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Reread log config on SIGHUP

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When we are using a log_config file, reread it on SIGHUP.
This commit is contained in:
Richard van der Hoff 2017-03-09 22:54:52 +00:00
parent 45d173a59a
commit 9072a8c627
1 changed files with 19 additions and 10 deletions
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29
synapse/config/logger.py
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@ -153,14 +153,6 @@ def setup_logging(log_config=None, log_file=None, verbosity=None):
logger.info("Closing log file due to SIGHUP")
handler.doRollover()
logger.info("Opened new log file due to SIGHUP")
# TODO(paul): obviously this is a terrible mechanism for
# stealing SIGHUP, because it means no other part of synapse
# can use it instead. If we want to catch SIGHUP anywhere
# else as well, I'd suggest we find a nicer way to broadcast
# it around.
if getattr(signal, "SIGHUP"):
signal.signal(signal.SIGHUP, sighup)
else:
handler = logging.StreamHandler()
handler.setFormatter(formatter)
@ -169,8 +161,25 @@ def setup_logging(log_config=None, log_file=None, verbosity=None):
logger.addHandler(handler)
else:
with open(log_config, 'r') as f:
logging.config.dictConfig(yaml.load(f))
def load_log_config():
with open(log_config, 'r') as f:
logging.config.dictConfig(yaml.load(f))
def sighup(signum, stack):
# it might be better to use a file watcher or something for this.
logging.info("Reloading log config from %s due to SIGHUP",
log_config)
load_log_config()
load_log_config()
# TODO(paul): obviously this is a terrible mechanism for
# stealing SIGHUP, because it means no other part of synapse
# can use it instead. If we want to catch SIGHUP anywhere
# else as well, I'd suggest we find a nicer way to broadcast
# it around.
if getattr(signal, "SIGHUP"):
signal.signal(signal.SIGHUP, sighup)
# It's critical to point twisted's internal logging somewhere, otherwise it
# stacks up and leaks kup to 64K object;