OpenStack Study: audit.py

**** CubicPower OpenStack Study ****

# Copyright (c) 2013 OpenStack Foundation

# All Rights Reserved.

#

# 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.

"""

Attach open standard audit information to request.environ

AuditMiddleware filter should be place after Keystone's auth_token middleware

in the pipeline so that it can utilise the information Keystone provides.

"""

from pycadf.audit import api as cadf_api

from neutron.openstack.common.middleware import notifier

**** CubicPower OpenStack Study ****

class AuditMiddleware(notifier.RequestNotifier):

**** CubicPower OpenStack Study ****

    def __init__(self, app, **conf):

        super(AuditMiddleware, self).__init__(app, **conf)

        self.cadf_audit = cadf_api.OpenStackAuditApi()

    @notifier.log_and_ignore_error

**** CubicPower OpenStack Study ****

    def process_request(self, request):

        self.cadf_audit.append_audit_event(request)

        super(AuditMiddleware, self).process_request(request)

    @notifier.log_and_ignore_error

**** CubicPower OpenStack Study ****

    def process_response(self, request, response,

                         exception=None, traceback=None):

        self.cadf_audit.mod_audit_event(request, response)

        super(AuditMiddleware, self).process_response(request, response,

                                                      exception, traceback)