vmware-nsx/quantum/context.py
Yong Sheng Gong afb0b7b141 Introduce files from openstack common.
Because the openstack common project does not stick to latest pep8 rules,
I have to exclude some bad-ruled files in the tox.ini and run_tests.sh.
However pep8 does not support exclude option in the format quantum/openstack/common,
so I have to exclude some of openstack common files one by one.

Also, I have changed the Qunatum Context to base on the common context.

I does not update the setup.py in our openstack common dir and the one
under quantum top dir, since it should be maintained in a consistent way
across all of openstack projects.

After this introduction, we are ready for notification feature.

Change-Id: I2729c2dc3958835374c88d704e842e613785ec14
2012-07-17 06:41:14 +08:00

114 lines
3.8 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack LLC.
# 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.
"""Context: context for security/db session."""
import copy
import logging
from datetime import datetime
from quantum.db import api as db_api
from quantum.openstack.common import context as common_context
LOG = logging.getLogger(__name__)
class Context(common_context.RequestContext):
"""Security context and request information.
Represents the user taking a given action within the system.
"""
def __init__(self, user_id, tenant_id, is_admin=None, read_deleted="no",
roles=None, timestamp=None, **kwargs):
"""
:param read_deleted: 'no' indicates deleted records are hidden, 'yes'
indicates deleted records are visible, 'only' indicates that
*only* deleted records are visible.
"""
if kwargs:
LOG.warn(_('Arguments dropped when creating '
'context: %s') % str(kwargs))
super(Context, self).__init__(user=user_id, tenant=tenant_id,
is_admin=is_admin)
self.user_id = user_id
self.tenant_id = tenant_id
self.roles = roles or []
if self.is_admin is None:
self.is_admin = 'admin' in [x.lower() for x in self.roles]
elif self.is_admin and 'admin' not in [x.lower() for x in self.roles]:
self.roles.append('admin')
self.read_deleted = read_deleted
if not timestamp:
timestamp = datetime.utcnow()
self.timestamp = timestamp
self._session = None
def _get_read_deleted(self):
return self._read_deleted
def _set_read_deleted(self, read_deleted):
if read_deleted not in ('no', 'yes', 'only'):
raise ValueError(_("read_deleted can only be one of 'no', "
"'yes' or 'only', not %r") % read_deleted)
self._read_deleted = read_deleted
def _del_read_deleted(self):
del self._read_deleted
read_deleted = property(_get_read_deleted, _set_read_deleted,
_del_read_deleted)
@property
def session(self):
if self._session is None:
self._session = db_api.get_session()
return self._session
def to_dict(self):
return {'user_id': self.user_id,
'tenant_id': self.tenant_id,
'is_admin': self.is_admin,
'read_deleted': self.read_deleted,
'roles': self.roles,
'timestamp': str(self.timestamp)}
@classmethod
def from_dict(cls, values):
return cls(**values)
def elevated(self, read_deleted=None):
"""Return a version of this context with admin flag set."""
context = copy.copy(self)
context.is_admin = True
if 'admin' not in [x.lower() for x in context.roles]:
context.roles.append('admin')
if read_deleted is not None:
context.read_deleted = read_deleted
return context
def get_admin_context(read_deleted="no"):
return Context(user_id=None,
tenant_id=None,
is_admin=True,
read_deleted=read_deleted)