111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
# Copyright 2013, Red Hat, Inc.
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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 webob
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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 import db
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from cinder.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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def authorize(context, action_name):
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action = 'snapshot_actions:%s' % action_name
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extensions.extension_authorizer('snapshot', action)(context)
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class SnapshotActionsController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(SnapshotActionsController, self).__init__(*args, **kwargs)
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LOG.debug("SnapshotActionsController initialized")
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@wsgi.action('os-update_snapshot_status')
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def _update_snapshot_status(self, req, id, body):
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"""Update database fields related to status of a snapshot.
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Intended for creation of snapshots, so snapshot state
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must start as 'creating' and be changed to 'available',
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'creating', or 'error'.
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"""
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context = req.environ['cinder.context']
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authorize(context, 'update_snapshot_status')
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LOG.debug("body: %s" % body)
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try:
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status = body['os-update_snapshot_status']['status']
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except KeyError:
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msg = _("'status' must be specified.")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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# Allowed state transitions
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status_map = {'creating': ['creating', 'available', 'error'],
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'deleting': ['deleting', 'error_deleting']}
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current_snapshot = db.snapshot_get(context, id)
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if current_snapshot['status'] not in status_map:
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msg = _("Snapshot status %(cur)s not allowed for "
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"update_snapshot_status") % {
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'cur': current_snapshot['status']}
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raise webob.exc.HTTPBadRequest(explanation=msg)
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if status not in status_map[current_snapshot['status']]:
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msg = _("Provided snapshot status %(provided)s not allowed for "
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"snapshot with status %(current)s.") % \
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{'provided': status,
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'current': current_snapshot['status']}
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raise webob.exc.HTTPBadRequest(explanation=msg)
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update_dict = {'id': id,
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'status': status}
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progress = body['os-update_snapshot_status'].get('progress', None)
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if progress:
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# This is expected to be a string like '73%'
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msg = _('progress must be an integer percentage')
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try:
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integer = int(progress[:-1])
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except ValueError:
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raise webob.exc.HTTPBadRequest(explanation=msg)
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if integer < 0 or integer > 100 or progress[-1] != '%':
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raise webob.exc.HTTPBadRequest(explanation=msg)
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update_dict.update({'progress': progress})
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LOG.info("Updating snapshot %(id)s with info %(dict)s" %
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{'id': id, 'dict': update_dict})
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db.snapshot_update(context, id, update_dict)
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return webob.Response(status_int=202)
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class Snapshot_actions(extensions.ExtensionDescriptor):
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"""Enable snapshot manager actions."""
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name = "SnapshotActions"
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alias = "os-snapshot-actions"
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namespace = \
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"http://docs.openstack.org/volume/ext/snapshot-actions/api/v1.1"
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updated = "2013-07-16T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = SnapshotActionsController()
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extension = extensions.ControllerExtension(self,
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'snapshots',
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controller)
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return [extension]
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