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