94 lines
3.4 KiB
Python
94 lines
3.4 KiB
Python
# Copyright 2012 OpenStack, LLC.
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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 manila.api import extensions
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from manila.api.openstack import wsgi
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from manila.api import xmlutil
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from manila.openstack.common import log as logging
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from manila import volume
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LOG = logging.getLogger(__name__)
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authorize = extensions.soft_extension_authorizer('volume',
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'volume_host_attribute')
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class VolumeHostAttributeController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(VolumeHostAttributeController, self).__init__(*args, **kwargs)
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self.volume_api = volume.API()
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def _add_volume_host_attribute(self, context, resp_volume):
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try:
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db_volume = self.volume_api.get(context, resp_volume['id'])
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except Exception:
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return
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else:
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key = "%s:host" % Volume_host_attribute.alias
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resp_volume[key] = db_volume['host']
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['manila.context']
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if authorize(context):
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resp_obj.attach(xml=VolumeHostAttributeTemplate())
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self._add_volume_host_attribute(context, resp_obj.obj['volume'])
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['manila.context']
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if authorize(context):
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resp_obj.attach(xml=VolumeListHostAttributeTemplate())
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for volume in list(resp_obj.obj['volumes']):
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self._add_volume_host_attribute(context, volume)
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class Volume_host_attribute(extensions.ExtensionDescriptor):
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"""Expose host as an attribute of a volume."""
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name = "VolumeHostAttribute"
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alias = "os-vol-host-attr"
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namespace = ("http://docs.openstack.org/volume/ext/"
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"volume_host_attribute/api/v1")
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updated = "2011-11-03T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = VolumeHostAttributeController()
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extension = extensions.ControllerExtension(self, 'volumes', controller)
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return [extension]
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def make_volume(elem):
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elem.set('{%s}host' % Volume_host_attribute.namespace,
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'%s:host' % Volume_host_attribute.alias)
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class VolumeHostAttributeTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('volume', selector='volume')
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make_volume(root)
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alias = Volume_host_attribute.alias
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namespace = Volume_host_attribute.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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class VolumeListHostAttributeTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('volumes')
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elem = xmlutil.SubTemplateElement(root, 'volume', selector='volumes')
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make_volume(elem)
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alias = Volume_host_attribute.alias
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namespace = Volume_host_attribute.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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