Source code for grpc.framework.foundation.stream

# Copyright 2015 gRPC authors.
#
# 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.
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"""Interfaces related to streams of values or objects."""

import abc

import six


[docs]class Consumer(six.with_metaclass(abc.ABCMeta)): """Interface for consumers of finite streams of values or objects."""
[docs] @abc.abstractmethod def consume(self, value): """Accepts a value. Args: value: Any value accepted by this Consumer. """ raise NotImplementedError()
[docs] @abc.abstractmethod def terminate(self): """Indicates to this Consumer that no more values will be supplied.""" raise NotImplementedError()
[docs] @abc.abstractmethod def consume_and_terminate(self, value): """Supplies a value and signals that no more values will be supplied. Args: value: Any value accepted by this Consumer. """ raise NotImplementedError()