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#!/usr/bin/env python3
import unittest
import psutil
from vpp_papi.vpp_stats import VPPStats
from framework import VppTestCase
from asfframework import VppTestRunner
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP
class StatsClientTestCase(VppTestCase):
"""Test Stats Client"""
@classmethod
def setUpClass(cls):
super(StatsClientTestCase, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(StatsClientTestCase, cls).tearDownClass()
def setUp(self):
super(StatsClientTestCase, self).setUp()
self.create_pg_interfaces([])
def tearDown(self):
super(StatsClientTestCase, self).tearDown()
for i in self.pg_interfaces:
i.unconfig()
i.admin_down()
@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] * (1 + self.vpp_worker_count),
)
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"])
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).
self.virtual_sleep(1)
vectors = self.statistics.get_counter("/nodes/pg1-tx/vectors")
rx_bytes = 0
rx_packets = 0
tx_bytes = 0
tx_packets = 0
for i in range(1 + self.vpp_worker_count):
rx_bytes += rx[i]["bytes"] - rx_before_sending[i]["bytes"]
rx_packets += rx[i]["packets"] - rx_before_sending[i]["packets"]
tx_bytes += tx[i]["bytes"] - tx_before_sending[i]["bytes"]
tx_packets += tx[i]["packets"] - tx_before_sending[i]["packets"]
self.assertEqual(tx_bytes, bytes_to_send)
self.assertEqual(tx_packets, 5)
self.assertEqual(rx_bytes, bytes_to_send)
self.assertEqual(rx_packets, 5)
self.assertEqual(vectors[0], rx[0]["packets"])
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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