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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
"""Starter script for Nova Compute."""
import sys
import traceback
from oslo.config import cfg
from nova.conductor import rpcapi as conductor_rpcapi
from nova import config
import nova.db.api
from nova import exception
from nova import objects
from nova.objects import base as objects_base
from nova.openstack.common.gettextutils import _
from nova.openstack.common import log as logging
from nova import service
from nova import utils
CONF = cfg.CONF
CONF.import_opt('compute_topic', 'nova.compute.rpcapi')
CONF.import_opt('use_local', 'nova.conductor.api', group='conductor')
def block_db_access():
class NoDB(object):
def __getattr__(self, attr):
return self
def __call__(self, *args, **kwargs):
stacktrace = "".join(traceback.format_stack())
LOG = logging.getLogger('nova.compute')
LOG.error(_('No db access allowed in nova-compute: %s'),
stacktrace)
raise exception.DBNotAllowed('nova-compute')
nova.db.api.IMPL = NoDB()
def main():
objects.register_all()
config.parse_args(sys.argv)
logging.setup('nova')
utils.monkey_patch()
if not CONF.conductor.use_local:
block_db_access()
objects_base.NovaObject.indirection_api = \
conductor_rpcapi.ConductorAPI()
server = service.Service.create(binary='nova-compute',
topic=CONF.compute_topic,
db_allowed=CONF.conductor.use_local)
service.serve(server)
service.wait()
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