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This may be expanded in the future as we figure out more things to gather when the test has gone south. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
262 lines
8.2 KiB
Python
Executable File
262 lines
8.2 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# test_pbr_topo1.py
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#
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# Copyright (c) 2020 by
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# Cumulus Networks, Inc.
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# Donald Sharp
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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_pbr_topo1.py: Testing PBR
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"""
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import os
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import re
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import sys
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import pytest
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import json
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from functools import partial
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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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from lib.common_config import shutdown_bringup_interface
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# Required to instantiate the topology builder class.
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from mininet.topo import Topo
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#####################################################
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##
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## Network Topology Definition
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##
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#####################################################
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class NetworkTopo(Topo):
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"PBR Topology 1"
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def build(self, **_opts):
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"Build function"
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tgen = get_topogen(self)
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# Populate routers
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for routern in range(1, 2):
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tgen.add_router("r{}".format(routern))
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# Populate switches
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for switchn in range(1, 6):
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switch = tgen.add_switch("sw{}".format(switchn))
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switch.add_link(tgen.gears["r1"])
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#####################################################
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##
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## Tests starting
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##
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#####################################################
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def setup_module(module):
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"Setup topology"
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tgen = Topogen(NetworkTopo, module.__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.iteritems():
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# Install vrf into the kernel and slave eth3
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router.run("ip link add vrf-chiyoda type vrf table 1000")
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router.run("ip link set dev {}-eth3 master vrf-chiyoda".format(rname))
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router.run("ip link set vrf-chiyoda up")
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_PBRD, os.path.join(CWD, "{}/pbrd.conf".format(rname))
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)
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tgen.start_router()
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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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# This function tears down the whole topology.
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tgen.stop_topology()
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def test_converge_protocols():
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"Wait for protocol convergence"
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tgen = get_topogen()
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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topotest.sleep(5, "Waiting for PBR convergence")
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def test_pbr_data():
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"Test PBR 'show ip eigrp'"
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tgen = get_topogen()
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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# Verify PBR Status
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logger.info("Verifying PBR routes")
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router_list = tgen.routers().values()
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for router in router_list:
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intf_file = "{}/{}/pbr-interface.json".format(CWD, router.name)
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logger.info(intf_file)
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# Read expected result from file
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expected = json.loads(open(intf_file).read())
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# Actual output from router
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test_func = partial(topotest.router_json_cmp, router, "show pbr interface json", expected)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"show pbr interface" mismatches on {}'.format(router.name)
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if result is not None:
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gather_pbr_data_on_error(router)
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assert result is None, assertmsg
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map_file = "{}/{}/pbr-map.json".format(CWD, router.name)
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logger.info(map_file)
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# Read expected result from file
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expected = json.loads(open(map_file).read())
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# Actual output from router
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test_func = partial(topotest.router_json_cmp, router, "show pbr map json", expected)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"show pbr map" mismatches on {}'.format(router.name)
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if result is not None:
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gather_pbr_data_on_error(router)
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assert result is None, assertmsg
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nexthop_file = "{}/{}/pbr-nexthop-groups.json".format(CWD, router.name)
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logger.info(nexthop_file)
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# Read expected result from file
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expected = json.loads(open(nexthop_file).read())
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# Actual output from router
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test_func = partial(topotest.router_json_cmp, router, "show pbr nexthop-groups json", expected)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"show pbr nexthop-groups" mismatches on {}'.format(router.name)
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if result is not None:
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gather_pbr_data_on_error(router)
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assert result is None, assertmsg
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def test_pbr_flap():
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"Test PBR interface flapping"
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tgen = get_topogen()
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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# Verify PBR Status
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logger.info("Flapping PBR Interfaces")
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router_list = tgen.routers().values()
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for router in router_list:
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# Flap interface to see if route-map properties are intact
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# Shutdown interface
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for i in range(5):
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intf = "r1-eth{}".format(i)
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# Down and back again
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shutdown_bringup_interface(tgen, router.name, intf, False)
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shutdown_bringup_interface(tgen, router.name, intf, True)
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intf_file = "{}/{}/pbr-interface.json".format(CWD, router.name)
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logger.info(intf_file)
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# Read expected result from file
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expected = json.loads(open(intf_file).read())
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# Actual output from router
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test_func = partial(topotest.router_json_cmp, router, "show pbr interface json", expected)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"show pbr interface" mismatches on {}'.format(router.name)
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if result is not None:
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gather_pbr_data_on_error(router)
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assert result is None, assertmsg
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def test_rule_linux_installation():
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"Ensure that rule is installed in the kernel"
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tgen = get_topogen()
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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logger.info("Checking for installed PBR rules in OS")
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router_list = tgen.routers().values()
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for router in router_list:
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rules_file = "{}/{}/linux-rules.json".format(CWD, router.name)
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actual = topotest.ip_rules(router)
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expected = json.loads(open(rules_file).read())
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assertmsg = "Router {} OS rules mismatch".format(router.name)
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assert topotest.json_cmp(actual, expected) is None, assertmsg
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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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#
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# EXTRA SAUCE
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#
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def gather_pbr_data_on_error(router):
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logger.info(router.vtysh_cmd("show ip route"))
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logger.info(router.vtysh_cmd("show ip nexthop"))
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logger.info(router.vtysh_cmd("show pbr interface"))
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logger.info(router.vtysh_cmd("show pbr map"))
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logger.info(router.vtysh_cmd("show pbr nexthop-groups"))
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logger.info(router.vtysh_cmd("show nexthop-group rib singleton"))
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logger.info(router.vtysh_cmd("show nexthop-group rib"))
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logger.info(router.run("ip nexthop show"))
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logger.info(router.run("ip route show"))
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logger.info(router.run("ip route show table 10000"))
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logger.info(router.run("ip route show table 10001"))
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logger.info(router.run("ip route show table 10002"))
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logger.info(router.run("ip route show table 10003"))
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logger.info(router.run("ip route show table 10004"))
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logger.info(router.run("ip rule show"))
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