How to get data stream notifier from inside indicator

jwsmith

Hi there,
Thanks for the great platform!
A fairly straightforward question:

How do I get the data status (CONNECTED,DELAYED,LIVE etc.) inside my Indicator?

Inside a strategy I can use

def notify_data(self, data, status, *args, **kwargs):
        logger.info(self.asset_name+" DATA STREAM NOTIFIER = {}".format(data._getstatusname(status)))
        if status == data.LIVE:
            self.counttostop = self.p.stopafter
            self.datastatus = 1

But I'm not sure how I can translate this to inside the indicator.

Thanks!
Josh

backtrader

Indicators do not receive notifications. They are meant to be calculators.

But nothing prevents you from passing any information to an indicator, via a member attribute or invoking a user defined method.

jwsmith

Thanks for the response, and good to know.

I managed to solve my issue by doing

        try:
            status = (self.datas[0]._getstatusname(self.datas[0]._laststatus))
        except AttributeError:
            # Means we backtesting
            status = None

within the next of my indicator.

Cheers,
Josh

backtrader

Although that code seems sane, it doesn't make any sense when the data feed for the indicator is not a data feed which provides notifications.

A classical example is an SMA of another SMA. It would therefore seems more logical and reasonable to pass the information using a method.

But each master ... has his own way

jwsmith

Aha, yes I see your point. Well, for now this will work :)
Thanks for pointing it out!
Josh