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# 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.
"""Handler for the root of the Placement API."""
from oslo_serialization import jsonutils
from oslo_utils import encodeutils
from oslo_utils import timeutils
from nova.api.openstack.placement import microversion
from nova.api.openstack.placement import wsgi_wrapper
@wsgi_wrapper.PlacementWsgify
def home(req):
want_version = req.environ[microversion.MICROVERSION_ENVIRON]
min_version = microversion.min_version_string()
max_version = microversion.max_version_string()
# NOTE(cdent): As sections of the api are added, links can be
# added to this output to align with the guidelines at
# http://specs.openstack.org/openstack/api-wg/guidelines/microversion_specification.html#version-discovery
version_data = {
'id': 'v%s' % min_version,
'max_version': max_version,
'min_version': min_version,
}
version_json = jsonutils.dumps({'versions': [version_data]})
req.response.body = encodeutils.to_utf8(version_json)
req.response.content_type = 'application/json'
if want_version.matches((1, 15)):
req.response.cache_control = 'no-cache'
req.response.last_modified = timeutils.utcnow(with_timezone=True)
return req.response
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