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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# test_pim.py
#
# Copyright (c) 2018 Cumulus Networks, Inc.
# Donald Sharp
#
"""
test_pim.py: Test pim
"""
import os
import sys
import pytest
import json
from functools import partial
pytestmark = [pytest.mark.pimd]
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
def build_topo(tgen):
"Build function"
for routern in range(1, 4):
tgen.add_router("r{}".format(routern))
tgen.add_router("rp")
# rp ------ r1 -------- r2
# \
# --------- r3
# r1 -> .1
# r2 -> .2
# rp -> .3
# r3 -> .4
# loopback network is 10.254.0.X/32
#
# r1 <- sw1 -> r2
# r1-eth0 <-> r2-eth0
# 10.0.20.0/24
sw = tgen.add_switch("sw1")
sw.add_link(tgen.gears["r1"])
sw.add_link(tgen.gears["r2"])
# r1 <- sw2 -> rp
# r1-eth1 <-> rp-eth0
# 10.0.30.0/24
sw = tgen.add_switch("sw2")
sw.add_link(tgen.gears["r1"])
sw.add_link(tgen.gears["rp"])
# 10.0.40.0/24
sw = tgen.add_switch("sw3")
sw.add_link(tgen.gears["r1"])
sw.add_link(tgen.gears["r3"])
def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
# For all registered routers, load the zebra configuration file
for rname, router in tgen.routers().items():
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_PIM, os.path.join(CWD, "{}/pimd.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
# After loading the configurations, this function loads configured daemons.
tgen.start_router()
# tgen.mininet_cli()
def teardown_module(mod):
"Teardown the pytest environment"
tgen = get_topogen()
# This function tears down the whole topology.
tgen.stop_topology()
def test_pim_rp_setup():
"Ensure basic routing has come up and the rp has an outgoing interface"
# Ensure rp and r1 establish pim neighbor ship and bgp has come up
# Finally ensure that the rp has an outgoing interface on r1
tgen = get_topogen()
r1 = tgen.gears["r1"]
json_file = "{}/{}/rp-info.json".format(CWD, r1.name)
expected = json.loads(open(json_file).read())
test_func = partial(
topotest.router_json_cmp, r1, "show ip pim rp-info json", expected
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assertmsg = '"{}" JSON output mismatches'.format(r1.name)
assert result is None, assertmsg
# tgen.mininet_cli()
def test_pim_send_mcast_stream():
"Establish a Multicast stream from r2 -> r1 and then ensure S,G is created as appropriate"
logger.info("Establish a Mcast stream from r2->r1 and then ensure S,G created")
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
rp = tgen.gears["rp"]
r3 = tgen.gears["r3"]
r2 = tgen.gears["r2"]
r1 = tgen.gears["r1"]
# Let's establish a S,G stream from r2 -> r1
CWD = os.path.dirname(os.path.realpath(__file__))
r2.run(
"{}/mcast-tx.py --ttl 5 --count 40 --interval 2 229.1.1.1 r2-eth0 > /tmp/bar".format(
CWD
)
)
# And from r3 -> r1
r3.run(
"{}/mcast-tx.py --ttl 5 --count 40 --interval 2 229.1.1.1 r3-eth0 > /tmp/bar".format(
CWD
)
)
# Let's see that it shows up and we have established some basic state
out = r1.vtysh_cmd("show ip pim upstream json", isjson=True)
expected = {
"229.1.1.1": {
"10.0.20.2": {
"firstHopRouter": 1,
"joinState": "NotJoined",
"regState": "RegPrune",
"inboundInterface": "r1-eth0",
}
}
}
test_func = partial(
topotest.router_json_cmp, r1, "show ip pim upstream json", expected
)
_, result = topotest.run_and_expect(test_func, None, count=40, wait=1)
assert result is None, "failed to converge pim"
# tgen.mininet_cli()
def test_pim_rp_sees_stream():
"Ensure that the RP sees the stream and has acted accordingly"
tgen = get_topogen()
rp = tgen.gears["rp"]
json_file = "{}/{}/upstream.json".format(CWD, rp.name)
expected = json.loads(open(json_file).read())
test_func = partial(
topotest.router_json_cmp, rp, "show ip pim upstream json", expected
)
_, result = topotest.run_and_expect(test_func, None, count=40, wait=1)
assertmsg = '"{}" JSON output mismatches'.format(rp.name)
assert result is None, assertmsg
def test_pim_igmp_report():
"Send a igmp report from r2->r1 and ensure that the *,G state is created on r1"
logger.info("Send a igmp report from r2-r1 and ensure *,G created")
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r2 = tgen.gears["r2"]
r1 = tgen.gears["r1"]
# Let's send a igmp report from r2->r1
cmd = [os.path.join(CWD, "mcast-rx.py"), "229.1.1.2", "r2-eth0"]
p = r2.popen(cmd)
try:
expected = {
"229.1.1.2": {
"*": {
"sourceIgmp": 1,
"joinState": "Joined",
"regState": "RegNoInfo",
"sptBit": 0,
}
}
}
test_func = partial(
topotest.router_json_cmp, r1, "show ip pim upstream json", expected
)
_, result = topotest.run_and_expect(test_func, None, count=40, wait=1)
assertmsg = '"{}" JSON output mismatches'.format(r1.name)
assert result is None, assertmsg
finally:
if p:
p.terminate()
p.wait()
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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