Rails 3 logs with severity and PIDs

better_logger.rb

# You must require this file in application.rb, above the Application
# definition, for this to work. For example:
#
# # Syslog-like Rails logs
# if Rails.env.production?
# require File.expand_path('../../lib/better_logger', __FILE__)
# end
#
# module MyApp
# class Application < Rails::Application

require 'active_support/buffered_logger'

module BetterLogger

  SEVERITIES = ActiveSupport::BufferedLogger::Severity.constants.sort_by{|c| ActiveSupport::BufferedLogger::Severity.const_get(c) }

  def add(severity, message = nil, progname = nil, &block)
    return if @level > severity
    message = (message || (block && block.call) || progname).to_s
    # Prepend pid and severity to the written message
    message = "[%s] %-5.5s %s" % [$$, SEVERITIES[severity], message.gsub(/^\n+/, '')]

    super
  end

  class Railtie < ::Rails::Railtie
    # Extend the actual Rails logger with our module
    initializer :initialize_better_logger, :after => :initialize_logger do |app|
      Rails.logger.extend(BetterLogger)
    end
  end
end