102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
# Copyright 2013 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 Volumes API extension."""
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova.api.openstack import xmlutil
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from nova import compute
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authorize = extensions.soft_extension_authorizer('compute', 'extended_volumes')
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class ExtendedVolumesController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(ExtendedVolumesController, self).__init__(*args, **kwargs)
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self.compute_api = compute.API()
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def _extend_server(self, context, server, instance):
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bdms = self.compute_api.get_instance_bdms(context, instance)
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volume_ids = [bdm['volume_id'] for bdm in bdms if bdm['volume_id']]
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key = "%s:volumes_attached" % Extended_volumes.alias
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server[key] = [{'id': volume_id} for volume_id in volume_ids]
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['nova.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=ExtendedVolumesServerTemplate())
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server = resp_obj.obj['server']
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db_instance = req.get_db_instance(server['id'])
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# server['id'] is guaranteed to be in the cache due to
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# the core API adding it in its 'show' method.
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self._extend_server(context, server, db_instance)
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['nova.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=ExtendedVolumesServersTemplate())
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servers = list(resp_obj.obj['servers'])
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for server in servers:
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db_instance = req.get_db_instance(server['id'])
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# server['id'] is guaranteed to be in the cache due to
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# the core API adding it in its 'detail' method.
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self._extend_server(context, server, db_instance)
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class Extended_volumes(extensions.ExtensionDescriptor):
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"""Extended Volumes support."""
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name = "ExtendedVolumes"
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alias = "os-extended-volumes"
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namespace = ("http://docs.openstack.org/compute/ext/"
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"extended_volumes/api/v1.1")
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updated = "2013-06-07T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = ExtendedVolumesController()
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extension = extensions.ControllerExtension(self, 'servers', controller)
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return [extension]
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def get_resources(self):
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return []
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def make_server(elem):
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volumes = xmlutil.SubTemplateElement(
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elem, '{%s}volume_attached' % Extended_volumes.namespace,
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selector='%s:volumes_attached' % Extended_volumes.alias)
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volumes.set('id')
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class ExtendedVolumesServerTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('server', selector='server')
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make_server(root)
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return xmlutil.SlaveTemplate(root, 1, nsmap={
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Extended_volumes.alias: Extended_volumes.namespace})
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class ExtendedVolumesServersTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('servers')
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elem = xmlutil.SubTemplateElement(root, 'server', selector='servers')
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make_server(elem)
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return xmlutil.SlaveTemplate(root, 1, nsmap={
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Extended_volumes.alias: Extended_volumes.namespace})
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