Source code for glance.db.sqlalchemy.metadef_api.resource_type
# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
#
# 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_db import exception as db_exc
from oslo_log import log as logging
import sqlalchemy.exc as sa_exc
import sqlalchemy.orm as sa_orm
from glance.common import exception as exc
import glance.db.sqlalchemy.metadef_api.utils as metadef_utils
from glance.db.sqlalchemy import models_metadef as models
LOG = logging.getLogger(__name__)
[docs]def get(context, name, session):
"""Get a resource type, raise if not found"""
try:
query = session.query(models.MetadefResourceType).filter_by(name=name)
resource_type = query.one()
except sa_orm.exc.NoResultFound:
LOG.debug("No metadata definition resource-type found with name %s",
name)
raise exc.MetadefResourceTypeNotFound(resource_type_name=name)
return resource_type.to_dict()
[docs]def get_all(context, session):
"""Get a list of all resource types"""
query = session.query(models.MetadefResourceType)
resource_types = query.all()
resource_types_list = []
for rt in resource_types:
resource_types_list.append(rt.to_dict())
return resource_types_list
[docs]def create(context, values, session):
"""Create a resource_type, raise if it already exists."""
resource_type = models.MetadefResourceType()
metadef_utils.drop_protected_attrs(models.MetadefResourceType, values)
resource_type.update(values.copy())
try:
resource_type.save(session=session)
except db_exc.DBDuplicateEntry:
LOG.debug("Can not create the metadata definition resource-type. "
"A resource-type with name=%s already exists.",
resource_type.name)
raise exc.MetadefDuplicateResourceType(
resource_type_name=resource_type.name)
return resource_type.to_dict()
[docs]def update(context, values, session):
"""Update a resource type, raise if not found"""
name = values['name']
metadef_utils.drop_protected_attrs(models.MetadefResourceType, values)
db_rec = get(context, name, session)
db_rec.update(values.copy())
db_rec.save(session=session)
return db_rec.to_dict()
[docs]def delete(context, name, session):
"""Delete a resource type or raise if not found or is protected"""
db_rec = get(context, name, session)
if db_rec.protected is True:
LOG.debug("Delete forbidden. Metadata definition resource-type %s is a"
" seeded-system type and can not be deleted.", name)
raise exc.ProtectedMetadefResourceTypeSystemDelete(
resource_type_name=name)
try:
session.delete(db_rec)
session.flush()
except db_exc.DBError as e:
if isinstance(e.inner_exception, sa_exc.IntegrityError):
LOG.debug("Could not delete Metadata definition resource-type %s"
". It still has content", name)
raise exc.MetadefIntegrityError(
record_type='resource-type', record_name=name)
else:
raise
return db_rec.to_dict()