Python standard logger instead of twistd logger

Question

I'm trying to daemonize a simple Twisted application which uses Python2.7 standard library logger.

Here is the setup :

Python application file (run.py) :

import logging
import logging.config
from twisted.internet import reactor

import conf

def main():
    logging.config.dictConfig(conf.LOGGERCONF)
    logger = logging.getLogger(conf.LOGGERNAME)
    logger.debug('Starting the reactor...')
    reactor.callWhenRunning(lambda: logger.info('Reactor started'))
    reactor.run()

main()

Twistd application file (daemon.tac) :

from twisted.application.service import Application
from twisted.python.log import PythonLoggingObserver
from twisted.python.log import ILogObserver

application = Application('run')
application.setComponent(ILogObserver, PythonLoggingObserver().emit)

Log observer file (daemonlog.py) :

from twisted.python import log

def logger():
    return log.PythonLoggingObserver().emit

Launching the application with :

python run.py

everything works fine and log messages are correctly filed and displayed (according to the logger configuration).

Trying to daemonize with :

twistd -y daemon.tac --logger=daemonlog.logger

The daemon starts fine, I can see the twistd.pid file created (with the correct pid number), the daemon running in the ps -ef command results, but I can't see any log files (neither twistd.log or log file as created by the application when it is started normally without twistd).

In the end, I would like to use only Python's standard library logger and kind of "by-passing" twistd logger.

I'm probably missing something or misundertsanding and any help would be appreciated.

Python standard logger instead of twistd logger

0 Answers0