mirror of
https://github.com/aljazceru/bitfinex-api-py.git
synced 2025-12-20 15:24:21 +01:00
79 lines
2.7 KiB
Python
79 lines
2.7 KiB
Python
import json, asyncio, websockets
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from pyee.asyncio import AsyncIOEventEmitter
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from .manager import Manager
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from .channels import Channels
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from .errors import ConnectionNotOpen
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class BfxWebsocketClient(object):
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def __init__(self, host, channels=None):
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self.host, self.chanIds, self.event_emitter = host, dict(), AsyncIOEventEmitter()
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self.manager, self.websocket = Manager(event_emitter=self.event_emitter), None
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self.channels = channels or list()
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def run_forever(self):
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asyncio.run(self.connect())
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async def connect(self):
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async for websocket in websockets.connect(self.host):
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try:
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self.websocket = websocket
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for channel, parameters in self.channels:
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await self.subscribe(channel, **parameters)
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else: self.event_emitter.emit("open")
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async for message in websocket:
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message = json.loads(message)
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if isinstance(message, dict) and message["event"] == "subscribed":
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del message["event"]
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self.chanIds[message["chanId"]] = message
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self.event_emitter.emit("subscribed", message)
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elif isinstance(message, dict) and message["event"] == "unsubscribed":
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if message["status"] == "OK":
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del self.chanIds[message["chanId"]]
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elif isinstance(message, list):
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chanId, parameters = message[0], message[1:]
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self.manager.handle(self.chanIds[chanId], *parameters)
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except websockets.ConnectionClosed:
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continue
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def __require_websocket_connection(function):
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async def wrapper(self, *args, **kwargs):
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if self.websocket == None or self.websocket.open == False:
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raise ConnectionNotOpen("No open connection with the server.")
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await function(self, *args, **kwargs)
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return wrapper
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@__require_websocket_connection
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async def subscribe(self, channel, **kwargs):
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await self.websocket.send(json.dumps({
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"event": "subscribe",
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"channel": channel,
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**kwargs
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}))
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@__require_websocket_connection
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async def unsubscribe(self, chanId):
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await self.websocket.send(json.dumps({
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"event": "unsubscribe",
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"chanId": chanId
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}))
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async def clear(self):
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for chanId in self.chanIds.keys():
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await self.unsubscribe(chanId)
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def on(self, event):
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def handler(function):
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self.event_emitter.on(event, function)
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return handler |