def _check_sloppy_fork(self, name, value):
if self._pid == os.getpid():
return
yatest_logger.error("Skip tracing to avoid data corruption, name = %s, value = %s", name, value)
try:
# Lock wreckage tracefile to avoid race if multiple tests use fork sloppily
if filelock:
lock = filelock.FileLock(self._wreckage_filename + '.lock')
lock.acquire()
with open(self._wreckage_filename, 'a') as afile:
self._file = afile
parts = [
"It looks like you have leaked process - it could corrupt internal test machinery files.",
"Usually it happens when you casually use fork() without os._exit(),",
"which results in two pytest processes running at the same time.",
"Pid of the original pytest's process is {}, however current process has {} pid.".format(self._pid, os.getpid()),
]
if self._current_test[1]:
parts.append("Most likely the problem is in '{}' test.".format(self._current_test))
else:
parts.append("Most likely new process was created before any test was launched (during the import stage?).")
if value.get('comment'):
comment = value.get('comment', '').strip()
# multiline comment
newline_required = '\n' if '\n' in comment else ''
parts.append("Debug info: name = '{}' comment:{}{}".format(name, newline_required, comment))
else:
val_str = json.dumps(value, ensure_ascii=False).encode('utf-8')
parts.append("Debug info: name = '{}' value = '{}'".format(name, base64.b64encode(val_str)))
msg = "[[bad]]{}".format('\n'.join(parts))
class_name, subtest_name = self._current_test
if subtest_name:
data = {
'class': class_name,
'subtest': subtest_name,
'status': 'fail',
'comment': msg,
}
# overwrite original status
self._dump_trace('subtest-finished', data)
else:
self._dump_trace('suite_event', {"errors": [('fail', msg)]})
except Exception as e:
yatest_logger.exception(e)
finally:
os._exit(38)
def _check_intricate_respawn(self):
pid_file = self._filename + '.pid'
try:
# python2 doesn't support open(f, 'x')
afile = os.fdopen(
os.open(pid_file, os.O_WRONLY | os.O_EXCL | os.O_CREAT), 'w')
afile.write(str(self._pid))
afile.close()
return
except OSError as e:
if e.errno != errno.EEXIST:
raise
# Looks like the test binary was respawned
if from_ya_test():
try:
with open(pid_file) as afile:
prev_pid = afile.read()
except Exception as e:
prev_pid = '(failed to obtain previous pid: {})'.format(e)
parts = [
"Aborting test run: test machinery found that the test binary {} has already been run before."
.format(sys.executable),
"Looks like test has incorrect respawn/relaunch logic within test binary.",
"Test should not try to restart itself - this is a poorly designed test case that leads to errors and could corrupt internal test machinery files.",
"Debug info: previous pid:{} current:{}".format(
prev_pid, self._pid),
]
msg = '\n'.join(parts)
yatest_logger.error(msg)
if filelock:
lock = filelock.FileLock(self._wreckage_filename + '.lock')
lock.acquire()
with open(self._wreckage_filename, 'a') as afile:
self._file = afile
self._dump_trace('suite_event',
{"errors": [('fail', '[[bad]]' + msg)]})
raise Exception(msg)
else:
# Test binary is launched without `ya make -t`'s testing machinery - don't rely on clean environment
pass
