gistfile1.txt

  require "logger"
  
  module MyLogger
    def logger
      @logger ||= setup_logger
    end
  
    def setup_logger
      log = Logging.logger["test"]
      log.level = :info
      log.add_appenders(
        Logging.appenders.stdout,
        Logging.appenders.file("test.log")
      )
      log
    end
  
    def info(message)
      logger.info(message)
    end
  end
  
  module Test
    extend MyLogger
  
    def self.hello
      MyLogger.info "hello"
    end
  end
  
  Test.hello