tests/topotests/bgp_default_route_route_map_match2/test_bgp_default-originate_route-map_match2.py

   1 #!/usr/bin/env python
   2
   3 # Copyright (c) 2021 by
   4 # Donatas Abraitis <donatas.abraitis@gmail.com>
   5 #
   6 # Permission to use, copy, modify, and/or distribute this software
   7 # for any purpose with or without fee is hereby granted, provided
   8 # that the above copyright notice and this permission notice appear
   9 # in all copies.
  10 #
  11 # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
  12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
  14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  15 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  16 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  17 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  18 # OF THIS SOFTWARE.
  19 #
  20
  21 """
  22 Test if default-originate works with conditional match.
  23 If 10.0.0.0/22 is recived from r2, then we announce 0.0.0.0/0
  24 to r2.
  25 """
  26
  27 import os
  28 import sys
  29 import json
  30 import time
  31 import pytest
  32 import functools
  33
  34 CWD = os.path.dirname(os.path.realpath(__file__))
  35 sys.path.append(os.path.join(CWD, "../"))
  36
  37 # pylint: disable=C0413
  38 from lib import topotest
  39 from lib.topogen import Topogen, TopoRouter, get_topogen
  40 from lib.topolog import logger
  41 from mininet.topo import Topo
  42 from lib.common_config import step
  43
  44
  45 class TemplateTopo(Topo):
  46     def build(self, *_args, **_opts):
  47         tgen = get_topogen(self)
  48
  49         for routern in range(1, 3):
  50             tgen.add_router("r{}".format(routern))
  51
  52         switch = tgen.add_switch("s1")
  53         switch.add_link(tgen.gears["r1"])
  54         switch.add_link(tgen.gears["r2"])
  55
  56
  57 def setup_module(mod):
  58     tgen = Topogen(TemplateTopo, mod.__name__)
  59     tgen.start_topology()
  60
  61     router_list = tgen.routers()
  62
  63     for i, (rname, router) in enumerate(router_list.items(), 1):
  64         router.load_config(
  65             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  66         )
  67         router.load_config(
  68             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
  69         )
  70
  71     tgen.start_router()
  72
  73
  74 def teardown_module(mod):
  75     tgen = get_topogen()
  76     tgen.stop_topology()
  77
  78
  79 def test_bgp_default_originate_route_map():
  80     tgen = get_topogen()
  81
  82     if tgen.routers_have_failure():
  83         pytest.skip(tgen.errors)
  84
  85     router = tgen.gears["r2"]
  86
  87     def _bgp_converge(router):
  88         output = json.loads(router.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json"))
  89         expected = {
  90             "192.168.255.1": {
  91                 "bgpState": "Established",
  92                 "addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 1}},
  93             }
  94         }
  95         return topotest.json_cmp(output, expected)
  96
  97     def _bgp_default_route_is_valid(router):
  98         output = json.loads(router.vtysh_cmd("show ip bgp 0.0.0.0/0 json"))
  99         expected = {"paths": [{"valid": True}]}
 100         return topotest.json_cmp(output, expected)
 101
 102     step("Converge network")
 103     test_func = functools.partial(_bgp_converge, router)
 104     success, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5)
 105     assert result is None, "Failed to see bgp convergence at r2"
 106
 107     step("Withdraw 10.0.0.0/22 from R2")
 108     router.vtysh_cmd(
 109         "conf t\nrouter bgp\naddress-family ipv4\nno redistribute connected"
 110     )
 111
 112     step("Check if we don't have 0.0.0.0/0 at R2")
 113     test_func = functools.partial(_bgp_default_route_is_valid, router)
 114     success, result = topotest.run_and_expect(test_func, not None, count=30, wait=0.5)
 115     assert result is not None, "0.0.0.0/0 exists at r2"
 116
 117     step("Announce 10.0.0.0/22 from R2")
 118     router.vtysh_cmd("conf t\nrouter bgp\naddress-family ipv4\nredistribute connected")
 119
 120     step("Check if we have 0.0.0.0/0 at R2")
 121     test_func = functools.partial(_bgp_default_route_is_valid, router)
 122     success, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5)
 123     assert result is None, "0.0.0.0/0 does not exist at r2"
 124
 125     step("Withdraw 10.0.0.0/22 from R2 again")
 126     router.vtysh_cmd(
 127         "conf t\nrouter bgp\naddress-family ipv4\nno redistribute connected"
 128     )
 129
 130     step("Check if we don't have 0.0.0.0/0 at R2 again")
 131     test_func = functools.partial(_bgp_default_route_is_valid, router)
 132     success, result = topotest.run_and_expect(test_func, not None, count=30, wait=0.5)
 133     assert result is not None, "0.0.0.0/0 exists at r2"
 134
 135
 136 if __name__ == "__main__":
 137     args = ["-s"] + sys.argv[1:]
 138     sys.exit(pytest.main(args))