c843acb4f6
In IPv6 management network environment, ceilometer command will throw 'Address family for hostname not support' when use WSGI simple server. The root cause is python TCPServer implementation is hard-coded to use IPv4, even in IPv6 environments. Python community want to fix it in Python3.5, so we need to make a workaround for it. Change-Id: I3260a346a095b0f3e57093c18b1920dffe5ac55d Closes-Bug: #1269243
149 lines
4.6 KiB
Python
149 lines
4.6 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 New Dream Network, LLC (DreamHost)
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#
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# Author: Doug Hellmann <doug.hellmann@dreamhost.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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import logging
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import os
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import socket
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from wsgiref import simple_server
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import netaddr
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from oslo.config import cfg
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import pecan
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from ceilometer.api import acl
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from ceilometer.api import config as api_config
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from ceilometer.api import hooks
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from ceilometer.api import middleware
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from ceilometer.openstack.common import log
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from ceilometer import service
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from ceilometer import storage
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LOG = log.getLogger(__name__)
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auth_opts = [
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cfg.StrOpt('auth_strategy',
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default='keystone',
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help='The strategy to use for auth: noauth or keystone.'),
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cfg.BoolOpt('enable_v1_api',
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default=True,
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help='Deploy the deprecated v1 API.'),
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]
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CONF = cfg.CONF
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CONF.register_opts(auth_opts)
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def get_pecan_config():
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# Set up the pecan configuration
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filename = api_config.__file__.replace('.pyc', '.py')
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return pecan.configuration.conf_from_file(filename)
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def setup_app(pecan_config=None, extra_hooks=None):
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# FIXME: Replace DBHook with a hooks.TransactionHook
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app_hooks = [hooks.ConfigHook(),
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hooks.DBHook(
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storage.get_connection(cfg.CONF),
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),
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hooks.PipelineHook(),
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hooks.TranslationHook()]
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if extra_hooks:
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app_hooks.extend(extra_hooks)
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if not pecan_config:
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pecan_config = get_pecan_config()
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pecan.configuration.set_config(dict(pecan_config), overwrite=True)
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app = pecan.make_app(
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pecan_config.app.root,
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static_root=pecan_config.app.static_root,
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template_path=pecan_config.app.template_path,
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debug=CONF.debug,
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force_canonical=getattr(pecan_config.app, 'force_canonical', True),
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hooks=app_hooks,
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wrap_app=middleware.ParsableErrorMiddleware,
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guess_content_type_from_ext=False
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)
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if getattr(pecan_config.app, 'enable_acl', True):
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return acl.install(app, cfg.CONF)
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return app
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class VersionSelectorApplication(object):
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def __init__(self):
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pc = get_pecan_config()
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pc.app.debug = CONF.debug
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pc.app.enable_acl = (CONF.auth_strategy == 'keystone')
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if cfg.CONF.enable_v1_api:
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from ceilometer.api.v1 import app as v1app
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self.v1 = v1app.make_app(cfg.CONF, enable_acl=pc.app.enable_acl)
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else:
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def not_found(environ, start_response):
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start_response('404 Not Found', [])
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return []
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self.v1 = not_found
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self.v2 = setup_app(pecan_config=pc)
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def __call__(self, environ, start_response):
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if environ['PATH_INFO'].startswith('/v1/'):
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return self.v1(environ, start_response)
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return self.v2(environ, start_response)
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def get_server_cls(host):
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"""Return an appropriate WSGI server class base on provided host
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:param host: The listen host for the ceilometer API server.
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"""
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server_cls = simple_server.WSGIServer
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if netaddr.valid_ipv6(host):
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# NOTE(dzyu) make sure use IPv6 sockets if host is in IPv6 pattern
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if getattr(server_cls, 'address_family') == socket.AF_INET:
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class server_cls(server_cls):
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address_family = socket.AF_INET6
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return server_cls
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def start():
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service.prepare_service()
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# Build the WSGI app
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root = VersionSelectorApplication()
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# Create the WSGI server and start it
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host, port = cfg.CONF.api.host, cfg.CONF.api.port
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server_cls = get_server_cls(host)
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srv = simple_server.make_server(host, port, root, server_cls)
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LOG.info(_('Starting server in PID %s') % os.getpid())
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LOG.info(_("Configuration:"))
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cfg.CONF.log_opt_values(LOG, logging.INFO)
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if host == '0.0.0.0':
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LOG.info(_(
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'serving on 0.0.0.0:%(sport)s, view at http://127.0.0.1:%(vport)s')
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% ({'sport': port, 'vport': port}))
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else:
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LOG.info(_("serving on http://%(host)s:%(port)s") % (
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{'host': host, 'port': port}))
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srv.serve_forever()
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