4ceef7f8a8
New releases of oslo.config support a 'mutable' parameter to Opts. This is only respected when the new method mutate_config_files is called instead of reload_config_files. ZUN delegates making this call to oslo.service, so how do we switch? Icec3e664f3fe72614e373b2938e8dee53cf8bc5e allows services to tell oslo.service they want mutate_config_files to be called by passing a parameter, which this patch does. This allows ZUN to benefit from I1e7a69de169cc85f4c09954b2f46ce2da7106d90, where the 'debug' option (owned by oslo.log) is made mutable. IE when all these patches merge, we should be able to turn debug logging on and off by changing the config and sending SIGHUP. Part of bp:mutable-config Change-Id: I50458a450f7931a5b606147beb22ef406d73ae49
97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 eNovance <licensing@enovance.com>
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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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from oslo_concurrency import processutils
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from oslo_log import log
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from oslo_service import service
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from oslo_service import wsgi
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from zun.api import app
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from zun.common import config
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from zun.common import exception
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from zun.common.i18n import _
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import zun.conf
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CONF = zun.conf.CONF
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def prepare_service(argv=None):
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if argv is None:
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argv = []
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log.register_options(CONF)
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config.parse_args(argv)
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config.set_config_defaults()
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log.setup(CONF, 'zun')
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# TODO(yuanying): Uncomment after objects are implemented
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# objects.register_all()
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def process_launcher():
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return service.ProcessLauncher(CONF, restart_method='mutate')
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class WSGIService(service.ServiceBase):
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"""Provides ability to launch Zun API from wsgi app."""
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def __init__(self, name, use_ssl=False):
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"""Initialize, but do not start the WSGI server.
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:param name: The name of the WSGI server given to the loader.
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:param use_ssl: Wraps the socket in an SSL context if True.
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:returns: None
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"""
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self.name = name
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self.app = app.load_app()
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self.workers = (CONF.api.workers or processutils.get_worker_count())
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if self.workers and self.workers < 1:
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raise exception.ConfigInvalid(
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_("api_workers value of %d is invalid, "
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"must be greater than 0.") % self.workers)
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self.server = wsgi.Server(CONF, name, self.app,
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host=CONF.api.host_ip,
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port=CONF.api.port,
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use_ssl=use_ssl)
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def start(self):
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"""Start serving this service using loaded configuration.
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:returns: None
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"""
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self.server.start()
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def stop(self):
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"""Stop serving this API.
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:returns: None
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"""
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self.server.stop()
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def wait(self):
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"""Wait for the service to stop serving this API.
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:returns: None
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"""
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self.server.wait()
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def reset(self):
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"""Reset server greenpool size to default.
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:returns: None
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"""
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self.server.reset()
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