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