def _wait_for_counter_to_stop(test, switch_thrift, counter, delay,
max_queue_time=2.5):
# wait for counter to stop incrementing,
# so no old/queued packets corrupt our test data
# 2.5 is a bit of a mgaic number because of the current
# counter bump queuing delay of 2 seconcs as described at the
# top of this file
npkts_start = get_fb303_counter(switch_thrift,
counter,
test.log)
start = time.time()
while (start + delay) > time.time():
# assume no packets queued for more than max_queue seconds
time.sleep(max_queue_time)
npkts_before = get_fb303_counter(switch_thrift,
counter,
test.log)
if npkts_before != npkts_start:
# need to wait longer
npkts_start = npkts_before
else:
break
test.assertEqual(npkts_before, npkts_start,
"Packets never stopped; test broken!?")
return npkts_before
def test_port_status_matchfb303(self):
self.test_topology.min_hosts_or_skip(1)
mismatch_ports = []
with self.test_topology.switch_thrift() as sw_client:
all_port_info = sw_client.getAllPortInfo()
for _pnum, pstate in all_port_info.items():
is_port_up = pstate.operState == PortOperState.UP
fb303_counter = get_fb303_counter(sw_client,
'%s.up' % (pstate.name))
fb303_is_port_up = fb303_counter == 1
if is_port_up != fb303_is_port_up:
mismatch_ports.append(
(pstate.name, pstate.operState, fb303_counter)
)
self.assertEqual(
len(mismatch_ports),
0,
msg="There are %d/%d mismatch ports: %s" % (
len(mismatch_ports), len(all_port_info), ', '.join(
[
'%s (operState: %s, fb303_counter: %s' %
(name, is_port_up, fb303_is_port_up)
for name, is_port_up, fb303_is_port_up in mismatch_ports
]
)
)
)
def _wait_for_pkts_to_be_counted(test, switch_thrift, counter, sent_pkts,
delay, npkts_before):
# wait for counter to increment at least sent_pkts times before delay
start = time.time()
found = False
while not found and (start + delay) > time.time():
npkts_after = get_fb303_counter(switch_thrift, counter)
if npkts_after >= npkts_before + sent_pkts:
found = True
else:
time.sleep(0.5) # sleep a little intead of busy wait
delta = time.time() - start
# TODO log to scuba and track time delta
# to expose/track stats thread lag/latency -- seems to be 1-5 seconds!?
test.log.info("Packets after: %d secs %f" % (npkts_after, delta))
return npkts_after
