def run_wf(wf_name=''):
"""
TODO:
1. make wf_name meaningful
2. refact it so as to reduce redundant code
3. how to response gracefully if error/exception occurs
4. the response should be contained the state of the workflow triggered
:http param async:
:return:
"""
is_async = request.args.get('async', False)
event, req = None, request.args
if request.method == 'POST':
event = Event.from_json(request.data)
event.save()
stat_driver.add_event(event)
async_results = reactor.dispatch_event(event=event,
wf_name=wf_name,
req=req)
else:
async_results = reactor.dispatch_req(wf_name, req, event=event)
if not is_async:
for ar in async_results:
ar.wait()
return json.dumps([ar.wf_id for ar in async_results])
def on_message(self, headers, message):
# TODO: should we validate the message format and field type here?
try:
event = Event.from_json(message)
self.stat_driver.add_event(event)
self.reactor.dispatch_event(event)
except:
self.logger.exception('failed to process message: ' + message)
else:
msg_id = headers['message-id']
self.conn.ack(msg_id, self.subscription_id)