Modified GridEngine's qstat command showing longer job names

qstat2.rb

#!/usr/bin/env ruby
# License: the MIT lincense.
# Copyright: MISHIMA, Hiroyuki hmishima at nagasaki-u.ac.jp, 2015

require 'rexml/document'

class Qstat2
  JOBNAME_WIDTH = 65

  def initialize
    @running = 0
    @pending = 0
  end

  def report(jname, state, slots)
    puts "#{jname.to_s.ljust(JOBNAME_WIDTH)} #{state.to_s.ljust(10)} #{slots.to_s.ljust(5)}"
  end

  def stat_count(stat)
    case
    when stat.to_s.include?("running")
      @running += 1
    when stat.to_s.include?("pending")
      @pending += 1
    end
  end

  def run
    doc = REXML::Document.new `qstat -xml`
    jinfo = doc.elements["//job_info"]

    puts "#{'Job_name'.ljust(JOBNAME_WIDTH)} #{'status'.ljust(10)} #{'slots'.ljust(5)}"
    jinfo.each_element("queue_info/job_list") do |job|
      jname = job.elements["JB_name"].text
      state = job.attribute("state")
      slots = job.elements["slots"].text
      report(jname, state, slots)
      stat_count(state)
    end

    jinfo.each_element("job_info/job_list") do |job|
      jname = job.elements["JB_name"].text
      state = job.attribute("state")
      slots = job.elements["slots"].text
      report(jname, state, slots)
      stat_count(state)
    end

  puts  
  puts "Running = #{@running}, Pending = #{@pending}"
  end
end

if $0 == __FILE__
  Qstat2.new.run
end