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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# test_bfd_topo3.py
# Part of NetDEF Topology Tests
#
# Copyright (c) 2020 by
# Network Device Education Foundation, Inc. ("NetDEF")
#
"""
test_bfd_topo3.py: Test the FRR BFD daemon multi hop.
"""
import os
import sys
import json
from functools import partial
import pytest
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd]
def setup_module(mod):
"Sets up the pytest environment"
topodef = {
"s1": ("r1", "r2"),
"s2": ("r2", "r3"),
"s3": ("r3", "r4"),
"s4": ("r4", "r5", "r6"),
}
tgen = Topogen(topodef, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.items():
daemon_file = "{}/{}/bfdd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_BFD, daemon_file)
daemon_file = "{}/{}/zebra.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_ZEBRA, daemon_file)
daemon_file = "{}/{}/bgpd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_BGP, daemon_file)
daemon_file = "{}/{}/staticd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_STATIC, daemon_file)
# Initialize all routers.
tgen.start_router()
def expect_static_bfd_output(router, filename):
"Load JSON file and compare with 'show bfd peer json'"
tgen = get_topogen()
logger.info("waiting BFD configuration on router {}".format(router))
bfd_config = json.loads(open("{}/{}/{}.json".format(CWD, router, filename)).read())
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show bfd static route json",
bfd_config,
)
_, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
assertmsg = '"{}" BFD static route status failure'.format(router)
assert result is None, assertmsg
def expect_route_missing(router, iptype, route):
"Wait until route is present on RIB for protocol."
tgen = get_topogen()
logger.info("waiting route {} to disapear in {}".format(route, router))
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show {} route json".format(iptype),
{route: None},
)
rv, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
assertmsg = '"{}" convergence failure'.format(router)
assert result is None, assertmsg
def test_wait_bgp_convergence():
"Wait for BGP to converge"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("waiting for protocols to converge")
def expect_loopback_route(router, iptype, route, proto):
"Wait until route is present on RIB for protocol."
logger.info("waiting route {} in {}".format(route, router))
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show {} route json".format(iptype),
{route: [{"protocol": proto}]},
)
_, result = topotest.run_and_expect(test_func, None, count=130, wait=1)
assertmsg = '"{}" OSPF convergence failure'.format(router)
assert result is None, assertmsg
# Wait for R1 <-> R2 convergence.
expect_loopback_route("r1", "ip", "10.254.254.2/32", "bgp")
# Wait for R1 <-> R3 convergence.
expect_loopback_route("r1", "ip", "10.254.254.3/32", "bgp")
# Wait for R1 <-> R4 convergence.
expect_loopback_route("r1", "ip", "10.254.254.4/32", "bgp")
# Wait for R1 <-> R5 convergence.
expect_loopback_route("r1", "ip", "10.254.254.5/32", "bgp")
# Wait for R1 <-> R6 convergence.
expect_loopback_route("r1", "ip", "10.254.254.6/32", "bgp")
# Wait for R2 <-> R1 convergence.
expect_loopback_route("r2", "ip", "10.254.254.1/32", "bgp")
# Wait for R2 <-> R3 convergence.
expect_loopback_route("r2", "ip", "10.254.254.3/32", "bgp")
# Wait for R2 <-> R4 convergence.
expect_loopback_route("r2", "ip", "10.254.254.4/32", "bgp")
# Wait for R2 <-> R5 convergence.
expect_loopback_route("r2", "ip", "10.254.254.5/32", "bgp")
# Wait for R2 <-> R6 convergence.
expect_loopback_route("r2", "ip", "10.254.254.6/32", "bgp")
# Wait for R3 <-> R1 convergence.
expect_loopback_route("r3", "ip", "10.254.254.1/32", "bgp")
# Wait for R3 <-> R2 convergence.
expect_loopback_route("r3", "ip", "10.254.254.2/32", "bgp")
# Wait for R3 <-> R4 convergence.
expect_loopback_route("r3", "ip", "10.254.254.4/32", "bgp")
# Wait for R3 <-> R5 convergence.
expect_loopback_route("r3", "ip", "10.254.254.5/32", "bgp")
# Wait for R3 <-> R6 convergence.
expect_loopback_route("r3", "ip", "10.254.254.6/32", "bgp")
# Wait for R4 <-> R1 convergence.
expect_loopback_route("r4", "ip", "10.254.254.1/32", "bgp")
# Wait for R4 <-> R2 convergence.
expect_loopback_route("r4", "ip", "10.254.254.2/32", "bgp")
# Wait for R4 <-> R3 convergence.
expect_loopback_route("r4", "ip", "10.254.254.3/32", "bgp")
# Wait for R4 <-> R5 convergence.
expect_loopback_route("r4", "ip", "10.254.254.5/32", "static")
# Wait for R4 <-> R6 convergence.
expect_loopback_route("r4", "ip", "10.254.254.6/32", "static")
# Wait for R5 <-> R6 convergence.
expect_loopback_route("r3", "ipv6", "2001:db8:5::/64", "static")
# Wait for R6 <-> R5 convergence.
expect_loopback_route("r6", "ipv6", "2001:db8:1::/64", "static")
def test_wait_bfd_convergence():
"Wait for BFD to converge"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test BFD configurations")
def expect_bfd_configuration(router):
"Load JSON file and compare with 'show bfd peer json'"
logger.info("waiting BFD configuration on router {}".format(router))
bfd_config = json.loads(open("{}/{}/bfd-peers.json".format(CWD, router)).read())
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show bfd peers json",
bfd_config,
)
_, result = topotest.run_and_expect(test_func, None, count=200, wait=1)
assertmsg = '"{}" BFD configuration failure'.format(router)
assert result is None, assertmsg
expect_bfd_configuration("r1")
expect_bfd_configuration("r2")
expect_bfd_configuration("r3")
expect_bfd_configuration("r4")
expect_bfd_configuration("r5")
expect_bfd_configuration("r6")
def test_static_route_monitoring_convergence():
"Test static route monitoring output."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test BFD static route status")
expect_static_bfd_output("r3", "bfd-static")
expect_static_bfd_output("r6", "bfd-static")
def test_static_route_monitoring_wrong_source():
"Test that static monitoring fails if setting a wrong source."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test route wrong ")
tgen.gears["r3"].vtysh_cmd(
"""
configure
ipv6 route 2001:db8:5::/64 2001:db8:4::3 bfd multi-hop source 2001:db8:4::2 profile slow-tx
"""
)
expect_route_missing("r3", "ipv6", "2001:db8:5::/64")
def test_static_route_monitoring_unset_source():
"Test that static monitoring fails if setting a wrong source."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test route wrong ")
tgen.gears["r3"].vtysh_cmd(
"""
configure
ipv6 route 2001:db8:5::/64 2001:db8:4::3 bfd multi-hop profile slow-tx
"""
)
expect_static_bfd_output("r3", "bfd-static")
expect_static_bfd_output("r6", "bfd-static")
def test_expect_static_rib_removal():
"Test that route got removed from RIB (staticd and bgpd)."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("Setting r4 link down ...")
tgen.gears["r4"].link_enable("r4-eth0", False)
expect_static_bfd_output("r3", "bfd-static-down")
expect_static_bfd_output("r6", "bfd-static-down")
expect_route_missing("r1", "ip", "10.254.254.5/32")
expect_route_missing("r2", "ip", "10.254.254.5/32")
expect_route_missing("r3", "ip", "10.254.254.5/32")
expect_route_missing("r3", "ipv6", "2001:db8:5::/64")
expect_route_missing("r6", "ipv6", "2001:db8:1::/64")
def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
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))
|
