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test_system_sflow.py
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test_system_sflow.py
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#!/usr/bin/env python3
#
# Copyright (C) 2023-2024 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.utils.process import cmd
from vyos.utils.process import process_named_running
from vyos.utils.file import read_file
PROCESS_NAME = 'hsflowd'
base_path = ['system', 'sflow']
vrf = 'mgmt'
hsflowd_conf = '/run/sflow/hsflowd.conf'
class TestSystemFlowAccounting(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(TestSystemFlowAccounting, cls).setUpClass()
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
cls.cli_delete(cls, base_path)
def tearDown(self):
# after service removal process must no longer run
self.assertTrue(process_named_running(PROCESS_NAME))
self.cli_delete(base_path)
self.cli_delete(['vrf', 'name', vrf])
self.cli_commit()
# after service removal process must no longer run
self.assertFalse(process_named_running(PROCESS_NAME))
def test_sflow(self):
agent_address = '192.0.2.5'
agent_interface = 'eth0'
polling = '24'
sampling_rate = '128'
server = '192.0.2.254'
local_server = '127.0.0.1'
port = '8192'
default_port = '6343'
mon_limit = '50'
self.cli_set(
['interfaces', 'dummy', 'dum0', 'address', f'{agent_address}/24'])
self.cli_set(base_path + ['agent-address', agent_address])
self.cli_set(base_path + ['agent-interface', agent_interface])
# You need to configure at least one interface for sflow
with self.assertRaises(ConfigSessionError):
self.cli_commit()
for interface in Section.interfaces('ethernet'):
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['polling', polling])
self.cli_set(base_path + ['sampling-rate', sampling_rate])
self.cli_set(base_path + ['server', server, 'port', port])
self.cli_set(base_path + ['server', local_server])
self.cli_set(base_path + ['drop-monitor-limit', mon_limit])
# commit changes
self.cli_commit()
# verify configuration
hsflowd = read_file(hsflowd_conf)
self.assertIn(f'polling={polling}', hsflowd)
self.assertIn(f'sampling={sampling_rate}', hsflowd)
self.assertIn(f'agentIP={agent_address}', hsflowd)
self.assertIn(f'agent={agent_interface}', hsflowd)
self.assertIn(f'collector {{ ip = {server} udpport = {port} }}', hsflowd)
self.assertIn(f'collector {{ ip = {local_server} udpport = {default_port} }}', hsflowd)
self.assertIn(f'dropmon {{ limit={mon_limit} start=on sw=on hw=off }}', hsflowd)
self.assertIn('dbus { }', hsflowd)
for interface in Section.interfaces('ethernet'):
self.assertIn(f'pcap {{ dev={interface} }}', hsflowd)
def test_sflow_ipv6(self):
sampling_rate = '100'
default_polling = '30'
default_port = '6343'
sflow_server = {
'2001:db8::1': {},
'2001:db8::2': {'port': '8023'},
}
for interface in Section.interfaces('ethernet'):
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['sampling-rate', sampling_rate])
for server, server_config in sflow_server.items():
self.cli_set(base_path + ['server', server])
if 'port' in server_config:
self.cli_set(base_path + ['server', server, 'port', server_config['port']])
# commit changes
self.cli_commit()
# verify configuration
hsflowd = read_file(hsflowd_conf)
self.assertIn(f'sampling={sampling_rate}', hsflowd)
self.assertIn(f'polling={default_polling}', hsflowd)
for server, server_config in sflow_server.items():
if 'port' in server_config:
self.assertIn(f'collector {{ ip = {server} udpport = {server_config["port"]} }}', hsflowd)
else:
self.assertIn(f'collector {{ ip = {server} udpport = {default_port} }}', hsflowd)
def test_vrf(self):
interface = 'eth0'
server = '192.0.2.1'
# Check if sFlow service can be bound to given VRF
self.cli_set(['vrf', 'name', vrf, 'table', '10100'])
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['server', server])
self.cli_set(base_path + ['vrf', vrf])
# commit changes
self.cli_commit()
# verify configuration
hsflowd = read_file(hsflowd_conf)
self.assertIn(f'collector {{ ip = {server} udpport = 6343 }}', hsflowd) # default port
self.assertIn(f'pcap {{ dev=eth0 }}', hsflowd)
# Check for process in VRF
tmp = cmd(f'ip vrf pids {vrf}')
self.assertIn(PROCESS_NAME, tmp)
if __name__ == '__main__':
unittest.main(verbosity=2)

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