stable/freqtrade/rpc/webhook.py

114 lines
4.3 KiB
Python

"""
This module manages webhook communication
"""
import logging
import time
from typing import Any, Dict
from requests import RequestException, post
from freqtrade.constants import Config
from freqtrade.enums import RPCMessageType
from freqtrade.rpc import RPC, RPCHandler
logger = logging.getLogger(__name__)
logger.debug('Included module rpc.webhook ...')
class Webhook(RPCHandler):
""" This class handles all webhook communication """
def __init__(self, rpc: RPC, config: Config) -> None:
"""
Init the Webhook class, and init the super class RPCHandler
:param rpc: instance of RPC Helper class
:param config: Configuration object
:return: None
"""
super().__init__(rpc, config)
self._url = self._config['webhook']['url']
self._format = self._config['webhook'].get('format', 'form')
self._retries = self._config['webhook'].get('retries', 0)
self._retry_delay = self._config['webhook'].get('retry_delay', 0.1)
def cleanup(self) -> None:
"""
Cleanup pending module resources.
This will do nothing for webhooks, they will simply not be called anymore
"""
pass
def send_msg(self, msg: Dict[str, Any]) -> None:
""" Send a message to telegram channel """
try:
whconfig = self._config['webhook']
if msg['type'] in [RPCMessageType.ENTRY]:
valuedict = whconfig.get('webhookentry')
elif msg['type'] in [RPCMessageType.ENTRY_CANCEL]:
valuedict = whconfig.get('webhookentrycancel')
elif msg['type'] in [RPCMessageType.ENTRY_FILL]:
valuedict = whconfig.get('webhookentryfill')
elif msg['type'] == RPCMessageType.EXIT:
valuedict = whconfig.get('webhookexit')
elif msg['type'] == RPCMessageType.EXIT_FILL:
valuedict = whconfig.get('webhookexitfill')
elif msg['type'] == RPCMessageType.EXIT_CANCEL:
valuedict = whconfig.get('webhookexitcancel')
elif msg['type'] in (RPCMessageType.STATUS,
RPCMessageType.STARTUP,
RPCMessageType.WARNING):
valuedict = whconfig.get('webhookstatus')
elif msg['type'] in (
RPCMessageType.PROTECTION_TRIGGER,
RPCMessageType.PROTECTION_TRIGGER_GLOBAL,
RPCMessageType.WHITELIST,
RPCMessageType.ANALYZED_DF,
RPCMessageType.STRATEGY_MSG):
# Don't fail for non-implemented types
return
else:
raise NotImplementedError('Unknown message type: {}'.format(msg['type']))
if not valuedict:
logger.info("Message type '%s' not configured for webhooks", msg['type'])
return
payload = {key: value.format(**msg) for (key, value) in valuedict.items()}
self._send_msg(payload)
except KeyError as exc:
logger.exception("Problem calling Webhook. Please check your webhook configuration. "
"Exception: %s", exc)
def _send_msg(self, payload: dict) -> None:
"""do the actual call to the webhook"""
success = False
attempts = 0
while not success and attempts <= self._retries:
if attempts:
if self._retry_delay:
time.sleep(self._retry_delay)
logger.info("Retrying webhook...")
attempts += 1
try:
if self._format == 'form':
response = post(self._url, data=payload)
elif self._format == 'json':
response = post(self._url, json=payload)
elif self._format == 'raw':
response = post(self._url, data=payload['data'],
headers={'Content-Type': 'text/plain'})
else:
raise NotImplementedError('Unknown format: {}'.format(self._format))
# Throw a RequestException if the post was not successful
response.raise_for_status()
success = True
except RequestException as exc:
logger.warning("Could not call webhook url. Exception: %s", exc)