def events(request):
if request.is_ajax() and request.method == "POST":
event_handler = EventHandler()
if "latest" not in request.POST or request.POST["latest"] == "null":
latest_seq_num = event_handler.get_current_sequence_number()
else:
latest_seq_num = int(request.POST["latest"])
start_timestamp = time.time()
event_messages = {"events": [], "latest": latest_seq_num}
while start_timestamp + 20 > time.time():
cur_seq_num = event_handler.get_current_sequence_number()
if latest_seq_num < cur_seq_num:
events = event_handler.get_events(latest_seq_num, cur_seq_num)
for event in events:
event_messages["events"].append({"msg": event["description"], "date": event["date"]})
if len(event_messages["events"]) > 0:
event_messages["latest"] = cur_seq_num
break
time.sleep(3)
data = json.dumps(event_messages)
return HttpResponse(data, "application/json")
else:
return HttpResponse("Invalid request")
