3aca3f7745
Now that all preparations are done, actually port the code to use
oslo.messaging. This patch does as little as possible. Follow up patches
that refactor and cleanup the code and configuration files, will be
merged later. The reason for this is to make the patch as slim as
possible, to make review process more smooth and concentrated.
Details:
* neutron/common/rpc.py:
- added init() and cleanup() to set global RPC layer state.
- added utility functions: get_server(), get_client(), get_notifier()
that wrap up oslo.messaging API a bit, enforcing eventlet executor
and setting serializer, among other things.
- removed PluginRpcDispatcher, instead introduced PluginRpcSerializer
to use as a default serializer for API callbacks.
* neutron/common/rpc_compat.py:
- emulated incubator RPC layer behaviour thru previously introduced
stub classes (RpcCallback, RpcProxy, ...) using new oslo.messaging
API.
- switched to using new oslo.messaging exception types.
* neutron/service.py:
- expect multiple RPC listeners that are of MessageHandlingServer
type, not GreenThread.
* neutron/common/config.py:
- initialize RPC layer in init()
* setup.cfg:
- added entry points for old notifier drivers to retain backward
compatibility.
* neutron/tests/...:
- introduced fake_notifier to replace impl_fake.
- faked out consume_in_thread() to avoid starting RPC listeners when
running unit tests.
- used 'fake' transport driver.
- made sure neutron.test.* exceptions are caught.
- initialize and clean up RPC layer for each test case.
* Ported all affected code from using neutron.openstack.common.notifier
API to oslo.messaging.Notifier.
* rpc.set_defaults() was renamed to rpc.set_transport_defaults()
* other changes not worth mentioning here.
blueprint oslo-messaging
DocImpact
Change-Id: I5a91c34df6e300f2dc46217b1b16352fcc3039fc
190 lines
7.9 KiB
Python
190 lines
7.9 KiB
Python
# Copyright 2011 VMware, 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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"""
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Routines for configuring Neutron
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"""
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import os
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from oslo.config import cfg
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from oslo import messaging
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from paste import deploy
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from neutron.api.v2 import attributes
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from neutron.common import utils
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from neutron.openstack.common.db import options as db_options
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from neutron.openstack.common import log as logging
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from neutron import version
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LOG = logging.getLogger(__name__)
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core_opts = [
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cfg.StrOpt('bind_host', default='0.0.0.0',
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help=_("The host IP to bind to")),
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cfg.IntOpt('bind_port', default=9696,
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help=_("The port to bind to")),
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cfg.StrOpt('api_paste_config', default="api-paste.ini",
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help=_("The API paste config file to use")),
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cfg.StrOpt('api_extensions_path', default="",
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help=_("The path for API extensions")),
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cfg.StrOpt('policy_file', default="policy.json",
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help=_("The policy file to use")),
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cfg.StrOpt('auth_strategy', default='keystone',
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help=_("The type of authentication to use")),
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cfg.StrOpt('core_plugin',
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help=_("The core plugin Neutron will use")),
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cfg.ListOpt('service_plugins', default=[],
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help=_("The service plugins Neutron will use")),
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cfg.StrOpt('base_mac', default="fa:16:3e:00:00:00",
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help=_("The base MAC address Neutron will use for VIFs")),
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cfg.IntOpt('mac_generation_retries', default=16,
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help=_("How many times Neutron will retry MAC generation")),
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cfg.BoolOpt('allow_bulk', default=True,
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help=_("Allow the usage of the bulk API")),
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cfg.BoolOpt('allow_pagination', default=False,
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help=_("Allow the usage of the pagination")),
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cfg.BoolOpt('allow_sorting', default=False,
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help=_("Allow the usage of the sorting")),
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cfg.StrOpt('pagination_max_limit', default="-1",
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help=_("The maximum number of items returned in a single "
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"response, value was 'infinite' or negative integer "
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"means no limit")),
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cfg.IntOpt('max_dns_nameservers', default=5,
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help=_("Maximum number of DNS nameservers")),
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cfg.IntOpt('max_subnet_host_routes', default=20,
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help=_("Maximum number of host routes per subnet")),
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cfg.IntOpt('max_fixed_ips_per_port', default=5,
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help=_("Maximum number of fixed ips per port")),
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cfg.IntOpt('dhcp_lease_duration', default=86400,
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deprecated_name='dhcp_lease_time',
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help=_("DHCP lease duration (in seconds). Use -1 to tell "
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"dnsmasq to use infinite lease times.")),
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cfg.BoolOpt('dhcp_agent_notification', default=True,
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help=_("Allow sending resource operation"
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" notification to DHCP agent")),
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cfg.BoolOpt('allow_overlapping_ips', default=False,
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help=_("Allow overlapping IP support in Neutron")),
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cfg.StrOpt('host', default=utils.get_hostname(),
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help=_("The hostname Neutron is running on")),
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cfg.BoolOpt('force_gateway_on_subnet', default=False,
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help=_("Ensure that configured gateway is on subnet")),
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cfg.BoolOpt('notify_nova_on_port_status_changes', default=True,
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help=_("Send notification to nova when port status changes")),
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cfg.BoolOpt('notify_nova_on_port_data_changes', default=True,
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help=_("Send notification to nova when port data (fixed_ips/"
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"floatingip) changes so nova can update its cache.")),
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cfg.StrOpt('nova_url',
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default='http://127.0.0.1:8774/v2',
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help=_('URL for connection to nova')),
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cfg.StrOpt('nova_admin_username',
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help=_('Username for connecting to nova in admin context')),
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cfg.StrOpt('nova_admin_password',
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help=_('Password for connection to nova in admin context'),
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secret=True),
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cfg.StrOpt('nova_admin_tenant_id',
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help=_('The uuid of the admin nova tenant')),
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cfg.StrOpt('nova_admin_auth_url',
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default='http://localhost:5000/v2.0',
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help=_('Authorization URL for connecting to nova in admin '
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'context')),
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cfg.StrOpt('nova_ca_certificates_file',
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help=_('CA file for novaclient to verify server certificates')),
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cfg.BoolOpt('nova_api_insecure', default=False,
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help=_("If True, ignore any SSL validation issues")),
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cfg.StrOpt('nova_region_name',
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help=_('Name of nova region to use. Useful if keystone manages'
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' more than one region.')),
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cfg.IntOpt('send_events_interval', default=2,
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help=_('Number of seconds between sending events to nova if '
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'there are any events to send.')),
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]
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core_cli_opts = [
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cfg.StrOpt('state_path',
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default='/var/lib/neutron',
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help=_("Where to store Neutron state files. "
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"This directory must be writable by the agent.")),
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]
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# Register the configuration options
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cfg.CONF.register_opts(core_opts)
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cfg.CONF.register_cli_opts(core_cli_opts)
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# Ensure that the control exchange is set correctly
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messaging.set_transport_defaults(control_exchange='neutron')
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_SQL_CONNECTION_DEFAULT = 'sqlite://'
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# Update the default QueuePool parameters. These can be tweaked by the
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# configuration variables - max_pool_size, max_overflow and pool_timeout
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db_options.set_defaults(sql_connection=_SQL_CONNECTION_DEFAULT,
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sqlite_db='', max_pool_size=10,
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max_overflow=20, pool_timeout=10)
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def init(args, **kwargs):
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cfg.CONF(args=args, project='neutron',
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version='%%prog %s' % version.version_info.release_string(),
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**kwargs)
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# FIXME(ihrachys): if import is put in global, circular import
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# failure occurs
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from neutron.common import rpc as n_rpc
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n_rpc.init(cfg.CONF)
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# Validate that the base_mac is of the correct format
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msg = attributes._validate_regex(cfg.CONF.base_mac,
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attributes.MAC_PATTERN)
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if msg:
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msg = _("Base MAC: %s") % msg
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raise Exception(msg)
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def setup_logging(conf):
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"""Sets up the logging options for a log with supplied name.
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:param conf: a cfg.ConfOpts object
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"""
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product_name = "neutron"
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logging.setup(product_name)
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LOG.info(_("Logging enabled!"))
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def load_paste_app(app_name):
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"""Builds and returns a WSGI app from a paste config file.
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:param app_name: Name of the application to load
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:raises ConfigFilesNotFoundError when config file cannot be located
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:raises RuntimeError when application cannot be loaded from config file
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"""
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config_path = cfg.CONF.find_file(cfg.CONF.api_paste_config)
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if not config_path:
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raise cfg.ConfigFilesNotFoundError(
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config_files=[cfg.CONF.api_paste_config])
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config_path = os.path.abspath(config_path)
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LOG.info(_("Config paste file: %s"), config_path)
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try:
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app = deploy.loadapp("config:%s" % config_path, name=app_name)
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except (LookupError, ImportError):
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msg = (_("Unable to load %(app_name)s from "
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"configuration file %(config_path)s.") %
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{'app_name': app_name,
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'config_path': config_path})
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LOG.exception(msg)
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raise RuntimeError(msg)
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return app
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