Pulling earnings data from bitfinex

pull_earnings_data.py

 def pull_earnings_data(self):                                                                                                                               
        """ Fetch and store interest performance data (returns) """                                                                                             
        c = self.api_client                                                                                                                                     
        since = timestamp_from_date(datetime.datetime.utcnow() - datetime.timedelta(days=30))                                                                   
        # Don't supply the wallet' param or you will only get 1 days worth of data. See                                                                         
        # https://docs.bitfinex.com/reference#rest-auth-balance-history                                                                                         
        # TODO: Upgrade to v2 API                                                                                                                               
        history = c.brequest(1, "history", authenticate=True, method="POST",                                                                                    
            data={"limit": 5000, "since": since, "currency": self.lba.currency.abbr})                                                                           
        created = 0                                                                                                                                             
        history.reverse() # Reverse the order so that we get to fill the start/end balance in correctly                                                         
        for ledger in history:                                                                                                                                  
            if ledger["currency"] != self.lba.currency.abbr:                                                                                                    
                continue                                                                                                                                        
            if ledger["description"].lower() != "margin funding payment on wallet deposit": # This is sometimes a different case                                
                continue                                                                                                                                        
                                                                                                                                                                
            timestamp = date_from_timestamp(int(float(ledger["timestamp"])))                                                                                    
                                                                                                                                                                
            # Note the timestamp supplied is for ~2am the day *after* the interest is for. Reset for reporting clarity                                          
            day = timestamp - datetime.timedelta(days=1)                                                                                                        
                                                                                                                                                                
            if not DailyEarning.objects.filter(lend_bot_account=self.lba, day = day).exists():                                                                  
                created += 1                                                                                                                                    
                DailyEarning.objects.create(                                                                                                                    
                    lend_bot_account=self.lba,                                                                                                                  
                    day = day,                                                                                                                                  
                    earning = D(ledger["amount"]),                                                                                                              
                    end_balance = D(ledger["balance"])                                                                                                          
                )                                                                                                                                               
        return created