Class: HomeQ::Base::Options::Options

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/homeq/base/options.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Options

Returns a new instance of Options.



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# File 'lib/homeq/base/options.rb', line 49

def initialize
  @options               = OpenStruct.new
  @options.log_level     = false
  @options.config_file   = File.join(HOMEQ_APP_ROOT,
                                     '/config/homeq.cfg')
  @options.queue_name    = nil
  @options.cp_port       = nil
  @options.foreground    = false
  @options.pid_file      = false
  @options.log_file      = false
  @options.dump_topology = false
  @options.enable_debugging = false
  
  @parser = OptionParser.new do |opts|
    opts.banner = "Usage: #{File.basename($0)} [options]"
    
    opts.separator ""
    opts.separator "HOMEQ options:"

    # Mandatory argument.
    opts.on("-c", "--config-file FILE",
            "Configuration file; defaults to \n\
                             #{@options.config_file}") { |c|
      @options.config_file = c
    }
    opts.on("-q", "--queuename NAME",
            "This process's queue name") { |q|
      @options.queue_name = q
    }
    opts.on("-p", "--port PORT",
            Integer,
            "Control port to listen on.") { |p|
      @options.cp_port = p
    }
    opts.on("-l", "--[no-]log-file LOGFILE",
            "Log to this file; defaults to \n\
                             #{@options.log_file}") { |o|
      @options.log_file = o
    }
    opts.on("-P", "--pid-file FILE",
            "Write pid to this file;\n \
                            defaults to " +
            "/var/run/hq_<queuename>.pid") { |p|
      @options.pid_file = p
    }

    # Boolean switches
    
    opts.on("-v",
            "--[no-]verbose",
            "Run verbosely. Additively -vvv") do |v|
      @options.log_level = 0 unless @options.log_level
      @options.log_level += 1
    end
    opts.on("-f", "--[no-]foreground", "Run in the foreground") do |o|
      @options.foreground = o
    end
    opts.on("-T", "--print-topology",
            "Using command line options and config file,\n \
                            dump a topology in YAML format.") do |o|
      @options.dump_topology = o
    end
    opts.on("-E", "--print-homeq-env",
            "Using command line options and config file,\n \
                            display currently set HOMEQ_ENV.") do |o|
      @options.dump_env = o
    end
    opts.on("-D", "--enable-debugging",
            "Enable rdebug debugging") do |o|
      @options.enable_debugging = o
    end

    opts.separator ""
    opts.separator "Common options:"

    opts.on("-h", "--help", "Show this message") do
      puts opts
      exit
    end

    # Another typical switch to print the version.
    opts.on("--version", "Show version") do
      puts OptionParser::Version.join('.')
      Kernel::exit
    end
  end
end

Instance Attribute Details

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/homeq/base/options.rb', line 46

def options
  @options
end

#parser ⇒ Object

Returns the value of attribute parser.



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# File 'lib/homeq/base/options.rb', line 47

def parser
  @parser
end

Instance Method Details

#parse ⇒ Object

Return a structure describing the options.



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# File 'lib/homeq/base/options.rb', line 140

def parse
  # The options specified on the command line will be
  # collected in *options*.  We set default values here.

  begin
    @parser.parse!(ARGV)
  rescue OptionParser::ParseError => pe
    puts @parser
    raise
  end

  # Add our cute little override method
  class << @options
    def set_configuration(config)
      @table.each { |k,v|
        if config.respond_to?(k) && v
          config.send(k, v)
        end
      }
    end
  end
  
  @options
end