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03252d60 | 1 | #!/usr/bin/env python |
acddc0ed | 2 | # SPDX-License-Identifier: ISC |
03252d60 DA |
3 | |
4 | # | |
5 | # bgp_set_local-preference_add_subtract.py | |
6 | # Part of NetDEF Topology Tests | |
7 | # | |
8 | # Copyright (c) 2020 by | |
9 | # Donatas Abraitis <donatas.abraitis@gmail.com> | |
10 | # | |
03252d60 DA |
11 | |
12 | """ | |
13 | bgp_set_local-preference_add_subtract.py: | |
14 | Test if we can add/subtract the value to/from an existing | |
15 | LOCAL_PREF in route-maps. | |
16 | """ | |
17 | ||
18 | import os | |
19 | import sys | |
20 | import json | |
03252d60 DA |
21 | import pytest |
22 | import functools | |
23 | ||
24 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
787e7624 | 25 | sys.path.append(os.path.join(CWD, "../")) |
03252d60 DA |
26 | |
27 | # pylint: disable=C0413 | |
28 | from lib import topotest | |
29 | from lib.topogen import Topogen, TopoRouter, get_topogen | |
03252d60 | 30 | |
bf3a0a9a DS |
31 | pytestmark = [pytest.mark.bgpd] |
32 | ||
787e7624 | 33 | |
e82b531d CH |
34 | def build_topo(tgen): |
35 | for routern in range(1, 4): | |
36 | tgen.add_router("r{}".format(routern)) | |
03252d60 | 37 | |
e82b531d CH |
38 | switch = tgen.add_switch("s1") |
39 | switch.add_link(tgen.gears["r1"]) | |
40 | switch.add_link(tgen.gears["r2"]) | |
41 | switch.add_link(tgen.gears["r3"]) | |
03252d60 | 42 | |
03252d60 DA |
43 | |
44 | def setup_module(mod): | |
e82b531d | 45 | tgen = Topogen(build_topo, mod.__name__) |
03252d60 DA |
46 | tgen.start_topology() |
47 | ||
48 | router_list = tgen.routers() | |
49 | ||
e5f0ed14 | 50 | for i, (rname, router) in enumerate(router_list.items(), 1): |
03252d60 | 51 | router.load_config( |
787e7624 | 52 | TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname)) |
03252d60 DA |
53 | ) |
54 | router.load_config( | |
787e7624 | 55 | TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname)) |
03252d60 DA |
56 | ) |
57 | ||
58 | tgen.start_router() | |
59 | ||
787e7624 | 60 | |
03252d60 DA |
61 | def teardown_module(mod): |
62 | tgen = get_topogen() | |
63 | tgen.stop_topology() | |
64 | ||
787e7624 | 65 | |
03252d60 DA |
66 | def test_bgp_set_local_preference(): |
67 | tgen = get_topogen() | |
68 | ||
69 | if tgen.routers_have_failure(): | |
70 | pytest.skip(tgen.errors) | |
71 | ||
787e7624 | 72 | router = tgen.gears["r1"] |
03252d60 DA |
73 | |
74 | def _bgp_converge(router): | |
75 | output = json.loads(router.vtysh_cmd("show ip bgp neighbor json")) | |
76 | expected = { | |
787e7624 | 77 | "192.168.255.2": { |
78 | "bgpState": "Established", | |
0f05ea43 | 79 | "addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 3}}, |
787e7624 | 80 | }, |
81 | "192.168.255.3": { | |
82 | "bgpState": "Established", | |
0f05ea43 | 83 | "addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 3}}, |
03252d60 | 84 | }, |
03252d60 DA |
85 | } |
86 | return topotest.json_cmp(output, expected) | |
87 | ||
88 | def _bgp_check_local_preference(router): | |
0f05ea43 | 89 | output = json.loads(router.vtysh_cmd("show bgp ipv4 unicast json")) |
03252d60 | 90 | expected = { |
0f05ea43 DA |
91 | "routes": { |
92 | "10.10.10.2/32": [{"locPrf": 160}], | |
93 | "10.10.10.3/32": [{"locPrf": 40}], | |
94 | "172.16.255.254/32": [ | |
95 | {"locPrf": 50, "nexthops": [{"ip": "192.168.255.3"}]}, | |
96 | {"locPrf": 150, "nexthops": [{"ip": "192.168.255.2"}]}, | |
97 | ], | |
98 | } | |
03252d60 DA |
99 | } |
100 | return topotest.json_cmp(output, expected) | |
101 | ||
102 | test_func = functools.partial(_bgp_converge, router) | |
103 | success, result = topotest.run_and_expect(test_func, None, count=15, wait=0.5) | |
104 | ||
105 | assert result is None, 'Failed to see BGP convergence in "{}"'.format(router) | |
106 | ||
107 | test_func = functools.partial(_bgp_check_local_preference, router) | |
108 | success, result = topotest.run_and_expect(test_func, None, count=15, wait=0.5) | |
109 | ||
787e7624 | 110 | assert result is None, 'Failed to see applied BGP local-preference in "{}"'.format( |
111 | router | |
112 | ) | |
113 | ||
03252d60 | 114 | |
787e7624 | 115 | if __name__ == "__main__": |
03252d60 DA |
116 | args = ["-s"] + sys.argv[1:] |
117 | sys.exit(pytest.main(args)) |