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Diffstat (limited to 'openstack/common/middleware/correlation_id.py')
| -rw-r--r-- | openstack/common/middleware/correlation_id.py | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/openstack/common/middleware/correlation_id.py b/openstack/common/middleware/correlation_id.py new file mode 100644 index 0000000..a3efe34 --- /dev/null +++ b/openstack/common/middleware/correlation_id.py @@ -0,0 +1,29 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2013 Rackspace Hosting +# 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. + +"""Middleware that attaches a correlation id to WSGI request""" + +from openstack.common import uuidutils +from openstack.common import wsgi + + +class CorrelationIdMiddleware(wsgi.Middleware): + + def process_request(self, req): + correlation_id = (req.headers.get("X_CORRELATION_ID") or + uuidutils.generate_uuid()) + req.headers['X_CORRELATION_ID'] = correlation_id |