Logging
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 defaultinfo: anything you are interested in seeing in the log filewarn: something might be wrong, possibly worth investigation.error: something went wrong, definitely worth investigationfatal: 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 block in case the result is not recorded - this is preferred with debug statements as they are discarded when nobody is watching.
def received(data, resolve, command)
logger.debug {
cmd = String.new("Device sent 0x#{byte_to_hex(data)}")
cmd << " for command #{command[:name]}" if command
cmd # return the text to be displayed if we are debugging
}
end
There is also a handy helper method for formatting errors:
begin
raise 'whoa!'
rescue => e
logger.print_error e, 'optional additional description of error'
end
Last modified 4yr ago