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# Copyright 2013 OpenStack Foundation
#
# 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
import os
import socket
from oslo_concurrency import processutils
from oslo_config import cfg
import oslo_i18n
from oslo_service import service
from oslo_service import systemd
import pbr.version
# NOTE(dstanek): i18n.enable_lazy() must be called before
# keystone.i18n._() is called to ensure it has the desired lazy lookup
# behavior. This includes cases, like keystone.exceptions, where
# keystone.i18n._() is called at import time.
oslo_i18n.enable_lazy()
from keystone.common import environment
from keystone.common import utils
from keystone import config
from keystone.i18n import _
from keystone.server import common
from keystone import service as keystone_service
CONF = cfg.CONF
class ServerWrapper(object):
"""Wraps a Server with some launching info & capabilities."""
def __init__(self, server, workers):
self.server = server
self.workers = workers
def launch_with(self, launcher):
self.server.listen()
if self.workers > 1:
# Use multi-process launcher
launcher.launch_service(self.server, self.workers)
else:
# Use single process launcher
launcher.launch_service(self.server)
def create_server(conf, name, host, port, workers):
app = keystone_service.loadapp('config:%s' % conf, name)
server = environment.Server(app, host=host, port=port,
keepalive=CONF.eventlet_server.tcp_keepalive,
keepidle=CONF.eventlet_server.tcp_keepidle)
if CONF.eventlet_server_ssl.enable:
server.set_ssl(CONF.eventlet_server_ssl.certfile,
CONF.eventlet_server_ssl.keyfile,
CONF.eventlet_server_ssl.ca_certs,
CONF.eventlet_server_ssl.cert_required)
return name, ServerWrapper(server, workers)
def serve(*servers):
logging.warning(_('Running keystone via eventlet is deprecated as of Kilo '
'in favor of running in a WSGI server (e.g. mod_wsgi). '
'Support for keystone under eventlet will be removed in '
'the "M"-Release.'))
if max([server[1].workers for server in servers]) > 1:
launcher = service.ProcessLauncher(CONF)
else:
launcher = service.ServiceLauncher(CONF)
for name, server in servers:
try:
server.launch_with(launcher)
except socket.error:
logging.exception(_('Failed to start the %(name)s server') % {
'name': name})
raise
# notify calling process we are ready to serve
systemd.notify_once()
for name, server in servers:
launcher.wait()
def _get_workers(worker_type_config_opt):
# Get the value from config, if the config value is None (not set), return
# the number of cpus with a minimum of 2.
worker_count = CONF.eventlet_server.get(worker_type_config_opt)
if not worker_count:
worker_count = max(2, processutils.get_worker_count())
return worker_count
def configure_threading():
monkeypatch_thread = not CONF.standard_threads
pydev_debug_url = utils.setup_remote_pydev_debug()
if pydev_debug_url:
# in order to work around errors caused by monkey patching we have to
# set the thread to False. An explanation is here:
# http://lists.openstack.org/pipermail/openstack-dev/2012-August/
# 000794.html
monkeypatch_thread = False
environment.use_eventlet(monkeypatch_thread)
def run(possible_topdir):
dev_conf = os.path.join(possible_topdir,
'etc',
'keystone.conf')
config_files = None
if os.path.exists(dev_conf):
config_files = [dev_conf]
common.configure(
version=pbr.version.VersionInfo('keystone').version_string(),
config_files=config_files,
pre_setup_logging_fn=configure_threading)
paste_config = config.find_paste_config()
def create_servers():
admin_worker_count = _get_workers('admin_workers')
public_worker_count = _get_workers('public_workers')
servers = []
servers.append(create_server(paste_config,
'admin',
CONF.eventlet_server.admin_bind_host,
CONF.eventlet_server.admin_port,
admin_worker_count))
servers.append(create_server(paste_config,
'main',
CONF.eventlet_server.public_bind_host,
CONF.eventlet_server.public_port,
public_worker_count))
return servers
_unused, servers = common.setup_backends(
startup_application_fn=create_servers)
serve(*servers)
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