_migrations)
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@base.remotable_classmethod
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def get_in_progress_and_error(cls, context, host, node):
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db_migrations = \
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db.migration_get_in_progress_and_error_by_host_and_node(
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context, host, node)
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return base.obj_make_list(context, cls(context), objects.Migration,
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db_migrations)
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