Remove v3 stub controller

This patch removes the stub controller for v3 that was introduced
in Mitaka when Glare became a standalone service.  As the v3 API
was always EXPERIMENTAL, this removal does not require a deprecation
period.  (Also, anyone interested in artifacts is using Glare, not
the v3 API.)

Change-Id: Ie16ba13c5970596eebf7b757c0712358c80f376e
Closes-bug: #1650108

glance/api/v3/router.py

@@ -1,77 +0,0 @@
-# Copyright (c) 2015 Mirantis, Inc.
-#
-# 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.
-
-from oslo_log import log as logging
-from oslo_log import versionutils
-
-from glance.common import wsgi
-from glance.i18n import _LW
-
-
-LOG = logging.getLogger(__name__)
-
-"""v3 controller stub
-
-Since Glance Artifact Service was released in Liberty as experimental Glance v3
-API, its router was referenced in paste configuration as glance.api.v3.router
-In Mitaka the Artifacts Service was moved into a standalone process and its
-router was renamed to glance.api.artifacts.router.
-However, in existing deployments the glance-api-paste.ini may still reference
-the glance.api.v3.router. To not break these deployments this stub is included
-to redirect the v3 request to glare service (if it is present) or return a 410
-otherwise.
-This stub controller should be removed in future releases.
-"""
-
-
-class API(wsgi.Router):
-    def __init__(self, mapper):
-        versionutils.report_deprecated_feature(
-            LOG,
-            _LW('/v3 controller is deprecated and will be removed from '
-                'glance-api soon. Remove the reference to it from '
-                'glance-api-paste.ini configuration file and use Glance '
-                'Artifact Service API instead'))
-        redirector = self._get_redirector()
-        mapper.connect(None, "/artifacts",
-                       controller=redirector, action='redirect')
-        mapper.connect(None, "/artifacts/{path:.*}",
-                       controller=redirector, action='redirect')
-        super(API, self).__init__(mapper)
-
-    def _get_redirector(self):
-        return wsgi.Resource(RedirectController(),
-                             serializer=RedirectResponseSerializer())
-
-
-class RedirectController(object):
-    def redirect(self, req, path=None):
-        try:
-            glare_endpoint = next((s['endpoints']
-                                   for s in req.context.service_catalog
-                                   if s['type'] == 'artifact'))[0]['publicURL']
-            if path:
-                path = '/' + path
-            return '{0}/v0.1/artifacts{1}'.format(glare_endpoint, path or "")
-        except StopIteration:
-            return None
-
-
-class RedirectResponseSerializer(wsgi.JSONResponseSerializer):
-    def default(self, response, res):
-        if res:
-            response.location = res
-            response.status_int = 301
-        else:
-            response.status_int = 410