95 lines
3.7 KiB
Python
95 lines
3.7 KiB
Python
# Copyright 2013 Netease, LLC.
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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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"""The Extended Availability Zone Status 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 availability_zones as avail_zone
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authorize = extensions.soft_extension_authorizer('compute',
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'extended_availability_zone')
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class ExtendedAZController(wsgi.Controller):
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def _extend_server(self, context, server, instance):
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key = "%s:availability_zone" % Extended_availability_zone.alias
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az = avail_zone.get_instance_availability_zone(context, instance)
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if not az and instance.get('availability_zone'):
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# Likely hasn't reached a viable compute node yet so give back the
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# desired availability_zone that *may* exist in the instance
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# record itself.
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az = instance['availability_zone']
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server[key] = az
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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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resp_obj.attach(xml=ExtendedAZTemplate())
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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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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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resp_obj.attach(xml=ExtendedAZsTemplate())
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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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self._extend_server(context, server, db_instance)
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class Extended_availability_zone(extensions.ExtensionDescriptor):
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"""Extended Server Attributes support."""
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name = "ExtendedAvailabilityZone"
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alias = "OS-EXT-AZ"
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namespace = ("http://docs.openstack.org/compute/ext/"
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"extended_availability_zone/api/v2")
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updated = "2013-01-30T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = ExtendedAZController()
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extension = extensions.ControllerExtension(self, 'servers', controller)
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return [extension]
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def make_server(elem):
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elem.set('{%s}availability_zone' % Extended_availability_zone.namespace,
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'%s:availability_zone' % Extended_availability_zone.alias)
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class ExtendedAZTemplate(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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alias = Extended_availability_zone.alias
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namespace = Extended_availability_zone.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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class ExtendedAZsTemplate(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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alias = Extended_availability_zone.alias
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namespace = Extended_availability_zone.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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