107 lines
4.2 KiB
Python
107 lines
4.2 KiB
Python
"""
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This module manages webhook communication
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"""
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import logging
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import time
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from typing import Any, Dict
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from requests import RequestException, post
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from freqtrade.enums import RPCMessageType
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from freqtrade.rpc import RPC, RPCHandler
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logger = logging.getLogger(__name__)
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logger.debug('Included module rpc.webhook ...')
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class Webhook(RPCHandler):
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""" This class handles all webhook communication """
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def __init__(self, rpc: RPC, config: Dict[str, Any]) -> None:
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"""
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Init the Webhook class, and init the super class RPCHandler
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:param rpc: instance of RPC Helper class
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:param config: Configuration object
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:return: None
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"""
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super().__init__(rpc, config)
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self._url = self._config['webhook']['url']
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self._format = self._config['webhook'].get('format', 'form')
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self._retries = self._config['webhook'].get('retries', 0)
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self._retry_delay = self._config['webhook'].get('retry_delay', 0.1)
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def cleanup(self) -> None:
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"""
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Cleanup pending module resources.
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This will do nothing for webhooks, they will simply not be called anymore
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"""
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pass
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def send_msg(self, msg: Dict[str, Any]) -> None:
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""" Send a message to telegram channel """
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try:
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whconfig = self._config['webhook']
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# DEPRECATED: Sell terminology
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if msg['type'] in [RPCMessageType.BUY, RPCMessageType.SHORT]:
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valuedict = whconfig.get('webhookbuy', None)
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elif msg['type'] in [RPCMessageType.BUY_CANCEL, RPCMessageType.SHORT_CANCEL]:
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valuedict = whconfig.get('webhookbuycancel', None)
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elif msg['type'] in [RPCMessageType.BUY_FILL, RPCMessageType.SHORT_FILL]:
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valuedict = whconfig.get('webhookbuyfill', None)
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elif msg['type'] == RPCMessageType.SELL:
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valuedict = whconfig.get('webhookexit', whconfig.get('webhooksell', None))
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elif msg['type'] == RPCMessageType.SELL_FILL:
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valuedict = whconfig.get('webhookexitfill', whconfig.get('webhookexitfill', None))
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elif msg['type'] == RPCMessageType.SELL_CANCEL:
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valuedict = whconfig.get('webhookexitcancel',
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whconfig.get('webhooksellcancel', None))
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elif msg['type'] in (RPCMessageType.STATUS,
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RPCMessageType.STARTUP,
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RPCMessageType.WARNING):
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valuedict = whconfig.get('webhookstatus', None)
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else:
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raise NotImplementedError('Unknown message type: {}'.format(msg['type']))
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if not valuedict:
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logger.info("Message type '%s' not configured for webhooks", msg['type'])
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return
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payload = {key: value.format(**msg) for (key, value) in valuedict.items()}
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self._send_msg(payload)
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except KeyError as exc:
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logger.exception("Problem calling Webhook. Please check your webhook configuration. "
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"Exception: %s", exc)
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def _send_msg(self, payload: dict) -> None:
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"""do the actual call to the webhook"""
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success = False
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attempts = 0
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while not success and attempts <= self._retries:
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if attempts:
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if self._retry_delay:
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time.sleep(self._retry_delay)
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logger.info("Retrying webhook...")
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attempts += 1
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try:
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if self._format == 'form':
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response = post(self._url, data=payload)
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elif self._format == 'json':
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response = post(self._url, json=payload)
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elif self._format == 'raw':
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response = post(self._url, data=payload['data'],
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headers={'Content-Type': 'text/plain'})
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else:
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raise NotImplementedError('Unknown format: {}'.format(self._format))
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# Throw a RequestException if the post was not successful
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response.raise_for_status()
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success = True
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except RequestException as exc:
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logger.warning("Could not call webhook url. Exception: %s", exc)
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