def get(self):
logging.info('started; imp.lock_held:%s', imp.lock_held())
# flush to prove the code started running
logservice.flush()
with _LOCK:
# run a thread which will hold the import lock until we release _LOCK
thread = threading.Thread(target=hold_import_lock)
thread.start()
# wait for the thread to be blocked
logging.info('waiting for import lock to be held by thread ...')
is_set = _WAITING_FOR_LOCK.wait(30)
if not is_set:
raise Exception(
'_WAITING_FOR_LOCK not set: the module was already imported; this only works on the first call'
)
logging.info('done; imp.lock_held:%s', imp.lock_held())
# flush logs: will hang forever due to the call to group.lengthString(...)
logservice.flush()
logging.info('lock released')
thread.join()
logging.info('all done')
self.response.write('OK!')
_WAITING_FOR_LOCK.clear()
def flush(self): logservice.flush()
def get(self):
"""Ensure that the log service works."""
logservice.write('Hi')
logservice.flush()
def flush(self):
logservice.flush()
