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Use the new twisted logging framework.

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Hopefully adding an observer to the new framework will avoid a memory
leak https://twistedmatrix.com/trac/ticket/8164
This commit is contained in:
Mark Haines 2016-12-30 11:05:37 +00:00
parent f023be9293
commit 822cb39dfa
1 changed files with 13 additions and 3 deletions
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16
synapse/config/logger.py
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@ -15,7 +15,7 @@
from ._base import Config
from synapse.util.logcontext import LoggingContextFilter
from twisted.python.log import PythonLoggingObserver
from twisted.logger import globalLogBeginner, STDLibLogObserver
import logging
import logging.config
import yaml
@ -180,5 +180,15 @@ def setup_logging(log_config=None, log_file=None, verbosity=None):
with open(log_config, 'r') as f:
logging.config.dictConfig(yaml.load(f))
observer = PythonLoggingObserver()
observer.start()
# It's critical to point twisted's internal logging somewhere, otherwise it
# stacks up and leaks kup to 64K object;
# see: https://twistedmatrix.com/trac/ticket/8164
#
# Routing to the python logging framework could be a performance problem if
# the handlers blocked for a long time as python.logging is a blocking API
# see https://twistedmatrix.com/documents/current/core/howto/logger.html
# filed as https://github.com/matrix-org/synapse/issues/1727
#
# However this may not be too much of a problem if we are just writing to a file.
observer = STDLibLogObserver()
globalLogBeginner.beginLoggingTo([observer])