211 lines
7.2 KiB
Python
211 lines
7.2 KiB
Python
# Copyright 2019 NTT DATA.
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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_log import log as logging
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from oslo_utils import uuidutils
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from oslo_versionedobjects import base as ovoo_base
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from sqlalchemy.orm import joinedload
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from tacker.common import exceptions
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from tacker.db import api as db_api
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from tacker.db.db_sqlalchemy import api
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from tacker.db.db_sqlalchemy import models
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from tacker.objects import base
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from tacker.objects import fields
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VNF_SOFTWARE_IMAGE_OPTIONAL_ATTRS = ['metadata']
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LOG = logging.getLogger(__name__)
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def _metadata_add_to_db(context, id, metadata, max_retries=10):
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for attempt in range(max_retries):
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with db_api.context_manager.writer.using(context):
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new_entries = []
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for key, value in metadata.items():
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new_entries.append({"key": key,
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"value": value,
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"image_uuid": id})
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if new_entries:
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context.session.execute(
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models.VnfSoftwareImageMetadata.__table__.insert(None),
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new_entries)
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return metadata
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@db_api.context_manager.writer
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def _vnf_sw_image_create(context, values, metadata=None):
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vnf_sw_image = models.VnfSoftwareImage()
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vnf_sw_image.update(values)
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vnf_sw_image.save(context.session)
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vnf_sw_image._metadata = []
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if metadata:
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_metadata_add_to_db(context, vnf_sw_image.id, metadata)
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context.session.expire(vnf_sw_image, ['_metadata'])
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vnf_sw_image._metadata
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return vnf_sw_image
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@db_api.context_manager.reader
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def _vnf_sw_image_get_by_id(context, id):
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query = api.model_query(context, models.VnfSoftwareImage,
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read_deleted="no").filter_by(id=id).options(joinedload('_metadata'))
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result = query.first()
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if not result:
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raise exceptions.VnfSoftwareImageNotFound(id=id)
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return result
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@base.TackerObjectRegistry.register
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class VnfSoftwareImage(base.TackerObject, base.TackerPersistentObject):
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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.UUIDField(nullable=False),
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'software_image_id': fields.StringField(nullable=False),
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'flavour_uuid': fields.UUIDField(nullable=False),
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'name': fields.StringField(nullable=True),
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'provider': fields.StringField(nullable=True),
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'version': fields.StringField(nullable=True),
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'algorithm': fields.StringField(nullable=True),
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'hash': fields.StringField(nullable=True),
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'container_format': fields.StringField(nullable=True),
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'disk_format': fields.StringField(nullable=True),
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'min_disk': fields.IntegerField(),
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'min_ram': fields.IntegerField(default=0),
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'size': fields.IntegerField(),
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'image_path': fields.StringField(),
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'metadata': fields.DictOfStringsField(nullable=True)
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}
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@staticmethod
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def _from_db_object(context, vnf_sw_image, db_sw_image,
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expected_attrs=None):
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vnf_sw_image._context = context
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for key in vnf_sw_image.fields:
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if key in VNF_SOFTWARE_IMAGE_OPTIONAL_ATTRS:
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continue
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else:
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db_key = key
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setattr(vnf_sw_image, key, db_sw_image[db_key])
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vnf_sw_image._extra_attributes_from_db_object(vnf_sw_image,
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db_sw_image, expected_attrs)
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vnf_sw_image.obj_reset_changes()
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return vnf_sw_image
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@staticmethod
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def _extra_attributes_from_db_object(vnf_sw_image, db_sw_image,
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expected_attrs=None):
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"""Method to help with migration of extra attributes to objects.
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"""
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if expected_attrs is None:
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expected_attrs = []
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if 'metadata' in expected_attrs:
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setattr(vnf_sw_image, 'metadata', db_sw_image['metadetails'])
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def obj_load_attr(self, attrname):
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if not self._context:
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raise exceptions.OrphanedObjectError(method='obj_load_attr',
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objtype=self.obj_name())
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if 'id' not in self:
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raise exceptions.ObjectActionError(
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action='obj_load_attr',
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reason=_('attribute %s not lazy-loadable') % attrname)
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LOG.debug("Lazy-loading '%(attr)s' on %(name)s id %(id)s",
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{'attr': attrname,
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'name': self.obj_name(),
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'id': self.id,
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})
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self._obj_load_attr(attrname)
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def _obj_load_attr(self, attrname):
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"""Internal method for loading attributes from vnf flavour."""
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if attrname in self.fields and attrname != 'id':
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self._load_generic(attrname)
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else:
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# NOTE(nirajsingh): Raise error if non existing field is
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# requested.
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raise exceptions.ObjectActionError(
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action='obj_load_attr',
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reason=_('attribute %s not lazy-loadable') % attrname)
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self.obj_reset_changes([attrname])
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def _load_generic(self, attrname):
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software_image = self.__class__.get_by_id(self._context,
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id=self.id,
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expected_attrs=attrname)
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if attrname not in software_image:
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raise exceptions.ObjectActionError(
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action='obj_load_attr',
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reason=_('loading %s requires recursion') % attrname)
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for field in self.fields:
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if field in software_image and field not in self:
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setattr(self, field, getattr(software_image, field))
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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 exceptions.ObjectActionError(action='create',
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reason=_('already created'))
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updates = self.obj_get_changes()
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if 'id' not in updates:
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updates['id'] = uuidutils.generate_uuid()
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self.id = updates['id']
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metadata = updates.pop('metadata', None)
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db_sw_image = _vnf_sw_image_create(self._context, updates,
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metadata=metadata)
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self._from_db_object(self._context, self, db_sw_image)
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@base.remotable_classmethod
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def get_by_id(cls, context, id, expected_attrs=None):
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db_sw_image = _vnf_sw_image_get_by_id(context, id)
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return cls._from_db_object(context, cls(), db_sw_image,
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expected_attrs=expected_attrs)
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@base.TackerObjectRegistry.register
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class VnfSoftwareImagesList(ovoo_base.ObjectListBase, base.TackerObject):
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VERSION = '1.0'
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fields = {
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'objects': fields.ListOfObjectsField('VnfSoftwareImage')
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}
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