Logging
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The logger
is automatically mixed into all driver classes and has the usual logger levels:
debug
: use debug often for verbose output - not saved to log files by default
info
: anything you are interested in seeing in the log file
warn
: something might be wrong, possibly worth investigation.
error
: something went wrong, definitely worth investigation
fatal
: something that should never go wrong, went wrong. Requires immediate investigation / resolution
If text being passed to the logger requires some string manipulation or other processor intensive operation, it is worth performing this work in a in case the result is not recorded - this is preferred with debug statements as they are discarded when nobody is watching.
There is also a handy helper method for formatting errors: