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Make watchlist app retrieve quotes from the broker daemon

kivy_mainline_and_py3.8
Tyler Goodlet 2018-04-16 02:16:26 -04:00
parent 73ef95f42a
commit 4898459bcd
1 changed files with 65 additions and 67 deletions
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132
piker/ui/watchlist.py
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@ -7,7 +7,6 @@ Launch with ``piker watch <watchlist name>``.
""" """
from itertools import chain from itertools import chain
from types import ModuleType from types import ModuleType
from functools import partial
import trio import trio
from kivy.uix.boxlayout import BoxLayout from kivy.uix.boxlayout import BoxLayout
@ -21,7 +20,6 @@ from kivy.core.window import Window
from ..log import get_logger from ..log import get_logger
from .pager import PagerView from .pager import PagerView
from ..brokers.core import poll_tickers
log = get_logger('watchlist') log = get_logger('watchlist')
@ -49,7 +47,7 @@ _kv = (f'''
#:kivy 1.10.0 #:kivy 1.10.0
<Cell> <Cell>
font_size: 18 font_size: 20
# text_size: self.size # text_size: self.size
size: self.texture_size size: self.texture_size
color: {colorcode('gray')} color: {colorcode('gray')}
@ -386,77 +384,77 @@ async def _async_main(name, tickers, brokermod, rate):
This is started with cli command `piker watch`. 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 brokermod.get_client() as client:
async with trio.open_nursery() as nursery: # get long term data including last days close price
# get long term data including last days close price sd = await client.symbol_data(tickers)
sd = await client.symbol_data(tickers)
nursery.start_soon( async with trio.open_nursery() as nursery:
partial(poll_tickers, client, brokermod.quoter, tickers, queue, # get first quotes response
rate=rate) quotes = await queue.get()
) first_quotes = [
brokermod.format_quote(quote, symbol_data=sd)[0]
for quote in quotes.values()]
# get first quotes response if first_quotes[0].get('last') is None:
quotes = await queue.get() log.error("Broker API is down temporarily")
first_quotes = [ nursery.cancel_scope.cancel()
brokermod.format_quote(quote, symbol_data=sd)[0] return
for quote in quotes.values()]
if first_quotes[0].get('last') is None: # build out UI
log.error("Broker API is down temporarily") Window.set_title(f"watchlist: {name}\t(press ? for help)")
nursery.cancel_scope.cancel() Builder.load_string(_kv)
return box = BoxLayout(orientation='vertical', padding=5, spacing=5)
# build out UI # define bid-ask "stacked" cells
Window.set_title(f"watchlist: {name}\t(press ? for help)") # (TODO: needs some rethinking and renaming for sure)
Builder.load_string(_kv) bidasks = brokermod._bidasks
box = BoxLayout(orientation='vertical', padding=5, spacing=5)
# define bid-ask "stacked" cells # add header row
# (TODO: needs some rethinking and renaming for sure) headers = first_quotes[0].keys()
bidasks = brokermod._bidasks header = Row(
{key: key for key in headers},
headers=headers,
bidasks=bidasks,
is_header_row=True,
size_hint=(1, None),
)
box.add_widget(header)
# add header row # build grid
headers = first_quotes[0].keys() grid = TickerTable(
header = Row( cols=1,
{key: key for key in headers}, size_hint=(1, None),
headers=headers, )
bidasks=bidasks, for ticker_record in first_quotes:
is_header_row=True, grid.append_row(ticker_record, bidasks=bidasks)
size_hint=(1, None), # associate the col headers row with the ticker table even though
) # they're technically wrapped separately in containing BoxLayout
box.add_widget(header) header.table = grid
# build grid # mark the initial sorted column header as bold and underlined
grid = TickerTable( sort_cell = header.get_cell(grid.sort_key)
cols=1, sort_cell.bold = sort_cell.underline = True
size_hint=(1, None), grid.last_clicked_col_cell = sort_cell
)
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
# mark the initial sorted column header as bold and underlined # set up a pager view for large ticker lists
sort_cell = header.get_cell(grid.sort_key) grid.bind(minimum_height=grid.setter('height'))
sort_cell.bold = sort_cell.underline = True pager = PagerView(box, grid, nursery)
grid.last_clicked_col_cell = sort_cell box.add_widget(pager)
# set up a pager view for large ticker lists widgets = {
grid.bind(minimum_height=grid.setter('height')) # 'anchor': anchor,
pager = PagerView(box, grid, nursery) 'root': box,
box.add_widget(pager) 'grid': grid,
'box': box,
widgets = { 'header': header,
# 'anchor': anchor, 'pager': pager,
'root': box, }
'grid': grid, nursery.start_soon(run_kivy, widgets['root'], nursery)
'box': box, nursery.start_soon(
'header': header, update_quotes, brokermod, widgets, queue, sd, quotes)
'pager': pager,
}
nursery.start_soon(run_kivy, widgets['root'], nursery)
nursery.start_soon(
update_quotes, brokermod, widgets, queue, sd, quotes)