479 lines
14 KiB
Python
479 lines
14 KiB
Python
"""
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monitor: a real-time, sorted watchlist.
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Launch with ``piker monitor <watchlist name>``.
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(Currently there's a bunch of questrade specific stuff in here)
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"""
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from itertools import chain
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from types import ModuleType, AsyncGeneratorType
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import trio
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from kivy.uix.boxlayout import BoxLayout
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from kivy.uix.gridlayout import GridLayout
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from kivy.uix.stacklayout import StackLayout
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from kivy.uix.button import Button
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from kivy.lang import Builder
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from kivy import utils
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from kivy.app import async_runTouchApp
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from kivy.core.window import Window
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from ..log import get_logger
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from .pager import PagerView
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log = get_logger('monitor')
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_colors2hexs = {
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'darkgray': 'a9a9a9',
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'gray': '808080',
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'green': '008000',
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'forestgreen': '228b22',
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'red2': 'ff3333',
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'red': 'ff0000',
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'firebrick': 'b22222',
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}
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_colors = {key: utils.rgba(val) for key, val in _colors2hexs.items()}
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def colorcode(name):
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return _colors[name if name else 'gray']
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_bs = 4 # border size
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_color = [0.13]*3 # nice shade of gray
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_kv = (f'''
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#:kivy 1.10.0
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<Cell>
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font_size: 20
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# text_size: self.size
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size: self.texture_size
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color: {colorcode('gray')}
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font_color: {colorcode('gray')}
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font_name: 'Roboto-Regular'
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background_color: [0.13]*3 + [1]
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background_normal: ''
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valign: 'middle'
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halign: 'center'
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# outline_color: [0.1]*4
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<HeaderCell>
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font_size: 20
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background_color: [0]*4
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canvas.before:
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Color:
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rgb: {_color}
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BorderImage: # use a fixed size border
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pos: self.pos
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size: [self.size[0] - {_bs}, self.size[1]]
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# 0s are because the containing TickerTable already has spacing
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border: [0, {_bs} , 0, {_bs}]
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<TickerTable>
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spacing: '{_bs}dp'
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row_force_default: True
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row_default_height: 63
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cols: 1
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<BidAskLayout>
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spacing: [{_bs}, 0]
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<Row>
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# minimum_height: 200 # should be pulled from Cell text size
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# minimum_width: 200
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# row_force_default: True
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# row_default_height: 75
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# outline_color: [.7]*4
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<SearchBar>
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# part of the `PagerView`
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size_hint: 1, 0.03
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font_size: 25
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background_color: [0.13]*3 + [1]
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''')
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class HeaderCell(Button):
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"""Column header cell label.
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"""
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def on_press(self, value=None):
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"""Clicking on a col header indicates to sort rows by this column
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in `update_quotes()`.
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"""
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table = self.row.table
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if self.row.is_header:
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table.sort_key = self.key
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last = table.last_clicked_col_cell
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if last and last is not self:
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last.underline = False
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last.bold = False
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# outline the header text to indicate it's been the last clicked
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self.underline = True
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self.bold = True
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# mark this cell as the last
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table.last_clicked_col_cell = self
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# sort and render the rows immediately
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self.row.table.render_rows(table.quote_cache)
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# allow highlighting of row headers for tracking
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elif self.is_header:
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if self.background_color == self.color:
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self.background_color = [0]*4
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else:
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self.background_color = self.color
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class Cell(Button):
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"""Data cell.
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"""
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class BidAskLayout(StackLayout):
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"""Cell which houses three buttons containing a last, bid, and ask in a
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single unit oriented with the last 2 under the first.
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"""
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def __init__(self, values, header=False, **kwargs):
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super(BidAskLayout, self).__init__(orientation='lr-tb', **kwargs)
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assert len(values) == 3, "You can only provide 3 values: last,bid,ask"
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self._keys2cells = {}
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cell_type = HeaderCell if header else Cell
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top_size = cell_type().font_size
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small_size = top_size - 2
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top_prop = 0.55 # proportion of size used by top cell
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bottom_prop = 1 - top_prop
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for (key, size_hint, font_size), value in zip(
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[('last', (1, top_prop), top_size),
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('bid', (0.5, bottom_prop), small_size),
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('ask', (0.5, bottom_prop), small_size)],
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values
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):
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cell = cell_type(
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text=str(value),
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size_hint=size_hint,
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width=self.width/2 - 3,
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font_size=font_size
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)
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self._keys2cells[key] = cell
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cell.key = value
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cell.is_header = header
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setattr(self, key, cell)
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self.add_widget(cell)
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# should be assigned by referrer
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self.row = None
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def get_cell(self, key):
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return self._keys2cells[key]
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@property
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def row(self):
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return self.row
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@row.setter
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def row(self, row):
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# so hideous
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for cell in self.cells:
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cell.row = row
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@property
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def cells(self):
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return [self.last, self.bid, self.ask]
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class Row(GridLayout):
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"""A grid for displaying a row of ticker quote data.
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The row fields can be updated using the ``fields`` property which will in
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turn adjust the text color of the values based on content changes.
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"""
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def __init__(
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self, record, headers=(), bidasks=None, table=None,
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is_header_row=False,
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**kwargs
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):
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super(Row, self).__init__(cols=len(record), **kwargs)
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self._cell_widgets = {}
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self._last_record = record
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self.table = table
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self.is_header = is_header_row
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# create `BidAskCells` first
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layouts = {}
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bidasks = bidasks or {}
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ba_cells = {}
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for key, children in bidasks.items():
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layout = BidAskLayout(
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[record[key]] + [record[child] for child in children],
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header=is_header_row
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)
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layout.row = self
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layouts[key] = layout
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for i, child in enumerate([key] + children):
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ba_cells[child] = layout.cells[i]
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children_flat = list(chain.from_iterable(bidasks.values()))
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self._cell_widgets.update(ba_cells)
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# build out row using Cell labels
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for (key, val) in record.items():
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header = key in headers
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# handle bidask cells
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if key in layouts:
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self.add_widget(layouts[key])
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elif key in children_flat:
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# these cells have already been added to the `BidAskLayout`
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continue
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else:
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cell = self._append_cell(val, header=header)
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cell.key = key
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self._cell_widgets[key] = cell
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def get_cell(self, key):
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return self._cell_widgets[key]
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def _append_cell(self, text, header=False):
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if not len(self._cell_widgets) < self.cols:
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raise ValueError(f"Can not append more then {self.cols} cells")
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# header cells just have a different colour
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celltype = HeaderCell if header else Cell
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cell = celltype(text=str(text))
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cell.is_header = header
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cell.row = self
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self.add_widget(cell)
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return cell
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def update(self, record, displayable):
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# color changed field values
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for key, val in record.items():
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# logic for cell text coloring: up-green, down-red
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if self._last_record[key] < val:
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color = colorcode('forestgreen')
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elif self._last_record[key] > val:
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color = colorcode('red2')
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else:
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color = colorcode('gray')
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cell = self.get_cell(key)
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cell.text = str(displayable[key])
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cell.color = color
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self._last_record = record
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class TickerTable(GridLayout):
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"""A grid for displaying ticker quote records as a table.
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"""
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def __init__(self, sort_key='%', quote_cache={}, **kwargs):
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super(TickerTable, self).__init__(**kwargs)
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self.symbols2rows = {}
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self.sort_key = sort_key
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self.quote_cache = quote_cache
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self.row_filter = lambda item: item
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# for tracking last clicked column header cell
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self.last_clicked_col_cell = None
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def append_row(self, record, bidasks=None):
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"""Append a `Row` of `Cell` objects to this table.
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"""
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row = Row(record, headers=('symbol',), bidasks=bidasks, table=self)
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# store ref to each row
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self.symbols2rows[row._last_record['symbol']] = row
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self.add_widget(row)
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return row
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def render_rows(
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self, pairs: {str: (dict, Row)}, sort_key: str = None, row_filter=None,
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):
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"""Sort and render all rows on the ticker grid from ``pairs``.
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"""
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self.clear_widgets()
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sort_key = sort_key or self.sort_key
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for data, row in filter(
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row_filter or self.row_filter,
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reversed(
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sorted(pairs.values(), key=lambda item: item[0][sort_key])
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)
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):
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self.add_widget(row) # row append
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def ticker_search(self, patt):
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"""Return sequence of matches when pattern ``patt`` is in a
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symbol name. Most naive algo possible for the moment.
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"""
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for symbol, row in self.symbols2rows.items():
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if patt in symbol:
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yield symbol, row
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def search(self, patt):
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"""Search bar api compat.
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"""
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return dict(self.ticker_search(patt)) or {}
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async def update_quotes(
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nursery: 'Nursery',
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brokermod: ModuleType,
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widgets: dict,
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agen: AsyncGeneratorType,
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symbol_data: dict,
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first_quotes: dict
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):
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"""Process live quotes by updating ticker rows.
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"""
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grid = widgets['grid']
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def color_row(row, data):
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hdrcell = row.get_cell('symbol')
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chngcell = row.get_cell('%')
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daychange = float(data['%'])
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if daychange < 0.:
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color = colorcode('red2')
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elif daychange > 0.:
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color = colorcode('forestgreen')
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else:
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color = colorcode('gray')
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# row header and % cell color
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chngcell.color = hdrcell.color = color
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# bgcolor = color.copy()
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# bgcolor[-1] = 0.25
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# chngcell.background_color = bgcolor
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# if the cell has been "highlighted" make sure to change its color
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if hdrcell.background_color != [0]*4:
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hdrcell.background_color = color
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cache = {}
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grid.quote_cache = cache
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# initial coloring
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for sym, quote in first_quotes.items():
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row = grid.symbols2rows[sym]
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record, displayable = brokermod.format_quote(
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quote, symbol_data=symbol_data)
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row.update(record, displayable)
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color_row(row, record)
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cache[sym] = (record, row)
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# render all rows once up front
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grid.render_rows(cache)
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# real-time cell update loop
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async for quotes in agen: # new quotes data only
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for symbol, quote in quotes.items():
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record, displayable = brokermod.format_quote(
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quote, symbol_data=symbol_data)
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row = grid.symbols2rows[symbol]
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cache[symbol] = (record, row)
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row.update(record, displayable)
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color_row(row, record)
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grid.render_rows(cache)
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log.debug("Waiting on quotes")
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log.warn("`brokerd` connection dropped")
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nursery.cancel_scope.cancel()
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async def _async_main(name, portal, tickers, brokermod, rate):
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'''Launch kivy app + all other related tasks.
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This is started with cli cmd `piker monitor`.
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'''
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# subscribe for tickers (this performs a possible filtering
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# where invalid symbols are discarded)
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sd = await portal.run(
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"piker.brokers.core", 'symbol_data',
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broker=brokermod.name, tickers=tickers)
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# an async generator instance
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agen = await portal.run(
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"piker.brokers.core", 'start_quote_stream',
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broker=brokermod.name, tickers=tickers)
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async with trio.open_nursery() as nursery:
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# get first quotes response
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log.debug("Waiting on first quote...")
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quotes = await agen.__anext__()
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first_quotes = [
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brokermod.format_quote(quote, symbol_data=sd)[0]
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for quote in quotes.values()]
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if first_quotes[0].get('last') is None:
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log.error("Broker API is down temporarily")
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nursery.cancel_scope.cancel()
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return
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# build out UI
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Window.set_title(f"monitor: {name}\t(press ? for help)")
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Builder.load_string(_kv)
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box = BoxLayout(orientation='vertical', padding=5, spacing=5)
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# define bid-ask "stacked" cells
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# (TODO: needs some rethinking and renaming for sure)
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bidasks = brokermod._bidasks
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# add header row
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headers = first_quotes[0].keys()
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header = Row(
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{key: key for key in headers},
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headers=headers,
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bidasks=bidasks,
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is_header_row=True,
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size_hint=(1, None),
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)
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box.add_widget(header)
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# build grid
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grid = TickerTable(
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cols=1,
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size_hint=(1, None),
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)
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for ticker_record in first_quotes:
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grid.append_row(ticker_record, bidasks=bidasks)
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# associate the col headers row with the ticker table even though
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# they're technically wrapped separately in containing BoxLayout
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header.table = grid
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# mark the initial sorted column header as bold and underlined
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sort_cell = header.get_cell(grid.sort_key)
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sort_cell.bold = sort_cell.underline = True
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grid.last_clicked_col_cell = sort_cell
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# set up a pager view for large ticker lists
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grid.bind(minimum_height=grid.setter('height'))
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pager = PagerView(box, grid, nursery)
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box.add_widget(pager)
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widgets = {
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# 'anchor': anchor,
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'root': box,
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'grid': grid,
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'box': box,
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'header': header,
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'pager': pager,
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}
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nursery.start_soon(
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update_quotes, nursery, brokermod, widgets, agen, sd, quotes)
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try:
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# Trio-kivy entry point.
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await async_runTouchApp(widgets['root']) # run kivy
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await agen.aclose() # cancel aysnc gen call
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finally:
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# un-subscribe from symbols stream (cancel if brokerd
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# was already torn down - say by SIGINT)
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with trio.move_on_after(0.2):
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await portal.run(
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"piker.brokers.core", 'modify_quote_stream',
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broker=brokermod.name, tickers=[])
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# cancel GUI update task
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nursery.cancel_scope.cancel()
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