225 lines
6.5 KiB
Python
225 lines
6.5 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_pim_basic_topo2.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2021 by
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# Network Device Education Foundation, Inc. ("NetDEF")
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#
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"""
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test_pim_basic_topo2.py: Test the FRR PIM protocol convergence.
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"""
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import os
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import sys
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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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pytestmark = [pytest.mark.bfdd, pytest.mark.pimd]
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def build_topo(tgen):
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"Build function"
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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["r2"])
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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(build_topo, 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 = "{}/{}/pimd.conf".format(CWD, rname)
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if os.path.isfile(daemon_file):
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router.load_config(TopoRouter.RD_PIM, 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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# Initialize all routers.
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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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tgen.stop_topology()
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def expect_neighbor(router, interface, peer):
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"Wait until peer is present on interface."
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logger.info("waiting peer {} in {}".format(peer, interface))
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tgen = get_topogen()
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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 ip pim neighbor json",
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{interface: {peer: {}}},
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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 = '"{}" PIM convergence failure'.format(router)
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assert result is None, assertmsg
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def test_wait_pim_convergence():
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"Wait for PIM 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 PIM to converge")
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expect_neighbor("r1", "r1-eth0", "192.168.1.2")
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expect_neighbor("r2", "r2-eth0", "192.168.1.1")
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expect_neighbor("r2", "r2-eth1", "192.168.2.3")
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expect_neighbor("r2", "r2-eth2", "192.168.3.4")
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expect_neighbor("r3", "r3-eth0", "192.168.2.1")
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expect_neighbor("r4", "r4-eth0", "192.168.3.1")
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def test_bfd_peers():
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"Wait for BFD peers to show up."
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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 BFD to converge")
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def expect_bfd_peer(router, peer):
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"Wait until peer is present on interface."
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logger.info("waiting BFD peer {} in {}".format(peer, 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 bfd peers json",
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[{"peer": peer, "status": "up"}],
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)
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_, result = topotest.run_and_expect(test_func, None, count=10, wait=1)
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assertmsg = '"{}" BFD convergence failure'.format(router)
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assert result is None, assertmsg
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expect_bfd_peer("r1", "192.168.1.2")
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expect_bfd_peer("r2", "192.168.1.1")
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expect_bfd_peer("r2", "192.168.2.3")
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expect_bfd_peer("r2", "192.168.3.4")
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expect_bfd_peer("r3", "192.168.2.1")
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expect_bfd_peer("r4", "192.168.3.1")
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def test_pim_reconvergence():
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"Disconnect a peer and expect it to disconnect."
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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 disconnect convergence")
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tgen.gears["r4"].link_enable("r4-eth0", enabled=False)
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def expect_neighbor_down(router, interface, peer):
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"Wait until peer is present on interface."
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logger.info("waiting peer {} in {} to disappear".format(peer, interface))
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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 ip pim neighbor json",
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{interface: {peer: None}},
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)
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_, result = topotest.run_and_expect(test_func, None, count=5, wait=1)
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assertmsg = '"{}" PIM convergence failure'.format(router)
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assert result is None, assertmsg
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expect_neighbor_down("r2", "r2-eth2", "192.168.3.4")
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logger.info("waiting for reconvergence")
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tgen.gears["r4"].link_enable("r4-eth0", enabled=True)
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expect_neighbor("r2", "r2-eth2", "192.168.3.4")
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def test_pim_bfd_profile():
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"Test that the BFD profile is properly applied in BFD."
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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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def expect_bfd_peer_settings(router, settings):
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"Expect the following BFD configuration"
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logger.info("Verifying BFD peer {} in {}".format(settings["peer"], 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 bfd peers json",
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[settings],
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)
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_, result = topotest.run_and_expect(test_func, None, count=5, wait=1)
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assertmsg = '"{}" BFD convergence failure'.format(router)
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assert result is None, assertmsg
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expect_bfd_peer_settings(
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"r1",
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{
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"peer": "192.168.1.2",
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"receive-interval": 250,
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"transmit-interval": 250,
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},
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)
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expect_bfd_peer_settings(
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"r2",
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{
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"peer": "192.168.1.1",
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"remote-receive-interval": 250,
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"remote-transmit-interval": 250,
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},
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)
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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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