101 lines
3.7 KiB
Python
101 lines
3.7 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
# Copyright 2013 OpenStack Foundation.
|
|
# All Rights Reserved.
|
|
#
|
|
# 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.
|
|
#
|
|
# @author: Salvatore Orlando, VMware
|
|
#
|
|
|
|
import sqlalchemy as sa
|
|
|
|
from neutron.db import api as db
|
|
from neutron.db import model_base
|
|
from neutron.db import models_v2
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.services import provider_configuration as pconf
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class ProviderResourceAssociation(model_base.BASEV2):
|
|
provider_name = sa.Column(sa.String(255),
|
|
nullable=False, primary_key=True)
|
|
# should be manualy deleted on resource deletion
|
|
resource_id = sa.Column(sa.String(36), nullable=False, primary_key=True,
|
|
unique=True)
|
|
|
|
|
|
class ServiceTypeManager(object):
|
|
"""Manage service type objects in Neutron."""
|
|
|
|
_instance = None
|
|
|
|
@classmethod
|
|
def get_instance(cls):
|
|
if cls._instance is None:
|
|
cls._instance = cls()
|
|
return cls._instance
|
|
|
|
def __init__(self):
|
|
self._initialize_db()
|
|
self._load_conf()
|
|
|
|
def _initialize_db(self):
|
|
db.configure_db()
|
|
db.register_models(models_v2.model_base.BASEV2)
|
|
|
|
def _load_conf(self):
|
|
self.conf = pconf.ProviderConfiguration(
|
|
pconf.parse_service_provider_opt())
|
|
|
|
def get_service_providers(self, context, filters=None, fields=None):
|
|
return self.conf.get_service_providers(filters, fields)
|
|
|
|
def get_default_service_provider(self, context, service_type):
|
|
"""Return the default provider for a given service type."""
|
|
filters = {'service_type': [service_type],
|
|
'default': [True]}
|
|
providers = self.get_service_providers(context, filters=filters)
|
|
# By construction we expect at most a single item in provider
|
|
if not providers:
|
|
raise pconf.DefaultServiceProviderNotFound(
|
|
service_type=service_type
|
|
)
|
|
return providers[0]
|
|
|
|
def add_resource_association(self, context, service_type, provider_name,
|
|
resource_id):
|
|
r = self.conf.get_service_providers(
|
|
filters={'service_type': [service_type], 'name': [provider_name]})
|
|
if not r:
|
|
raise pconf.ServiceProviderNotFound(provider=provider_name,
|
|
service_type=service_type)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# we don't actually need service type for association.
|
|
# resource_id is unique and belongs to specific service
|
|
# which knows its type
|
|
assoc = ProviderResourceAssociation(provider_name=provider_name,
|
|
resource_id=resource_id)
|
|
context.session.add(assoc)
|
|
|
|
def del_resource_associations(self, context, resource_ids):
|
|
if not resource_ids:
|
|
return
|
|
with context.session.begin(subtransactions=True):
|
|
(context.session.query(ProviderResourceAssociation).
|
|
filter(
|
|
ProviderResourceAssociation.resource_id.in_(resource_ids)).
|
|
delete(synchronize_session='fetch'))
|