142 lines
4.3 KiB
Python
142 lines
4.3 KiB
Python
# Copyright 2012 OpenStack Foundation.
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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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"""Context: context for security/db session."""
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import copy
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import datetime
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from oslo_context import context as oslo_context
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from oslo_db.sqlalchemy import enginefacade
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from tacker.db import api as db_api
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from tacker import policy
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class ContextBase(oslo_context.RequestContext):
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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, tenant_id, is_admin=None, roles=None,
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timestamp=None, request_id=None, tenant_name=None,
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user_name=None, overwrite=True, auth_token=None,
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**kwargs):
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"""Object initialization.
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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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super(ContextBase, self).__init__(auth_token=auth_token,
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user=user_id, tenant=tenant_id,
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is_admin=is_admin,
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request_id=request_id,
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overwrite=overwrite,
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roles=roles)
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self.user_name = user_name
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self.tenant_name = tenant_name
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if not timestamp:
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timestamp = datetime.datetime.utcnow()
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self.timestamp = timestamp
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if self.is_admin is None:
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self.is_admin = policy.check_is_admin(self)
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@property
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def project_id(self):
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return self.tenant
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@property
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def tenant_id(self):
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return self.tenant
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@tenant_id.setter
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def tenant_id(self, tenant_id):
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self.tenant = tenant_id
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@property
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def user_id(self):
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return self.user
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@user_id.setter
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def user_id(self, user_id):
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self.user = user_id
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def to_dict(self):
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context = super(ContextBase, self).to_dict()
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context.update({
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'user_id': self.user_id,
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'tenant_id': self.tenant_id,
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'project_id': self.project_id,
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'timestamp': str(self.timestamp),
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'tenant_name': self.tenant_name,
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'project_name': self.tenant_name,
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'user_name': self.user_name,
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})
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return context
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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):
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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 [x.lower() for x in context.roles]:
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context.roles = context.roles + ["admin"]
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return context
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@enginefacade.transaction_context_provider
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class ContextBaseWithSession(ContextBase):
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pass
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class Context(ContextBaseWithSession):
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def __init__(self, *args, **kwargs):
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super(Context, self).__init__(*args, **kwargs)
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self._session = None
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@property
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def session(self):
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# TODO(akamyshnikova): checking for session attribute won't be needed
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# when reader and writer will be used
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if hasattr(super(Context, self), 'session'):
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return super(Context, self).session
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if self._session is None:
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self._session = db_api.get_session()
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return self._session
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def get_admin_context():
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return Context(user_id=None,
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tenant_id=None,
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is_admin=True,
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overwrite=False)
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def get_admin_context_without_session():
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return ContextBase(user_id=None,
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tenant_id=None,
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is_admin=True)
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