error?() Instance Public methods Returns true iff the current severity level allows for the printing of ERROR messages.

error(progname = nil, &block) Instance Public methods Log an ERROR message. See info for more information.

debug?() Instance Public methods Returns true iff the current severity level allows for the printing of DEBUG messages.

debug(progname = nil, &block) Instance Public methods Log a DEBUG message. See info for more information.

datetime_format=(datetime_format) Instance Public methods Set date-time format. datetime_format A string suitable for passing to strftime.

datetime_format() Instance Public methods Returns the date format being used. See datetime_format=

close() Instance Public methods Close the logging device.

Logger#add(severity, message = nil, progname = nil) { ... } Instance Public methods Args severity Severity. Constants are defined in Logger namespace: DEBUG, INFO, WARN, ERROR, FATAL, or UNKNOWN. message The log message. A String or Exception. progname Program name string. Can be omitted. Treated as a message if no message and block are given. block Can be omitted. Called to get a message string if message is nil. Return true if successful, false otherwise. W

<<(msg) Instance Public methods Dump given message to the log device without any formatting. If no log device exists, return nil.

Logger.new(name, shift_age = 7, shift_size = 1048576)Logger.new(name, shift_age = 'weekly') Class Public methods Args logdev The log device. This is a filename (String) or IO object (typically STDOUT, STDERR, or an open file). shift_age Number of old log files to keep, or frequency of rotation (daily, weekly or monthly). shift_size Maximum logfile size (only applies when shift_age is a number). Description Create an instance.