214 lines
7.9 KiB
Python
214 lines
7.9 KiB
Python
# Copyright 2016 NTT DATA
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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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"""
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RequestContext: context for requests that persist through all of masakari.
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"""
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import copy
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from keystoneauth1.access import service_catalog as ksa_service_catalog
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from keystoneauth1 import plugin
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from oslo_context import context
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from oslo_db.sqlalchemy import enginefacade
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from oslo_log import log as logging
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from oslo_utils import timeutils
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import six
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from masakari.i18n import _
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from masakari import policy
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from masakari import utils
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LOG = logging.getLogger(__name__)
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class _ContextAuthPlugin(plugin.BaseAuthPlugin):
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"""A keystoneauth auth plugin that uses the values from the Context.
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Ideally we would use the plugin provided by auth_token middleware however
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this plugin isn't serialized yet so we construct one from the serialized
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auth data.
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"""
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def __init__(self, auth_token, sc):
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super(_ContextAuthPlugin, self).__init__()
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self.auth_token = auth_token
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self.service_catalog = ksa_service_catalog.ServiceCatalogV2(sc)
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def get_token(self, *args, **kwargs):
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return self.auth_token
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def get_endpoint(self, session, service_type=None, interface=None,
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region_name=None, service_name=None, **kwargs):
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return self.service_catalog.url_for(service_type=service_type,
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service_name=service_name,
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interface=interface,
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region_name=region_name)
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@enginefacade.transaction_context_provider
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class RequestContext(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=None, project_id=None,
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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,
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user_name=None, project_name=None, service_catalog=None,
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user_auth_plugin=None, **kwargs):
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""":param read_deleted: 'no' indicates deleted records are hidden,
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'yes' indicates deleted records are visible,
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'only' indicates that *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 user_auth_plugin: The auth plugin for the current request's
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authentication data.
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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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user = kwargs.pop('user', None)
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tenant = kwargs.pop('tenant', None)
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super(RequestContext, self).__init__(
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auth_token=auth_token,
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user=user_id or user,
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tenant=project_id or tenant,
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domain=kwargs.pop('domain', None),
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user_domain=kwargs.pop('user_domain', None),
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project_domain=kwargs.pop('project_domain', None),
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is_admin=is_admin,
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read_only=kwargs.pop('read_only', False),
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show_deleted=kwargs.pop('show_deleted', False),
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request_id=request_id,
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resource_uuid=kwargs.pop('resource_uuid', None),
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overwrite=overwrite,
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roles=roles,
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is_admin_project=kwargs.pop('is_admin_project', True))
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# oslo_context's RequestContext.to_dict() generates this field, we can
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# safely ignore this as we don't use it.
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kwargs.pop('user_identity', None)
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if kwargs:
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LOG.debug('Arguments dropped when creating context: %s',
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str(kwargs))
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# FIXME: user_id and project_id duplicate information that is
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# already present in the oslo_context's RequestContext. We need to
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# get rid of them.
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self.user_id = user_id
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self.project_id = project_id
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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 = timeutils.utcnow()
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if isinstance(timestamp, six.string_types):
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timestamp = timeutils.parse_strtime(timestamp)
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self.timestamp = timestamp
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if service_catalog:
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# Only include required parts of service_catalog
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self.service_catalog = [
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s for s in service_catalog if s.get('type') in (
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'compute', 'identity')]
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else:
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# if list is empty or none
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self.service_catalog = []
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self.user_name = user_name
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self.project_name = project_name
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self.is_admin = is_admin
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self.user_auth_plugin = user_auth_plugin
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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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def get_auth_plugin(self):
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if self.user_auth_plugin:
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return self.user_auth_plugin
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else:
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return _ContextAuthPlugin(self.auth_token, self.service_catalog)
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def _get_read_deleted(self):
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return self._read_deleted
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def _set_read_deleted(self, read_deleted):
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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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self._read_deleted = read_deleted
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def _del_read_deleted(self):
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del self._read_deleted
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read_deleted = property(_get_read_deleted, _set_read_deleted,
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_del_read_deleted)
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def to_dict(self):
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values = super(RequestContext, self).to_dict()
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# FIXME: defensive hasattr() checks need to be
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# removed once we figure out why we are seeing stack
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# traces
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values.update({
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'user_id': getattr(self, 'user_id', None),
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'project_id': getattr(self, 'project_id', None),
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'is_admin': getattr(self, 'is_admin', None),
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'read_deleted': getattr(self, 'read_deleted', 'no'),
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'remote_address': getattr(self, 'remote_address', None),
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'timestamp': utils.strtime(self.timestamp) if hasattr(
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self, 'timestamp') else None,
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'request_id': getattr(self, 'request_id', None),
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'user_name': getattr(self, 'user_name', None),
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'service_catalog': getattr(self, 'service_catalog', None),
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'project_name': getattr(self, 'project_name', None)
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})
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return values
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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):
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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.roles must be deepcopied to leave original roles
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# without changes
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context.roles = copy.deepcopy(self.roles)
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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 __str__(self):
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return "<Context %s>" % self.to_dict()
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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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