update analyzed df request to allow specifying a single pair

freqtrade/rpc/api_server/api_ws.py

@@ -91,9 +91,10 @@ async def _process_consumer_request(
     elif type == RPCRequestType.ANALYZED_DF:
         # Limit the amount of candles per dataframe to 'limit' or 1500
         limit = min(data.get('limit', 1500), 1500) if data else None
+        pair = data.get('pair', None) if data else None
 
         # For every pair in the generator, send a separate message
-        for message in rpc._ws_request_analyzed_df(limit):
+        for message in rpc._ws_request_analyzed_df(limit, pair):
             # Format response
             response = WSAnalyzedDFMessage(data=message)
             await channel.send(response.dict(exclude_none=True))

freqtrade/rpc/rpc.py

@@ -1109,8 +1109,8 @@ class RPC:
 
     def _ws_request_analyzed_df(
         self,
-        pair: Optional[str],
         limit: Optional[int] = None,
+        pair: Optional[str] = None
     ):
         """ Historical Analyzed Dataframes for WebSocket """
         pairlist = [pair] if pair else self._freqtrade.active_pair_whitelist