def api_callback(self,callback,args = None,post_data = None):
#currently, we allow api to be called crossdomain
web.header('Access-Control-Allow-Origin','*')
web.header('Content-Type','application/json; charset=utf-8')
answer = { 'error' : None }
try:
time_begin = time()
answer['is_server_present'] = State.is_server_present()
if self.need_server and not answer['is_server_present']:
raise NoServerError('This operation requires vestibule server present')
context,request = parse_post_data(post_data, self.readers, args)
request['answer'] = answer
context.apply(callback, args = (self,), kwds = request)
if hasattr(context,'exc_info'):
answer['error'] = format_exception(*context.exc_info)
except Exception as e:
answer['error'] = format_exception(*exc_info())
finally:
answer['time_elapsed'] = time() - time_begin
return answer
def POST(self,reader = None,answer={},**kw):
if reader != None:
try:
answer['sn'] = reader.sn()
except ReaderError:
answer['sn'] = None
answer['version'] = reader.version()
else:
answer['version'] = __version__
answer['stoplist'] = State.get_stoplist_version()