2962d9d871
Openstackclient is taking the hit for importing oslo.config (which is significant) just because we are doing an opportunistic load at import time. Change the opportunistic load to also happen at runtime to remove this import. This has no user facing effect. Change-Id: I3983a19fbe82cb1d360b5b5aec75b2697efa232d
41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
# 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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cfg = None
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_NOT_FOUND = object()
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def get_oslo_config():
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"""Runtime load the oslo.config object.
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In performance optimization of openstackclient it was determined that even
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optimistically loading oslo.config if available had a performance cost.
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Given that we used to only raise the ImportError when the function was
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called also attempt to do the import to do everything at runtime.
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"""
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global cfg
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# First Call
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if not cfg:
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try:
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from oslo_config import cfg
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except ImportError:
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cfg = _NOT_FOUND
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if cfg is _NOT_FOUND:
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raise ImportError("oslo.config is not an automatic dependency of "
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"keystoneauth. If you wish to use oslo.config "
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"you need to import it into your application's "
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"requirements file. ")
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return cfg
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