## tempest.lib.common.utils.misc

updated: December 08, 2017

# Source code for tempest.lib.common.utils.misc

    # Copyright 2012 OpenStack Foundation
    # 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.
    from oslo_log import log as logging

    from tempest.lib.common.utils import test_utils

    LOG = logging.getLogger(__name__)

    def singleton(cls):
        """Simple wrapper for classes that should only have a single instance."""
        instances = {}

        def getinstance():
            if cls not in instances:
                instances[cls] = cls()
            return instances[cls]
        return getinstance

    def find_test_caller(*args, **kwargs):
        LOG.warning("tempest.lib.common.utils.misc.find_test_caller is deprecated "
                    "in favor of tempest.lib.common.utils.test_utils."
                    "find_test_caller")
        test_utils.find_test_caller(*args, **kwargs)

updated: December 08, 2017

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