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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
# Copyright (c) 2022, University of Rome Tor Vergata
# Authored by Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
#
"""
test_srv6_manager.py:
Test for SRv6 manager on zebra
"""
import os
import sys
import json
import pytest
import functools
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
pytestmark = [pytest.mark.bgpd, pytest.mark.sharpd]
def open_json_file(filename):
try:
with open(filename, "r") as f:
return json.load(f)
except IOError:
assert False, "Could not read file {}".format(filename)
def setup_module(mod):
tgen = Topogen({None: "r1"}, mod.__name__)
tgen.start_topology()
for rname, router in tgen.routers().items():
router.run("/bin/bash {}/{}/setup.sh".format(CWD, rname))
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
router.load_config(
TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname))
)
tgen.start_router()
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_srv6():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
router = tgen.gears["r1"]
def _check_srv6_locator(router, expected_locator_file):
logger.info("checking zebra locator status")
output = json.loads(router.vtysh_cmd("show segment-routing srv6 locator json"))
expected = open_json_file("{}/{}".format(CWD, expected_locator_file))
return topotest.json_cmp(output, expected)
def _check_sharpd_chunk(router, expected_chunk_file):
logger.info("checking sharpd locator chunk status")
output = json.loads(router.vtysh_cmd("show sharp segment-routing srv6 json"))
expected = open_json_file("{}/{}".format(CWD, expected_chunk_file))
return topotest.json_cmp(output, expected)
def check_srv6_locator(router, expected_file):
func = functools.partial(_check_srv6_locator, router, expected_file)
success, result = topotest.run_and_expect(func, None, count=10, wait=0.5)
assert result is None, "Failed"
def check_sharpd_chunk(router, expected_file):
func = functools.partial(_check_sharpd_chunk, router, expected_file)
success, result = topotest.run_and_expect(func, None, count=10, wait=0.5)
assert result is None, "Failed"
# FOR DEVELOPER:
# If you want to stop some specific line and start interactive shell,
# please use tgen.mininet_cli() to start it.
logger.info("Test1 for Locator Configuration")
check_srv6_locator(router, "expected_locators1.json")
check_sharpd_chunk(router, "expected_chunks1.json")
logger.info("Test2 get chunk for locator loc1")
router.vtysh_cmd("sharp srv6-manager get-locator-chunk loc1")
check_srv6_locator(router, "expected_locators2.json")
check_sharpd_chunk(router, "expected_chunks2.json")
logger.info("Test3 release chunk for locator loc1")
router.vtysh_cmd("sharp srv6-manager release-locator-chunk loc1")
check_srv6_locator(router, "expected_locators3.json")
check_sharpd_chunk(router, "expected_chunks3.json")
logger.info("Test4 additional locator loc3")
router.vtysh_cmd(
"""
configure terminal
segment-routing
srv6
locators
locator loc3
prefix 2001:db8:3::/48 block-len 32 node-len 16 func-bits 16
"""
)
check_srv6_locator(router, "expected_locators4.json")
check_sharpd_chunk(router, "expected_chunks4.json")
logger.info("Test5 delete locator and chunk is released automatically")
router.vtysh_cmd(
"""
configure terminal
segment-routing
srv6
locators
no locator loc1
"""
)
check_srv6_locator(router, "expected_locators5.json")
check_sharpd_chunk(router, "expected_chunks5.json")
logger.info("Test6 delete srv6 all configuration")
router.vtysh_cmd(
"""
configure terminal
segment-routing
no srv6
"""
)
check_srv6_locator(router, "expected_locators6.json")
check_sharpd_chunk(router, "expected_chunks6.json")
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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