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# Copyright (C) 2016 Nippon Telegraph and Telephone Corporation.
#
# 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.
from itertools import chain
import sys
import time
import unittest
import nose
from lib.noseplugin import OptionParser, parser_option
from lib import base
from lib.base import (
BGP_FSM_ACTIVE,
BGP_FSM_ESTABLISHED,
LONG_LIVED_GRACEFUL_RESTART_TIME,
local,
)
from lib.gobgp import GoBGPContainer
class GoBGPTestBase(unittest.TestCase):
@classmethod
def setUpClass(cls):
gobgp_ctn_image_name = parser_option.gobgp_image
base.TEST_PREFIX = parser_option.test_prefix
g1 = GoBGPContainer(name='g1', asn=65000, router_id='192.168.0.1',
ctn_image_name=gobgp_ctn_image_name,
log_level=parser_option.gobgp_log_level)
g2 = GoBGPContainer(name='g2', asn=65001, router_id='192.168.0.2',
ctn_image_name=gobgp_ctn_image_name,
log_level=parser_option.gobgp_log_level)
g3 = GoBGPContainer(name='g3', asn=65002, router_id='192.168.0.3',
ctn_image_name=gobgp_ctn_image_name,
log_level=parser_option.gobgp_log_level)
g4 = GoBGPContainer(name='g4', asn=65003, router_id='192.168.0.4',
ctn_image_name=gobgp_ctn_image_name,
log_level=parser_option.gobgp_log_level)
ctns = [g1, g2, g3, g4]
initial_wait_time = max(ctn.run() for ctn in ctns)
time.sleep(initial_wait_time)
g1.add_peer(g2, graceful_restart=True, llgr=True)
g2.add_peer(g1, graceful_restart=True, llgr=True)
g1.add_peer(g3, graceful_restart=True, llgr=True)
g3.add_peer(g1, graceful_restart=True, llgr=True)
g1.add_peer(g4, graceful_restart=True)
g4.add_peer(g1, graceful_restart=True)
cls.bgpds = {'g1': g1, 'g2': g2, 'g3': g3, 'g4': g4}
# test each neighbor state is turned establish
def test_01_neighbor_established(self):
g1 = self.bgpds['g1']
g2 = self.bgpds['g2']
g3 = self.bgpds['g3']
g4 = self.bgpds['g4']
g1.wait_for(expected_state=BGP_FSM_ESTABLISHED, peer=g2)
g1.wait_for(expected_state=BGP_FSM_ESTABLISHED, peer=g3)
g1.wait_for(expected_state=BGP_FSM_ESTABLISHED, peer=g4)
def test_02_graceful_restart(self):
g1 = self.bgpds['g1']
g2 = self.bgpds['g2']
g3 = self.bgpds['g3']
g4 = self.bgpds['g4']
g2.local('gobgp global rib add 10.0.0.0/24')
g2.local('gobgp global rib add 10.10.0.0/24 community no-llgr')
time.sleep(1)
g2.stop_gobgp()
g1.wait_for(expected_state=BGP_FSM_ACTIVE, peer=g2)
time.sleep(1)
self.assertEqual(len(g1.get_global_rib('10.0.0.0/24')), 1)
# 10.10.0.0/24 is announced with no-llgr community
# must not exist in the rib
self.assertEqual(len(g1.get_global_rib('10.10.0.0/24')), 0)
for d in g1.get_global_rib():
for p in d['paths']:
self.assertTrue(p['stale'])
self.assertEqual(len(g3.get_global_rib('10.0.0.0/24')), 1)
# check llgr-stale community is added to 10.0.0.0/24
r = g3.get_global_rib('10.0.0.0/24')[0]['paths'][0]
comms = list(chain.from_iterable([attr['communities'] for attr in r['attrs'] if attr['type'] == 8]))
self.assertTrue(0xffff0006 in comms)
# g4 is not llgr capable, llgr-stale route must be
# withdrawn
self.assertEqual(len(g4.get_global_rib('10.0.0.0/24')), 0)
g2.start_gobgp(graceful_restart=True)
g2.local('gobgp global rib add 10.0.0.0/24')
g2.local('gobgp global rib add 10.10.0.0/24')
def test_03_neighbor_established(self):
g1 = self.bgpds['g1']
g2 = self.bgpds['g2']
# g3 = self.bgpds['g3']
# g4 = self.bgpds['g4']
g1.wait_for(expected_state=BGP_FSM_ESTABLISHED, peer=g2)
time.sleep(1)
self.assertEqual(len(g1.get_global_rib('10.0.0.0/24')), 1)
self.assertEqual(len(g1.get_global_rib('10.10.0.0/24')), 1)
for d in g1.get_global_rib():
for p in d['paths']:
self.assertFalse(p.get('stale', False))
def test_04_llgr_stale_route_depreferenced(self):
g1 = self.bgpds['g1']
g2 = self.bgpds['g2']
g3 = self.bgpds['g3']
g4 = self.bgpds['g4']
g4.local('gobgp global rib add 10.0.0.0/24 med 100')
time.sleep(1)
# check g2's path is chosen as best and advertised
rib = g3.get_global_rib('10.0.0.0/24')
self.assertEqual(len(rib), 1)
self.assertTrue(g2.asn in rib[0]['paths'][0]['aspath'])
g2.stop_gobgp()
g1.wait_for(expected_state=BGP_FSM_ACTIVE, peer=g2)
time.sleep(1)
# llgr_stale route depreference must happend
# check g4's path is chosen as best and advertised
rib = g3.get_global_rib('10.0.0.0/24')
self.assertEqual(len(rib), 1)
self.assertTrue(g4.asn in rib[0]['paths'][0]['aspath'])
# if no candidate exists, llgr_stale route will be chosen as best
rib = g3.get_global_rib('10.10.0.0/24')
self.assertEqual(len(rib), 1)
self.assertTrue(g2.asn in rib[0]['paths'][0]['aspath'])
def test_05_llgr_restart_timer_expire(self):
time.sleep(LONG_LIVED_GRACEFUL_RESTART_TIME + 5)
g3 = self.bgpds['g3']
rib = g3.get_global_rib('10.10.0.0/24')
self.assertEqual(len(rib), 0)
if __name__ == '__main__':
output = local("which docker 2>&1 > /dev/null ; echo $?", capture=True)
if int(output) is not 0:
print("docker not found")
sys.exit(1)
nose.main(argv=sys.argv, addplugins=[OptionParser()],
defaultTest=sys.argv[0])
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