273 lines
11 KiB
Python
273 lines
11 KiB
Python
# Copyright 2013 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 import objects
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from nova.objects import base
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from nova.objects import fields
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OPTIONAL_FIELDS = ['extra_specs', 'projects']
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# TODO(berrange): Remove NovaObjectDictCompat
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class Flavor(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: Added save_projects(), save_extra_specs(), removed
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# remoteable from save()
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VERSION = '1.1'
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fields = {
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'id': fields.IntegerField(),
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'name': fields.StringField(nullable=True),
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'memory_mb': fields.IntegerField(),
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'vcpus': fields.IntegerField(),
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'root_gb': fields.IntegerField(),
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'ephemeral_gb': fields.IntegerField(),
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'flavorid': fields.StringField(),
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'swap': fields.IntegerField(),
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'rxtx_factor': fields.FloatField(nullable=True, default=1.0),
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'vcpu_weight': fields.IntegerField(nullable=True),
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'disabled': fields.BooleanField(),
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'is_public': fields.BooleanField(),
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'extra_specs': fields.DictOfStringsField(),
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'projects': fields.ListOfStringsField(),
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}
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def __init__(self, *args, **kwargs):
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super(Flavor, self).__init__(*args, **kwargs)
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self._orig_extra_specs = {}
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self._orig_projects = []
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@staticmethod
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def _from_db_object(context, flavor, db_flavor, expected_attrs=None):
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if expected_attrs is None:
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expected_attrs = []
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flavor._context = context
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for name, field in flavor.fields.items():
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if name in OPTIONAL_FIELDS:
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continue
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value = db_flavor[name]
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if isinstance(field, fields.IntegerField):
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value = value if value is not None else 0
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flavor[name] = value
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if 'extra_specs' in expected_attrs:
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flavor.extra_specs = db_flavor['extra_specs']
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if 'projects' in expected_attrs:
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flavor._load_projects()
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flavor.obj_reset_changes()
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return flavor
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@base.remotable
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def _load_projects(self):
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self.projects = [x['project_id'] for x in
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db.flavor_access_get_by_flavor_id(self._context,
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self.flavorid)]
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self.obj_reset_changes(['projects'])
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def obj_load_attr(self, attrname):
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# NOTE(danms): Only projects could be lazy-loaded right now
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if attrname != 'projects':
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raise exception.ObjectActionError(
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action='obj_load_attr', reason='unable to load %s' % attrname)
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self._load_projects()
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def obj_reset_changes(self, fields=None):
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super(Flavor, self).obj_reset_changes(fields=fields)
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if fields is None or 'extra_specs' in fields:
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self._orig_extra_specs = (dict(self.extra_specs)
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if self.obj_attr_is_set('extra_specs')
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else {})
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if fields is None or 'projects' in fields:
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self._orig_projects = (list(self.projects)
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if self.obj_attr_is_set('projects')
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else [])
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def obj_what_changed(self):
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changes = super(Flavor, self).obj_what_changed()
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if ('extra_specs' in self and
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self.extra_specs != self._orig_extra_specs):
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changes.add('extra_specs')
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if 'projects' in self and self.projects != self._orig_projects:
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changes.add('projects')
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return changes
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@classmethod
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def _obj_from_primitive(cls, context, objver, primitive):
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self = super(Flavor, cls)._obj_from_primitive(context, objver,
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primitive)
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changes = self.obj_what_changed()
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if 'extra_specs' not in changes:
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# This call left extra_specs "clean" so update our tracker
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self._orig_extra_specs = (dict(self.extra_specs)
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if self.obj_attr_is_set('extra_specs')
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else {})
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if 'projects' not in changes:
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# This call left projects "clean" so update our tracker
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self._orig_projects = (list(self.projects)
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if self.obj_attr_is_set('projects')
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else [])
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return self
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@base.remotable_classmethod
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def get_by_id(cls, context, id):
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db_flavor = db.flavor_get(context, id)
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return cls._from_db_object(context, cls(context), db_flavor,
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expected_attrs=['extra_specs'])
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@base.remotable_classmethod
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def get_by_name(cls, context, name):
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db_flavor = db.flavor_get_by_name(context, name)
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return cls._from_db_object(context, cls(context), db_flavor,
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expected_attrs=['extra_specs'])
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@base.remotable_classmethod
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def get_by_flavor_id(cls, context, flavor_id, read_deleted=None):
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db_flavor = db.flavor_get_by_flavor_id(context, flavor_id,
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read_deleted)
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return cls._from_db_object(context, cls(context), db_flavor,
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expected_attrs=['extra_specs'])
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@base.remotable
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def add_access(self, project_id):
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if 'projects' in self.obj_what_changed():
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raise exception.ObjectActionError(action='add_access',
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reason='projects modified')
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db.flavor_access_add(self._context, self.flavorid, project_id)
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self._load_projects()
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@base.remotable
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def remove_access(self, project_id):
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if 'projects' in self.obj_what_changed():
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raise exception.ObjectActionError(action='remove_access',
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reason='projects modified')
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db.flavor_access_remove(self._context, self.flavorid, project_id)
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self._load_projects()
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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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updates = self.obj_get_changes()
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expected_attrs = []
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for attr in OPTIONAL_FIELDS:
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if attr in updates:
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expected_attrs.append(attr)
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projects = updates.pop('projects', [])
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db_flavor = db.flavor_create(self._context, updates, projects=projects)
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self._from_db_object(self._context, self, db_flavor,
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expected_attrs=expected_attrs)
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@base.remotable
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def save_projects(self, to_add=None, to_delete=None):
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"""Add or delete projects.
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:param:to_add: A list of projects to add
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:param:to_delete: A list of projects to remove
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"""
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to_add = to_add if to_add is not None else []
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to_delete = to_delete if to_delete is not None else []
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for project_id in to_add:
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db.flavor_access_add(self._context, self.flavorid, project_id)
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for project_id in to_delete:
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db.flavor_access_remove(self._context, self.flavorid, project_id)
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self.obj_reset_changes(['projects'])
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@base.remotable
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def save_extra_specs(self, to_add=None, to_delete=None):
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"""Add or delete extra_specs.
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:param:to_add: A dict of new keys to add/update
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:param:to_delete: A list of keys to remove
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"""
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to_add = to_add if to_add is not None else []
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to_delete = to_delete if to_delete is not None else []
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if to_add:
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db.flavor_extra_specs_update_or_create(self._context,
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self.flavorid,
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to_add)
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for key in to_delete:
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db.flavor_extra_specs_delete(self._context, self.flavorid, key)
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self.obj_reset_changes(['extra_specs'])
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def save(self):
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updates = self.obj_get_changes()
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projects = updates.pop('projects', None)
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extra_specs = updates.pop('extra_specs', None)
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if updates:
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raise exception.ObjectActionError(
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action='save', reason='read-only fields were changed')
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if extra_specs is not None:
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deleted_keys = (set(self._orig_extra_specs.keys()) -
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set(extra_specs.keys()))
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added_keys = self.extra_specs
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else:
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added_keys = deleted_keys = None
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if projects is not None:
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deleted_projects = set(self._orig_projects) - set(projects)
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added_projects = set(projects) - set(self._orig_projects)
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else:
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added_projects = deleted_projects = None
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# NOTE(danms): The first remotable method we call will reset
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# our of the original values for projects and extra_specs. Thus,
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# we collect the added/deleted lists for both above and /then/
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# call these methods to update them.
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if added_keys or deleted_keys:
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self.save_extra_specs(self.extra_specs, deleted_keys)
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if added_projects or deleted_projects:
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self.save_projects(added_projects, deleted_projects)
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@base.remotable
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def destroy(self):
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db.flavor_destroy(self._context, self.name)
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class FlavorList(base.ObjectListBase, base.NovaObject):
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VERSION = '1.1'
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fields = {
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'objects': fields.ListOfObjectsField('Flavor'),
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}
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child_versions = {
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'1.0': '1.0',
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'1.1': '1.1',
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}
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@base.remotable_classmethod
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def get_all(cls, context, inactive=False, filters=None,
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sort_key='flavorid', sort_dir='asc', limit=None, marker=None):
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db_flavors = db.flavor_get_all(context, inactive=inactive,
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filters=filters, sort_key=sort_key,
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sort_dir=sort_dir, limit=limit,
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marker=marker)
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return base.obj_make_list(context, cls(context), objects.Flavor,
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db_flavors, expected_attrs=['extra_specs'])
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