Adding to the Ruby Logger

I’ve been working on some new code at work for a new install. Unfortunately, I’m unable to use the new framework just yet (mainly because it’s not complete), and I needed a workaround for the Ruby Logger to be able to accept .trace calls (we usually use Log4r. Here’s my workaround:

require 'logger'

# Redefine the Logger to allow for TRACE calls.
class Logger
  module Severity
    TRACE = -1
  end
  
  def trace?; @level <= TRACE; end
  
  def trace(progname = nil, &block)
    add(TRACE, nil, progname, &block)
  end
  
  NEW_SEV_LABEL = %w(TRACE DEBUG INFO WARN ERROR FATAL ANY)
  
  def format_severity(severity)
    NEW_SEV_LABEL[severity+1] || 'ANY'
  end
end

Usage example:

log = Logger.new
log.level = Logger::TRACE
log.trace 'TRACE test message.'

> T, [2006-06-22T20:07:56.244922 #3053] TRACE -- : TRACE test message.