Add aiter api to NoBsWs and rework cryptofeed relay to not be OOPy
parent
6669ba6590
commit
34fb497eb4
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@ -26,7 +26,7 @@ from contextlib import asynccontextmanager as acm, AsyncExitStack
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from itertools import count
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from functools import partial
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from datetime import datetime
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from typing import Any, List, Dict, Optional, Iterable
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from typing import Any, List, Dict, Optional, Iterable, Callable
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import pendulum
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import asks
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@ -43,7 +43,7 @@ from .._util import resproc
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from piker import config
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from piker.log import get_logger
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from tractor.trionics import broadcast_receiver, BroadcastReceiver
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from tractor.trionics import broadcast_receiver, BroadcastReceiver, maybe_open_context
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from tractor import to_asyncio
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from cryptofeed import FeedHandler
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@ -192,6 +192,7 @@ def get_config() -> dict[str, Any]:
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section = conf.get('deribit')
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# TODO: document why we send this, basically because logging params for cryptofeed
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conf['log'] = {}
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conf['log']['disabled'] = True
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@ -203,7 +204,7 @@ def get_config() -> dict[str, Any]:
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class Client:
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def __init__(self, n: Nursery, ws: NoBsWs) -> None:
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def __init__(self, json_rpc: Callable) -> None:
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self._pairs: dict[str, Any] = None
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config = get_config().get('deribit', {})
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@ -216,137 +217,12 @@ class Client:
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self._key_id = None
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self._key_secret = None
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self._ws = ws
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self._n = n
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self._rpc_id: Iterable = count(0)
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self._rpc_results: Dict[int, Dict] = {}
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self._expiry_time: int = float('inf')
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self._access_token: Optional[str] = None
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self._refresh_token: Optional[str] = None
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self.feeds = CryptoFeedRelay()
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self.json_rpc = json_rpc
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@property
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def currencies(self):
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return ['btc', 'eth', 'sol', 'usd']
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def _next_json_body(self, method: str, params: Dict):
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"""get the typical json rpc 2.0 msg body and increment the req id
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"""
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return {
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'jsonrpc': '2.0',
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'id': next(self._rpc_id),
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'method': method,
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'params': params
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}
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async def start_rpc(self):
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"""launch message receiver
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"""
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self._n.start_soon(self._recv_task)
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# if we have client creds launch auth loop
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if self._key_id is not None:
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await self._n.start(self._auth_loop)
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async def _recv_task(self):
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"""receives every ws message and stores it in its corresponding result
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field, then sets the event to wakeup original sender tasks.
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"""
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while True:
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msg = JSONRPCResult(**(await self._ws.recv_msg()))
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if msg.id not in self._rpc_results:
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# in case this message wasn't beign accounted for store it
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self._rpc_results[msg.id] = {
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'result': None,
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'event': trio.Event()
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}
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self._rpc_results[msg.id]['result'] = msg
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self._rpc_results[msg.id]['event'].set()
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async def json_rpc(self, method: str, params: Dict) -> Dict:
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"""perform a json rpc call and wait for the result, raise exception in
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case of error field present on response
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"""
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msg = self._next_json_body(method, params)
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_id = msg['id']
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self._rpc_results[_id] = {
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'result': None,
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'event': trio.Event()
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}
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await self._ws.send_msg(msg)
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await self._rpc_results[_id]['event'].wait()
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ret = self._rpc_results[_id]['result']
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del self._rpc_results[_id]
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if ret.error is not None:
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raise Exception(json.dumps(ret.error, indent=4))
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return ret
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async def _auth_loop(
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self,
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task_status: TaskStatus = trio.TASK_STATUS_IGNORED
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):
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"""Background task that adquires a first access token and then will
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refresh the access token while the nursery isn't cancelled.
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https://docs.deribit.com/?python#authentication-2
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"""
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renew_time = 10
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access_scope = 'trade:read_write'
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self._expiry_time = time.time()
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got_access = False
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while True:
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if time.time() - self._expiry_time < renew_time:
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# if we are close to token expiry time
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if self._refresh_token != None:
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# if we have a refresh token already dont need to send
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# secret
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params = {
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'grant_type': 'refresh_token',
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'refresh_token': self._refresh_token,
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'scope': access_scope
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}
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else:
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# we don't have refresh token, send secret to initialize
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params = {
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'grant_type': 'client_credentials',
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'client_id': self._key_id,
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'client_secret': self._key_secret,
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'scope': access_scope
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}
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resp = await self.json_rpc('public/auth', params)
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result = resp.result
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self._expiry_time = time.time() + result['expires_in']
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self._refresh_token = result['refresh_token']
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if 'access_token' in result:
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self._access_token = result['access_token']
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if not got_access:
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# first time this loop runs we must indicate task is
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# started, we have auth
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got_access = True
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task_status.started()
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else:
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await trio.sleep(renew_time / 2)
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async def get_balances(self, kind: str = 'option') -> dict[str, float]:
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"""Return the set of positions for this account
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by symbol.
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@ -539,40 +415,156 @@ async def get_client() -> Client:
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trio.open_nursery() as n,
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open_autorecon_ws(_testnet_ws_url) as ws
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):
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client = Client(n, ws)
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await client.start_rpc()
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await client.cache_symbols()
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yield client
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await client.feeds.stop()
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_rpc_id: Iterable = count(0)
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_rpc_results: Dict[int, Dict] = {}
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class CryptoFeedRelay:
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_expiry_time: int = float('inf')
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_access_token: Optional[str] = None
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_refresh_token: Optional[str] = None
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def __init__(self):
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self._fh = FeedHandler(config=get_config())
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def _next_json_body(method: str, params: Dict):
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"""get the typical json rpc 2.0 msg body and increment the req id
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"""
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return {
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'jsonrpc': '2.0',
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'id': next(_rpc_id),
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'method': method,
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'params': params
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}
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self._price_streams: dict[str, BroadcastReceiver] = {}
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self._order_stream: Optional[BroadcastReceiver] = None
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async def json_rpc(method: str, params: Dict) -> Dict:
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"""perform a json rpc call and wait for the result, raise exception in
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case of error field present on response
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"""
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msg = _next_json_body(method, params)
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_id = msg['id']
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self._loop = None
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_rpc_results[_id] = {
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'result': None,
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'event': trio.Event()
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}
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async def stop(self):
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await to_asyncio.run_task(
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partial(self._fh.stop_async, loop=self._loop))
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await ws.send_msg(msg)
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@acm
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async def open_price_feed(
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self,
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instruments: List[str]
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) -> trio.abc.ReceiveStream:
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inst_str = ','.join(instruments)
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instruments = [piker_sym_to_cb_sym(i) for i in instruments]
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await _rpc_results[_id]['event'].wait()
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if inst_str in self._price_streams:
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# TODO: a good value for maxlen?
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yield broadcast_receiver(self._price_streams[inst_str], 10)
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ret = _rpc_results[_id]['result']
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del _rpc_results[_id]
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if ret.error is not None:
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raise Exception(json.dumps(ret.error, indent=4))
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return ret
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async def _recv_task():
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"""receives every ws message and stores it in its corresponding result
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field, then sets the event to wakeup original sender tasks.
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"""
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async for msg in ws:
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msg = JSONRPCResult(**msg)
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if msg.id not in _rpc_results:
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# in case this message wasn't beign accounted for store it
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_rpc_results[msg.id] = {
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'result': None,
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'event': trio.Event()
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}
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_rpc_results[msg.id]['result'] = msg
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_rpc_results[msg.id]['event'].set()
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client = Client(json_rpc)
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async def _auth_loop(
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task_status: TaskStatus = trio.TASK_STATUS_IGNORED
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):
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"""Background task that adquires a first access token and then will
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refresh the access token while the nursery isn't cancelled.
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https://docs.deribit.com/?python#authentication-2
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"""
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renew_time = 10
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access_scope = 'trade:read_write'
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_expiry_time = time.time()
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got_access = False
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nonlocal _refresh_token
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nonlocal _access_token
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while True:
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if time.time() - _expiry_time < renew_time:
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# if we are close to token expiry time
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if _refresh_token != None:
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# if we have a refresh token already dont need to send
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# secret
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params = {
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'grant_type': 'refresh_token',
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'refresh_token': _refresh_token,
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'scope': access_scope
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}
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else:
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# we don't have refresh token, send secret to initialize
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params = {
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'grant_type': 'client_credentials',
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'client_id': client._key_id,
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'client_secret': client._key_secret,
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'scope': access_scope
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}
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resp = await json_rpc('public/auth', params)
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result = resp.result
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_expiry_time = time.time() + result['expires_in']
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_refresh_token = result['refresh_token']
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if 'access_token' in result:
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_access_token = result['access_token']
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if not got_access:
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# first time this loop runs we must indicate task is
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# started, we have auth
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got_access = True
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task_status.started()
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else:
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await trio.sleep(renew_time / 2)
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n.start_soon(_recv_task)
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# if we have client creds launch auth loop
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if client._key_id is not None:
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await n.start(_auth_loop)
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await client.cache_symbols()
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yield client
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@acm
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async def open_feed_handler():
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fh = FeedHandler(config=get_config())
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yield fh
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await to_asyncio.run_task(fh.stop_async)
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@acm
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async def maybe_open_feed_handler() -> trio.abc.ReceiveStream:
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async with maybe_open_context(
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acm_func=open_feed_handler,
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key='feedhandler',
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) as (cache_hit, fh):
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yield fh
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@acm
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async def open_price_feed(
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instrument: str
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) -> trio.abc.ReceiveStream:
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# XXX: hangs when going into this ctx mngr
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async with maybe_open_feed_handler() as fh:
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async def relay(
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from_trio: asyncio.Queue,
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to_trio: trio.abc.SendChannel,
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@ -603,20 +595,19 @@ class CryptoFeedRelay:
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]
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}))
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self._fh.add_feed(
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fh.add_feed(
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DERIBIT,
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channels=[TRADES, L1_BOOK],
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symbols=instruments,
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symbols=[instrument],
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callbacks={
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TRADES: _trade,
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L1_BOOK: _l1
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})
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if not self._fh.running:
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self._fh.run(
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if not fh.running:
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fh.run(
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start_loop=False,
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install_signal_handlers=False)
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self._loop = asyncio.get_event_loop()
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# sync with trio
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to_trio.send_nowait(None)
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@ -630,22 +621,34 @@ class CryptoFeedRelay:
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async with to_asyncio.open_channel_from(
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relay
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) as (first, chan):
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self._price_streams[inst_str] = chan
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yield self._price_streams[inst_str]
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yield chan
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@acm
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async def open_order_feed(
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self,
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instruments: List[str]
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) -> trio.abc.ReceiveStream:
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inst_str = ','.join(instruments)
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instruments = [piker_sym_to_cb_sym(i) for i in instruments]
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if self._order_stream:
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yield broadcast_receiver(self._order_streams[inst_str], 10)
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@acm
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async def maybe_open_price_feed(
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instrument: str
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) -> trio.abc.ReceiveStream:
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# TODO: add a predicate to maybe_open_context
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async with maybe_open_context(
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acm_func=open_price_feed,
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kwargs={
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'instrument': instrument
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},
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key=f'{instrument}-price',
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) as (cache_hit, feed):
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if cache_hit:
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yield broadcast_receiver(feed, 10)
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else:
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yield feed
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@acm
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async def open_order_feed(
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instrument: List[str]
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) -> trio.abc.ReceiveStream:
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async with maybe_open_feed_handler() as fh:
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async def relay(
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from_trio: asyncio.Queue,
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to_trio: trio.abc.SendChannel,
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@ -656,20 +659,19 @@ class CryptoFeedRelay:
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async def _order_info(data: dict, receipt_timestamp):
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breakpoint()
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self._fh.add_feed(
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fh.add_feed(
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DERIBIT,
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channels=[FILLS, ORDER_INFO],
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symbols=instruments,
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symbols=[instrument],
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callbacks={
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FILLS: _fill,
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ORDER_INFO: _order_info,
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})
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if not self._fh.running:
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self._fh.run(
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if not fh.running:
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fh.run(
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start_loop=False,
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install_signal_handlers=False)
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self._loop = asyncio.get_event_loop()
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# sync with trio
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to_trio.send_nowait(None)
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@ -683,5 +685,22 @@ class CryptoFeedRelay:
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async with to_asyncio.open_channel_from(
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relay
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) as (first, chan):
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self._order_stream = chan
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yield self._order_stream
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yield chan
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@acm
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async def maybe_open_order_feed(
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instrument: str
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) -> trio.abc.ReceiveStream:
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# TODO: add a predicate to maybe_open_context
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async with maybe_open_context(
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acm_func=open_order_feed,
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kwargs={
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'instrument': instrument
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},
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key=f'{instrument}-order',
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) as (cache_hit, feed):
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if cache_hit:
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yield broadcast_receiver(feed, 10)
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else:
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yield feed
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@ -48,7 +48,8 @@ from cryptofeed.symbols import Symbol
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from .api import (
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Client, Trade,
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get_config,
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str_to_cb_sym, piker_sym_to_cb_sym, cb_sym_to_deribit_inst
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str_to_cb_sym, piker_sym_to_cb_sym, cb_sym_to_deribit_inst,
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maybe_open_price_feed
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)
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_spawn_kwargs = {
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@ -144,8 +145,7 @@ async def stream_quotes(
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nsym = piker_sym_to_cb_sym(sym)
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async with client.feeds.open_price_feed(
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symbols) as stream:
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async with maybe_open_price_feed(sym) as stream:
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cache = await client.cache_symbols()
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@ -123,6 +123,12 @@ class NoBsWs:
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except self.recon_errors:
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await self._connect()
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def __aiter__(self):
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return self
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async def __anext__(self):
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return await self.recv_msg()
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@asynccontextmanager
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async def open_autorecon_ws(
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