63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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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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Middleware that attaches a context to the WSGI request
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"""
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from heat.common import importutils
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from heat.common import wsgi
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from heat.common import context
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class ContextMiddleware(wsgi.Middleware):
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def __init__(self, app, options):
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self.options = options
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super(ContextMiddleware, self).__init__(app)
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def make_context(self, *args, **kwargs):
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"""
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Create a context with the given arguments.
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"""
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# Determine the context class to use
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ctxcls = context.RequestContext
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if 'context_class' in self.options:
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ctxcls = importutils.import_class(self.options['context_class'])
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return ctxcls(*args, **kwargs)
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def process_request(self, req):
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"""
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Extract any authentication information in the request and
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construct an appropriate context from it.
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"""
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# Use the default empty context, with admin turned on for
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# backwards compatibility
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req.context = self.make_context(is_admin=True)
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def filter_factory(global_conf, **local_conf):
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"""
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Factory method for paste.deploy
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"""
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conf = global_conf.copy()
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conf.update(local_conf)
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def filter(app):
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return ContextMiddleware(app, conf)
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return filter
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