I have an app I'm working on, and until this point it's been done utilizing a .tac file. Recent changes in requirements are encouraging a change to use the Twisted plugin system instead. This seems clear for the most part, but I'm unsure about the logging.

Specifically, in the .tac version, I'm using this:

lf = logfile.DailyLogFile("my.log", ".") logname = "testlog" configure_python_logging(lf, logname) application.setComponent(log.ILogObserver, log.PythonLoggingObserver(logname).emit)

However, in the plugin version, I'm not sure how to proceed since I don't have an application object. I can't seem to find any documentation for configuring logging with plugins, either. Is there a way to make this work?

Just in case, I've pasted a complete working example of the .tac code below, along with the partially complete plugin module.

- Paul Goins

####################################

########################### # log_example/logtest.tac # ########################### # -*- coding: utf-8 -*-

from twisted.application import service from twisted.internet import reactor from twisted.web import server as webserver

from logtest import log

application = service.Application("myapp") log.init_logger_8dot2(application)

service = log.MyService() service.setServiceParent(application)

################################### # log_example/logtest/__init__.py # ###################################

############################## # log_example/logtest/log.py # ##############################

# -*- coding: utf-8 -*-

from twisted.application.service import Service from twisted.internet import reactor from twisted.python import log, logfile import logging

def init_logger_8dot2(application): lf = logfile.DailyLogFile("my.log", ".") logname = "testlog" configure_python_logging(lf, logname) application.setComponent(log.ILogObserver, log.PythonLoggingObserver(logname).emit)

def configure_python_logging(file_obj, log_name): logging.basicConfig(stream=file_obj, format="[%(asctime)s] %(levelname)s: %(message)s", datefmt="%Y-%m-%d %H:%M:%S") logger = logging.getLogger(log_name) logger.setLevel(logging.INFO)

class MyService(Service):

def startService(self): reactor.callLater(2, reactor.stop)

############################################# # log_example/twisted/plugins/log_plugin.py # #############################################

# -*- coding: utf-8 -*-

from zope.interface import implements from twisted.python import usage from twisted.plugin import IPlugin from twisted.application.service import IServiceMaker

from logtest.log import MyService

class Options(usage.Options): optParamaters = [[]]

class MyServiceMaker(object): implements(IServiceMaker, IPlugin) tapname = "logtest" description = "Twisted plugin log tester" options = Options

def makeService(self, options): # set up servers and stuff here return MyService()

serviceMaker = MyServiceMaker()