github.com/muhammedhassanm/blockchain@v0.0.0-20200120143007-697261defd4d/sawtooth-core-master/sdk/python/sawtooth_sdk/consensus/driver.py (about)

     1  # Copyright 2018 Intel Corporation
     2  #
     3  # Licensed under the Apache License, Version 2.0 (the "License");
     4  # you may not use this file except in compliance with the License.
     5  # You may obtain a copy of the License at
     6  #
     7  #     http://www.apache.org/licenses/LICENSE-2.0
     8  #
     9  # Unless required by applicable law or agreed to in writing, software
    10  # distributed under the License is distributed on an "AS IS" BASIS,
    11  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  # See the License for the specific language governing permissions and
    13  # limitations under the License.
    14  # -----------------------------------------------------------------------------
    15  
    16  import abc
    17  
    18  
    19  class Driver(metaclass=abc.ABCMeta):
    20      @abc.abstractmethod
    21      def __init__(self, engine):
    22          pass
    23  
    24      @abc.abstractmethod
    25      def start(self, endpoint):
    26          pass
    27  
    28      @abc.abstractmethod
    29      def stop(self):
    30          pass