smoketest: flow-accounting: add initial - basic - testcase

1 files changed, 80 insertions, 0 deletions

diff --git a/smoketest/scripts/cli/test_system_flow-accounting.py b/smoketest/scripts/cli/test_system_flow-accounting.py
new file mode 100755
index 000000000..a2b5b1481
--- /dev/null
+++ b/smoketest/scripts/cli/test_system_flow-accounting.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 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.util import cmd
+from vyos.util import process_named_running
+from vyos.util import read_file
+
+PROCESS_NAME = 'uacctd'
+base_path = ['system', 'flow-accounting']
+
+uacctd_conf = '/etc/pmacct/uacctd.conf'
+
+class TestSystemFlowAccounting(VyOSUnitTestSHIM.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        super(cls, 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):
+        self.cli_delete(base_path)
+        self.cli_commit()
+
+        # after service removal process must no longer run
+        self.assertFalse(process_named_running(PROCESS_NAME))
+
+    def test_basic(self):
+        buffer_size = '5' # MiB
+        self.cli_set(base_path + ['buffer-size', buffer_size])
+
+        # You need to configure at least one interface for flow-accounting
+        with self.assertRaises(ConfigSessionError):
+            self.cli_commit()
+        for interface in Section.interfaces('ethernet'):
+            self.cli_set(base_path + ['interface', interface])
+
+        # commit changes
+        self.cli_commit()
+
+        # verify configuration
+        tmp = cmd('sudo iptables-save -t raw')
+        for interface in Section.interfaces('ethernet'):
+            self.assertIn(f'-A VYATTA_CT_PREROUTING_HOOK -i {interface} -m comment --comment FLOW_ACCOUNTING_RULE -j NFLOG --nflog-group 2 --nflog-size 128 --nflog-threshold 100', tmp)
+
+        uacctd = read_file(uacctd_conf)
+        # circular queue size - buffer_size
+        tmp = int(buffer_size) *1024 *1024
+        self.assertIn(f'plugin_pipe_size: {tmp}', uacctd)
+        # transfer buffer size - recommended value from pmacct developers 1/1000 of pipe size
+        tmp = int(buffer_size) *1024 *1024
+        # do an integer division
+        tmp //= 1000
+        self.assertIn(f'plugin_buffer_size: {tmp}', uacctd)
+
+        # Check for running process
+        self.assertTrue(process_named_running(PROCESS_NAME))
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)