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#!/usr/bin/env python3
import unittest
import psutil
import sys
import six
from vpp_papi.vpp_stats import VPPStats
from framework import tag_fixme_vpp_workers
from framework import VppTestCase, VppTestRunner
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP
@tag_fixme_vpp_workers
class StatsClientTestCase(VppTestCase):
"""Test Stats Client"""
@classmethod
def setUpClass(cls):
super(StatsClientTestCase, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(StatsClientTestCase, cls).tearDownClass()
@classmethod
def setUpConstants(cls):
cls.extra_vpp_statseg_config = "per-node-counters on"
cls.extra_vpp_statseg_config += "update-interval 0.05"
super(StatsClientTestCase, cls).setUpConstants()
def test_set_errors(self):
"""Test set errors"""
self.assertEqual(self.statistics.set_errors(), {})
self.assertEqual(
self.statistics.get_counter('/err/ethernet-input/no error'), [0])
def test_client_fd_leak(self):
"""Test file descriptor count - VPP-1486"""
cls = self.__class__
p = psutil.Process()
initial_fds = p.num_fds()
for _ in range(100):
stats = VPPStats(socketname=cls.get_stats_sock_path())
stats.disconnect()
ending_fds = p.num_fds()
self.assertEqual(initial_fds, ending_fds,
"initial client side file descriptor count: %s "
"is not equal to "
"ending client side file descriptor count: %s" % (
initial_fds, ending_fds))
def test_symlink_values(self):
"""Test symlinks reported values"""
self.create_pg_interfaces(range(2))
for i in self.pg_interfaces:
i.admin_up()
i.config_ip4()
i.resolve_arp()
p = list()
for i in range(5):
packet = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4))
p.append(packet)
self.send_and_expect(self.pg0, p, self.pg1)
pg1_tx = self.statistics.get_counter('/interfaces/pg1/tx')
if_tx = self.statistics.get_counter('/if/tx')
self.assertEqual(pg1_tx[0]['bytes'],
if_tx[0][self.pg1.sw_if_index]['bytes'])
for i in self.pg_interfaces:
i.unconfig()
i.admin_down()
def test_symlink_add_del_interfaces(self):
"""Test symlinks when adding and deleting interfaces"""
# We first create and delete interfaces
self.create_loopback_interfaces(1)
self.create_pg_interfaces(range(1))
self.loop0.remove_vpp_config()
self.create_pg_interfaces(range(2))
for i in self.pg_interfaces:
i.admin_up()
i.config_ip4()
i.resolve_arp()
p = list()
bytes_to_send = 0
for i in range(5):
packet = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4))
bytes_to_send += len(packet)
p.append(packet)
tx_before_sending = self.statistics.get_counter('/interfaces/pg1/tx')
rx_before_sending = self.statistics.get_counter('/interfaces/pg0/rx')
self.send_and_expect(self.pg0, p, self.pg1)
tx = self.statistics.get_counter('/interfaces/pg1/tx')
rx = self.statistics.get_counter('/interfaces/pg0/rx')
# We wait for nodes symlinks to update (interfaces created/deleted).
# ... and packets to be sent
self.sleep(0.1)
for _ in range(5):
try:
vectors = self.statistics.get_counter('/nodes/pg1-tx/vectors')
if vectors[0] == 0:
raise ValueError("Nodes counters are not up to date")
break
except:
t, v, tb = sys.exc_info()
self.sleep(0.1)
continue
else:
six.reraise(t, v, tb)
self.assertEqual(tx[0]['bytes'] - tx_before_sending[0]['bytes'],
bytes_to_send)
self.assertEqual(tx[0]['packets'] - tx_before_sending[0]['packets'],
5)
self.assertEqual(rx[0]['bytes'] - rx_before_sending[0]['bytes'],
bytes_to_send)
self.assertEqual(rx[0]['packets'] - rx_before_sending[0]['packets'],
5)
self.assertEqual(vectors[0], rx[0]['packets'])
for i in self.pg_interfaces:
i.unconfig()
i.admin_down()
def test_index_consistency(self):
"""Test index consistency despite changes in the stats"""
d = self.statistics.ls(['/if/names'])
self.create_loopback_interfaces(10)
for i in range(10):
try:
s = self.statistics.dump(d)
break
except:
pass
k, v = s.popitem()
self.assertEqual(len(v), 11)
for i in self.lo_interfaces:
i.remove_vpp_config()
@unittest.skip("Manual only")
def test_mem_leak(self):
def loop():
print('Running loop')
for i in range(50):
rv = self.vapi.papi.tap_create_v2(id=i, use_random_mac=1)
self.assertEqual(rv.retval, 0)
rv = self.vapi.papi.tap_delete_v2(sw_if_index=rv.sw_if_index)
self.assertEqual(rv.retval, 0)
before = self.statistics.get_counter('/mem/statseg/used')
loop()
self.vapi.cli("memory-trace on stats-segment")
for j in range(100):
loop()
print(self.vapi.cli("show memory stats-segment verbose"))
print('AFTER', before,
self.statistics.get_counter('/mem/statseg/used'))
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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