Class: Flare::Tools::Cli::Ping

Inherits:
SubCommand show all
Includes:
Util::Conversion, Util::Logging
Defined in:
lib/flare/tools/cli/ping.rb

Constant Summary

Constants inherited from SubCommand

SubCommand::S_NG, SubCommand::S_OK

Constants included from Util::Interruption

Util::Interruption::InterruptionTargets

Constants included from Util::Constant

Util::Constant::DefalutBwlimit, Util::Constant::DefaultIndexServerName, Util::Constant::DefaultIndexServerPort, Util::Constant::DefaultNodePort, Util::Constant::DefaultTimeout, Util::Constant::STATUS_NG, Util::Constant::STATUS_OK

Instance Attribute Summary

Attributes included from Option

#optp

Instance Method Summary collapse

Methods included from Util::Logging

#debug, #error, #fatal, #info, logger, #puts, set_logger, #trace, #warn

Methods included from Util::Conversion

#short_desc_of_second

Methods inherited from SubCommand

desc, #execute_subcommand, myname, #myname, to_s, to_sym, usage

Methods included from Util::Interruption

included, #initialize_interruption, #interrupt, #interrupt_, interrupt_all, #interrupted?, #interruptible, #interruptible?

Methods included from Option

#option_init, #parse_options, #set_option_dry_run, #set_option_force, #set_option_global, #set_option_index_server

Constructor Details

#initialize ⇒ Ping

Returns a new instance of Ping.



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# File 'lib/flare/tools/cli/ping.rb', line 28

def initialize
  super
  @wait = false
end

Instance Method Details

#execute(config, args) ⇒ Object 



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# File 'lib/flare/tools/cli/ping.rb', line 33

def execute(config, args)

  hosts = args.map do |arg|
    hostname, port, rest = arg.split(':', 3)
    if !rest.nil? || hostname.nil? || hostname.empty? || port.nil? || port.empty?
      error "invalid argument '#{arg}'. it must be hostname:port."
      return S_NG
    end
    begin
      ipaddr = Resolv.getaddress(hostname)
    rescue Resolv::ResolvError
      error "unknown host '#{hostname}'"
      return S_NG
    end
    [hostname, port]
  end

  hosts.each do |hostname, port|
    resp = nil
    until resp
      begin
        debug "trying..."
        interruptible do
          Flare::Tools::Stats.open(hostname, port, @timeout) do |s|
            resp = s.ping
          end
        end
      rescue IOError
        return S_NG
      rescue
        unless @wait
          puts "#{hostname}:#{port} is down"
          return S_NG
        end
        interruptible {sleep 1}
      end
    end
  end

  puts "alive"
  S_OK
end

#setup ⇒ Object 



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# File 'lib/flare/tools/cli/ping.rb', line 23

def setup
  super
  @optp.on('--wait',            "wait for OK responses from nodes") {@wait = true}
end