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#!/usr/bin/env python
#
# test_zebra_rib.py
#
# Copyright (c) 2019 by
# Cumulus Networks, Inc
# Donald Sharp
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
test_zebra_rib.py: Test some basic zebra <-> kernel interactions
"""
import os
import re
import sys
from functools import partial
import pytest
import json
# 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
# Required to instantiate the topology builder class.
from mininet.topo import Topo
class ZebraTopo(Topo):
"Test topology builder"
def build(self, *_args, **_opts):
"Build function"
tgen = get_topogen(self)
tgen.add_router('r1')
# Create a empty network for router 1
switch = tgen.add_switch('s1')
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r1'])
def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(ZebraTopo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.iteritems():
router.load_config(
TopoRouter.RD_ZEBRA,
os.path.join(CWD, '{}/zebra.conf'.format(rname))
)
# Initialize all routers.
tgen.start_router()
def teardown_module(mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
def test_zebra_kernel_admin_distance():
"Test some basic kernel routes added that should be accepted"
logger.info("Test some basic kernel routes that should be accepted")
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip('skipped because of router(s) failure')
r1 = tgen.gears['r1']
# Route with 255/8192 metric
r1.run('ip route add 4.5.1.0/24 via 192.168.210.2 dev r1-eth0 metric 4278198272')
# Route with 1/1 metric
r1.run('ip route add 4.5.2.0/24 via 192.168.211.2 dev r1-eth1 metric 16777217')
# Route with 10/1 metric
r1.run('ip route add 4.5.3.0/24 via 192.168.212.2 dev r1-eth2 metric 167772161')
# Same route with a 160/1 metric
r1.run('ip route add 4.5.3.0/24 via 192.168.213.2 dev r1-eth3 metric 2684354561')
#Currently I believe we have a bug here with the same route and different
#metric. That needs to be properly resolved. Making a note for
#coming back around later and fixing this.
#tgen.mininet_cli()
for i in range(1, 2):
json_file = '{}/r1/v4_route_{}.json'.format(CWD, i)
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
r1,
'show ip route 4.5.{}.0 json'.format(i),
expected)
_, result = topotest.run_and_expect(test_func, None, count=2, wait=.5)
assertmsg = '"r1" JSON output mismatches'
assert result is None, assertmsg
#tgen.mininet_cli()
def test_zebra_kernel_override():
"Test that a FRR route with a lower admin distance takes over"
logger.info("Test kernel override with a better admin distance")
tgen = get_topogen()
if (tgen.routers_have_failure()):
ptyest.skip("skipped because of preview test failure")
r1 = tgen.gears['r1']
r1.vtysh_cmd("conf\nip route 4.5.1.0/24 192.168.216.3")
json_file = '{}/r1/v4_route_1_static_override.json'.format(CWD)
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
r1, 'show ip route 4.5.1.0 json', expected)
_, result = topotest.run_and_expect(test_func, None, count=2, wait=.5)
assert result is None, '"r1" JSON output mismatches'
logger.info("Test that the removal of the static route allows the kernel to take back over")
r1.vtysh_cmd("conf\nno ip route 4.5.1.0/24 192.168.216.3")
json_file = '{}/r1/v4_route_1.json'.format(CWD)
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
r1, 'show ip route 4.5.1.0 json', expected)
_, result = topotest.run_and_expect(test_func, None, count=2, wait=.5)
assert result is None, '"r1" JSON output mismatches'
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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