L2GatewayPlugin cannot be loaded in queens: no attribute FAULT_MAP

[Tobias Urdin]

In queens cloud-archive the neutron-server fails to load the l2gw plugin.

The l2gw package must be cut from a newer version of networking-l2gw where the fault map is loaded from neutron.lib.api.faults

2017-12-22 14:19:24.261 28176 CRITICAL neutron [req-e5a8e96c-e659-4de0-8424-60c7d1315000 - - - - -] Unhandled error: AttributeError: 'module' object has no attribute 'FAULT_MAP'
2017-12-22 14:19:24.261 28176 ERROR neutron Traceback (most recent call last):
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/bin/neutron-server", line 10, in <module>
2017-12-22 14:19:24.261 28176 ERROR neutron sys.exit(main())
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/cmd/eventlet/server/__init__.py", line 19, in main
2017-12-22 14:19:24.261 28176 ERROR neutron server.boot_server(wsgi_eventlet.eventlet_wsgi_server)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/server/__init__.py", line 42, in boot_server
2017-12-22 14:19:24.261 28176 ERROR neutron server_func()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/server/wsgi_eventlet.py", line 24, in eventlet_wsgi_server
2017-12-22 14:19:24.261 28176 ERROR neutron neutron_api = service.serve_wsgi(service.NeutronApiService)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 89, in serve_wsgi
2017-12-22 14:19:24.261 28176 ERROR neutron LOG.exception('Unrecoverable error: please check log '
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-12-22 14:19:24.261 28176 ERROR neutron self.force_reraise()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2017-12-22 14:19:24.261 28176 ERROR neutron six.reraise(self.type_, self.value, self.tb)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 86, in serve_wsgi
2017-12-22 14:19:24.261 28176 ERROR neutron service.start()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 62, in start
2017-12-22 14:19:24.261 28176 ERROR neutron self.wsgi_app = _run_wsgi(self.app_name)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 289, in _run_wsgi
2017-12-22 14:19:24.261 28176 ERROR neutron app = config.load_paste_app(app_name)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/common/config.py", line 122, in load_paste_app
2017-12-22 14:19:24.261 28176 ERROR neutron app = loader.load_app(app_name)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/oslo_service/wsgi.py", line 353, in load_app
2017-12-22 14:19:24.261 28176 ERROR neutron return deploy.loadapp("config:%s" % self.config_path, name=name)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp
2017-12-22 14:19:24.261 28176 ERROR neutron return loadobj(APP, uri, name=name, **kw)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 272, in loadobj
2017-12-22 14:19:24.261 28176 ERROR neutron return context.create()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
2017-12-22 14:19:24.261 28176 ERROR neutron return self.object_type.invoke(self)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
2017-12-22 14:19:24.261 28176 ERROR neutron **context.local_conf)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
2017-12-22 14:19:24.261 28176 ERROR neutron val = callable(*args, **kw)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/urlmap.py", line 31, in urlmap_factory
2017-12-22 14:19:24.261 28176 ERROR neutron app = loader.get_app(app_name, global_conf=global_conf)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
2017-12-22 14:19:24.261 28176 ERROR neutron name=name, global_conf=global_conf).create()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
2017-12-22 14:19:24.261 28176 ERROR neutron return self.object_type.invoke(self)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
2017-12-22 14:19:24.261 28176 ERROR neutron **context.local_conf)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
2017-12-22 14:19:24.261 28176 ERROR neutron val = callable(*args, **kw)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/auth.py", line 47, in pipeline_factory
2017-12-22 14:19:24.261 28176 ERROR neutron app = loader.get_app(pipeline[-1])
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
2017-12-22 14:19:24.261 28176 ERROR neutron name=name, global_conf=global_conf).create()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
2017-12-22 14:19:24.261 28176 ERROR neutron return self.object_type.invoke(self)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 146, in invoke
2017-12-22 14:19:24.261 28176 ERROR neutron return fix_call(context.object, context.global_conf, **context.local_conf)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
2017-12-22 14:19:24.261 28176 ERROR neutron val = callable(*args, **kw)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/api/v2/router.py", line 25, in _factory
2017-12-22 14:19:24.261 28176 ERROR neutron return pecan_app.v2_factory(global_config, **local_config)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/pecan_wsgi/app.py", line 47, in v2_factory
2017-12-22 14:19:24.261 28176 ERROR neutron startup.initialize_all()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/pecan_wsgi/startup.py", line 39, in initialize_all
2017-12-22 14:19:24.261 28176 ERROR neutron manager.init()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 296, in init
2017-12-22 14:19:24.261 28176 ERROR neutron NeutronManager.get_instance()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 247, in get_instance
2017-12-22 14:19:24.261 28176 ERROR neutron cls._create_instance()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 277, in inner
2017-12-22 14:19:24.261 28176 ERROR neutron return f(*args, **kwargs)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 233, in _create_instance
2017-12-22 14:19:24.261 28176 ERROR neutron cls._instance = cls()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 141, in __init__
2017-12-22 14:19:24.261 28176 ERROR neutron self._load_service_plugins()
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 203, in _load_service_plugins
2017-12-22 14:19:24.261 28176 ERROR neutron provider)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 165, in _get_plugin_instance
2017-12-22 14:19:24.261 28176 ERROR neutron plugin_class = self.load_class_for_provider(namespace, plugin_provider)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron/manager.py", line 159, in load_class_for_provider
2017-12-22 14:19:24.261 28176 ERROR neutron plugin_provider)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/neutron_lib/utils/runtime.py", line 52, in load_class_by_alias_or_classname
2017-12-22 14:19:24.261 28176 ERROR neutron class_to_load = importutils.import_class(name)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/oslo_utils/importutils.py", line 30, in import_class
2017-12-22 14:19:24.261 28176 ERROR neutron __import__(mod_str)
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/networking_l2gw/services/l2gateway/plugin.py", line 23, in <module>
2017-12-22 14:19:24.261 28176 ERROR neutron from networking_l2gw.db.l2gateway import l2gateway_db
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/networking_l2gw/db/l2gateway/l2gateway_db.py", line 27, in <module>
2017-12-22 14:19:24.261 28176 ERROR neutron from networking_l2gw.services.l2gateway import exceptions as l2gw_exc
2017-12-22 14:19:24.261 28176 ERROR neutron File "/usr/lib/python2.7/dist-packages/networking_l2gw/services/l2gateway/exceptions.py", line 129, in <module>
2017-12-22 14:19:24.261 28176 ERROR neutron base.FAULT_MAP.update({L2GatewayInUse: web_exc.HTTPConflict,
2017-12-22 14:19:24.261 28176 ERROR neutron AttributeError: 'module' object has no attribute 'FAULT_MAP'

[Corey Bryant (corey.bryant)]

Looks like we can either cherry-pick the following patch or release a snapshot package to Queens for now for Ubuntu, however it would be great if upstream could provide milestone releases.

a4c0992801be9bb13005cf8a6892806ac4e9a6fa
Author: Boden R <email address hidden>
Date: Wed Oct 18 08:39:53 2017 -0600

    use FAULT_MAP from neutron-lib

    The FAULT_MAP is now located in neutron-lib and will be removed from
    neutron with Ib051555ea8496ed7eec8ed30733c964012e31c32
    This patch updates imports to use neutron-lib's FAULT_MAP.

    Depends-On: I8e79f29206ec244d870e19f99c18ccaaa50b4761

    Change-Id: Ie54e77d3e264ff8da0d6e87e41fbe09758aecea9
patch:

commit a4c0992801be9bb13005cf8a6892806ac4e9a6fa
Author: Boden R <email address hidden>
Date: Wed Oct 18 08:39:53 2017 -0600

    use FAULT_MAP from neutron-lib

    The FAULT_MAP is now located in neutron-lib and will be removed from
    neutron with Ib051555ea8496ed7eec8ed30733c964012e31c32
    This patch updates imports to use neutron-lib's FAULT_MAP.

    Depends-On: I8e79f29206ec244d870e19f99c18ccaaa50b4761

    Change-Id: Ie54e77d3e264ff8da0d6e87e41fbe09758aecea9

[Corey Bryant (corey.bryant)]

I've just uploaded networking-l2gw 1:12.0.0~git20180223.32631dc1-0ubuntu1 which is based on the latest upstream stable/queens commit. This includes the 'use FAULT_MAP from neutron-lib' commit mentioned above.