118 lines
4.1 KiB
Python
118 lines
4.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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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 random
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from nova import exception
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from nova import utils
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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, project, is_admin=None, read_deleted=False,
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remote_address=None, timestamp=None, request_id=None):
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if hasattr(user, 'id'):
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self._user = user
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self.user_id = user.id
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else:
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self._user = None
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self.user_id = user
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if hasattr(project, 'id'):
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self._project = project
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self.project_id = project.id
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else:
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self._project = None
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self.project_id = project
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if is_admin is None:
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if self.user_id and self.user:
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self.is_admin = self.user.is_admin()
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else:
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self.is_admin = False
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else:
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self.is_admin = is_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, str) or isinstance(timestamp, unicode):
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timestamp = utils.parse_isotime(timestamp)
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self.timestamp = timestamp
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if not request_id:
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chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-'
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request_id = ''.join([random.choice(chars) for x in xrange(20)])
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self.request_id = request_id
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@property
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def user(self):
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# NOTE(vish): Delay import of manager, so that we can import this
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# file from manager.
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from nova.auth import manager
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if not self._user:
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try:
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self._user = manager.AuthManager().get_user(self.user_id)
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except exception.NotFound:
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pass
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return self._user
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@property
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def project(self):
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# NOTE(vish): Delay import of manager, so that we can import this
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# file from manager.
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from nova.auth import manager
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if not self._project:
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try:
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auth_manager = manager.AuthManager()
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self._project = auth_manager.get_project(self.project_id)
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except exception.NotFound:
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pass
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return self._project
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def to_dict(self):
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return {'user': self.user_id,
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'project': 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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'remote_address': self.remote_address,
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'timestamp': utils.isotime(self.timestamp),
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'request_id': self.request_id}
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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=False):
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"""Return a version of this context with admin flag set."""
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return RequestContext(self.user_id,
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self.project_id,
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True,
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read_deleted,
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self.remote_address,
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self.timestamp,
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self.request_id)
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def get_admin_context(read_deleted=False):
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return RequestContext(None, None, True, read_deleted)
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