Factor clearing related endpoints into new `.kraken.broker` submod
Tyler Goodlet
parent
b118becc84
commit
90cc6eb317
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@ -1,5 +1,5 @@
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# piker: trading gear for hackers
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# Copyright (C) Tyler Goodlet (in stewardship for piker0)
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# Copyright (C) Tyler Goodlet (in stewardship for pikers)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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@ -21,8 +21,7 @@ Kraken backend.
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from contextlib import asynccontextmanager as acm
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from dataclasses import asdict, field
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from datetime import datetime
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from pprint import pformat
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from typing import Any, Optional, AsyncIterator, Callable, Union
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from typing import Any, Optional, Callable, Union
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import time
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from trio_typing import TaskStatus
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@ -40,29 +39,21 @@ import hashlib
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import hmac
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import base64
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from .. import config
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from .._cacheables import open_cached_client
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from ._util import (
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from piker import config
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from piker._cacheables import open_cached_client
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from piker.brokers._util import (
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resproc,
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SymbolNotFound,
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BrokerError,
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DataThrottle,
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DataUnavailable,
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)
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from ..log import get_logger, get_console_log
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from ..data import ShmArray
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from ..data._web_bs import open_autorecon_ws, NoBsWs
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from ..clearing._paper_engine import PaperBoi
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from ..clearing._messages import (
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BrokerdPosition, BrokerdOrder, BrokerdStatus,
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BrokerdOrderAck, BrokerdError, BrokerdCancel,
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BrokerdFill,
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)
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from piker.log import get_logger, get_console_log
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from piker.data import ShmArray
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from piker.data._web_bs import open_autorecon_ws, NoBsWs
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log = get_logger(__name__)
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# <uri>/<version>/
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_url = 'https://api.kraken.com/0'
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@ -126,18 +117,6 @@ class Pair(BaseModel):
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ordermin: float # minimum order volume for pair
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class Trade(BaseModel):
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'''
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Trade class that helps parse and validate ownTrades stream
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'''
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reqid: str # kraken order transaction id
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action: str # buy or sell
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price: str # price of asset
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size: str # vol of asset
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broker_time: str # e.g GTC, GTD
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@dataclass
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class OHLC:
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'''
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@ -493,41 +472,6 @@ async def get_client() -> Client:
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yield client
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def pack_positions(
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acc: str,
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trades: dict
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) -> list[Any]:
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positions: dict[str, float] = {}
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vols: dict[str, float] = {}
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costs: dict[str, float] = {}
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position_msgs: list[Any] = []
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for trade in trades.values():
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sign = -1 if trade['type'] == 'sell' else 1
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pair = trade['pair']
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vol = float(trade['vol'])
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vols[pair] = vols.get(pair, 0) + sign * vol
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costs[pair] = costs.get(pair, 0) + sign * float(trade['cost'])
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positions[pair] = costs[pair] / vols[pair] if vols[pair] else 0
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for ticker, pos in positions.items():
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vol = float(vols[ticker])
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if not vol:
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continue
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norm_sym = normalize_symbol(ticker)
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msg = BrokerdPosition(
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broker='kraken',
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account=acc,
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symbol=norm_sym,
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currency=norm_sym[-3:],
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size=vol,
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avg_price=float(pos),
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)
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position_msgs.append(msg.dict())
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return position_msgs
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def normalize_symbol(
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ticker: str
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) -> str:
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@ -543,322 +487,6 @@ def normalize_symbol(
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return ticker.lower()
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def make_auth_sub(data: dict[str, Any]) -> dict[str, str]:
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'''
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Create a request subscription packet dict.
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## TODO: point to the auth urls
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https://docs.kraken.com/websockets/#message-subscribe
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'''
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# eg. specific logic for this in kraken's sync client:
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# https://github.com/krakenfx/kraken-wsclient-py/blob/master/kraken_wsclient_py/kraken_wsclient_py.py#L188
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return {
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'event': 'subscribe',
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'subscription': data,
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}
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async def handle_order_requests(
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client: Client,
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ems_order_stream: tractor.MsgStream,
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) -> None:
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request_msg: dict
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order: BrokerdOrder
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async for request_msg in ems_order_stream:
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log.info(
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'Received order request:\n'
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f'{pformat(request_msg)}'
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)
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action = request_msg['action']
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if action in {'buy', 'sell'}:
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account = request_msg['account']
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if account != 'kraken.spot':
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log.error(
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'This is a kraken account, \
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only a `kraken.spot` selection is valid'
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)
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await ems_order_stream.send(BrokerdError(
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oid=request_msg['oid'],
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symbol=request_msg['symbol'],
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# reason=f'Kraken only, No account found: `{account}` ?',
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reason=(
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'Kraken only, order mode disabled due to '
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'https://github.com/pikers/piker/issues/299'
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),
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).dict())
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continue
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# validate
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order = BrokerdOrder(**request_msg)
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# call our client api to submit the order
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resp = await client.submit_limit(
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symbol=order.symbol,
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price=order.price,
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action=order.action,
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size=order.size,
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reqid=order.reqid,
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)
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err = resp['error']
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if err:
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oid = order.oid
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log.error(f'Failed to submit order: {oid}')
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await ems_order_stream.send(
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BrokerdError(
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oid=order.oid,
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reqid=order.reqid,
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symbol=order.symbol,
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reason="Failed order submission",
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broker_details=resp
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).dict()
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)
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else:
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# TODO: handle multiple orders (cancels?)
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# txid is an array of strings
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if order.reqid is None:
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reqid = resp['result']['txid'][0]
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else:
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# update the internal pairing of oid to krakens
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# txid with the new txid that is returned on edit
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reqid = resp['result']['txid']
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# deliver ack that order has been submitted to broker routing
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await ems_order_stream.send(
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BrokerdOrderAck(
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# ems order request id
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oid=order.oid,
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# broker specific request id
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reqid=reqid,
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# account the made the order
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account=order.account
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).dict()
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)
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elif action == 'cancel':
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msg = BrokerdCancel(**request_msg)
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# Send order cancellation to kraken
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resp = await client.submit_cancel(
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reqid=msg.reqid
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)
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# Check to make sure there was no error returned by
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# the kraken endpoint. Assert one order was cancelled.
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try:
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result = resp['result']
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count = result['count']
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# check for 'error' key if we received no 'result'
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except KeyError:
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error = resp.get('error')
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await ems_order_stream.send(
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BrokerdError(
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oid=msg.oid,
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reqid=msg.reqid,
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symbol=msg.symbol,
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reason="Failed order cancel",
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broker_details=resp
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).dict()
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)
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if not error:
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raise BrokerError(f'Unknown order cancel response: {resp}')
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else:
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if not count: # no orders were cancelled?
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# XXX: what exactly is this from and why would we care?
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# there doesn't seem to be any docs here?
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# https://docs.kraken.com/rest/#operation/cancelOrder
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# Check to make sure the cancellation is NOT pending,
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# then send the confirmation to the ems order stream
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pending = result.get('pending')
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if pending:
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log.error(f'Order {oid} cancel was not yet successful')
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await ems_order_stream.send(
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BrokerdError(
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oid=msg.oid,
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reqid=msg.reqid,
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symbol=msg.symbol,
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# TODO: maybe figure out if pending
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# cancels will eventually get cancelled
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reason="Order cancel is still pending?",
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broker_details=resp
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).dict()
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)
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else: # order cancel success case.
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await ems_order_stream.send(
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BrokerdStatus(
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reqid=msg.reqid,
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account=msg.account,
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time_ns=time.time_ns(),
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status='cancelled',
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reason='Order cancelled',
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broker_details={'name': 'kraken'}
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).dict()
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)
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else:
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log.error(f'Unknown order command: {request_msg}')
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@tractor.context
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async def trades_dialogue(
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ctx: tractor.Context,
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loglevel: str = None,
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) -> AsyncIterator[dict[str, Any]]:
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# XXX: required to propagate ``tractor`` loglevel to piker logging
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get_console_log(loglevel or tractor.current_actor().loglevel)
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@acm
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async def subscribe(ws: wsproto.WSConnection, token: str):
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# XXX: setup subs
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# https://docs.kraken.com/websockets/#message-subscribe
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# specific logic for this in kraken's shitty sync client:
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# https://github.com/krakenfx/kraken-wsclient-py/blob/master/kraken_wsclient_py/kraken_wsclient_py.py#L188
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trades_sub = make_auth_sub(
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{'name': 'ownTrades', 'token': token}
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)
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# TODO: we want to eventually allow unsubs which should
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# be completely fine to request from a separate task
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# since internally the ws methods appear to be FIFO
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# locked.
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await ws.send_msg(trades_sub)
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yield
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# unsub from all pairs on teardown
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await ws.send_msg({
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'event': 'unsubscribe',
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'subscription': ['ownTrades'],
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})
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# XXX: do we need to ack the unsub?
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# await ws.recv_msg()
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# Authenticated block
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async with get_client() as client:
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if not client._api_key:
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log.error('Missing Kraken API key: Trades WS connection failed')
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await ctx.started(({}, ['paper']))
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async with (
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ctx.open_stream() as ems_stream,
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trio.open_nursery() as n,
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):
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client = PaperBoi(
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'kraken',
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ems_stream,
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_buys={},
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_sells={},
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_reqids={},
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# TODO: load paper positions from ``positions.toml``
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_positions={},
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)
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# TODO: maybe add multiple accounts
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n.start_soon(handle_order_requests, client, ems_stream)
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acc_name = 'kraken.' + client._name
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trades = await client.get_trades()
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position_msgs = pack_positions(acc_name, trades)
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await ctx.started((position_msgs, (acc_name,)))
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# Get websocket token for authenticated data stream
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# Assert that a token was actually received.
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resp = await client.endpoint('GetWebSocketsToken', {})
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# lol wtf is this..
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assert resp['error'] == []
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token = resp['result']['token']
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async with (
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ctx.open_stream() as ems_stream,
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trio.open_nursery() as n,
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):
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# TODO: maybe add multiple accounts
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n.start_soon(handle_order_requests, client, ems_stream)
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# Process trades msg stream of ws
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async with open_autorecon_ws(
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'wss://ws-auth.kraken.com/',
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fixture=subscribe,
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token=token,
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) as ws:
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async for msg in process_trade_msgs(ws):
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for trade in msg:
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# check the type of packaged message
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assert type(trade) == Trade
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# prepare and send a filled status update
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filled_msg = BrokerdStatus(
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reqid=trade.reqid,
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time_ns=time.time_ns(),
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account='kraken.spot',
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status='filled',
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filled=float(trade.size),
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reason='Order filled by kraken',
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broker_details={
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'name': 'kraken',
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'broker_time': trade.broker_time
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},
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# TODO: figure out if kraken gives a count
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# of how many units of underlying were
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# filled. Alternatively we can decrement
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# this value ourselves by associating and
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# calcing from the diff with the original
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# client-side request, see:
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# https://github.com/pikers/piker/issues/296
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remaining=0,
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)
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await ems_stream.send(filled_msg.dict())
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# send a fill msg for gui update
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fill_msg = BrokerdFill(
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reqid=trade.reqid,
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time_ns=time.time_ns(),
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action=trade.action,
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size=float(trade.size),
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price=float(trade.price),
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# TODO: maybe capture more msg data i.e fees?
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broker_details={'name': 'kraken'},
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broker_time=float(trade.broker_time)
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)
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await ems_stream.send(fill_msg.dict())
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async def stream_messages(
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ws: NoBsWs,
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):
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@ -950,48 +578,6 @@ async def process_data_feed_msgs(
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yield msg
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async def process_trade_msgs(
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ws: NoBsWs,
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):
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'''
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Parse and pack data feed messages.
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'''
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sequence_counter = 0
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async for msg in stream_messages(ws):
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try:
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# check that we are on the ownTrades stream and that msgs
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# are arriving in sequence with kraken For clarification the
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# kraken ws api docs for this stream:
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# https://docs.kraken.com/websockets/#message-ownTrades
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assert msg[1] == 'ownTrades'
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assert msg[2]['sequence'] > sequence_counter
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sequence_counter += 1
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raw_msgs = msg[0]
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trade_msgs = []
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# Check that we are only processing new trades
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if msg[2]['sequence'] != 1:
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# check if its a new order or an update msg
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for trade_msg in raw_msgs:
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trade = list(trade_msg.values())[0]
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order_msg = Trade(
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reqid=trade['ordertxid'],
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action=trade['type'],
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price=trade['price'],
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size=trade['vol'],
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broker_time=trade['time']
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)
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trade_msgs.append(order_msg)
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yield trade_msgs
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except AssertionError:
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print(f'UNHANDLED MSG: {msg}')
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yield msg
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def normalize(
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ohlc: OHLC,
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|
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@ -0,0 +1,457 @@
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# piker: trading gear for hackers
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# Copyright (C) Tyler Goodlet (in stewardship for pikers)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
|
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
|
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|
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# You should have received a copy of the GNU Affero General Public License
|
||||
# along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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Order api and machinery
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'''
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from contextlib import asynccontextmanager as acm
|
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from pprint import pformat
|
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import time
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from typing import (
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Any,
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AsyncIterator,
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# Callable,
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# Optional,
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# Union,
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)
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from pydantic import BaseModel
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import trio
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import tractor
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import wsproto
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from . import (
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Client,
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BrokerError,
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get_client,
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get_console_log,
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log,
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normalize_symbol,
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open_autorecon_ws,
|
||||
NoBsWs,
|
||||
stream_messages,
|
||||
)
|
||||
from ..clearing._paper_engine import PaperBoi
|
||||
from ..clearing._messages import (
|
||||
BrokerdPosition, BrokerdOrder, BrokerdStatus,
|
||||
BrokerdOrderAck, BrokerdError, BrokerdCancel,
|
||||
BrokerdFill,
|
||||
)
|
||||
|
||||
|
||||
class Trade(BaseModel):
|
||||
'''
|
||||
Trade class that helps parse and validate ownTrades stream
|
||||
|
||||
'''
|
||||
reqid: str # kraken order transaction id
|
||||
action: str # buy or sell
|
||||
price: str # price of asset
|
||||
size: str # vol of asset
|
||||
broker_time: str # e.g GTC, GTD
|
||||
|
||||
|
||||
def pack_positions(
|
||||
acc: str,
|
||||
trades: dict
|
||||
) -> list[Any]:
|
||||
positions: dict[str, float] = {}
|
||||
vols: dict[str, float] = {}
|
||||
costs: dict[str, float] = {}
|
||||
position_msgs: list[Any] = []
|
||||
|
||||
for trade in trades.values():
|
||||
sign = -1 if trade['type'] == 'sell' else 1
|
||||
pair = trade['pair']
|
||||
vol = float(trade['vol'])
|
||||
vols[pair] = vols.get(pair, 0) + sign * vol
|
||||
costs[pair] = costs.get(pair, 0) + sign * float(trade['cost'])
|
||||
positions[pair] = costs[pair] / vols[pair] if vols[pair] else 0
|
||||
|
||||
for ticker, pos in positions.items():
|
||||
vol = float(vols[ticker])
|
||||
if not vol:
|
||||
continue
|
||||
norm_sym = normalize_symbol(ticker)
|
||||
msg = BrokerdPosition(
|
||||
broker='kraken',
|
||||
account=acc,
|
||||
symbol=norm_sym,
|
||||
currency=norm_sym[-3:],
|
||||
size=vol,
|
||||
avg_price=float(pos),
|
||||
)
|
||||
position_msgs.append(msg.dict())
|
||||
|
||||
return position_msgs
|
||||
|
||||
|
||||
async def handle_order_requests(
|
||||
|
||||
client: Client,
|
||||
ems_order_stream: tractor.MsgStream,
|
||||
|
||||
) -> None:
|
||||
|
||||
request_msg: dict
|
||||
order: BrokerdOrder
|
||||
|
||||
async for request_msg in ems_order_stream:
|
||||
log.info(
|
||||
'Received order request:\n'
|
||||
f'{pformat(request_msg)}'
|
||||
)
|
||||
|
||||
action = request_msg['action']
|
||||
|
||||
if action in {'buy', 'sell'}:
|
||||
|
||||
account = request_msg['account']
|
||||
if account != 'kraken.spot':
|
||||
log.error(
|
||||
'This is a kraken account, \
|
||||
only a `kraken.spot` selection is valid'
|
||||
)
|
||||
await ems_order_stream.send(BrokerdError(
|
||||
oid=request_msg['oid'],
|
||||
symbol=request_msg['symbol'],
|
||||
|
||||
# reason=f'Kraken only, No account found: `{account}` ?',
|
||||
reason=(
|
||||
'Kraken only, order mode disabled due to '
|
||||
'https://github.com/pikers/piker/issues/299'
|
||||
),
|
||||
|
||||
).dict())
|
||||
continue
|
||||
|
||||
# validate
|
||||
order = BrokerdOrder(**request_msg)
|
||||
# call our client api to submit the order
|
||||
resp = await client.submit_limit(
|
||||
symbol=order.symbol,
|
||||
price=order.price,
|
||||
action=order.action,
|
||||
size=order.size,
|
||||
reqid=order.reqid,
|
||||
)
|
||||
|
||||
err = resp['error']
|
||||
if err:
|
||||
oid = order.oid
|
||||
log.error(f'Failed to submit order: {oid}')
|
||||
|
||||
await ems_order_stream.send(
|
||||
BrokerdError(
|
||||
oid=order.oid,
|
||||
reqid=order.reqid,
|
||||
symbol=order.symbol,
|
||||
reason="Failed order submission",
|
||||
broker_details=resp
|
||||
).dict()
|
||||
)
|
||||
else:
|
||||
# TODO: handle multiple orders (cancels?)
|
||||
# txid is an array of strings
|
||||
if order.reqid is None:
|
||||
reqid = resp['result']['txid'][0]
|
||||
else:
|
||||
# update the internal pairing of oid to krakens
|
||||
# txid with the new txid that is returned on edit
|
||||
reqid = resp['result']['txid']
|
||||
|
||||
# deliver ack that order has been submitted to broker routing
|
||||
await ems_order_stream.send(
|
||||
BrokerdOrderAck(
|
||||
|
||||
# ems order request id
|
||||
oid=order.oid,
|
||||
|
||||
# broker specific request id
|
||||
reqid=reqid,
|
||||
|
||||
# account the made the order
|
||||
account=order.account
|
||||
|
||||
).dict()
|
||||
)
|
||||
|
||||
elif action == 'cancel':
|
||||
msg = BrokerdCancel(**request_msg)
|
||||
|
||||
# Send order cancellation to kraken
|
||||
resp = await client.submit_cancel(
|
||||
reqid=msg.reqid
|
||||
)
|
||||
|
||||
# Check to make sure there was no error returned by
|
||||
# the kraken endpoint. Assert one order was cancelled.
|
||||
try:
|
||||
result = resp['result']
|
||||
count = result['count']
|
||||
|
||||
# check for 'error' key if we received no 'result'
|
||||
except KeyError:
|
||||
error = resp.get('error')
|
||||
|
||||
await ems_order_stream.send(
|
||||
BrokerdError(
|
||||
oid=msg.oid,
|
||||
reqid=msg.reqid,
|
||||
symbol=msg.symbol,
|
||||
reason="Failed order cancel",
|
||||
broker_details=resp
|
||||
).dict()
|
||||
)
|
||||
|
||||
if not error:
|
||||
raise BrokerError(f'Unknown order cancel response: {resp}')
|
||||
|
||||
else:
|
||||
if not count: # no orders were cancelled?
|
||||
|
||||
# XXX: what exactly is this from and why would we care?
|
||||
# there doesn't seem to be any docs here?
|
||||
# https://docs.kraken.com/rest/#operation/cancelOrder
|
||||
|
||||
# Check to make sure the cancellation is NOT pending,
|
||||
# then send the confirmation to the ems order stream
|
||||
pending = result.get('pending')
|
||||
if pending:
|
||||
log.error(f'Order {oid} cancel was not yet successful')
|
||||
|
||||
await ems_order_stream.send(
|
||||
BrokerdError(
|
||||
oid=msg.oid,
|
||||
reqid=msg.reqid,
|
||||
symbol=msg.symbol,
|
||||
# TODO: maybe figure out if pending
|
||||
# cancels will eventually get cancelled
|
||||
reason="Order cancel is still pending?",
|
||||
broker_details=resp
|
||||
).dict()
|
||||
)
|
||||
|
||||
else: # order cancel success case.
|
||||
|
||||
await ems_order_stream.send(
|
||||
BrokerdStatus(
|
||||
reqid=msg.reqid,
|
||||
account=msg.account,
|
||||
time_ns=time.time_ns(),
|
||||
status='cancelled',
|
||||
reason='Order cancelled',
|
||||
broker_details={'name': 'kraken'}
|
||||
).dict()
|
||||
)
|
||||
else:
|
||||
log.error(f'Unknown order command: {request_msg}')
|
||||
|
||||
|
||||
def make_auth_sub(data: dict[str, Any]) -> dict[str, str]:
|
||||
'''
|
||||
Create a request subscription packet dict.
|
||||
|
||||
## TODO: point to the auth urls
|
||||
https://docs.kraken.com/websockets/#message-subscribe
|
||||
|
||||
'''
|
||||
# eg. specific logic for this in kraken's sync client:
|
||||
# https://github.com/krakenfx/kraken-wsclient-py/blob/master/kraken_wsclient_py/kraken_wsclient_py.py#L188
|
||||
return {
|
||||
'event': 'subscribe',
|
||||
'subscription': data,
|
||||
}
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def trades_dialogue(
|
||||
ctx: tractor.Context,
|
||||
loglevel: str = None,
|
||||
) -> AsyncIterator[dict[str, Any]]:
|
||||
|
||||
# XXX: required to propagate ``tractor`` loglevel to piker logging
|
||||
get_console_log(loglevel or tractor.current_actor().loglevel)
|
||||
|
||||
@acm
|
||||
async def subscribe(ws: wsproto.WSConnection, token: str):
|
||||
# XXX: setup subs
|
||||
# https://docs.kraken.com/websockets/#message-subscribe
|
||||
# specific logic for this in kraken's shitty sync client:
|
||||
# https://github.com/krakenfx/kraken-wsclient-py/blob/master/kraken_wsclient_py/kraken_wsclient_py.py#L188
|
||||
trades_sub = make_auth_sub(
|
||||
{'name': 'ownTrades', 'token': token}
|
||||
)
|
||||
|
||||
# TODO: we want to eventually allow unsubs which should
|
||||
# be completely fine to request from a separate task
|
||||
# since internally the ws methods appear to be FIFO
|
||||
# locked.
|
||||
await ws.send_msg(trades_sub)
|
||||
|
||||
yield
|
||||
|
||||
# unsub from all pairs on teardown
|
||||
await ws.send_msg({
|
||||
'event': 'unsubscribe',
|
||||
'subscription': ['ownTrades'],
|
||||
})
|
||||
|
||||
# XXX: do we need to ack the unsub?
|
||||
# await ws.recv_msg()
|
||||
|
||||
# Authenticated block
|
||||
async with get_client() as client:
|
||||
if not client._api_key:
|
||||
log.error('Missing Kraken API key: Trades WS connection failed')
|
||||
await ctx.started(({}, ['paper']))
|
||||
|
||||
async with (
|
||||
ctx.open_stream() as ems_stream,
|
||||
trio.open_nursery() as n,
|
||||
):
|
||||
|
||||
client = PaperBoi(
|
||||
'kraken',
|
||||
ems_stream,
|
||||
_buys={},
|
||||
_sells={},
|
||||
|
||||
_reqids={},
|
||||
|
||||
# TODO: load paper positions from ``positions.toml``
|
||||
_positions={},
|
||||
)
|
||||
|
||||
# TODO: maybe add multiple accounts
|
||||
n.start_soon(handle_order_requests, client, ems_stream)
|
||||
|
||||
acc_name = 'kraken.' + client._name
|
||||
trades = await client.get_trades()
|
||||
|
||||
position_msgs = pack_positions(acc_name, trades)
|
||||
|
||||
await ctx.started((position_msgs, (acc_name,)))
|
||||
|
||||
# Get websocket token for authenticated data stream
|
||||
# Assert that a token was actually received.
|
||||
resp = await client.endpoint('GetWebSocketsToken', {})
|
||||
|
||||
# lol wtf is this..
|
||||
assert resp['error'] == []
|
||||
|
||||
token = resp['result']['token']
|
||||
|
||||
async with (
|
||||
ctx.open_stream() as ems_stream,
|
||||
trio.open_nursery() as n,
|
||||
):
|
||||
# TODO: maybe add multiple accounts
|
||||
n.start_soon(handle_order_requests, client, ems_stream)
|
||||
|
||||
# Process trades msg stream of ws
|
||||
async with open_autorecon_ws(
|
||||
'wss://ws-auth.kraken.com/',
|
||||
fixture=subscribe,
|
||||
token=token,
|
||||
) as ws:
|
||||
async for msg in process_trade_msgs(ws):
|
||||
for trade in msg:
|
||||
# check the type of packaged message
|
||||
assert type(trade) == Trade
|
||||
|
||||
# prepare and send a filled status update
|
||||
filled_msg = BrokerdStatus(
|
||||
reqid=trade.reqid,
|
||||
time_ns=time.time_ns(),
|
||||
|
||||
account='kraken.spot',
|
||||
status='filled',
|
||||
filled=float(trade.size),
|
||||
reason='Order filled by kraken',
|
||||
broker_details={
|
||||
'name': 'kraken',
|
||||
'broker_time': trade.broker_time
|
||||
},
|
||||
|
||||
# TODO: figure out if kraken gives a count
|
||||
# of how many units of underlying were
|
||||
# filled. Alternatively we can decrement
|
||||
# this value ourselves by associating and
|
||||
# calcing from the diff with the original
|
||||
# client-side request, see:
|
||||
# https://github.com/pikers/piker/issues/296
|
||||
remaining=0,
|
||||
)
|
||||
|
||||
await ems_stream.send(filled_msg.dict())
|
||||
|
||||
# send a fill msg for gui update
|
||||
fill_msg = BrokerdFill(
|
||||
reqid=trade.reqid,
|
||||
time_ns=time.time_ns(),
|
||||
|
||||
action=trade.action,
|
||||
size=float(trade.size),
|
||||
price=float(trade.price),
|
||||
# TODO: maybe capture more msg data i.e fees?
|
||||
broker_details={'name': 'kraken'},
|
||||
broker_time=float(trade.broker_time)
|
||||
)
|
||||
|
||||
await ems_stream.send(fill_msg.dict())
|
||||
|
||||
|
||||
async def process_trade_msgs(
|
||||
ws: NoBsWs,
|
||||
):
|
||||
'''
|
||||
Parse and pack data feed messages.
|
||||
|
||||
'''
|
||||
sequence_counter = 0
|
||||
async for msg in stream_messages(ws):
|
||||
|
||||
try:
|
||||
# check that we are on the ownTrades stream and that msgs
|
||||
# are arriving in sequence with kraken For clarification the
|
||||
# kraken ws api docs for this stream:
|
||||
# https://docs.kraken.com/websockets/#message-ownTrades
|
||||
assert msg[1] == 'ownTrades'
|
||||
assert msg[2]['sequence'] > sequence_counter
|
||||
sequence_counter += 1
|
||||
raw_msgs = msg[0]
|
||||
trade_msgs = []
|
||||
|
||||
# Check that we are only processing new trades
|
||||
if msg[2]['sequence'] != 1:
|
||||
# check if its a new order or an update msg
|
||||
for trade_msg in raw_msgs:
|
||||
trade = list(trade_msg.values())[0]
|
||||
order_msg = Trade(
|
||||
reqid=trade['ordertxid'],
|
||||
action=trade['type'],
|
||||
price=trade['price'],
|
||||
size=trade['vol'],
|
||||
broker_time=trade['time']
|
||||
)
|
||||
trade_msgs.append(order_msg)
|
||||
|
||||
yield trade_msgs
|
||||
|
||||
except AssertionError:
|
||||
print(f'UNHANDLED MSG: {msg}')
|
||||
yield msg
|
||||
Loading…
Reference in New Issue