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192 lines
6.1 KiB
Python
192 lines
6.1 KiB
Python
#!/usr/bin/env python
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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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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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# OF THIS SOFTWARE.
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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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# Required to instantiate the topology builder class.
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from mininet.topo import Topo
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class BFDTopo(Topo):
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"Test topology builder"
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def build(self, *_args, **_opts):
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"Build function"
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tgen = get_topogen(self)
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# Create 4 routers
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for routern in range(1, 5):
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tgen.add_router("r{}".format(routern))
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["r2"])
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switch.add_link(tgen.gears["r3"])
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switch = tgen.add_switch("s3")
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switch.add_link(tgen.gears["r3"])
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switch.add_link(tgen.gears["r4"])
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def setup_module(mod):
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"Sets up the pytest environment"
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tgen = Topogen(BFDTopo, 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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# Initialize all routers.
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tgen.start_router()
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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 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 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 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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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=130, 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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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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