[Twisted-Python] twisted.logger and log filtering in twistd plugin

[Patryk Ściborek]

Hi Guys!

I'm using twisted.logger in my new app. I'm running it as a twistd plugin
and I don't know how to enable log message filtering. I know that twistd
still uses twisted.python.log but I have to disable debug messages somehow.
What's the best way to do that in my ServiceMaker?

Best regards,
Patryk

[Louis D. Burr]

Hi Patryk,

Post by Patryk Ściborek
Hi Guys!
I'm using twisted.logger in my new app. I'm running it as a twistd plugin and I don't know how to enable log message filtering. I know that twistd still uses twisted.python.log but I have to disable debug messages somehow. What's the best way to do that in my ServiceMaker?
Best regards,
Patryk

Best bet is to look into the —logger parameter which you can use to pass a custom logger to twistd.

Hope this helps,

Daniel
--
L. Daniel Burr
***@me.com
[phone]

[Patryk Ściborek]

Best bet is to look into the —logger parameter which you can use to pass a
custom logger to twistd.

Hi Daniel,

Thank you for your response. Logger option sets the name of the logger
factory which should create something which implements ILogObserver. But
still - it's part of the legacy api (twisted.python.log). I'm wondering
what's the right way to use new logging system here...

Best regards,
Patryk

[Louis D. Burr]

Hi Patryk,

Best bet is to look into the —logger parameter which you can use to pass a custom logger to twistd.
Hi Daniel,
Thank you for your response. Logger option sets the name of the logger factory which should create something which implements ILogObserver. But still - it's part of the legacy api (twisted.python.log). I'm wondering what's the right way to use new logging system here...

You can most definitely use the new logging system with the —logger parameter. Here is an untested example:

from twisted import logger

def myLogger():
outFile = open('/path/to/log.txt', 'w')
observer = logger.textFileLogObserver(outFile)
loglevel = logger.LogLevel.levelWithName('info')
predicate = logger.LogLevelFilterPredicate()
predicate.setLogLevelForNamespace("", loglevel)
filter = logger.FilteringLogObserver(observer, [predicate])

return filter
twistd [whatever] --logger=mypackage.mymodule.myLogger

Hope this helps,

Daniel
--
L. Daniel Burr
***@me.com
[phone]

[Werner Thie]

Post by Patryk Ściborek
Hi Guys!
I'm using twisted.logger in my new app. I'm running it as a twistd
plugin and I don't know how to enable log message filtering. I know that
twistd still uses twisted.python.log but I have to disable debug
messages somehow. What's the best way to do that in my ServiceMaker?
Best regards,
Patryk
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Hello Patryk

That's what I'm using in my .tac files:

from twisted.python import log
from twisted.python.log import ILogObserver, FileLogObserver

:
service = service.Application(myPackage)
service.setComponent(ILogObserver, FileLogObserver(LogFile('myLog.log',
'/var/log', rotateLength=10000)).emit)

Hope this helps, Werner