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# Copyright 2012 OpenStack Foundation.
# All Rights Reserved.
#
# 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 httplib
from oslo.serialization import jsonutils
from oslo.config import cfg
import webob.dec
from escalator.common import wsgi
from escalator import i18n
_ = i18n._
versions_opts = [
cfg.StrOpt('public_endpoint', default=None,
help=_('Public url to use for versions endpoint. The default '
'is None, which will use the request\'s host_url '
'attribute to populate the URL base. If Escalator is '
'operating behind a proxy, you will want to change '
'this to represent the proxy\'s URL.')),
]
CONF = cfg.CONF
CONF.register_opts(versions_opts)
class Controller(object):
"""A wsgi controller that reports which API versions are supported."""
def index(self, req):
"""Respond to a request for all OpenStack API versions."""
def build_version_object(version, path, status):
url = CONF.public_endpoint or req.host_url
return {
'id': 'v%s' % version,
'status': status,
'links': [
{
'rel': 'self',
'href': '%s/%s/' % (url, path),
},
],
}
version_objs = []
if CONF.enable_v1_api:
version_objs.extend([
build_version_object(1.1, 'v1', 'SUPPORTED'),
build_version_object(1.0, 'v1', 'SUPPORTED'),
])
response = webob.Response(request=req,
status=httplib.MULTIPLE_CHOICES,
content_type='application/json')
response.body = jsonutils.dumps(dict(versions=version_objs))
return response
@webob.dec.wsgify(RequestClass=wsgi.Request)
def __call__(self, req):
return self.index(req)
def create_resource(conf):
return wsgi.Resource(Controller())
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