30 lines
1.1 KiB
Python
30 lines
1.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2013 Rackspace Hosting
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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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"""Middleware that attaches a correlation id to WSGI request"""
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from openstack.common.middleware import base
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from openstack.common import uuidutils
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class CorrelationIdMiddleware(base.Middleware):
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def process_request(self, req):
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correlation_id = (req.headers.get("X_CORRELATION_ID") or
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uuidutils.generate_uuid())
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req.headers['X_CORRELATION_ID'] = correlation_id
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