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5 # Part of NetDEF Topology Tests
7 # Copyright (c) 2020 by Volta Networks
9 # Permission to use, copy, modify, and/or distribute this software
10 # for any purpose with or without fee is hereby granted, provided
11 # that the above copyright notice and this permission notice appear
14 # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
15 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
16 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
17 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
18 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
19 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
20 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
25 test_bgp_lu.py: Test BGP LU label allocation
31 from functools
import partial
34 # Save the Current Working Directory to find configuration files.
35 CWD
= os
.path
.dirname(os
.path
.realpath(__file__
))
36 sys
.path
.append(os
.path
.join(CWD
, "../"))
38 # pylint: disable=C0413
39 # Import topogen and topotest helpers
40 from lib
import topotest
41 from lib
.topogen
import Topogen
, TopoRouter
, get_topogen
43 # Required to instantiate the topology builder class.
46 pytestmark
= [pytest
.mark
.bgpd
]
49 # Basic scenario for BGP-LU. Nodes are directly connected.
50 # Node 3 is advertising many routes to 2, which advertises them
51 # as BGP-LU to 1; this way we get routes with actual labels, as
52 # opposed to implicit-null routes in the 2-node case.
54 # AS1 BGP-LU AS2 iBGP AS2
55 # +-----+ +-----+ +-----+
57 # | 1 +----------------+ 2 +-----------------+ 3 |
58 # | | 10.0.0.0/24 | | 10.0.1.0/24 | |
59 # +-----+ +-----+ +-----+
65 # This function only purpose is to define allocation and relationship
66 # between routers, switches and hosts.
75 switch
= tgen
.add_switch("s1")
76 switch
.add_link(tgen
.gears
["R1"])
77 switch
.add_link(tgen
.gears
["R2"])
80 switch
= tgen
.add_switch("s2")
81 switch
.add_link(tgen
.gears
["R2"])
82 switch
.add_link(tgen
.gears
["R3"])
85 def setup_module(mod
):
86 "Sets up the pytest environment"
87 # This function initiates the topology build with Topogen...
88 tgen
= Topogen(build_topo
, mod
.__name
__)
89 # ... and here it calls Mininet initialization functions.
92 # This is a sample of configuration loading.
93 router_list
= tgen
.routers()
95 # For all registred routers, load the zebra configuration file
96 for rname
, router
in router_list
.items():
98 TopoRouter
.RD_ZEBRA
, os
.path
.join(CWD
, "{}/zebra.conf".format(rname
))
101 TopoRouter
.RD_BGP
, os
.path
.join(CWD
, "{}/bgpd.conf".format(rname
))
104 # After loading the configurations, this function loads configured daemons.
108 def teardown_module(mod
):
109 "Teardown the pytest environment"
112 # This function tears down the whole topology.
116 def check_labelpool(router
):
117 json_file
= "{}/{}/labelpool.summ.json".format(CWD
, router
.name
)
118 expected
= json
.loads(open(json_file
).read())
121 topotest
.router_json_cmp
, router
, "show bgp labelpool summary json", expected
123 _
, result
= topotest
.run_and_expect(test_func
, None, count
=20, wait
=1)
124 assertmsg
= '"{}" JSON output mismatches - Did not converge'.format(router
.name
)
125 assert result
is None, assertmsg
128 def test_converge_bgplu():
129 "Wait for protocol convergence"
132 # Don't run this test if we have any failure.
133 if tgen
.routers_have_failure():
134 pytest
.skip(tgen
.errors
)
136 # tgen.mininet_cli();
137 r1
= tgen
.gears
["R1"]
138 r2
= tgen
.gears
["R2"]
144 def test_clear_bgplu():
145 "Wait for protocol convergence"
148 # Don't run this test if we have any failure.
149 if tgen
.routers_have_failure():
150 pytest
.skip(tgen
.errors
)
152 # tgen.mininet_cli();
153 r1
= tgen
.gears
["R1"]
154 r2
= tgen
.gears
["R2"]
156 r1
.vtysh_cmd("clear bgp 10.0.0.2")
160 r2
.vtysh_cmd("clear bgp 10.0.1.3")
164 r1
.vtysh_cmd("clear bgp 10.0.0.2")
165 r2
.vtysh_cmd("clear bgp 10.0.1.3")
170 def test_memory_leak():
171 "Run the memory leak test and report results."
173 if not tgen
.is_memleak_enabled():
174 pytest
.skip("Memory leak test/report is disabled")
176 tgen
.report_memory_leaks()
179 if __name__
== "__main__":
180 args
= ["-s"] + sys
.argv
[1:]
181 sys
.exit(pytest
.main(args
))