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DEV: Allow a list of log handlers.

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This commit is contained in:
Scott Sanderson
2015-02-23 09:51:28 -05:00
parent 17e4f2f2d1
commit 2a39fbe00a
1 changed files with 15 additions and 20 deletions
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35
jupyterhub/app.py
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@@ -369,37 +369,32 @@ class JupyterHub(Application):
extra_log_file = Unicode(
"",
config=True,
help="""Set a FileHandler on this file.
Ignored if extra_log_handler is explicitly set in config file.
"""
help="Set a logging.FileHandler on this file."
)
extra_log_handler = Instance(
klass=logging.Handler,
allow_none=True,
extra_log_handlers = List(
Instance(logging.Handler),
config=True,
help="Extra handler to set on JupyterHub logger.",
help="Extra log handlers to set on JupyterHub logger",
)
def _extra_log_handler_default(self):
if self.extra_log_file:
return logging.FileHandler(self.extra_log_file)
return None
def init_logging(self):
# This prevents double log messages because tornado use a root logger that
# self.log is a child of. The logging module dipatches log messages to a log
# and all of its ancenstors until propagate is set to False.
self.log.propagate = False
if self.extra_log_handler:
self.extra_log_handler.setFormatter(
self._log_formatter_cls(
fmt=self.log_format,
datefmt=self.log_datefmt,
),
if self.extra_log_file:
self.extra_log_handlers.append(
logging.FileHandler(self.extra_log_file)
)
self.log.addHandler(self.extra_log_handler)
_formatter = self._log_formatter_cls(
fmt=self.log_format,
datefmt=self.log_datefmt,
)
for handler in self.extra_log_handlers:
handler.setFormatter(_formatter)
self.log.addHandler(handler)
# hook up tornado 3's loggers to our app handlers
for log in (app_log, access_log, gen_log):