ib: Allow history backfilling even when markets are closed

piker/brokers/ib.py

@@ -507,6 +507,7 @@ class Client:
     async def get_quote(
         self,
         symbol: str,
+
     ) -> tuple[Contract, Ticker, ContractDetails]:
         '''
         Return a single quote for symbol.
@@ -515,10 +516,14 @@ class Client:
         contract, ticker, details = await self.get_sym_details(symbol)
 
         # ensure a last price gets filled in before we deliver quote
-        for _ in range(25):
+        for _ in range(2):
             if isnan(ticker.last):
+                log.warning(f'Quote for {symbol} timed out: market is closed?')
                 ticker = await ticker.updateEvent
-                await asyncio.sleep(0.2)
+                await asyncio.sleep(0.1)
+            else:
+                log.info(f'Got first quote for {symbol}')
+                break
         else:
             log.warning(
                 f'Symbol {symbol} is not returning a quote '
@@ -1311,7 +1316,8 @@ async def _setup_quote_stream(
                 # Manually do the dereg ourselves.
                 teardown()
             except trio.WouldBlock:
-                log.warning(f'channel is blocking symbol feed for {symbol}?'
+                log.warning(
+                    f'channel is blocking symbol feed for {symbol}?'
                     f'\n{to_trio.statistics}'
                 )
 
@@ -1372,12 +1378,13 @@ async def stream_quotes(
     task_status: TaskStatus[tuple[dict, dict]] = trio.TASK_STATUS_IGNORED,
 
 ) -> None:
-    """Stream symbol quotes.
+    '''
+    Stream symbol quotes.
 
     This is a ``trio`` callable routine meant to be invoked
     once the brokerd is up.
-    """
 
+    '''
     # TODO: support multiple subscriptions
     sym = symbols[0]
 
@@ -1418,8 +1425,6 @@ async def stream_quotes(
         return init_msgs
 
     if cs.cancelled_caught:
-        # it might be outside regular trading hours so see if we can at
-        # least grab history.
 
         contract, first_ticker, details = await _trio_run_client_method(
             method='get_sym_details',
@@ -1435,15 +1440,9 @@ async def stream_quotes(
             symbol=sym,
         )
 
-    else:
+    # else:
     init_msgs = mk_init_msgs()
 
-
-    # stream = await start_aio_quote_stream(symbol=sym, contract=contract)
-    async with open_aio_quote_stream(
-        symbol=sym, contract=contract
-    ) as stream:
-
     con = first_ticker.contract
 
     # should be real volume for this contract by default
@@ -1471,6 +1470,30 @@ async def stream_quotes(
     # pass first quote asap
     first_quote = {topic: quote}
 
+    if isnan(first_ticker.last):
+        # it might be outside regular trading hours so see if we can at
+        # least grab history.
+        # quote = normalize(first_ticker, calc_price=calc_price)
+        # con = quote['contract']
+        # topic = '.'.join((con['symbol'], suffix)).lower()
+        # quote['symbol'] = topic
+
+        # # pass first quote asap
+        # first_quote = {topic: quote}
+        task_status.started((init_msgs,  first_quote))
+
+        # it's not really live but this will unblock
+        # the brokerd feed task to tell the ui to update?
+        feed_is_live.set()
+
+        # block and let data history backfill code run.
+        await trio.sleep_forever()
+        return  # we never expect feed to come up?
+
+    async with open_aio_quote_stream(
+        symbol=sym, contract=contract
+    ) as stream:
+
         # ugh, clear ticks since we've consumed them
         # (ahem, ib_insync is stateful trash)
         first_ticker.ticks = []