blakeblackshear.frigate/frigate/log.py
Blake Blackshear 624c314335
Fast restart (#5378)
* dont wait so long for queues

* implement stop methods for comms

* set the detection events on exit and return early from processing

* handle the stop event in the broadcast threads

* short circuit the detection process exit code if it already exited

* some logging for stats thread

* just keep the log process alive 1 second after the last log message

* ensure the multiprocessing queues are emptied and closed

* Update frigate/log.py

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* Update frigate/log.py

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

* mypy fixes

---------

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>
2023-02-03 20:15:47 -06:00

98 lines
2.9 KiB
Python

# adapted from https://medium.com/@jonathonbao/python3-logging-with-multiprocessing-f51f460b8778
import logging
import threading
import os
import signal
import queue
import multiprocessing as mp
from multiprocessing.queues import Queue
from logging import handlers
from typing import Optional
from types import FrameType
from setproctitle import setproctitle
from typing import Deque, Optional
from types import FrameType
from collections import deque
from frigate.util import clean_camera_user_pass
def listener_configurer() -> None:
root = logging.getLogger()
console_handler = logging.StreamHandler()
formatter = logging.Formatter(
"[%(asctime)s] %(name)-30s %(levelname)-8s: %(message)s", "%Y-%m-%d %H:%M:%S"
)
console_handler.setFormatter(formatter)
root.addHandler(console_handler)
root.setLevel(logging.INFO)
def root_configurer(queue: Queue) -> None:
h = handlers.QueueHandler(queue)
root = logging.getLogger()
root.addHandler(h)
root.setLevel(logging.INFO)
def log_process(log_queue: Queue) -> None:
threading.current_thread().name = f"logger"
setproctitle("frigate.logger")
listener_configurer()
stop_event = mp.Event()
def receiveSignal(signalNumber: int, frame: Optional[FrameType]) -> None:
stop_event.set()
signal.signal(signal.SIGTERM, receiveSignal)
signal.signal(signal.SIGINT, receiveSignal)
while True:
try:
record = log_queue.get(timeout=1)
except (queue.Empty, KeyboardInterrupt):
if stop_event.is_set():
break
continue
logger = logging.getLogger(record.name)
logger.handle(record)
# based on https://codereview.stackexchange.com/a/17959
class LogPipe(threading.Thread):
def __init__(self, log_name: str):
"""Setup the object with a logger and start the thread"""
threading.Thread.__init__(self)
self.daemon = False
self.logger = logging.getLogger(log_name)
self.level = logging.ERROR
self.deque: Deque[str] = deque(maxlen=100)
self.fdRead, self.fdWrite = os.pipe()
self.pipeReader = os.fdopen(self.fdRead)
self.start()
def cleanup_log(self, log: str) -> str:
"""Cleanup the log line to remove sensitive info and string tokens."""
log = clean_camera_user_pass(log).strip("\n")
return log
def fileno(self) -> int:
"""Return the write file descriptor of the pipe"""
return self.fdWrite
def run(self) -> None:
"""Run the thread, logging everything."""
for line in iter(self.pipeReader.readline, ""):
self.deque.append(self.cleanup_log(line))
self.pipeReader.close()
def dump(self) -> None:
while len(self.deque) > 0:
self.logger.log(self.level, self.deque.popleft())
def close(self) -> None:
"""Close the write end of the pipe."""
os.close(self.fdWrite)