125 lines
4.4 KiB
Python
125 lines
4.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack LLC.
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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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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"""RequestContext: context for requests that persist through all of nova."""
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import copy
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import logging
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from heat.openstack.common import local
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from heat.openstack.common import utils
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from heat.common import utils as heat_utils
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LOG = logging.getLogger(__name__)
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def generate_request_id():
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return 'req-' + str(heat_utils.gen_uuid())
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class RequestContext(object):
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"""Security context and request information.
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Represents the user taking a given action within the system.
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"""
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def __init__(self, user_id, project_id, is_admin=None, read_deleted="no",
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roles=None, remote_address=None, timestamp=None,
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request_id=None, auth_token=None, overwrite=True, **kwargs):
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"""
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:param read_deleted: 'no' indicates deleted records are hidden, 'yes'
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indicates deleted records are visible, 'only' indicates that
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*only* deleted records are visible.
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:param overwrite: Set to False to ensure that the greenthread local
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copy of the index is not overwritten.
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:param kwargs: Extra arguments that might be present, but we ignore
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because they possibly came in from older rpc messages.
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"""
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if read_deleted not in ('no', 'yes', 'only'):
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raise ValueError(_("read_deleted can only be one of 'no', "
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"'yes' or 'only', not %r") % read_deleted)
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if kwargs:
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LOG.warn(_('Arguments dropped when creating context: %s') %
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str(kwargs))
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self.user_id = user_id
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self.project_id = project_id
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self.roles = roles or []
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self.is_admin = is_admin
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if self.is_admin is None:
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self.is_admin = 'admin' in [x.lower() for x in self.roles]
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elif self.is_admin and 'admin' not in self.roles:
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self.roles.append('admin')
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self.read_deleted = read_deleted
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self.remote_address = remote_address
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if not timestamp:
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timestamp = utils.utcnow()
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if isinstance(timestamp, basestring):
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timestamp = heat_utils.parse_strtime(timestamp)
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self.timestamp = timestamp
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if not request_id:
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request_id = generate_request_id()
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self.request_id = request_id
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self.auth_token = auth_token
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if overwrite or not hasattr(local.store, 'context'):
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self.update_store()
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def update_store(self):
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local.store.context = self
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def to_dict(self):
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return {'user_id': self.user_id,
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'project_id': self.project_id,
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'is_admin': self.is_admin,
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'read_deleted': self.read_deleted,
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'roles': self.roles,
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'remote_address': self.remote_address,
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'timestamp': heat_utils.strtime(self.timestamp),
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'request_id': self.request_id,
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'auth_token': self.auth_token}
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@classmethod
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def from_dict(cls, values):
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return cls(**values)
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def elevated(self, read_deleted=None, overwrite=False):
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"""Return a version of this context with admin flag set."""
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context = copy.copy(self)
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context.is_admin = True
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if 'admin' not in context.roles:
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context.roles.append('admin')
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if read_deleted is not None:
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context.read_deleted = read_deleted
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return context
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def get_admin_context(read_deleted="no"):
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return RequestContext(user_id=None,
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project_id=None,
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is_admin=True,
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read_deleted=read_deleted,
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overwrite=False)
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