nova/nova/policies/volumes_attachments.py
zhangbailin fcf5863662 Separate update and swap volume policies
This patch changes the volume update policy to be
'rule:system_admin_or_owner' to allow instance owners to update
attachment details like delete_on_termination. It creates a new
volume swap policy element with the old admin-only behavior, and
makes the volume update code check the appropriate policy based
on what action is being performed.

Co-Authored-By: Dan Smith <dansmith@redhat.com>

Partial implement blueprint destroy-instance-with-datavolume
Change-Id: I2cbe37b65ceac2efb3b252460dc01d17474e6343
2020-04-08 08:21:26 +00:00

103 lines
3.4 KiB
Python

# Copyright 2016 Cloudbase Solutions Srl
# 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.
from oslo_policy import policy
from nova.policies import base
POLICY_ROOT = 'os_compute_api:os-volumes-attachments:%s'
volumes_attachments_policies = [
policy.DocumentedRuleDefault(
name=POLICY_ROOT % 'index',
check_str=base.PROJECT_READER_OR_SYSTEM_READER,
description="List volume attachments for an instance",
operations=[
{'method': 'GET',
'path': '/servers/{server_id}/os-volume_attachments'
}
],
scope_types=['system', 'project']),
policy.DocumentedRuleDefault(
name=POLICY_ROOT % 'create',
check_str=base.PROJECT_MEMBER_OR_SYSTEM_ADMIN,
description="Attach a volume to an instance",
operations=[
{
'method': 'POST',
'path': '/servers/{server_id}/os-volume_attachments'
}
],
scope_types=['system', 'project']),
policy.DocumentedRuleDefault(
name=POLICY_ROOT % 'show',
check_str=base.PROJECT_READER_OR_SYSTEM_READER,
description="Show details of a volume attachment",
operations=[
{
'method': 'GET',
'path':
'/servers/{server_id}/os-volume_attachments/{volume_id}'
}
],
scope_types=['system', 'project']),
policy.DocumentedRuleDefault(
name=POLICY_ROOT % 'update',
check_str=base.PROJECT_MEMBER_OR_SYSTEM_ADMIN,
description="""Update a volume attachment.
New 'update' policy about 'swap + update' request (which is possible
only >2.85) only <swap policy> is checked. We expect <swap policy> to be
always superset of this policy permission.
""",
operations=[
{
'method': 'PUT',
'path':
'/servers/{server_id}/os-volume_attachments/{volume_id}'
}
],
scope_types=['system', 'project']),
policy.DocumentedRuleDefault(
name=POLICY_ROOT % 'swap',
check_str=base.SYSTEM_ADMIN,
description="Update a volume attachment with a different volumeId",
operations=[
{
'method': 'PUT',
'path':
'/servers/{server_id}/os-volume_attachments/{volume_id}'
}
],
scope_types=['system']),
policy.DocumentedRuleDefault(
name=POLICY_ROOT % 'delete',
check_str=base.PROJECT_MEMBER_OR_SYSTEM_ADMIN,
description="Detach a volume from an instance",
operations=[
{
'method': 'DELETE',
'path':
'/servers/{server_id}/os-volume_attachments/{volume_id}'
}
],
scope_types=['system', 'project']),
]
def list_rules():
return volumes_attachments_policies