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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# Copyright (c) 2021 by
# Donatas Abraitis <donatas.abraitis@gmail.com>
#
"""
Test if peer-group works for numbered and unnumbered configurations.
"""
import os
import sys
import json
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
pytestmark = [pytest.mark.bgpd]
def build_topo(tgen):
for routern in range(1, 4):
tgen.add_router("r{}".format(routern))
switch = tgen.add_switch("s1")
switch.add_link(tgen.gears["r1"])
switch.add_link(tgen.gears["r2"])
switch.add_link(tgen.gears["r3"])
switch = tgen.add_switch("s2")
switch.add_link(tgen.gears["r1"])
switch.add_link(tgen.gears["r2"])
def setup_module(mod):
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for _, (rname, router) in enumerate(router_list.items(), 1):
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
tgen.start_router()
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_bgp_peer_group():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def _bgp_peer_group_configured():
output = json.loads(tgen.gears["r1"].vtysh_cmd("show ip bgp neighbor json"))
expected = {
"r1-eth0": {"peerGroup": "PG", "bgpState": "Established"},
"192.168.255.3": {"peerGroup": "PG", "bgpState": "Established"},
"192.168.251.2": {"peerGroup": "PG1", "bgpState": "Established"},
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_peer_group_configured)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed bgp convergence in r1"
def _bgp_peer_group_check_advertised_routes():
output = json.loads(
tgen.gears["r3"].vtysh_cmd("show ip bgp neighbor PG advertised-routes json")
)
expected = {
"advertisedRoutes": {
"192.168.255.0/24": {
"valid": True,
"best": True,
}
}
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_peer_group_check_advertised_routes)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed checking advertised routes from r3"
def test_bgp_peer_group_remote_as_del_readd():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r1 = tgen.gears["r1"]
logger.info("Remove bgp peer-group PG1 remote-as neighbor should be retained")
r1.cmd(
'vtysh -c "config t" -c "router bgp 65001" '
+ ' -c "no neighbor PG1 remote-as external" '
)
def _bgp_peer_group_remoteas_del():
output = json.loads(tgen.gears["r1"].vtysh_cmd("show bgp neighbor json"))
expected = {
"192.168.251.2": {"peerGroup": "PG1", "bgpState": "Active"},
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_peer_group_remoteas_del)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed bgp convergence in r1"
logger.info("Re-add bgp peer-group PG1 remote-as neighbor should be established")
r1.cmd(
'vtysh -c "config t" -c "router bgp 65001" '
+ ' -c "neighbor PG1 remote-as external" '
)
def _bgp_peer_group_remoteas_add():
output = json.loads(tgen.gears["r1"].vtysh_cmd("show bgp neighbor json"))
expected = {
"192.168.251.2": {"peerGroup": "PG1", "bgpState": "Established"},
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_peer_group_remoteas_add)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed bgp convergence in r1"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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