43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
# VMware vSphere Python SDK
|
|
# Copyright (c) 2008-2015 VMware, Inc. 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.
|
|
|
|
"""
|
|
This module implements the cache decorator
|
|
"""
|
|
__author__ = "VMware, Inc."
|
|
|
|
def Cache(fn):
|
|
""" Function cache decorator """
|
|
def fnCache(*args, **kwargs):
|
|
""" Cache function """
|
|
key = (args and tuple(args) or None,
|
|
kwargs and frozenset(kwargs.items()) or None)
|
|
if key not in fn.__cached__:
|
|
fn.__cached__[key] = cache = fn(*args, **kwargs)
|
|
else:
|
|
cache = fn.__cached__[key]
|
|
return cache
|
|
|
|
def ResetCache():
|
|
""" Reset cache """
|
|
fn.__cached__ = {}
|
|
|
|
setattr(fn, "__cached__", {})
|
|
setattr(fn, "__resetcache__", ResetCache)
|
|
fnCache.__name__ = fn.__name__
|
|
fnCache.__doc__ = fn.__doc__
|
|
fnCache.__dict__.update(fn.__dict__)
|
|
return fnCache
|