150 lines
4.8 KiB
Python
150 lines
4.8 KiB
Python
# -*- encoding: utf-8 -*-
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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_context import context
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from oslo_log import log
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import oslo_messaging as messaging
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from oslo_service import service
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from oslo_service import wsgi
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from oslo_utils import importutils
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from mogan.api import app
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from mogan.common import config
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from mogan.common import exception
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from mogan.common.i18n import _
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from mogan.common import rpc
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from mogan.conf import CONF
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from mogan import objects
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from mogan.objects import base as objects_base
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LOG = log.getLogger(__name__)
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class RPCService(service.Service):
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def __init__(self, manager_module, manager_class, topic, host=None):
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super(RPCService, self).__init__()
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self.host = host or CONF.host
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manager_module = importutils.try_import(manager_module)
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manager_class = getattr(manager_module, manager_class)
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self.manager = manager_class(host, topic)
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self.topic = topic
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self.rpcserver = None
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def start(self):
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super(RPCService, self).start()
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admin_context = context.get_admin_context()
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target = messaging.Target(topic=self.topic, server=self.host)
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endpoints = [self.manager]
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serializer = objects_base.MoganObjectSerializer()
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self.rpcserver = rpc.get_server(target, endpoints, serializer)
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self.rpcserver.start()
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self.manager.init_host()
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self.tg.add_dynamic_timer(
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self.manager.periodic_tasks,
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periodic_interval_max=CONF.periodic_interval,
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context=admin_context)
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LOG.info('Created RPC server for service %(service)s on host '
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'%(host)s.',
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{'service': self.topic, 'host': self.host})
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def stop(self):
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try:
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self.rpcserver.stop()
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self.rpcserver.wait()
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except Exception as e:
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LOG.exception('Service error occurred when stopping the '
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'RPC server. Error: %s', e)
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try:
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self.manager.del_host()
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except Exception as e:
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LOG.exception('Service error occurred when cleaning up '
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'the RPC manager. Error: %s', e)
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super(RPCService, self).stop(graceful=True)
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LOG.info('Stopped RPC server for service %(service)s on host '
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'%(host)s.',
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{'service': self.topic, 'host': self.host})
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def prepare_service(argv=None):
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argv = [] if argv is None else argv
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log.register_options(CONF)
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log.set_defaults(default_log_levels=CONF.default_log_levels + [
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'eventlet.wsgi.server=INFO', 'neutronclient=WARNING'])
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config.parse_args(argv)
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log.setup(CONF, 'mogan')
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objects.register_all()
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def process_launcher():
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return service.ProcessLauncher(CONF)
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class WSGIService(service.ServiceBase):
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"""Provides ability to launch mogan 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.VersionSelectorApplication()
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self.workers = (CONF.api.api_workers or
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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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