def index():
session = Session()
return render_template('index.html', loos={
loo.identifier: {
'identifier': loo.identifier,
'label': loo.label,
'floor': loo.floor,
'in_use': loo.in_use,
} for loo in session.query(Loo)
})
class Server(object):
def __init__(self):
self.session = Session()
self.redis = redis.StrictRedis()
self.loos = self.session.query(Loo).all()
self.running = True
def run(self):
logger.info("Starting server")
while self.running:
self.tick()
sleep(1)
def stop(self):
self.running = False
logger.info("Stopping server")
def tick(self):
# polling RF
for loo in self.loos:
in_use = poll_loo(loo.identifier)
logging.info("Status of {}: {}".format(loo.label, in_use))
if in_use != loo.in_use:
self.update_status(loo, in_use)
def update_status(self, loo, in_use):
session = self.session
loo.in_use = in_use
now = datetime.now()
previous_event = (
session.query(Event)
.filter(Event.loo == loo)
.order_by(desc(Event.timestamp))
).first()
if previous_event is not None:
diff = (now - previous_event.timestamp).total_seconds()
previous_event.seconds_in_state = diff
event = Event(timestamp=now, loo=loo, in_use=in_use)
session.add(event)
session.commit()
self.redis.publish(settings.EVENTS_CHANNEL, json.dumps({
'loo': loo.identifier,
'in_use': in_use,
}))
def index():
session = Session()
return render_template("index.html", loos={loo.identifier: loo.as_dict() for loo in session.query(Loo)})