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author | Ross Brattain <ross.b.brattain@intel.com> | 2016-11-25 14:21:37 -0800 |
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committer | Ross Brattain <ross.b.brattain@intel.com> | 2016-11-30 16:48:34 -0800 |
commit | 4630e877d70ba453ac0d88e226a66a6f1efc7608 (patch) | |
tree | 644b8c9409c048d9cd04eacb1c19c59000612f61 /tests/opnfv/test_cases/opnfv_yardstick_tc002.yaml | |
parent | 462f25c8e950110a1624909d4f79ef4219005ba2 (diff) |
switch logging to proper usage
The logging methods do string interpolation themselves
From the reference:
https://docs.python.org/2/library/logging.html#logging.Logger.debug
Logger.debug(msg, *args, **kwargs)
Logs a message with level DEBUG on this logger. The msg is the message format string, and the args are the arguments which are merged into msg using the string formatting operator. (Note that this means that you can use keywords in the format string, together with a single dictionary argument.)
There are two keyword arguments in kwargs which are inspected: exc_info which, if it does not evaluate as false, causes exception information to be added to the logging message. If an exception tuple (in the format returned by sys.exc_info()) is provided, it is used; otherwise, sys.exc_info() is called to get the exception informatio
The reason logging does string interpolation itselfs is to implement deferred interpolation.
String interpolation involves evaluating arguments, so it can introduce significant computation. The logging module tries to be smart about deferring interpolation until the last possible moment.
The logging methods check isEnabledFor for the log level and won't interpolate if the level is not enabled.
https://github.com/python/cpython/blob/2.7/Lib/logging/__init__.py#L1178
def warning(self, msg, *args, **kwargs):
if self.isEnabledFor(WARNING):
self._log(WARNING, msg, args, **kwargs)
logging actually waits to interpolate the string in LogRecord.getMessage()
https://github.com/python/cpython/blob/2.7/Lib/logging/__init__.py#L328
if self.args:
msg = msg % self.args
Change-Id: Ie09efe0a66881e19bd8119caa376075e605627a2
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>
Diffstat (limited to 'tests/opnfv/test_cases/opnfv_yardstick_tc002.yaml')
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