From 412313975084718e5618a009dd19cfab55d8b9f1 Mon Sep 17 00:00:00 2001 From: Tyler Goodlet Date: Thu, 19 Apr 2018 00:27:04 -0400 Subject: [PATCH] Use `Client` in watchlist app --- piker/ui/watchlist.py | 135 ++++++++++++++++++++++-------------------- 1 file changed, 70 insertions(+), 65 deletions(-) diff --git a/piker/ui/watchlist.py b/piker/ui/watchlist.py index 7ce726f1..69e6e350 100644 --- a/piker/ui/watchlist.py +++ b/piker/ui/watchlist.py @@ -319,7 +319,7 @@ async def update_quotes( nursery: 'Nursery', brokermod: ModuleType, widgets: dict, - queue: 'StreamQueue', + client: 'Client', symbol_data: dict, first_quotes: dict ): @@ -359,7 +359,7 @@ async def update_quotes( grid.render_rows(cache) # core cell update loop - async for quotes in queue: # new quotes data only + async for quotes in client.aiter_recv(): # new quotes data only for symbol, quote in quotes.items(): record, displayable = brokermod.format_quote( quote, symbol_data=symbol_data) @@ -374,6 +374,7 @@ async def update_quotes( log.warn("Server connection dropped") nursery.cancel_scope.cancel() + async def run_kivy(root, nursery): '''Trio-kivy entry point. ''' @@ -387,76 +388,80 @@ async def _async_main(name, tickers, brokermod, rate): This is started with cli command `piker watch`. ''' # setup ticker stream - from ..brokers.core import StreamQueue - queue = StreamQueue(await trio.open_tcp_stream('127.0.0.1', 1616)) - await queue.put((brokermod.name, tickers)) # initial request for symbols price streams + from ..brokers.core import Client - # get initial symbol data - async with brokermod.get_client() as client: - # get long term data including last days close price - sd = await client.symbol_data(tickers) + async def subscribe(client): + # initial request for symbols price streams + await client.send((brokermod.name, tickers)) - async with trio.open_nursery() as nursery: - # get first quotes response - quotes = await queue.get() - first_quotes = [ - brokermod.format_quote(quote, symbol_data=sd)[0] - for quote in quotes.values()] + async with Client(('127.0.0.1', 1616), subscribe) as client: - if first_quotes[0].get('last') is None: - log.error("Broker API is down temporarily") - nursery.cancel_scope.cancel() - return + # get initial symbol data + async with brokermod.get_client() as bclient: + # get long term data including last days close price + sd = await bclient.symbol_data(tickers) - # build out UI - Window.set_title(f"watchlist: {name}\t(press ? for help)") - Builder.load_string(_kv) - box = BoxLayout(orientation='vertical', padding=5, spacing=5) + async with trio.open_nursery() as nursery: + # get first quotes response + quotes = await client.recv() + first_quotes = [ + brokermod.format_quote(quote, symbol_data=sd)[0] + for quote in quotes.values()] - # define bid-ask "stacked" cells - # (TODO: needs some rethinking and renaming for sure) - bidasks = brokermod._bidasks + if first_quotes[0].get('last') is None: + log.error("Broker API is down temporarily") + nursery.cancel_scope.cancel() + return - # add header row - headers = first_quotes[0].keys() - header = Row( - {key: key for key in headers}, - headers=headers, - bidasks=bidasks, - is_header_row=True, - size_hint=(1, None), - ) - box.add_widget(header) + # build out UI + Window.set_title(f"watchlist: {name}\t(press ? for help)") + Builder.load_string(_kv) + box = BoxLayout(orientation='vertical', padding=5, spacing=5) - # build grid - grid = TickerTable( - cols=1, - size_hint=(1, None), - ) - for ticker_record in first_quotes: - grid.append_row(ticker_record, bidasks=bidasks) - # associate the col headers row with the ticker table even though - # they're technically wrapped separately in containing BoxLayout - header.table = grid + # define bid-ask "stacked" cells + # (TODO: needs some rethinking and renaming for sure) + bidasks = brokermod._bidasks - # mark the initial sorted column header as bold and underlined - sort_cell = header.get_cell(grid.sort_key) - sort_cell.bold = sort_cell.underline = True - grid.last_clicked_col_cell = sort_cell + # add header row + headers = first_quotes[0].keys() + header = Row( + {key: key for key in headers}, + headers=headers, + bidasks=bidasks, + is_header_row=True, + size_hint=(1, None), + ) + box.add_widget(header) - # set up a pager view for large ticker lists - grid.bind(minimum_height=grid.setter('height')) - pager = PagerView(box, grid, nursery) - box.add_widget(pager) + # build grid + grid = TickerTable( + cols=1, + size_hint=(1, None), + ) + for ticker_record in first_quotes: + grid.append_row(ticker_record, bidasks=bidasks) + # associate the col headers row with the ticker table even though + # they're technically wrapped separately in containing BoxLayout + header.table = grid - widgets = { - # 'anchor': anchor, - 'root': box, - 'grid': grid, - 'box': box, - 'header': header, - 'pager': pager, - } - nursery.start_soon(run_kivy, widgets['root'], nursery) - nursery.start_soon( - update_quotes, nursery, brokermod, widgets, queue, sd, quotes) + # mark the initial sorted column header as bold and underlined + sort_cell = header.get_cell(grid.sort_key) + sort_cell.bold = sort_cell.underline = True + grid.last_clicked_col_cell = sort_cell + + # set up a pager view for large ticker lists + grid.bind(minimum_height=grid.setter('height')) + pager = PagerView(box, grid, nursery) + box.add_widget(pager) + + widgets = { + # 'anchor': anchor, + 'root': box, + 'grid': grid, + 'box': box, + 'header': header, + 'pager': pager, + } + nursery.start_soon(run_kivy, widgets['root'], nursery) + nursery.start_soon( + update_quotes, nursery, brokermod, widgets, client, sd, quotes)