0331f8a58a
Fixes: Bug 1214176 Change-Id: Ie937081a53d377671b8b88f422642c8131002f88
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 OpenStack Foundation
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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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import functools
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from keystone.openstack.common import importutils
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class Manager(object):
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"""Base class for intermediary request layer.
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The Manager layer exists to support additional logic that applies to all
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or some of the methods exposed by a service that are not specific to the
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HTTP interface.
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It also provides a stable entry point to dynamic backends.
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An example of a probable use case is logging all the calls.
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"""
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def __init__(self, driver_name):
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self.driver = importutils.import_object(driver_name)
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def __getattr__(self, name):
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"""Forward calls to the underlying driver."""
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f = getattr(self.driver, name)
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@functools.wraps(f)
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def _wrapper(*args, **kw):
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return f(*args, **kw)
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setattr(self, name, _wrapper)
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return _wrapper
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