Test reader thread hardening
The test reader thread could get stuck in case an unexpected Exception was raised during test runs in parent thread. Catch the Exception, close the thread and raise the Exception to avoid this. Change-Id: I3a9298d593c334d96d04b6207d604b684572a2ac Signed-off-by: juraj.linkes <juraj.linkes@pantheon.tech>
This commit is contained in:
juraj.linkes
@ -210,13 +210,12 @@ class TestCaseWrapper(object):
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def stdouterr_reader_wrapper(unread_testcases, finished_unread_testcases,
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read_testcases):
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read_testcase = None
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while read_testcases.is_set() or len(unread_testcases) > 0:
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if not read_testcase:
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if len(finished_unread_testcases) > 0:
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read_testcase = finished_unread_testcases.pop()
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unread_testcases.remove(read_testcase)
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elif len(unread_testcases) > 0:
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read_testcase = unread_testcases.pop()
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while read_testcases.is_set() or len(unread_testcases):
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if len(finished_unread_testcases):
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read_testcase = finished_unread_testcases.pop()
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unread_testcases.remove(read_testcase)
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elif len(unread_testcases):
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read_testcase = unread_testcases.pop()
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if read_testcase:
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data = ''
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while data is not None:
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@ -328,103 +327,112 @@ def run_forked(testcase_suites):
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failed_wrapped_testcases = set()
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stop_run = False
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while len(wrapped_testcase_suites) > 0:
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finished_testcase_suites = set()
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try:
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while len(wrapped_testcase_suites) > 0:
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finished_testcase_suites = set()
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for wrapped_testcase_suite in wrapped_testcase_suites:
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while wrapped_testcase_suite.result_parent_end.poll():
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wrapped_testcase_suite.result.process_result(
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*wrapped_testcase_suite.result_parent_end.recv())
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wrapped_testcase_suite.last_heard = time.time()
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while wrapped_testcase_suite.keep_alive_parent_end.poll():
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wrapped_testcase_suite.last_test, \
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wrapped_testcase_suite.last_test_vpp_binary, \
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wrapped_testcase_suite.last_test_temp_dir, \
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wrapped_testcase_suite.vpp_pid = \
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wrapped_testcase_suite.keep_alive_parent_end.recv()
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wrapped_testcase_suite.last_heard = time.time()
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if wrapped_testcase_suite.finished_parent_end.poll():
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wrapped_testcase_suite.finished_parent_end.recv()
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wrapped_testcase_suite.last_heard = time.time()
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stop_run = process_finished_testsuite(
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wrapped_testcase_suite,
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finished_testcase_suites,
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failed_wrapped_testcases,
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results) or stop_run
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continue
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fail = False
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if wrapped_testcase_suite.last_heard + test_timeout < \
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time.time():
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fail = True
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wrapped_testcase_suite.logger.critical(
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"Child test runner process timed out "
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"(last test running was `%s' in `%s')!" %
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(wrapped_testcase_suite.last_test,
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wrapped_testcase_suite.last_test_temp_dir))
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elif not wrapped_testcase_suite.child.is_alive():
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fail = True
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wrapped_testcase_suite.logger.critical(
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"Child test runner process unexpectedly died "
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"(last test running was `%s' in `%s')!" %
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(wrapped_testcase_suite.last_test,
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wrapped_testcase_suite.last_test_temp_dir))
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elif wrapped_testcase_suite.last_test_temp_dir and \
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wrapped_testcase_suite.last_test_vpp_binary:
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if is_core_present(
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wrapped_testcase_suite.last_test_temp_dir):
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wrapped_testcase_suite.add_testclass_with_core()
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if wrapped_testcase_suite.core_detected_at is None:
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wrapped_testcase_suite.core_detected_at = \
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time.time()
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elif wrapped_testcase_suite.core_detected_at + \
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core_timeout < time.time():
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wrapped_testcase_suite.logger.critical(
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"Child test runner process unresponsive and "
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"core-file exists in test temporary directory "
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"(last test running was `%s' in `%s')!" %
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(wrapped_testcase_suite.last_test,
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wrapped_testcase_suite.last_test_temp_dir))
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fail = True
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if fail:
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wrapped_testcase_suite.child.terminate()
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try:
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# terminating the child process tends to leave orphan
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# VPP process around
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if wrapped_testcase_suite.vpp_pid:
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os.kill(wrapped_testcase_suite.vpp_pid,
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signal.SIGTERM)
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except OSError:
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# already dead
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pass
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wrapped_testcase_suite.result.crashed = True
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wrapped_testcase_suite.result.process_result(
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wrapped_testcase_suite.last_test_id, ERROR)
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stop_run = process_finished_testsuite(
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wrapped_testcase_suite,
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finished_testcase_suites,
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failed_wrapped_testcases,
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results) or stop_run
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for finished_testcase in finished_testcase_suites:
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finished_testcase.child.join()
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finished_testcase.close_pipes()
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wrapped_testcase_suites.remove(finished_testcase)
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finished_unread_testcases.add(finished_testcase)
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finished_testcase.stdouterr_queue.put(None)
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if stop_run:
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while len(testcase_suites) > 0:
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results.append(TestResult(testcase_suites.pop(0)))
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elif len(testcase_suites) > 0:
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new_testcase = TestCaseWrapper(testcase_suites.pop(0),
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manager)
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wrapped_testcase_suites.add(new_testcase)
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unread_testcases.add(new_testcase)
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except Exception:
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for wrapped_testcase_suite in wrapped_testcase_suites:
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while wrapped_testcase_suite.result_parent_end.poll():
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wrapped_testcase_suite.result.process_result(
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*wrapped_testcase_suite.result_parent_end.recv())
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wrapped_testcase_suite.last_heard = time.time()
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wrapped_testcase_suite.child.terminate()
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wrapped_testcase_suite.stdouterr_queue.put(None)
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raise
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finally:
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read_from_testcases.clear()
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stdouterr_thread.join(test_timeout)
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manager.shutdown()
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while wrapped_testcase_suite.keep_alive_parent_end.poll():
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wrapped_testcase_suite.last_test, \
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wrapped_testcase_suite.last_test_vpp_binary, \
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wrapped_testcase_suite.last_test_temp_dir, \
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wrapped_testcase_suite.vpp_pid = \
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wrapped_testcase_suite.keep_alive_parent_end.recv()
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wrapped_testcase_suite.last_heard = time.time()
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if wrapped_testcase_suite.finished_parent_end.poll():
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wrapped_testcase_suite.finished_parent_end.recv()
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wrapped_testcase_suite.last_heard = time.time()
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stop_run = process_finished_testsuite(
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wrapped_testcase_suite,
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finished_testcase_suites,
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failed_wrapped_testcases,
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results) or stop_run
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continue
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fail = False
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if wrapped_testcase_suite.last_heard + test_timeout < time.time():
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fail = True
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wrapped_testcase_suite.logger.critical(
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"Child test runner process timed out "
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"(last test running was `%s' in `%s')!" %
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(wrapped_testcase_suite.last_test,
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wrapped_testcase_suite.last_test_temp_dir))
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elif not wrapped_testcase_suite.child.is_alive():
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fail = True
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wrapped_testcase_suite.logger.critical(
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"Child test runner process unexpectedly died "
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"(last test running was `%s' in `%s')!" %
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(wrapped_testcase_suite.last_test,
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wrapped_testcase_suite.last_test_temp_dir))
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elif wrapped_testcase_suite.last_test_temp_dir and \
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wrapped_testcase_suite.last_test_vpp_binary:
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if is_core_present(wrapped_testcase_suite.last_test_temp_dir):
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wrapped_testcase_suite.add_testclass_with_core()
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if wrapped_testcase_suite.core_detected_at is None:
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wrapped_testcase_suite.core_detected_at = time.time()
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elif wrapped_testcase_suite.core_detected_at + \
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core_timeout < time.time():
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wrapped_testcase_suite.logger.critical(
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"Child test runner process unresponsive and core-"
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"file exists in test temporary directory "
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"(last test running was `%s' in `%s')!" %
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(wrapped_testcase_suite.last_test,
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wrapped_testcase_suite.last_test_temp_dir))
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fail = True
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if fail:
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wrapped_testcase_suite.child.terminate()
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try:
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# terminating the child process tends to leave orphan
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# VPP process around
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if wrapped_testcase_suite.vpp_pid:
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os.kill(wrapped_testcase_suite.vpp_pid, signal.SIGTERM)
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except OSError:
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# already dead
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pass
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wrapped_testcase_suite.result.crashed = True
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wrapped_testcase_suite.result.process_result(
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wrapped_testcase_suite.last_test_id, ERROR)
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stop_run = process_finished_testsuite(
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wrapped_testcase_suite,
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finished_testcase_suites,
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failed_wrapped_testcases,
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results) or stop_run
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for finished_testcase in finished_testcase_suites:
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finished_testcase.child.join()
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finished_testcase.close_pipes()
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wrapped_testcase_suites.remove(finished_testcase)
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finished_unread_testcases.add(finished_testcase)
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finished_testcase.stdouterr_queue.put(None)
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if stop_run:
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while len(testcase_suites) > 0:
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results.append(TestResult(testcase_suites.pop(0)))
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elif len(testcase_suites) > 0:
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new_testcase = TestCaseWrapper(testcase_suites.pop(0), manager)
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wrapped_testcase_suites.add(new_testcase)
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unread_testcases.add(new_testcase)
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while len(unread_testcases) > 0:
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# wait for reader thread to read everything in all loggers
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pass
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read_from_testcases.clear()
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stdouterr_thread.join(test_timeout)
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manager.shutdown()
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handle_cores(failed_wrapped_testcases)
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return results
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