1 # Copyright 2017 Intel Research and Development Ireland Limited
2 # *************************************************************
4 # This file is part of OSM Monitoring module
5 # All Rights Reserved to Intel Corporation
7 # Licensed under the Apache License, Version 2.0 (the "License"); you may
8 # not use this file except in compliance with the License. You may obtain
9 # a copy of the License at
11 # http://www.apache.org/licenses/LICENSE-2.0
13 # Unless required by applicable law or agreed to in writing, software
14 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
16 # License for the specific language governing permissions and limitations
19 # For those usages not covered by the Apache License, Version 2.0 please
20 # contact: helena.mcgough@intel.com or adrian.hoban@intel.com
22 """Simple singleton class."""
24 from __future__
import unicode_literals
26 __author__
= "Helena McGough"
29 class Singleton(object):
30 """Simple singleton class."""
32 def __init__(self
, decorated
):
33 """Initialize singleton instance."""
34 self
._decorated
= decorated
37 """Return singleton instance."""
40 except AttributeError:
41 self
._instance
= self
._decorated
()