Contents

module NagiosPlugin
  class Plugin
    class << self

      # Create new instance and run it.
      def run(*args)
        self.new(*args).run
      end

    private

      # @macro [status] message
      #   @method $1(message)
      #   Raise $1 StatusError with message
      #   @param [String] message the exeption message
      def make(status)
        define_method(status) do |message|
          raise StatusError.new(status, message)
        end
      end
    end

    make :ok
    make :warning
    make :critical
    make :unknown

    # Overwrite this check method and call a status method within.
    def check
      unknown 'please overwrite the `check` method in your class'
    end

   # Run check and return result in a nagios-compatible format.
   #
   # It will...
   # - execute your check method
   # - output the result in a nagios-compatible format (SERVICE STATUS: Message)
   # - exit according to the status
   def run
     check
   rescue StatusError => e
   rescue => e
     e = StatusError.new(:unknown, ([e.to_s, nil] + e.backtrace).join("\n"))
   else
     e = StatusError.new(:unknown, 'no status method was called')
   ensure
     puts [self.class.name.upcase, e.to_s].join(' ')
     exit e.to_i
   end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
nagiosplugin-1.1.2	lib/nagiosplugin/plugin.rb
nagiosplugin-1.1.1	lib/nagiosplugin/plugin.rb
nagiosplugin-1.1.0	lib/nagiosplugin/plugin.rb