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#!/usr/bin/env python
# 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 eventlet
import os
if os.name == 'nt':
# eventlet monkey patching causes subprocess.Popen to fail on Windows
# when using pipes due to missing non blocking I/O support
eventlet.monkey_patch(os=False)
else:
eventlet.monkey_patch()
import os
import sys
import traceback
from oslo.config import cfg
# If ../nova/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
POSSIBLE_TOPDIR = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
os.pardir,
os.pardir))
if os.path.exists(os.path.join(POSSIBLE_TOPDIR, 'nova', '__init__.py')):
sys.path.insert(0, POSSIBLE_TOPDIR)
from nova import config
import nova.db.api
from nova import exception
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')
LOG = logging.getLogger('nova.compute')
def block_db_access():
class NoDB(object):
def __getattr__(self, attr):
return self
def __call__(self, *args, **kwargs):
stacktrace = "".join(traceback.format_stack())
LOG.error('No db access allowed in nova-compute: %s' % stacktrace)
raise exception.DBNotAllowed('nova-compute')
nova.db.api.IMPL = NoDB()
if __name__ == '__main__':
config.parse_args(sys.argv)
logging.setup('nova')
utils.monkey_patch()
if not CONF.conductor.use_local:
block_db_access()
server = service.Service.create(binary='nova-compute',
topic=CONF.compute_topic,
db_allowed=False)
service.serve(server)
service.wait()
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