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- #
- # Copyright 2019 The FATE Authors. 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.
- #
- import hashlib
- class NamingService(object):
- __instance = None
- @classmethod
- def get_instance(cls):
- if cls.__instance is None:
- raise EnvironmentError("naming service not set")
- return cls.__instance
- @classmethod
- def set_instance(cls, instance):
- prev = cls.__instance
- cls.__instance = instance
- return prev
- def __init__(self, init_name="ss"):
- self._name = hashlib.md5(init_name.encode("utf-8")).hexdigest()
- def next(self):
- self._name = hashlib.md5(self._name.encode("utf-8")).hexdigest()
- return self._name
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