Custom logger

# lib/logger/custom_logger
require 'singleton'

class CustomLogger < Logger
  include Singleton
  
  def initialize
    super(Rails.root.join(&#039;log/custom_logger.log&#039;))
    self.formatter = formatter()
    self
  end

  def formatter
    Proc.new{|severity, time, progname, msg|
      formatted_severity = sprintf(&quot;%-5s&quot;,severity.to_s)
      formatted_time = time.strftime(&quot;%d-%m-%Y %H:%M:%S&quot;)
      &quot;[#{formatted_severity} #{formatted_time} #{$$}] #{msg.to_s.strip}\n&quot;
    }
  end

  class << self
    delegate :error, :debug, :fatal, :info, :warn, :add, :log, :to =&gt; :instance
  end

end

CustomLogger.info("text to log")
CustomLogger.warn("text to log")
CustomLogger.debug("text to log")
CustomLogger.fatal("text to log")
CustomLogger.error("text to log")

[INFO  04-04-2015 14:12:57 18491] Processing data</pre>