Make watchlist app retrieve quotes from the broker daemon

piker/ui/watchlist.py

@@ -7,7 +7,6 @@ Launch with ``piker watch <watchlist name>``.
 """
 from itertools import chain
 from types import ModuleType
-from functools import partial
 
 import trio
 from kivy.uix.boxlayout import BoxLayout
@@ -21,7 +20,6 @@ from kivy.core.window import Window
 
 from ..log import get_logger
 from .pager import PagerView
-from ..brokers.core import poll_tickers
 
 log = get_logger('watchlist')
 
@@ -49,7 +47,7 @@ _kv = (f'''
 #:kivy 1.10.0
 
 <Cell>
-    font_size: 18
+    font_size: 20
     # text_size: self.size
     size: self.texture_size
     color: {colorcode('gray')}
@@ -386,17 +384,17 @@ async def _async_main(name, tickers, brokermod, rate):
 
     This is started with cli command `piker watch`.
     '''
-    queue = trio.Queue(1000)
+    # setup ticker stream
+    from ..brokers.core import StreamQueue
+    queue = StreamQueue(await trio.open_tcp_stream('127.0.0.1', 1616))
+    await queue.put(tickers)  # initial request for symbols price streams
+
+    # get initial symbol data
     async with brokermod.get_client() as client:
-        async with trio.open_nursery() as nursery:
         # get long term data including last days close price
         sd = await client.symbol_data(tickers)
 
-            nursery.start_soon(
-                partial(poll_tickers, client, brokermod.quoter, tickers, queue,
-                        rate=rate)
-            )
-
+    async with trio.open_nursery() as nursery:
         # get first quotes response
         quotes = await queue.get()
         first_quotes = [