# coding: utf-8
# Copyright (c) 2019  PaddlePaddle 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 paddlehub as hub


class ImageModelService(object):
    @classmethod
    def instance(cls):
        if not hasattr(cls, "_instance"):
            cls._instance = cls()
        return cls._instance

    @classmethod
    def get_module(cls, name):
        module = hub.Module(name=name)
        return module

    def _initialize(self):
        pass

    def _pre_processing(self):
        pass

    def _inference(self):
        pass

    def _post_processing(self):
        pass
