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fragattacks/tests/hwsim/vm/parallel-vm.py
Jouni Malinen 4aaddecdd8 tests: Handle test retries through the same queue 
This removes the separate rerun step from the parallel-vm.py processing
and instead, simply requeues the failed test cases into the same queue
that is used for the initial run. This is simpler and more efficient
since reruns start as soon as any VM is ready for processing them
instead of having to wait for all VMs to complete the first round.
Furthermore, this allows VMs to be stopped sooner when no more test
cases remain and that is helpful especially with the time travel patches
that make the wait-for-next-test step in the VM use all available CPU.

Signed-off-by: Jouni Malinen <j@w1.fi>
2019-07-27 20:19:28 +03:00

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#!/usr/bin/env python3
#
# Parallel VM test case executor
# Copyright (c) 2014-2019, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
from __future__ import print_function
import curses
import fcntl
import logging
import os
import subprocess
import sys
import time
import errno
logger = logging.getLogger()
# Test cases that take significantly longer time to execute than average.
long_tests = ["ap_roam_open",
"wpas_mesh_password_mismatch_retry",
"wpas_mesh_password_mismatch",
"hostapd_oom_wpa2_psk_connect",
"ap_hs20_fetch_osu_stop",
"ap_roam_wpa2_psk",
"ibss_wpa_none_ccmp",
"nfc_wps_er_handover_pk_hash_mismatch_sta",
"go_neg_peers_force_diff_freq",
"p2p_cli_invite",
"sta_ap_scan_2b",
"ap_pmf_sta_unprot_deauth_burst",
"ap_bss_add_remove_during_ht_scan",
"wext_scan_hidden",
"autoscan_exponential",
"nfc_p2p_client",
"wnm_bss_keep_alive",
"ap_inactivity_disconnect",
"scan_bss_expiration_age",
"autoscan_periodic",
"discovery_group_client",
"concurrent_p2pcli",
"ap_bss_add_remove",
"wpas_ap_wps",
"wext_pmksa_cache",
"ibss_wpa_none",
"ap_ht_40mhz_intolerant_ap",
"ibss_rsn",
"discovery_pd_retries",
"ap_wps_setup_locked_timeout",
"ap_vht160",
"dfs_radar",
"dfs",
"dfs_ht40_minus",
"dfs_etsi",
"ap_acs_dfs",
"grpform_cred_ready_timeout",
"hostapd_oom_wpa2_eap_connect",
"wpas_ap_dfs",
"autogo_many",
"hostapd_oom_wpa2_eap",
"ibss_open",
"proxyarp_open_ebtables",
"proxyarp_open_ebtables_ipv6",
"radius_failover",
"obss_scan_40_intolerant",
"dbus_connect_oom",
"proxyarp_open",
"proxyarp_open_ipv6",
"ap_wps_iteration",
"ap_wps_iteration_error",
"ap_wps_pbc_timeout",
"ap_wps_http_timeout",
"p2p_go_move_reg_change",
"p2p_go_move_active",
"p2p_go_move_scm",
"p2p_go_move_scm_peer_supports",
"p2p_go_move_scm_peer_does_not_support",
"p2p_go_move_scm_multi"]
def get_failed(vm):
failed = []
for i in range(num_servers):
failed += vm[i]['failed']
return failed
def vm_read_stdout(vm, i, test_queue):
global total_started, total_passed, total_failed, total_skipped
global rerun_failures
global first_run_failures
ready = False
try:
out = vm['proc'].stdout.read()
if out == None:
return False
out = out.decode()
except IOError as e:
if e.errno == errno.EAGAIN:
return False
raise
logger.debug("VM[%d] stdout.read[%s]" % (i, out))
pending = vm['pending'] + out
lines = []
while True:
pos = pending.find('\n')
if pos < 0:
break
line = pending[0:pos].rstrip()
pending = pending[(pos + 1):]
logger.debug("VM[%d] stdout full line[%s]" % (i, line))
if line.startswith("READY"):
ready = True
elif line.startswith("PASS"):
ready = True
total_passed += 1
elif line.startswith("FAIL"):
ready = True
total_failed += 1
vals = line.split(' ')
if len(vals) < 2:
logger.info("VM[%d] incomplete FAIL line: %s" % (i, line))
name = line
else:
name = vals[1]
logger.debug("VM[%d] test case failed: %s" % (i, name))
vm['failed'].append(name)
if name != vm['current_name']:
logger.info("VM[%d] test result mismatch: %s (expected %s)" % (i, name, vm['current_name']))
else:
count = vm['current_count']
if count == 0:
first_run_failures.append(name)
if rerun_failures and count < 1:
logger.debug("Requeue test case %s" % name)
test_queue.append((name, vm['current_count'] + 1))
elif line.startswith("NOT-FOUND"):
ready = True
total_failed += 1
logger.info("VM[%d] test case not found" % i)
elif line.startswith("SKIP"):
ready = True
total_skipped += 1
elif line.startswith("START"):
total_started += 1
if len(vm['failed']) == 0:
vals = line.split(' ')
if len(vals) >= 2:
vm['fail_seq'].append(vals[1])
vm['out'] += line + '\n'
lines.append(line)
vm['pending'] = pending
return ready
def show_progress(scr):
global num_servers
global vm
global dir
global timestamp
global tests
global first_run_failures
global total_started, total_passed, total_failed, total_skipped
global rerun_failures
total_tests = len(tests)
logger.info("Total tests: %d" % total_tests)
test_queue = [(t, 0) for t in tests]
scr.leaveok(1)
scr.addstr(0, 0, "Parallel test execution status", curses.A_BOLD)
for i in range(0, num_servers):
scr.addstr(i + 1, 0, "VM %d:" % (i + 1), curses.A_BOLD)
scr.addstr(i + 1, 10, "starting VM")
scr.addstr(num_servers + 1, 0, "Total:", curses.A_BOLD)
scr.addstr(num_servers + 1, 20, "TOTAL={} STARTED=0 PASS=0 FAIL=0 SKIP=0".format(total_tests))
scr.refresh()
while True:
running = False
updated = False
for i in range(num_servers):
if not vm[i]['proc']:
continue
if vm[i]['proc'].poll() is not None:
vm[i]['proc'] = None
scr.move(i + 1, 10)
scr.clrtoeol()
log = '{}/{}.srv.{}/console'.format(dir, timestamp, i + 1)
with open(log, 'r') as f:
if "Kernel panic" in f.read():
scr.addstr("kernel panic")
logger.info("VM[%d] kernel panic" % i)
updated = True
if test_queue:
scr.addstr("unexpected exit")
logger.info("VM[%d] unexpected exit" % i)
updated = True
continue
running = True
try:
err = vm[i]['proc'].stderr.read()
if err != None:
err = err.decode()
vm[i]['err'] += err
logger.info("VM[%d] stderr.read[%s]" % (i, err))
except IOError as e:
if e.errno != errno.EAGAIN:
raise
if vm_read_stdout(vm[i], i, test_queue):
scr.move(i + 1, 10)
scr.clrtoeol()
updated = True
if not test_queue:
vm[i]['proc'].stdin.write(b'\n')
vm[i]['proc'].stdin.flush()
scr.addstr("shutting down")
logger.info("VM[%d] shutting down" % i)
continue
else:
(name, count) = test_queue.pop(0)
vm[i]['current_name'] = name
vm[i]['current_count'] = count
vm[i]['proc'].stdin.write(name.encode() + b'\n')
vm[i]['proc'].stdin.flush()
scr.addstr(name)
logger.debug("VM[%d] start test %s" % (i, name))
try:
err = vm[i]['proc'].stderr.read()
if err != None:
err = err.decode()
vm[i]['err'] += err
logger.debug("VM[%d] stderr.read[%s]" % (i, err))
except IOError as e:
if e.errno != errno.EAGAIN:
raise
if not running:
break
if updated:
scr.move(num_servers + 1, 10)
scr.clrtoeol()
scr.addstr("{} %".format(int(100.0 * (total_passed + total_failed + total_skipped) / total_tests)))
scr.addstr(num_servers + 1, 20, "TOTAL={} STARTED={} PASS={} FAIL={} SKIP={}".format(total_tests, total_started, total_passed, total_failed, total_skipped))
failed = get_failed(vm)
if len(failed) > 0:
scr.move(num_servers + 2, 0)
scr.clrtoeol()
scr.addstr("Failed test cases: ")
count = 0
for f in failed:
count += 1
if count > 30:
scr.addstr('...')
scr.clrtoeol()
break
scr.addstr(f)
scr.addstr(' ')
scr.refresh()
time.sleep(0.25)
for i in range(num_servers):
if not vm[i]['proc']:
continue
vm[i]['proc'] = None
scr.move(i + 1, 10)
scr.clrtoeol()
scr.addstr("still running")
logger.info("VM[%d] still running" % i)
scr.refresh()
time.sleep(0.3)
def main():
import argparse
import os
global num_servers
global vm
global dir
global timestamp
global tests
global first_run_failures
global total_started, total_passed, total_failed, total_skipped
global rerun_failures
total_started = 0
total_passed = 0
total_failed = 0
total_skipped = 0
debug_level = logging.INFO
rerun_failures = True
timestamp = int(time.time())
scriptsdir = os.path.dirname(os.path.realpath(sys.argv[0]))
p = argparse.ArgumentParser(description='run multiple testing VMs in parallel')
p.add_argument('num_servers', metavar='number of VMs', type=int, choices=range(1, 100),
help="number of VMs to start")
p.add_argument('-f', dest='testmodules', metavar='<test module>',
help='execute only tests from these test modules',
type=str, nargs='+')
p.add_argument('-1', dest='no_retry', action='store_const', const=True, default=False,
help="don't retry failed tests automatically")
p.add_argument('--debug', dest='debug', action='store_const', const=True, default=False,
help="enable debug logging")
p.add_argument('--codecov', dest='codecov', action='store_const', const=True, default=False,
help="enable code coverage collection")
p.add_argument('--shuffle-tests', dest='shuffle', action='store_const', const=True, default=False,
help="shuffle test cases to randomize order")
p.add_argument('--short', dest='short', action='store_const', const=True,
default=False,
help="only run short-duration test cases")
p.add_argument('--long', dest='long', action='store_const', const=True,
default=False,
help="include long-duration test cases")
p.add_argument('--valgrind', dest='valgrind', action='store_const',
const=True, default=False,
help="run tests under valgrind")
p.add_argument('--telnet', dest='telnet', metavar='<baseport>', type=int,
help="enable telnet server inside VMs, specify the base port here")
p.add_argument('params', nargs='*')
args = p.parse_args()
dir = os.environ.get('HWSIM_TEST_LOG_DIR', '/tmp/hwsim-test-logs')
try:
os.makedirs(dir)
except OSError as e:
if e.errno != errno.EEXIST:
raise
num_servers = args.num_servers
rerun_failures = not args.no_retry
if args.debug:
debug_level = logging.DEBUG
extra_args = []
if args.valgrind:
extra_args += ['--valgrind']
if args.long:
extra_args += ['--long']
if args.codecov:
print("Code coverage - build separate binaries")
logdir = os.path.join(dir, str(timestamp))
os.makedirs(logdir)
subprocess.check_call([os.path.join(scriptsdir, 'build-codecov.sh'),
logdir])
codecov_args = ['--codecov_dir', logdir]
codecov = True
else:
codecov_args = []
codecov = False
first_run_failures = []
if args.params:
tests = args.params
else:
tests = []
cmd = [os.path.join(os.path.dirname(scriptsdir), 'run-tests.py'), '-L']
if args.testmodules:
cmd += ["-f"]
cmd += args.testmodules
lst = subprocess.Popen(cmd, stdout=subprocess.PIPE)
for l in lst.stdout.readlines():
name = l.decode().split(' ')[0]
tests.append(name)
if len(tests) == 0:
sys.exit("No test cases selected")
if args.shuffle:
from random import shuffle
shuffle(tests)
elif num_servers > 2 and len(tests) > 100:
# Move test cases with long duration to the beginning as an
# optimization to avoid last part of the test execution running a long
# duration test case on a single VM while all other VMs have already
# completed their work.
for l in long_tests:
if l in tests:
tests.remove(l)
tests.insert(0, l)
if args.short:
tests = [t for t in tests if t not in long_tests]
logger.setLevel(debug_level)
log_handler = logging.FileHandler('parallel-vm.log')
log_handler.setLevel(debug_level)
fmt = "%(asctime)s %(levelname)s %(message)s"
log_formatter = logging.Formatter(fmt)
log_handler.setFormatter(log_formatter)
logger.addHandler(log_handler)
vm = {}
for i in range(0, num_servers):
print("\rStarting virtual machine {}/{}".format(i + 1, num_servers),
end='')
logger.info("Starting virtual machine {}/{}".format(i + 1, num_servers))
cmd = [os.path.join(scriptsdir, 'vm-run.sh'), '--delay', str(i),
'--timestamp', str(timestamp),
'--ext', 'srv.%d' % (i + 1),
'-i'] + codecov_args + extra_args
if args.telnet:
cmd += ['--telnet', str(args.telnet + i)]
vm[i] = {}
vm[i]['proc'] = subprocess.Popen(cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
vm[i]['out'] = ""
vm[i]['pending'] = ""
vm[i]['err'] = ""
vm[i]['failed'] = []
vm[i]['fail_seq'] = []
for stream in [vm[i]['proc'].stdout, vm[i]['proc'].stderr]:
fd = stream.fileno()
fl = fcntl.fcntl(fd, fcntl.F_GETFL)
fcntl.fcntl(fd, fcntl.F_SETFL, fl | os.O_NONBLOCK)
print('')
curses.wrapper(show_progress)
with open('{}/{}-parallel.log'.format(dir, timestamp), 'w') as f:
for i in range(0, num_servers):
f.write('VM {}\n{}\n{}\n'.format(i + 1, vm[i]['out'], vm[i]['err']))
first = True
for i in range(0, num_servers):
for line in vm[i]['out'].splitlines():
if line.startswith("FAIL "):
if first:
first = False
print("Logs for failed test cases:")
f.write("Logs for failed test cases:\n")
fname = "%s/%d.srv.%d/%s.log" % (dir, timestamp, i + 1,
line.split(' ')[1])
print(fname)
f.write("%s\n" % fname)
failed = get_failed(vm)
if first_run_failures:
print("To re-run same failure sequence(s):")
for i in range(0, num_servers):
if len(vm[i]['failed']) == 0:
continue
print("./vm-run.sh", end=' ')
if args.long:
print("--long", end=' ')
skip = len(vm[i]['fail_seq'])
skip -= min(skip, 30)
for t in vm[i]['fail_seq']:
if skip > 0:
skip -= 1
continue
print(t, end=' ')
print('')
print("Failed test cases:")
for f in first_run_failures:
print(f, end=' ')
logger.info("Failed: " + f)
print('')
double_failed = []
for name in failed:
double_failed.append(name)
for test in first_run_failures:
double_failed.remove(test)
if not rerun_failures:
pass
elif failed and not double_failed:
print("All failed cases passed on retry")
logger.info("All failed cases passed on retry")
elif double_failed:
print("Failed even on retry:")
for f in double_failed:
print(f, end=' ')
logger.info("Failed on retry: " + f)
print('')
res = "TOTAL={} PASS={} FAIL={} SKIP={}".format(total_started,
total_passed,
total_failed,
total_skipped)
print(res)
logger.info(res)
print("Logs: " + dir + '/' + str(timestamp))
logger.info("Logs: " + dir + '/' + str(timestamp))
for i in range(num_servers):
if len(vm[i]['pending']) > 0:
logger.info("Unprocessed stdout from VM[%d]: '%s'" %
(i, vm[i]['pending']))
log = '{}/{}.srv.{}/console'.format(dir, timestamp, i + 1)
with open(log, 'r') as f:
if "Kernel panic" in f.read():
print("Kernel panic in " + log)
logger.info("Kernel panic in " + log)
if codecov:
print("Code coverage - preparing report")
for i in range(num_servers):
subprocess.check_call([os.path.join(scriptsdir,
'process-codecov.sh'),
logdir + ".srv.%d" % (i + 1),
str(i)])
subprocess.check_call([os.path.join(scriptsdir, 'combine-codecov.sh'),
logdir])
print("file://%s/index.html" % logdir)
logger.info("Code coverage report: file://%s/index.html" % logdir)
if double_failed or (failed and not rerun_failures):
logger.info("Test run complete - failures found")
sys.exit(2)
if failed:
logger.info("Test run complete - failures found on first run; passed on retry")
sys.exit(1)
logger.info("Test run complete - no failures")
sys.exit(0)
if __name__ == "__main__":
main()
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