103 lines
4.0 KiB
Python
103 lines
4.0 KiB
Python
# Copyright 2014 NEC Corporation. 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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"""
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version interface
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"""
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from six.moves import urllib
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from novaclient import base
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from novaclient import exceptions as exc
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class Version(base.Resource):
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"""
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Compute REST API information
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"""
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def __repr__(self):
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return "<Version>"
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class VersionManager(base.ManagerWithFind):
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resource_class = Version
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def _get_current(self):
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"""Returns info about current version."""
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# TODO(sdague): we've now got to make up to 3 HTTP requests to
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# determine what version we are running, due to differences in
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# deployments and versions. We really need to cache the
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# results of this per endpoint and keep the results of it for
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# some reasonable TTL (like 24 hours) to reduce our round trip
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# traffic.
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try:
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# Assume that the value of get_endpoint() is something
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# we can get the version of. This is a 404 for Nova <
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# Mitaka if the service catalog contains project_id.
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#
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# TODO(sdague): add microversion for when this will
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# change
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url = "%s" % self.api.client.get_endpoint()
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return self._get(url, "version")
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except exc.NotFound:
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# If that's a 404, we can instead try hacking together
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# an endpoint root url by chopping off the last 2 /s.
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# This is kind of gross, but we've had this baked in
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# so long people got used to this hard coding.
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#
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# NOTE(sdague): many service providers don't really
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# implement GET / in the expected way, if we do a GET
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# /v2 that's actually a 300 redirect to
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# /v2/... because of how paste works. So adding the
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# end slash is really important.
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url = "%s/" % url.rsplit("/", 1)[0]
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return self._get(url, "version")
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def get_current(self):
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try:
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return self._get_current()
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except exc.Unauthorized:
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# NOTE(sdague): RAX's repose configuration blocks access to the
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# versioned endpoint, which is definitely non-compliant behavior.
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# However, there is no defcore test for this yet. Remove this code
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# block once we land things in defcore.
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return None
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def list(self):
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"""List all versions."""
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endpoint = self.api.client.get_endpoint()
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url = urllib.parse.urlparse(endpoint)
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# NOTE(andreykurilin): endpoint URL has at least 3 formats:
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# 1. the classic (legacy) endpoint:
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# http://{host}:{optional_port}/v{2 or 2.1}/{project-id}
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# 2. starting from microversion 2.18 project-id is not included:
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# http://{host}:{optional_port}/v{2 or 2.1}
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# 3. under wsgi:
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# http://{host}:{optional_port}/compute/v{2 or 2.1}
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if (url.path.endswith("v2") or "/v2/" in url.path or
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url.path.endswith("v2.1") or "/v2.1/" in url.path):
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# this way should handle all 3 possible formats
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path = url.path[:url.path.rfind("/v2")]
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version_url = '%s://%s%s' % (url.scheme, url.netloc, path)
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else:
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# NOTE(andreykurilin): probably, it is one of the next cases:
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# * https://compute.example.com/
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# * https://example.com/compute
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# leave as is without cropping.
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version_url = endpoint
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return self._list(version_url, "versions")
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