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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (c) 2017 Cisco and/or its affiliates.
#
# 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.
#
class Flow:
def __init__(self, source, destination):
"""
Constructor.
Args:
source: The source Prefix of this Flow.
destination: The destination Prefix of this Flow.
"""
self.source = source
self.destination = destination
def get_reverse(self):
"""
Make the reverse Flow of this Flow.
Returns:
The reverse Flow.
"""
return Flow(self.destination, self.source)
def __eq__(self, other):
"""
Tests whether two Flows are equal or not.
Args:
other: A Flow instance.
Returns:
True iif self == other.
"""
if self.source and other.source and self.source != other.source:
return False
if self.destination and other.destination and self.destination != other.destination:
return False
return True
def __hash__(self):
# Order is important
return hash((self.source, self.destination))
def __repr__(self):
return "<Flow %s -> %s>" % (self.source, self.destination)
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