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#!/usr/bin/env python3
# this module is part of undetected_chromedriver
import asyncio
import json
import logging
import threading
logger = logging.getLogger(__name__)
class Reactor(threading.Thread):
def __init__(self, driver: "Chrome"):
super().__init__()
self.driver = driver
self.loop = asyncio.new_event_loop()
self.lock = threading.Lock()
self.event = threading.Event()
self.daemon = True
self.handlers = {}
def add_event_handler(self, method_name, callback: callable):
"""
Parameters
----------
event_name: str
example "Network.responseReceived"
callback: callable
callable which accepts 1 parameter: the message object dictionary
Returns
-------
"""
with self.lock:
self.handlers[method_name.lower()] = callback
@property
def running(self):
return not self.event.is_set()
def run(self):
try:
asyncio.set_event_loop(self.loop)
self.loop.run_until_complete(self.listen())
except Exception as e:
logger.warning("Reactor.run() => %s", e)
async def _wait_service_started(self):
while True:
with self.lock:
if (
getattr(self.driver, "service", None)
and getattr(self.driver.service, "process", None)
and self.driver.service.process.poll()
):
await asyncio.sleep(self.driver._delay or 0.25)
else:
break
async def listen(self):
while self.running:
await self._wait_service_started()
await asyncio.sleep(1)
try:
with self.lock:
log_entries = self.driver.get_log("performance")
for entry in log_entries:
try:
obj_serialized: str = entry.get("message")
obj = json.loads(obj_serialized)
message = obj.get("message")
method = message.get("method")
if "*" in self.handlers:
await self.loop.run_in_executor(
None, self.handlers["*"], message
)
elif method.lower() in self.handlers:
await self.loop.run_in_executor(
None, self.handlers[method.lower()], message
)
# print(type(message), message)
except Exception as e:
raise e from None
except Exception as e:
if "invalid session id" in str(e):
pass
else:
logging.debug("exception ignored :", e)
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