169 lines
6.3 KiB
Python
169 lines
6.3 KiB
Python
# Copyright (c) 2013 The Johns Hopkins University/Applied Physics Laboratory
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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 volume types encryption extension."""
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from http import HTTPStatus
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import webob
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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.schemas import volume_type_encryption
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from cinder.api import validation
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from cinder import db
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from cinder import exception
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from cinder.i18n import _
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from cinder.policies import volume_type as policy
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from cinder import rpc
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from cinder.volume import volume_types
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class VolumeTypeEncryptionController(wsgi.Controller):
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"""The volume type encryption API controller for the OpenStack API."""
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def _get_volume_type_encryption(self, context, type_id):
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encryption_ref = db.volume_type_encryption_get(context, type_id)
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encryption_specs = {}
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if not encryption_ref:
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return encryption_specs
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for key, value in encryption_ref.items():
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encryption_specs[key] = value
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return encryption_specs
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def _check_type(self, context, type_id):
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# Not found exception will be handled at the wsgi level
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volume_types.get_volume_type(context, type_id)
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def _encrypted_type_in_use(self, context, volume_type_id):
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volume_list = db.volume_type_encryption_volume_get(context,
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volume_type_id)
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# If there is at least one volume in the list
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# returned, this type is in use by a volume.
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if len(volume_list) > 0:
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return True
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else:
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return False
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def index(self, req, type_id):
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"""Returns the encryption specs for a given volume type."""
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context = req.environ['cinder.context']
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context.authorize(policy.GET_ENCRYPTION_POLICY)
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self._check_type(context, type_id)
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return self._get_volume_type_encryption(context, type_id)
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@validation.schema(volume_type_encryption.create)
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def create(self, req, type_id, body):
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"""Create encryption specs for an existing volume type."""
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context = req.environ['cinder.context']
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context.authorize(policy.CREATE_ENCRYPTION_POLICY)
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key_size = body['encryption'].get('key_size')
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if key_size is not None:
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body['encryption']['key_size'] = int(key_size)
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if self._encrypted_type_in_use(context, type_id):
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expl = _('Cannot create encryption specs. Volume type in use.')
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raise webob.exc.HTTPBadRequest(explanation=expl)
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self._check_type(context, type_id)
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encryption_specs = self._get_volume_type_encryption(context, type_id)
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if encryption_specs:
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raise exception.VolumeTypeEncryptionExists(type_id=type_id)
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encryption_specs = body['encryption']
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db.volume_type_encryption_create(context, type_id, encryption_specs)
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notifier_info = dict(type_id=type_id, specs=encryption_specs)
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notifier = rpc.get_notifier('volumeTypeEncryption')
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notifier.info(context, 'volume_type_encryption.create', notifier_info)
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return body
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@validation.schema(volume_type_encryption.update)
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def update(self, req, type_id, id, body):
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"""Update encryption specs for a given volume type."""
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context = req.environ['cinder.context']
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context.authorize(policy.UPDATE_ENCRYPTION_POLICY)
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key_size = body['encryption'].get('key_size')
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if key_size is not None:
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body['encryption']['key_size'] = int(key_size)
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self._check_type(context, type_id)
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if self._encrypted_type_in_use(context, type_id):
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expl = _('Cannot update encryption specs. Volume type in use.')
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raise webob.exc.HTTPBadRequest(explanation=expl)
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encryption_specs = body['encryption']
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db.volume_type_encryption_update(context, type_id, encryption_specs)
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notifier_info = dict(type_id=type_id, id=id)
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notifier = rpc.get_notifier('volumeTypeEncryption')
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notifier.info(context, 'volume_type_encryption.update', notifier_info)
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return body
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def show(self, req, type_id, id):
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"""Return a single encryption item."""
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context = req.environ['cinder.context']
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context.authorize(policy.GET_ENCRYPTION_POLICY)
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self._check_type(context, type_id)
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encryption_specs = self._get_volume_type_encryption(context, type_id)
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if id not in encryption_specs:
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raise exception.VolumeTypeEncryptionNotFound(type_id=type_id)
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return {id: encryption_specs[id]}
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def delete(self, req, type_id, id):
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"""Delete encryption specs for a given volume type."""
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context = req.environ['cinder.context']
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context.authorize(policy.DELETE_ENCRYPTION_POLICY)
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if self._encrypted_type_in_use(context, type_id):
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expl = _('Cannot delete encryption specs. Volume type in use.')
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raise webob.exc.HTTPBadRequest(explanation=expl)
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else:
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# Not found exception will be handled at the wsgi level
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db.volume_type_encryption_delete(context, type_id)
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return webob.Response(status_int=HTTPStatus.ACCEPTED)
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class Volume_type_encryption(extensions.ExtensionDescriptor):
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"""Encryption support for volume types."""
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name = "VolumeTypeEncryption"
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alias = "encryption"
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updated = "2013-07-01T00:00:00+00:00"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension(
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Volume_type_encryption.alias,
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VolumeTypeEncryptionController(),
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parent=dict(member_name='type', collection_name='types'))
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resources.append(res)
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return resources
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def get_controller_extensions(self):
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controller = VolumeTypeEncryptionController()
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extension = extensions.ControllerExtension(self, 'types', controller)
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return [extension]
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