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Path: /proc/self/root/opt/chef/embedded/lib/ruby/gems/2.7.0/gems/net-ssh-6.1.0/lib/net/ssh/

Viewing File: loggable.rb

module Net 
  module SSH

    # A simple module to make logging easier to deal with. It assumes that the
    # logger instance (if not nil) quacks like a Logger object (in Ruby's
    # standard library). Although used primarily internally by Net::SSH, it
    # can easily be used to add Net::SSH-like logging to your own programs.
    #
    #   class MyClass
    #     include Net::SSH::Loggable
    #   end
    #
    #   Net::SSH.start(...) do |ssh|
    #     obj = MyClass.new
    #     obj.logger = ssh.logger
    #     ...
    #   end
    module Loggable
      # The logger instance that will be used to log messages. If nil, nothing
      # will be logged.
      attr_accessor :logger
  
      # Displays the result of yielding if the log level is Logger::DEBUG or
      # greater.
      def debug
        logger.add(Logger::DEBUG, nil, facility) { yield } if logger && logger.debug?
      end
  
      # Displays the result of yielding if the log level is Logger::INFO or
      # greater.
      def info
        logger.add(Logger::INFO, nil, facility) { yield } if logger && logger.info?
      end
  
      # Displays the result of yielding if the log level is Logger::WARN or
      # greater. (Called lwarn to avoid shadowing with Kernel#warn.)
      def lwarn
        logger.add(Logger::WARN, nil, facility) { yield } if logger && logger.warn?
      end
  
      # Displays the result of yielding if the log level is Logger:ERROR or
      # greater.
      def error
        logger.add(Logger::ERROR, nil, facility) { yield } if logger && logger.error?
      end
  
      # Displays the result of yielding if the log level is Logger::FATAL or
      # greater.
      def fatal
        logger.add(Logger::FATAL, nil, facility) { yield } if logger && logger.fatal?
      end
  
      private
  
      # Sets the "facility" value, used for reporting where a log message
      # originates. It defaults to the name of class with the object_id
      # appended.
      def facility
        @facility ||= self.class.to_s.gsub(/::/, ".").gsub(/([a-z])([A-Z])/, "\\1_\\2").downcase + "[%x]" % object_id
      end
    end
  end
end