100 lines
3.1 KiB
Python
100 lines
3.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""WSGI application initialization for Nova APIs."""
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import os
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_service import _options as service_opts
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from paste import deploy
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from nova import config
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from nova import context
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from nova import exception
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from nova import objects
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from nova import service
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CONF = cfg.CONF
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CONFIG_FILES = ['api-paste.ini', 'nova.conf']
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objects.register_all()
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def _get_config_files(env=None):
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if env is None:
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env = os.environ
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dirname = env.get('OS_NOVA_CONFIG_DIR', '/etc/nova').strip()
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return [os.path.join(dirname, config_file)
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for config_file in CONFIG_FILES]
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def _setup_service(host, name):
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binary = name if name.startswith('nova-') else "nova-%s" % name
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ctxt = context.get_admin_context()
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service_ref = objects.Service.get_by_host_and_binary(
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ctxt, host, binary)
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if service_ref:
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service._update_service_ref(service_ref)
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else:
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try:
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service_obj = objects.Service(ctxt)
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service_obj.host = host
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service_obj.binary = binary
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service_obj.topic = None
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service_obj.report_count = 0
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service_obj.create()
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except (exception.ServiceTopicExists,
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exception.ServiceBinaryExists):
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# If we race to create a record with a sibling, don't
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# fail here.
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pass
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def error_application(exc, name):
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# TODO(cdent): make this something other than a stub
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def application(environ, start_response):
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start_response('500 Internal Server Error', [
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('Content-Type', 'text/plain; charset=UTF-8')])
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return ['Out of date %s service %s\n' % (name, exc)]
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return application
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def init_application(name):
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conf_files = _get_config_files()
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config.parse_args([], default_config_files=conf_files)
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logging.setup(CONF, "nova")
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# dump conf at debug (log_options option comes from oslo.service)
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# FIXME(mriedem): This is gross but we don't have a public hook into
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# oslo.service to register these options, so we are doing it manually for
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# now; remove this when we have a hook method into oslo.service.
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CONF.register_opts(service_opts.service_opts)
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if CONF.log_options:
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CONF.log_opt_values(
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logging.getLogger(__name__),
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logging.DEBUG)
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try:
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_setup_service(CONF.host, name)
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except exception.ServiceTooOld as exc:
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return error_application(exc, name)
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service.setup_profiler(name, CONF.host)
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conf = conf_files[0]
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return deploy.loadapp('config:%s' % conf, name=name)
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