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router_engine_test.py
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router_engine_test.py
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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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 os
import sys
import mock # noqa F401: imported for side-effects (installs mock definitions for tests) # pylint: disable=unused-import
sys.path.append(os.path.join(os.environ["SOURCE_DIR"], "python"))
from system_test import unittest
from system_test import main_module
from qpid_dispatch.management.entity import EntityBase
from qpid_dispatch_internal.router.data import LinkState, MessageHELLO
from qpid_dispatch_internal.router.engine import HelloProtocol, PathEngine
class Adapter:
def __init__(self, domain):
self._domain = domain
def log(self, level, text):
print("Adapter.log(%d): domain=%s, text=%s" % (level, self._domain, text))
def send(self, dest, opcode, body):
print("Adapter.send: domain=%s, dest=%s, opcode=%s, body=%s" % (self._domain, dest, opcode, body))
def remote_bind(self, subject, peer):
print("Adapter.remote_bind: subject=%s, peer=%s" % (subject, peer))
def remote_unbind(self, subject, peer):
print("Adapter.remote_unbind: subject=%s, peer=%s" % (subject, peer))
def node_updated(self, address, reachable, neighbor, link_bit, router_bit):
print("Adapter.node_updated: address=%s, reachable=%r, neighbor=%r, link_bit=%d, router_bit=%d" %
(address, reachable, neighbor, link_bit, router_bit))
class DataTest(unittest.TestCase):
def test_link_state(self):
ls = LinkState(None, 'R1', 1, {'R2': 1, 'R3': 1})
self.assertEqual(ls.id, 'R1')
self.assertEqual(ls.ls_seq, 1)
self.assertEqual(ls.peers, {'R2': 1, 'R3': 1})
ls.bump_sequence()
self.assertEqual(ls.id, 'R1')
self.assertEqual(ls.ls_seq, 2)
self.assertEqual(ls.peers, {'R2': 1, 'R3': 1})
result = ls.add_peer('R4', 5)
self.assertTrue(result)
self.assertEqual(ls.peers, {'R2': 1, 'R3': 1, 'R4': 5})
result = ls.add_peer('R2', 1)
self.assertFalse(result)
self.assertEqual(ls.peers, {'R2': 1, 'R3': 1, 'R4': 5})
result = ls.del_peer('R3')
self.assertTrue(result)
self.assertEqual(ls.peers, {'R2': 1, 'R4': 5})
result = ls.del_peer('R5')
self.assertFalse(result)
self.assertEqual(ls.peers, {'R2': 1, 'R4': 5})
encoded = ls.to_dict()
new_ls = LinkState(encoded)
self.assertEqual(new_ls.id, 'R1')
self.assertEqual(new_ls.ls_seq, 2)
self.assertEqual(new_ls.peers, {'R2': 1, 'R4': 5})
def test_hello_message(self):
msg1 = MessageHELLO(None, 'R1', ['R2', 'R3', 'R4'])
self.assertEqual(msg1.get_opcode(), "HELLO")
self.assertEqual(msg1.id, 'R1')
self.assertEqual(msg1.seen_peers, ['R2', 'R3', 'R4'])
encoded = msg1.to_dict()
msg2 = MessageHELLO(encoded)
self.assertEqual(msg2.get_opcode(), "HELLO")
self.assertEqual(msg2.id, 'R1')
self.assertEqual(msg2.seen_peers, ['R2', 'R3', 'R4'])
self.assertTrue(msg2.is_seen('R3'))
self.assertFalse(msg2.is_seen('R9'))
class NodeTrackerTest(unittest.TestCase):
def log(self, level, text):
pass
def add_neighbor_router(self, address, router_bit, link_bit):
self.address = address
self.router_bit = router_bit
self.link_bit = link_bit
self.calls += 1
def del_neighbor_router(self, router_id, router_bit):
self.address = None
self.router_bit = router_bit
self.link_bit = None
self.calls += 1
def add_remote_router(self, address, router_bit):
self.address = address
self.router_bit = router_bit
self.link_bit = None
self.calls += 1
def del_remote_router(self, router_id, router_bit):
self.address = None
self.router_bit = router_bit
self.link_bit = None
self.calls += 1
def reset(self):
self.address = None
self.router_bit = None
self.link_bit = None
self.calls = 0
class NeighborTest(unittest.TestCase):
def log(self, level, text):
pass
def log_hello(self, level, text):
pass
def send(self, dest, msg):
self.sent.append((dest, msg))
def neighbor_refresh(self, node_id, ProtocolVersion, instance, link_id, cost, now):
self.neighbors[node_id] = (instance, link_id, cost, now)
def setUp(self):
super().setUp()
self.sent = []
self.neighbors = {}
self.id = "R1"
self.instance = 0
# Fake configuration
self.config = EntityBase({
'helloIntervalSeconds' : 1.0,
'helloMaxAgeSeconds' : 3.0,
'raIntervalSeconds' : 30.0,
'remoteLsMaxAgeSeconds' : 60.0})
self.neighbors = {}
def test_hello_sent(self):
self.sent = []
self.local_link_state = None
self.engine = HelloProtocol(self, self)
self.engine.tick(1.0)
self.assertEqual(len(self.sent), 1)
dest, msg = self.sent.pop(0)
self.assertEqual(dest, "amqp:/_local/qdhello")
self.assertEqual(msg.get_opcode(), "HELLO")
self.assertEqual(msg.id, self.id)
self.assertEqual(msg.seen_peers, [])
self.assertEqual(self.local_link_state, None)
def test_sees_peer(self):
self.sent = []
self.neighbors = {}
self.engine = HelloProtocol(self, self)
self.engine.handle_hello(MessageHELLO(None, 'R2', []), 2.0, 0, 1)
self.engine.tick(5.0)
self.assertEqual(len(self.sent), 1)
dest, msg = self.sent.pop(0)
self.assertEqual(msg.seen_peers, ['R2'])
def test_establish_peer(self):
self.sent = []
self.neighbors = {}
self.engine = HelloProtocol(self, self)
self.engine.handle_hello(MessageHELLO(None, 'R2', ['R1']), 0.5, 0, 1)
self.engine.tick(1.0)
self.engine.tick(2.0)
self.engine.tick(3.0)
self.assertEqual(len(self.neighbors), 1)
self.assertEqual(list(self.neighbors.keys()), ['R2'])
def test_establish_multiple_peers(self):
self.sent = []
self.neighbors = {}
self.engine = HelloProtocol(self, self)
self.engine.handle_hello(MessageHELLO(None, 'R2', ['R1']), 0.5, 0, 1)
self.engine.tick(1.0)
self.engine.handle_hello(MessageHELLO(None, 'R3', ['R1', 'R2']), 1.5, 0, 1)
self.engine.tick(2.0)
self.engine.handle_hello(MessageHELLO(None, 'R4', ['R1']), 2.5, 0, 1)
self.engine.handle_hello(MessageHELLO(None, 'R5', ['R2']), 2.5, 0, 1)
self.engine.handle_hello(MessageHELLO(None, 'R6', ['R1']), 2.5, 0, 1)
self.engine.tick(3.0)
keys = sorted(self.neighbors.keys())
self.assertEqual(keys, ['R2', 'R3', 'R4', 'R6'])
class PathTest(unittest.TestCase):
def setUp(self):
super().setUp()
self.id = 'R1'
self.engine = PathEngine(self)
def log(self, level, text):
pass
def test_topology1(self):
"""
+====+ +----+ +----+
| R1 |------| R2 |------| R3 |
+====+ +----+ +----+
"""
collection = {'R1': LinkState(None, 'R1', 1, {'R2': 1}),
'R2': LinkState(None, 'R2', 1, {'R1': 1, 'R3': 1}),
'R3': LinkState(None, 'R3', 1, {'R2': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 2)
self.assertEqual(next_hops['R2'], 'R2')
self.assertEqual(next_hops['R3'], 'R2')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
self.assertEqual(valid_origins['R2'], [])
self.assertEqual(valid_origins['R3'], [])
self.assertEqual(radius, 2)
def test_topology2(self):
"""
+====+ +----+ +----+
| R1 |------| R2 |------| R4 |
+====+ +----+ +----+
| |
+----+ +----+ +----+
| R3 |------| R5 |------| R6 |
+----+ +----+ +----+
"""
collection = {'R1': LinkState(None, 'R1', 1, {'R2': 1}),
'R2': LinkState(None, 'R2', 1, {'R1': 1, 'R3': 1, 'R4': 1}),
'R3': LinkState(None, 'R3', 1, {'R2': 1, 'R5': 1}),
'R4': LinkState(None, 'R4', 1, {'R2': 1, 'R5': 1}),
'R5': LinkState(None, 'R5', 1, {'R3': 1, 'R4': 1, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 5)
self.assertEqual(next_hops['R2'], 'R2')
self.assertEqual(next_hops['R3'], 'R2')
self.assertEqual(next_hops['R4'], 'R2')
self.assertEqual(next_hops['R5'], 'R2')
self.assertEqual(next_hops['R6'], 'R2')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
self.assertEqual(valid_origins['R2'], [])
self.assertEqual(valid_origins['R3'], [])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], [])
self.assertEqual(valid_origins['R6'], [])
self.assertEqual(radius, 4)
def test_topology3(self):
"""
+----+ +----+ +----+
| R2 |------| R3 |------| R4 |
+----+ +----+ +----+
| |
+====+ +----+ +----+
| R1 |------| R5 |------| R6 |
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 1}),
'R3': LinkState(None, 'R3', 1, {'R1': 1, 'R2': 1, 'R4': 1}),
'R4': LinkState(None, 'R4', 1, {'R3': 1, 'R5': 1}),
'R1': LinkState(None, 'R1', 1, {'R3': 1, 'R5': 1}),
'R5': LinkState(None, 'R5', 1, {'R1': 1, 'R4': 1, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 5)
self.assertEqual(next_hops['R2'], 'R3')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
self.assertEqual(valid_origins['R2'], ['R5', 'R6'])
self.assertEqual(valid_origins['R3'], ['R5', 'R6'])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], ['R2', 'R3'])
self.assertEqual(valid_origins['R6'], ['R2', 'R3'])
self.assertEqual(radius, 2)
def test_topology4(self):
"""
+----+ +----+ +----+
| R2 |------| R3 |------| R4 |
+----+ +----+ +----+
| |
+====+ +----+ +----+
| R1 |------| R5 |------| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 1}),
'R3': LinkState(None, 'R3', 1, {'R1': 1, 'R2': 1, 'R4': 1}),
'R4': LinkState(None, 'R4', 1, {'R3': 1, 'R5': 1}),
'R1': LinkState(None, 'R1', 1, {'R3': 1, 'R5': 1}),
'R5': LinkState(None, 'R5', 1, {'R1': 1, 'R4': 1, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 6)
self.assertEqual(next_hops['R2'], 'R3')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
self.assertEqual(next_hops['R7'], 'R5')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
valid_origins['R7'].sort()
self.assertEqual(valid_origins['R2'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R3'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], ['R2', 'R3'])
self.assertEqual(valid_origins['R6'], ['R2', 'R3'])
self.assertEqual(valid_origins['R7'], ['R2', 'R3'])
self.assertEqual(radius, 3)
def test_topology5(self):
"""
+----+ +----+ +----+
| R2 |------| R3 |------| R4 |
+----+ +----+ +----+
| | |
| +====+ +----+ +----+
+--------| R1 |------| R5 |------| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 1, 'R1': 1}),
'R3': LinkState(None, 'R3', 1, {'R1': 1, 'R2': 1, 'R4': 1}),
'R4': LinkState(None, 'R4', 1, {'R3': 1, 'R5': 1}),
'R1': LinkState(None, 'R1', 1, {'R3': 1, 'R5': 1, 'R2': 1}),
'R5': LinkState(None, 'R5', 1, {'R1': 1, 'R4': 1, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 6)
self.assertEqual(next_hops['R2'], 'R2')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
self.assertEqual(next_hops['R7'], 'R5')
self.assertEqual(costs['R2'], 1)
self.assertEqual(costs['R3'], 1)
self.assertEqual(costs['R4'], 2)
self.assertEqual(costs['R5'], 1)
self.assertEqual(costs['R6'], 2)
self.assertEqual(costs['R7'], 3)
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
valid_origins['R7'].sort()
self.assertEqual(valid_origins['R2'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R3'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], ['R2', 'R3'])
self.assertEqual(valid_origins['R6'], ['R2', 'R3'])
self.assertEqual(valid_origins['R7'], ['R2', 'R3'])
self.assertEqual(radius, 3)
def test_topology5_with_asymmetry1(self):
"""
+----+ +----+ +----+
| R2 |------| R3 |------| R4 |
+----+ +----+ +----+
^ | |
^ +====+ +----+ +----+
+-<-<-<--| R1 |------| R5 |------| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 1}),
'R3': LinkState(None, 'R3', 1, {'R1': 1, 'R2': 1, 'R4': 1}),
'R4': LinkState(None, 'R4', 1, {'R3': 1, 'R5': 1}),
'R1': LinkState(None, 'R1', 1, {'R3': 1, 'R5': 1, 'R2': 1}),
'R5': LinkState(None, 'R5', 1, {'R1': 1, 'R4': 1, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 6)
self.assertEqual(next_hops['R2'], 'R2')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
self.assertEqual(next_hops['R7'], 'R5')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
valid_origins['R7'].sort()
self.assertEqual(valid_origins['R2'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R3'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], ['R2', 'R3'])
self.assertEqual(valid_origins['R6'], ['R2', 'R3'])
self.assertEqual(valid_origins['R7'], ['R2', 'R3'])
self.assertEqual(radius, 3)
def test_topology5_with_asymmetry2(self):
"""
+----+ +----+ +----+
| R2 |------| R3 |------| R4 |
+----+ +----+ +----+
v | |
v +====+ +----+ +----+
+->->->->| R1 |------| R5 |------| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 1, 'R1': 1}),
'R3': LinkState(None, 'R3', 1, {'R1': 1, 'R2': 1, 'R4': 1}),
'R4': LinkState(None, 'R4', 1, {'R3': 1, 'R5': 1}),
'R1': LinkState(None, 'R1', 1, {'R3': 1, 'R5': 1}),
'R5': LinkState(None, 'R5', 1, {'R1': 1, 'R4': 1, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 6)
self.assertEqual(next_hops['R2'], 'R3')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
self.assertEqual(next_hops['R7'], 'R5')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
valid_origins['R7'].sort()
self.assertEqual(valid_origins['R2'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R3'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], ['R2', 'R3'])
self.assertEqual(valid_origins['R6'], ['R2', 'R3'])
self.assertEqual(valid_origins['R7'], ['R2', 'R3'])
self.assertEqual(radius, 3)
def test_topology5_with_asymmetry3(self):
"""
+----+ +----+ +----+
| R2 |------| R3 |------| R4 |
+----+ +----+ +----+
v | |
v +====+ +----+ +----+
+->->->->| R1 |------| R5 |<-<-<-| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 1, 'R1': 1}),
'R3': LinkState(None, 'R3', 1, {'R1': 1, 'R2': 1, 'R4': 1}),
'R4': LinkState(None, 'R4', 1, {'R3': 1, 'R5': 1}),
'R1': LinkState(None, 'R1', 1, {'R3': 1, 'R5': 1}),
'R5': LinkState(None, 'R5', 1, {'R1': 1, 'R4': 1}),
'R6': LinkState(None, 'R6', 1, {'R5': 1, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 4)
self.assertEqual(next_hops['R2'], 'R3')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
self.assertEqual(valid_origins['R2'], ['R5'])
self.assertEqual(valid_origins['R3'], ['R5'])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], ['R2', 'R3'])
self.assertEqual(radius, 2)
def test_topology5_with_costs1(self):
"""
+----+ +----+ +----+
| R2 |--4---| R3 |---4--| R4 |
+----+ +----+ +----+
| | |
| 3 5
| | |
| +====+ +----+ +----+
+--20----| R1 |--10--| R5 |--2---| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 4, 'R1': 20}),
'R3': LinkState(None, 'R3', 1, {'R1': 3, 'R2': 4, 'R4': 4}),
'R4': LinkState(None, 'R4', 1, {'R3': 4, 'R5': 5}),
'R1': LinkState(None, 'R1', 1, {'R3': 3, 'R5': 10, 'R2': 20}),
'R5': LinkState(None, 'R5', 1, {'R1': 10, 'R4': 5, 'R6': 2}),
'R6': LinkState(None, 'R6', 1, {'R5': 2, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 6)
self.assertEqual(next_hops['R2'], 'R3')
self.assertEqual(next_hops['R3'], 'R3')
self.assertEqual(next_hops['R4'], 'R3')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
self.assertEqual(next_hops['R7'], 'R5')
self.assertEqual(costs['R2'], 7)
self.assertEqual(costs['R3'], 3)
self.assertEqual(costs['R4'], 7)
self.assertEqual(costs['R5'], 10)
self.assertEqual(costs['R6'], 12)
self.assertEqual(costs['R7'], 13)
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
valid_origins['R7'].sort()
self.assertEqual(valid_origins['R2'], [])
self.assertEqual(valid_origins['R3'], [])
self.assertEqual(valid_origins['R4'], [])
self.assertEqual(valid_origins['R5'], [])
self.assertEqual(valid_origins['R6'], [])
self.assertEqual(valid_origins['R7'], [])
self.assertEqual(radius, 3)
def test_topology5_with_costs2(self):
"""
+----+ +----+ +----+
| R2 |--4---| R3 |---4--| R4 |
+----+ +----+ +----+
| | |
| 100 100
| | |
| +====+ +----+ +----+
+---5----| R1 |--10--| R5 |--2---| R6 |------ R7 (no ls from R7)
+====+ +----+ +----+
"""
collection = {'R2': LinkState(None, 'R2', 1, {'R3': 4, 'R1': 5}),
'R3': LinkState(None, 'R3', 1, {'R1': 100, 'R2': 4, 'R4': 4}),
'R4': LinkState(None, 'R4', 1, {'R3': 4, 'R5': 100}),
'R1': LinkState(None, 'R1', 1, {'R3': 100, 'R5': 10, 'R2': 5}),
'R5': LinkState(None, 'R5', 1, {'R1': 10, 'R4': 100, 'R6': 2}),
'R6': LinkState(None, 'R6', 1, {'R5': 2, 'R7': 1})}
next_hops, costs, valid_origins, radius = self.engine.calculate_routes(collection)
self.assertEqual(len(next_hops), 6)
self.assertEqual(next_hops['R2'], 'R2')
self.assertEqual(next_hops['R3'], 'R2')
self.assertEqual(next_hops['R4'], 'R2')
self.assertEqual(next_hops['R5'], 'R5')
self.assertEqual(next_hops['R6'], 'R5')
self.assertEqual(next_hops['R7'], 'R5')
self.assertEqual(costs['R2'], 5)
self.assertEqual(costs['R3'], 9)
self.assertEqual(costs['R4'], 13)
self.assertEqual(costs['R5'], 10)
self.assertEqual(costs['R6'], 12)
self.assertEqual(costs['R7'], 13)
valid_origins['R2'].sort()
valid_origins['R3'].sort()
valid_origins['R4'].sort()
valid_origins['R5'].sort()
valid_origins['R6'].sort()
valid_origins['R7'].sort()
self.assertEqual(valid_origins['R2'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R3'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R4'], ['R5', 'R6', 'R7'])
self.assertEqual(valid_origins['R5'], ['R2', 'R3', 'R4'])
self.assertEqual(valid_origins['R6'], ['R2', 'R3', 'R4'])
self.assertEqual(valid_origins['R7'], ['R2', 'R3', 'R4'])
self.assertEqual(radius, 3)
def test_topology6_path_vs_valid_origin(self):
"""
+====+ +====+ +----+
| R1 |--10--| R3 |--10--| R5 |
+====+ +====+ +----+
| | |
1 10 1
| | |
+----+ +----+ +----+
| R2 |--10--| R4 |--10--| R6 |
+----+ +----+ +----+
"""
collection = {'R1': LinkState(None, 'R1', 1, {'R2': 1, 'R3': 10}),
'R2': LinkState(None, 'R2', 1, {'R1': 1, 'R4': 10}),
'R3': LinkState(None, 'R3', 1, {'R1': 10, 'R4': 10, 'R5': 10}),
'R4': LinkState(None, 'R4', 1, {'R2': 10, 'R3': 10, 'R6': 10}),
'R5': LinkState(None, 'R5', 1, {'R3': 10, 'R6': 1}),
'R6': LinkState(None, 'R6', 1, {'R4': 10, 'R5': 1})}
self.id = 'R3'
self.engine = PathEngine(self)
r3_next_hops, r3_costs, r3_valid_origins, r3_radius = self.engine.calculate_routes(collection)
self.id = 'R1'
self.engine = PathEngine(self)
r1_next_hops, r1_costs, r1_valid_origins, r1_radius = self.engine.calculate_routes(collection)
self.assertEqual(r1_next_hops['R6'], 'R2')
self.assertEqual(r3_valid_origins['R6'], [])
self.assertEqual(r1_radius, 3)
self.assertEqual(r3_radius, 2)
if __name__ == '__main__':
unittest.main(main_module())