gce-api/gceapi/context.py

142 lines
4.8 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 OpenStack Foundation
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
"""RequestContext: context for requests that persist through all of gceapi."""
from oslo_context import context
from oslo_log import log as logging
from oslo_utils import timeutils
import six
from gceapi import exception
from gceapi.i18n import _
LOG = logging.getLogger(__name__)
class RequestContext(context.RequestContext):
"""Security context and request information.
Represents the user taking a given action within the system.
"""
def __init__(self, user_id, project_id, is_admin=None, read_deleted="no",
roles=None, remote_address=None, timestamp=None,
request_id=None, auth_token=None, overwrite=True,
user_name=None, project_name=None,
service_catalog=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.
:param overwrite: Set to False to ensure that the greenthread local
copy of the index is not overwritten.
:param kwargs: Extra arguments that might be present, but we ignore
because they possibly came in from older rpc messages.
"""
super(RequestContext, self).__init__(auth_token=auth_token,
user=user_id,
tenant=project_id,
is_admin=is_admin,
request_id=request_id,
overwrite=overwrite,
roles=roles)
if kwargs:
LOG.warning(_('Arguments dropped when creating context: %s') %
str(kwargs))
self.user_id = user_id
self.project_id = project_id
self.read_deleted = read_deleted
self.remote_address = remote_address
if not timestamp:
timestamp = timeutils.utcnow()
if isinstance(timestamp, six.string_types):
timestamp = timeutils.parse_strtime(timestamp)
self.timestamp = timestamp
self.service_catalog = service_catalog
self.user_name = user_name
self.project_name = project_name
self.operation = None
self.operation_start_time = None
self.operation_get_progress_method = None
self.operation_item_id = None
self.operation_data = {}
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)
def to_dict(self):
values = super(RequestContext, self).to_dict()
values.update({
'user_id': self.user_id,
'project_id': self.project_id,
'read_deleted': self.read_deleted,
'remote_address': self.remote_address,
'timestamp': self.timestamp.isoformat(),
'user_name': self.user_name,
'project_name': self.project_name,
'service_catalog': self.service_catalog
})
return values
@classmethod
def from_dict(cls, values):
return cls(**values)
def is_user_context(context):
"""Indicates if the request context is a normal user."""
if not context:
return False
if context.is_admin:
return False
if not context.user_id or not context.project_id:
return False
return True
def require_context(ctxt):
"""Raise exception.NotAuthorized() if context is not a user or an
admin context.
"""
if not ctxt.is_admin and not is_user_context(ctxt):
raise exception.NotAuthorized()