141 lines
5.4 KiB
Python
141 lines
5.4 KiB
Python
# Copyright 2014 IBM Corp.
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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 oslo_log import log as logging
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import six
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import webob
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from webob import exc
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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 import xmlutil
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from cinder import exception
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from cinder.i18n import _, _LI
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from cinder import replication as replicationAPI
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from cinder 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_replication')
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class VolumeReplicationController(wsgi.Controller):
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"""The Volume Replication API controller for the Openstack API."""
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def __init__(self, *args, **kwargs):
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super(VolumeReplicationController, self).__init__(*args, **kwargs)
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self.volume_api = volume.API()
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self.replication_api = replicationAPI.API()
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def _add_replication_attributes(self, req, context, resp_volume):
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db_volume = req.cached_resource_by_id(resp_volume['id'])
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key = "%s:extended_status" % Volume_replication.alias
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resp_volume[key] = db_volume['replication_extended_status']
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key = "%s:driver_data" % Volume_replication.alias
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resp_volume[key] = db_volume['replication_driver_data']
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ['cinder.context']
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if authorize(context):
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resp_obj.attach(xml=VolumeReplicationAttributeTemplate())
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self._add_replication_attributes(req, context,
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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['cinder.context']
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if authorize(context):
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resp_obj.attach(xml=VolumeReplicationListAttributeTemplate())
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for vol in list(resp_obj.obj['volumes']):
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self._add_replication_attributes(req, context, vol)
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@wsgi.response(202)
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@wsgi.action('os-promote-replica')
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def promote(self, req, id, body):
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context = req.environ['cinder.context']
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try:
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vol = self.volume_api.get(context, id)
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LOG.info(_LI('Attempting to promote secondary replica to primary'
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' for volume %s.'),
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id,
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context=context)
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self.replication_api.promote(context, vol)
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except exception.NotFound:
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msg = _("Volume could not be found")
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raise exc.HTTPNotFound(explanation=msg)
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except exception.ReplicationError as error:
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raise exc.HTTPBadRequest(explanation=six.text_type(error))
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return webob.Response(status_int=202)
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@wsgi.response(202)
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@wsgi.action('os-reenable-replica')
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def reenable(self, req, id, body):
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context = req.environ['cinder.context']
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try:
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vol = self.volume_api.get(context, id)
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LOG.info(_LI('Attempting to sync secondary replica with primary'
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' for volume %s.'),
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id,
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context=context)
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self.replication_api.reenable(context, vol)
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except exception.NotFound:
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msg = _("Volume could not be found")
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raise exc.HTTPNotFound(explanation=msg)
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except exception.ReplicationError as error:
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raise exc.HTTPBadRequest(explanation=six.text_type(error))
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return webob.Response(status_int=202)
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class Volume_replication(extensions.ExtensionDescriptor):
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"""Volume replication management support."""
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name = "VolumeReplication"
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alias = "os-volume-replication"
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namespace = "http://docs.openstack.org/volume/ext/volume_replication/" + \
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"api/v1"
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updated = "2014-08-01T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = VolumeReplicationController()
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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}extended_status' % Volume_replication.namespace,
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'%s:extended_status' % Volume_replication.alias)
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elem.set('{%s}driver_data' % Volume_replication.namespace,
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'%s:driver_data' % Volume_replication.alias)
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class VolumeReplicationAttributeTemplate(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_replication.alias
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namespace = Volume_replication.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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class VolumeReplicationListAttributeTemplate(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_replication.alias
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namespace = Volume_replication.namespace
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return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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