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#!/usr/bin/env python
#
# Copyright (c) 2021 by
# Donatas Abraitis <donatas.abraitis@gmail.com>
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
Test if BGP UPDATE with AGGREGATOR AS attribute with value zero (0)
is continued to be processed, but AGGREGATOR attribute is discarded.
"""
import os
import sys
import json
import time
import pytest
import functools
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
from mininet.topo import Topo
pytestmark = [pytest.mark.bgpd]
class BgpAggregatorAsnZero(Topo):
def build(self, *_args, **_opts):
tgen = get_topogen(self)
r1 = tgen.add_router("r1")
peer1 = tgen.add_exabgp_peer(
"peer1", ip="10.0.0.2", defaultRoute="via 10.0.0.1"
)
switch = tgen.add_switch("s1")
switch.add_link(r1)
switch.add_link(peer1)
def setup_module(mod):
tgen = Topogen(BgpAggregatorAsnZero, mod.__name__)
tgen.start_topology()
router = tgen.gears["r1"]
router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, "r1/zebra.conf"))
router.load_config(TopoRouter.RD_BGP, os.path.join(CWD, "r1/bgpd.conf"))
router.start()
peer = tgen.gears["peer1"]
peer.start(os.path.join(CWD, "peer1"), os.path.join(CWD, "exabgp.env"))
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_bgp_aggregator_zero():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def _bgp_converge():
output = json.loads(
tgen.gears["r1"].vtysh_cmd("show ip bgp neighbor 10.0.0.2 json")
)
expected = {
"10.0.0.2": {
"bgpState": "Established",
"addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}},
}
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_converge)
success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, 'Failed bgp convergence in "{}"'.format(tgen.gears["r1"])
def _bgp_has_correct_aggregator_route_with_asn_0():
output = json.loads(
tgen.gears["r1"].vtysh_cmd("show ip bgp 192.168.100.101/32 json")
)
if "aggregatorAs" in output["paths"][0].keys():
return False
else:
return True
assert (
_bgp_has_correct_aggregator_route_with_asn_0() is True
), 'Aggregator AS attribute with ASN 0 found in "{}"'.format(tgen.gears["r1"])
def _bgp_has_correct_aggregator_route_with_good_asn():
output = json.loads(
tgen.gears["r1"].vtysh_cmd("show ip bgp 192.168.100.102/32 json")
)
expected = {"paths": [{"aggregatorAs": 65001, "aggregatorId": "10.0.0.2"}]}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_has_correct_aggregator_route_with_good_asn)
success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, 'Aggregator AS attribute not found in "{}"'.format(
tgen.gears["r1"]
)
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()
if not tgen.is_memleak_enabled():
pytest.skip("Memory leak test/report is disabled")
tgen.report_memory_leaks()
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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