102 lines
3.3 KiB
Python
102 lines
3.3 KiB
Python
# Copyright 2010-2011 OpenStack Foundation
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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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import copy
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import os
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from oslo_config import cfg
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versions_opts = [
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cfg.StrOpt('public_endpoint', default=None,
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help="Public url to use for versions endpoint. The default "
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"is None, which will use the request's host_url "
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"attribute to populate the URL base. If Cinder is "
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"operating behind a proxy, you will want to change "
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"this to represent the proxy's URL."),
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]
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CONF = cfg.CONF
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CONF.register_opts(versions_opts)
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def get_view_builder(req):
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base_url = CONF.public_endpoint or req.application_url
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return ViewBuilder(base_url)
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class ViewBuilder(object):
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def __init__(self, base_url):
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"""Initialize ViewBuilder.
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:param base_url: url of the root wsgi application
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"""
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self.base_url = base_url
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def build_choices(self, VERSIONS, req):
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version_objs = []
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for version in VERSIONS:
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version = VERSIONS[version]
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version_objs.append({
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"id": version['id'],
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"status": version['status'],
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"links": [{"rel": "self",
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"href": self.generate_href(version['id'],
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req.path), }, ],
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"media-types": version['media-types'], })
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return dict(choices=version_objs)
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def build_versions(self, versions):
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version_objs = []
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for version in sorted(versions.keys()):
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version = versions[version]
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version_objs.append({
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"id": version['id'],
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"status": version['status'],
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"updated": version['updated'],
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"links": self._build_links(version), })
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return dict(versions=version_objs)
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def build_version(self, version):
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reval = copy.deepcopy(version)
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reval['links'].insert(0, {
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"rel": "self",
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"href": self.base_url.rstrip('/') + '/', })
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return dict(version=reval)
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def _build_links(self, version_data):
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"""Generate a container of links that refer to the provided version."""
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href = self.generate_href(version_data['id'])
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links = [{'rel': 'self',
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'href': href, }, ]
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return links
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def generate_href(self, version, path=None):
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"""Create an url that refers to a specific version_number."""
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if version.find('v1.') == 0:
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version_number = 'v1'
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else:
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version_number = 'v2'
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if path:
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path = path.strip('/')
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return os.path.join(self.base_url, version_number, path)
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else:
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return os.path.join(self.base_url, version_number) + '/'
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