# 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 __future__ import absolute_import from itertools import chain import sys import time import unittest from fabric.api import local 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, ) 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])