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# Copyright 2012 Managed I.T.
#
# Author: Kiall Mac Innes <kiall@managedit.ie>
#
# 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.
import itertools
from designate.openstack.common import context
from designate.openstack.common import log as logging
from designate import policy
LOG = logging.getLogger(__name__)
class DesignateContext(context.RequestContext):
def __init__(self, auth_token=None, user=None, tenant=None, is_admin=False,
read_only=False, show_deleted=False, request_id=None,
roles=[], service_catalog=None):
super(DesignateContext, self).__init__(
auth_token=auth_token,
user=user,
tenant=tenant,
is_admin=is_admin,
read_only=read_only,
show_deleted=show_deleted,
request_id=request_id)
self._original_tenant_id = None
self.roles = roles
self.service_catalog = service_catalog
def sudo(self, tenant_id, force=False):
if force:
allowed_sudo = True
else:
# We use exc=None here since the context is built early in the
# request lifecycle, outside of our ordinary error handling.
# For now, we silently ignore failed sudo requests.
target = {'tenant_id': tenant_id}
allowed_sudo = policy.check('use_sudo', self, target, exc=None)
if allowed_sudo:
LOG.warn('Accepted sudo from user_id %s for tenant_id %s'
% (self.user_id, tenant_id))
self.original_tenant_id = self.tenant_id
self.tenant_id = tenant_id
else:
LOG.warn('Rejected sudo from user_id %s for tenant_id %s'
% (self.user_id, tenant_id))
def to_dict(self):
d = super(DesignateContext, self).to_dict()
d.update({
'user_id': self.user_id,
'tenant_id': self.tenant_id,
'original_tenant_id': self.original_tenant_id,
'roles': self.roles,
'service_catalog': self.service_catalog
})
return d
@property
def user_id(self):
return self.user
@user_id.setter
def user_id(self, value):
self.user = value
@property
def tenant_id(self):
return self.tenant
@tenant_id.setter
def tenant_id(self, value):
self.tenant = value
@property
def original_tenant_id(self):
if self._original_tenant_id:
return self._original_tenant_id
else:
return self.tenant
@original_tenant_id.setter
def original_tenant_id(self, value):
self._original_tenant_id = value
@classmethod
def get_admin_context(cls, **kwargs):
kwargs['is_admin'] = True
kwargs['roles'] = ['admin']
return cls(None, **kwargs)
@classmethod
def get_context_from_function_and_args(cls, function, args, kwargs):
"""
Find an arg of type DesignateContext and return it.
This is useful in a couple of decorators where we don't
know much about the function we're wrapping.
"""
for arg in itertools.chain(kwargs.values(), args):
if isinstance(arg, cls):
return arg
return None
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