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OpenStack Study: block_device_mapping.py**** CubicPower OpenStack Study ****
# Copyright 2013 OpenStack Foundation # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. """The block device mappings extension.""" from webob import exc from nova.api.openstack import extensions from nova import block_device from nova import exception ALIAS = "os-block-device-mapping" ATTRIBUTE_NAME = "%s:block_device_mapping" % ALIAS
**** CubicPower OpenStack Study **** class BlockDeviceMapping(extensions.V3APIExtensionBase): """Block device mapping boot support.""" name = "BlockDeviceMapping" alias = ALIAS version = 1
**** CubicPower OpenStack Study **** def get_resources(self): return []
**** CubicPower OpenStack Study **** def get_controller_extensions(self): return [] # use nova.api.extensions.server.extensions entry point to modify # server create kwargs
**** CubicPower OpenStack Study **** def server_create(self, server_dict, create_kwargs): block_device_mapping = server_dict.get(ATTRIBUTE_NAME, []) try: block_device_mapping = [ block_device.BlockDeviceDict.from_api(bdm_dict) for bdm_dict in block_device_mapping] except exception.InvalidBDMFormat as e: raise exc.HTTPBadRequest(explanation=e.format_message()) create_kwargs['block_device_mapping'] = block_device_mapping # Unset the legacy_bdm flag if we got a block device mapping. if block_device_mapping: create_kwargs['legacy_bdm'] = False
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