nova/nova/api/openstack/compute/wsgi.py

87 lines
2.6 KiB
Python

# 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.
"""WSGI script for Nova API, installed by pbr."""
import os
from oslo_config import cfg
from oslo_log import log as logging
from paste import deploy
from nova import config
from nova import context
from nova import exception
from nova import objects
from nova import service
from nova import utils
CONF = cfg.CONF
CONFIG_FILES = ['api-paste.ini', 'nova.conf']
NAME = "osapi_compute"
utils.monkey_patch()
objects.register_all()
def _get_config_files(env=None):
if env is None:
env = os.environ
dirname = env.get('OS_NOVA_CONFIG_DIR', '/etc/nova').strip()
return [os.path.join(dirname, config_file)
for config_file in CONFIG_FILES]
def _setup_service(host, name):
ctxt = context.get_admin_context()
service_ref = objects.Service.get_by_host_and_binary(
ctxt, host, name)
if service_ref:
service._update_service_ref(service_ref)
else:
try:
service_obj = objects.Service(ctxt)
service_obj.host = host
service_obj.binary = 'nova-%s' % name
service_obj.topic = None
service_obj.report_count = 0
service_obj.create()
except (exception.ServiceTopicExists,
exception.ServiceBinaryExists):
# If we race to create a record with a sibling, don't
# fail here.
pass
def error_application(exc):
# TODO(cdent): make this something other than a stub
def application(environ, start_response):
start_response('500 Internal Server Error', [
('Content-Type', 'text/plain; charset=UTF-8')])
return ['Out of date API service %s\n' % exc]
return application
def init_application():
conf_files = _get_config_files()
config.parse_args([], default_config_files=conf_files)
logging.setup(CONF, "nova")
try:
_setup_service(CONF.host, NAME)
except exception.ServiceTooOld as exc:
return error_application(exc)
conf = conf_files[0]
return deploy.loadapp('config:%s' % conf, name=NAME)