vmware-nsx/quantum/service.py
Brad Hall 9bab0960b6 Second round of packaging changes
This change condenses the directory structure to something more similar to
what we had before while producing similar packages.

It also introduces version.py which allows us to get the version from git tags
(or a fallback version if not available).

Fixes lp bug 889336
Fixes lp bug 888795

Change-Id: I86136bd9dbabb5eb1f8366ed665ed9b54f695124
2011-11-28 10:33:52 -08:00

116 lines
3.9 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 Nicira Networks, Inc
# 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.
import logging
from quantum.common import config
from quantum import wsgi
from quantum.common import exceptions as exception
LOG = logging.getLogger('quantum.service')
class WsgiService(object):
"""Base class for WSGI based services.
For each api you define, you must also define these flags:
:<api>_listen: The address on which to listen
:<api>_listen_port: The port on which to listen
"""
def __init__(self, app_name, conf_file, conf):
self.app_name = app_name
self.conf_file = conf_file
self.conf = conf
self.wsgi_app = None
def start(self):
self.wsgi_app = _run_wsgi(self.app_name, self.conf, self.conf_file)
def wait(self):
self.wsgi_app.wait()
class QuantumApiService(WsgiService):
"""Class for quantum-api service."""
@classmethod
def create(cls, conf=None, options=None, args=None):
app_name = "quantum"
if not conf:
conf_file, conf = config.load_paste_config(
app_name, options, args)
if not conf:
message = (_('No paste configuration found for: %s'),
app_name)
raise exception.Error(message)
# Setup logging early, supplying both the CLI options and the
# configuration mapping from the config file
# We only update the conf dict for the verbose and debug
# flags. Everything else must be set up in the conf file...
# Log the options used when starting if we're in debug mode...
config.setup_logging(options, conf)
debug = options.get('debug') or \
config.get_option(conf, 'debug',
type='bool', default=False)
verbose = options.get('verbose') or \
config.get_option(conf, 'verbose',
type='bool', default=False)
conf['debug'] = debug
conf['verbose'] = verbose
LOG.debug("*" * 80)
LOG.debug("Configuration options gathered from config file:")
LOG.debug(conf_file)
LOG.debug("================================================")
items = dict([(k, v) for k, v in conf.items()
if k not in ('__file__', 'here')])
for key, value in sorted(items.items()):
LOG.debug("%(key)-30s %(value)s" % locals())
LOG.debug("*" * 80)
service = cls(app_name, conf_file, conf)
return service
def serve_wsgi(cls, conf=None, options=None, args=None):
try:
service = cls.create(conf, options, args)
except Exception:
logging.exception('in WsgiService.create()')
raise
service.start()
return service
def _run_wsgi(app_name, paste_conf, paste_config_file):
LOG.info(_('Using paste.deploy config at: %s'), paste_config_file)
conf, app = config.load_paste_app(app_name,
{'config_file': paste_config_file},
None)
if not app:
LOG.error(_('No known API applications configured in %s.'),
paste_config_file)
return
server = wsgi.Server()
server.start(app,
int(paste_conf['bind_port']), paste_conf['bind_host'])
return server