minor fixes, rework consumer request, update requirements.txt

freqtrade/rpc/rpc.py

@@ -19,8 +19,8 @@ from freqtrade.configuration.timerange import TimeRange
 from freqtrade.constants import CANCEL_REASON, DATETIME_PRINT_FORMAT
 from freqtrade.data.history import load_data
 from freqtrade.data.metrics import calculate_max_drawdown
-from freqtrade.enums import (CandleType, ExitCheckTuple, ExitType, SignalDirection, State,
-                             TradingMode)
+from freqtrade.enums import (CandleType, ExitCheckTuple, ExitType, RPCMessageType, RPCRequestType,
+                             SignalDirection, State, TradingMode)
 from freqtrade.exceptions import ExchangeError, PricingError
 from freqtrade.exchange import timeframe_to_minutes, timeframe_to_msecs
 from freqtrade.loggers import bufferHandler
@@ -1089,6 +1089,16 @@ class RPC:
             'last_process_loc': last_p.astimezone(tzlocal()).strftime(DATETIME_PRINT_FORMAT),
             'last_process_ts': int(last_p.timestamp()),
         }
+
+    # We are passed a Channel object, we can only do sync functions on that channel object
+    def _process_consumer_request(self, request, channel):
+        # Should we ensure that request is Dict[str, Any]?
+        type, data = request.get('type'), request.get('data')
+
+        if type == RPCRequestType.SUBSCRIBE:
+            if all([any(x.value == topic for x in RPCMessageType) for topic in data]):
+                logger.debug(f"{channel} subscribed to topics: {data}")
+                channel.set_subscriptions(data)
     #
     # # ------------------------------ EXTERNAL SIGNALS -----------------------
     #