6b11d276d1
Many changes to the Cinder REST API require changes to the consumers of the API. For example, If we need to add a required parameter to a method that is called by Nova, we'd need both the Nova calling code and the cinderclient that Nova uses to change. But newer Cinder versions with the change must work with older Nova versions, and there is no mechanism for this at the moment. Adding microversions will solve this problem. With microversions, the highest supported version will be negotiated by a field in the HTTP header that is sent to the Cinder API. In the case where the field 'versions' is not sent (i.e. clients and scripts that pre-date this change), then the lowest supported version would be used. In order to ensure that the API consumer is explicitly asking for a microversioned API, a new endpoint v3 is added, which is identical to API version v2. This means that our new Cinder API v3 would be the default, and consumers of the API that wished to use a newer version could do so by using that endpoint and a microversion in the HTTP header. New tests for microversioned API features on endpoint /v3 should be added to cinder/tests/unit/api/v3/ directory. Existing functionality will be tested via the .../v2/ unit tests. DocImpact APIImpact Implements: https://blueprints.launchpad.net/cinder/+spec/cinder-api-microversions Change-Id: I48cdbbc900c2805e59ee9aebc3b1c64aed3212ae
35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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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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from oslo_config import cfg
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from oslo_log import log as logging
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import paste.urlmap
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from cinder.i18n import _LW
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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def root_app_factory(loader, global_conf, **local_conf):
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if CONF.enable_v1_api:
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LOG.warning(_LW('The v1 api is deprecated and is not under active '
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'development. You should set enable_v1_api=false '
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'and enable_v3_api=true in your cinder.conf file.'))
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return paste.urlmap.urlmap_factory(loader, global_conf, **local_conf)
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