[Twisted-Python] Log rotates not as expected

[Pet]

On Fri, Jan 22, 2010 at 10:21 PM, Lucas Taylor <ltaylor.volks at gmail.com> wrote:
> On 1/22/10 3:15 AM, Pet wrote:
>> On Fri, Jan 22, 2010 at 12:13 AM, Lucas Taylor <ltaylor.volks at gmail.com> wrote:
>>> On 1/21/10 11:17 AM, Pet wrote:
>>>> On Thu, Jan 21, 2010 at 7:02 PM, Maarten ter Huurne
>>>> <maarten at treewalker.org> wrote:
>>>>> On Thursday 21 January 2010, Lucas Taylor wrote:
>>>>>
>>>>>> This can occur if you have multiple instances of logfile.LogFile setup
>>>>>> to manage the same file. The default rotation is 1MB, so maybe you have
>>>>>> another logfile.LogFile somewhere?
>>>>> Maybe twistd's log rotation?
>>>> Yes, may be. I start my daemon with
>>>> /usr/bin/twistd -y mydaemon.py --logfile=/var/log/my.log
>>>> --pidfile=/var/lock/mydaemon.pid
>>>>
>>>> How do I start twistd, so it doesn't produce own log file?
>>>>
>>>> Thanks for help!
>>>>
>>>> Pet
>>>>
>>> You can customize the application to use your logfile and observer:
>>> http://twistedmatrix.com/documents/current/core/howto/application.html#auto6
>>>
>>> e.g
>>> class MyLog(log.FileLogObserver):
>>>    def emit(self, logEntryDict):
>>>        log.FileLogObserver.timeFormat = '%Y-%m-%d %H:%M:%S'
>>>        log.FileLogObserver.emit(self, logEntryDict)
>>>
>>> maxLogSize = 5000000
>>> logFile = logfile.LogFile("my.log", "/var/log", rotateLength=maxLogSize,
>>> maxRotatedFiles=50)
>>>
>>> application = service.Application("myapp")
>>> application.setComponent(log.ILogObserver, MyLog(logFile).emit)
>>
>> Thanks for suggestion. I'll try it out as soon as I can. Currently I
>> do it in that way:
>>
>> application = service.Application("MyService")
>> myLogService = myLogService(LOG_NAME, LOG_DIR)
>> myLogService.setServiceParent(application)
>>
>>
>> what is the difference between creating service and setting
>> setServiceParent and setComponent?
>>
>> Pet
>>
> http://twistedmatrix.com/documents/current/core/howto/application.html
>
> The important aspect is the setComponent api. This is the part that lets
> you override the default logging behavior of twistd. It has nothing to
> do with the services that you register with the application using
> setServiceParent.
>
> If your MyLogService only does what you originally posted, you probably
> don't need all of that machinery. Using twistd will take care of
> starting and stopping logging for you.
>
> But, if you really want to use your service (say you want to force
> rotation on a restart), then you can do so. You just need to set the
> ILogObserver component on the application using your observer's emit
> function.
>
> e.g
>
> application = service.Application("MyService")
> myLogService = myLogService(LOG_NAME, LOG_DIR)
> myLogService.setServiceParent(application)
> application.setComponent(log.ILogObserver, myLogService.loclog.emit)
>
> Note that this won't work with your original MyLogService implementation
> without some reorganization (move logfile and loclog creation up to
> __init__)
>

Hi,

I'm getting an error while starting my service:

Failed to load application: 'module' object has no attribute 'ILogObserver'

I've imported log with

from twisted.python import log


Have no idea what is wrong...


Pet


>
> _______________________________________________
> Twisted-Python mailing list
> Twisted-Python at twistedmatrix.com
> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
>