| #!/usr/bin/env python |
| # -*- encoding: utf-8 -*- |
| |
| # Copyright 2016 Twitter. 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. |
| '''serializer.py: common python serializer for heron''' |
| from abc import abstractmethod |
| |
| try: |
| import cPickle as pickle |
| except: |
| import pickle |
| |
| import heronpy.api.cloudpickle as cloudpickle |
| |
| class IHeronSerializer(object): |
| """Serializer interface for Heron""" |
| @abstractmethod |
| def initialize(self, config): |
| """Initializes the serializer""" |
| pass |
| |
| @abstractmethod |
| def serialize(self, obj): |
| """Serialize an object |
| |
| :param obj: The object to be serialized |
| :returns: Serialized object as byte string |
| """ |
| pass |
| |
| @abstractmethod |
| def deserialize(self, input_str): |
| """Deserialize an object |
| |
| :param input_str: Serialized object as byte string |
| :returns: Deserialized object |
| """ |
| pass |
| |
| class PythonSerializer(IHeronSerializer): |
| """Default serializer""" |
| def initialize(self, config=None): |
| pass |
| |
| def serialize(self, obj): |
| return cloudpickle.dumps(obj) |
| |
| def deserialize(self, input_str): |
| return pickle.loads(input_str) |
| |
| default_serializer = PythonSerializer() |