74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
# Copyright (c) 2015 Hitachi Data Systems, Inc.
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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 oslo_messaging
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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.views import capabilities as capabilities_view
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from cinder.common import constants
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from cinder import exception
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from cinder.i18n import _
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from cinder import objects
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from cinder.policies import capabilities as policy
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from cinder.volume import rpcapi
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class CapabilitiesController(wsgi.Controller):
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"""The Capabilities controller for the OpenStack API."""
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_view_builder_class = capabilities_view.ViewBuilder
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def __init__(self):
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# FIXME(jdg): Is it kosher that this just
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# skips the volume.api and goes straight to RPC
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# from here?
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self.volume_api = rpcapi.VolumeAPI()
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super(CapabilitiesController, self).__init__()
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def show(self, req, id):
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"""Return capabilities list of given backend."""
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context = req.environ['cinder.context']
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context.authorize(policy.CAPABILITIES_POLICY)
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filters = {'host_or_cluster': id, 'binary': constants.VOLUME_BINARY}
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services = objects.ServiceList.get_all(context, filters)
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if not services:
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msg = (_("Can't find service: %s") % id)
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raise exception.NotFound(msg)
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topic = services[0].service_topic_queue
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try:
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capabilities = self.volume_api.get_capabilities(context, topic,
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False)
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except oslo_messaging.MessagingTimeout:
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raise exception.RPCTimeout(service=topic)
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return self._view_builder.summary(req, capabilities, topic)
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class Capabilities(extensions.ExtensionDescriptor):
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"""Capabilities support."""
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name = "Capabilities"
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alias = "capabilities"
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updated = "2015-08-31T00:00:00+00:00"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension(
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Capabilities.alias,
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CapabilitiesController())
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resources.append(res)
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return resources
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