127 lines
4.7 KiB
Python
127 lines
4.7 KiB
Python
# Copyright 2012 OpenStack Foundation
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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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"""The Extended Snapshot Attributes API extension."""
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from webob import exc
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from cinder.api import extensions
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from cinder.api.openstack import wsgi
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from cinder.api import xmlutil
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from cinder import exception
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from cinder.openstack.common import log as logging
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from cinder import volume
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LOG = logging.getLogger(__name__)
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authorize = extensions.soft_extension_authorizer(
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'volume',
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'extended_snapshot_attributes')
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class ExtendedSnapshotAttributesController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(ExtendedSnapshotAttributesController, self).__init__(*args,
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**kwargs)
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self.volume_api = volume.API()
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def _get_snapshots(self, context):
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snapshots = self.volume_api.get_all_snapshots(context)
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rval = dict((snapshot['id'], snapshot) for snapshot in snapshots)
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return rval
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def _extend_snapshot(self, snapshot, data):
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for attr in ['project_id', 'progress']:
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key = "%s:%s" % (Extended_snapshot_attributes.alias, attr)
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snapshot[key] = data[attr]
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['cinder.context']
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if authorize(context):
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# Attach our slave template to the response object
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resp_obj.attach(xml=ExtendedSnapshotAttributeTemplate())
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try:
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snapshot = self.volume_api.get_snapshot(context, id)
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except exception.NotFound:
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explanation = _("Snapshot not found.")
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raise exc.HTTPNotFound(explanation=explanation)
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self._extend_snapshot(snapshot=resp_obj.obj['snapshot'],
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data=snapshot)
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['cinder.context']
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if authorize(context):
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# Attach our slave template to the response object
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resp_obj.attach(xml=ExtendedSnapshotAttributesTemplate())
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snapshots = list(resp_obj.obj.get('snapshots', []))
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db_snapshots = self._get_snapshots(context)
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for snapshot_object in snapshots:
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try:
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snapshot_data = db_snapshots[snapshot_object['id']]
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except KeyError:
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continue
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self._extend_snapshot(snapshot=snapshot_object,
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data=snapshot_data)
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class Extended_snapshot_attributes(extensions.ExtensionDescriptor):
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"""Extended SnapshotAttributes support."""
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name = "ExtendedSnapshotAttributes"
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alias = "os-extended-snapshot-attributes"
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namespace = ("http://docs.openstack.org/volume/ext/"
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"extended_snapshot_attributes/api/v1")
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updated = "2012-06-19T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = ExtendedSnapshotAttributesController()
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extension = extensions.ControllerExtension(self, 'snapshots',
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controller)
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return [extension]
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def make_snapshot(elem):
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elem.set('{%s}project_id' % Extended_snapshot_attributes.namespace,
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'%s:project_id' % Extended_snapshot_attributes.alias)
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elem.set('{%s}progress' % Extended_snapshot_attributes.namespace,
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'%s:progress' % Extended_snapshot_attributes.alias)
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class ExtendedSnapshotAttributeTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('snapshot', selector='snapshot')
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make_snapshot(root)
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alias = Extended_snapshot_attributes.alias
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namespace = Extended_snapshot_attributes.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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class ExtendedSnapshotAttributesTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('snapshots')
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elem = xmlutil.SubTemplateElement(root, 'snapshot',
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selector='snapshots')
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make_snapshot(elem)
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alias = Extended_snapshot_attributes.alias
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namespace = Extended_snapshot_attributes.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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