Method: CCBuilder::ONEClient#list

Defined in:
lib/ONEClient.rb

#list ⇒ Object

API-method list



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
 
# File 'lib/ONEClient.rb', line 39

def list
  n = 3
  vmpool = OpenNebula::VirtualMachinePool.new(@one_client, -1)
  result = vmpool.info
  vms = Array.new 
  queue = Queue.new # queue to hold ids which need to be looked up
  threads = Array.new
  n.times do |i| # Launch n threads which do the lookups#        
    threads[i] = Thread.new do 
      id = queue.pop
      until id == 0
        vm = OpenNebula::VirtualMachine.new_with_id(id, @one_client)
        vm.info
        ip = vm.template_str.scan(/IP=(\d+\.\d+\.\d+\.\d+),/)[0][0]
        status = vm.status
        vmhost = vm["HISTORY/HOSTNAME"]
        host = Resolv::getname(ip)
        Thread.pass
        puts "VM ##{id} with ip #{ip} resolved to name #{host}" if @verbose
        vms << { 'id' => id, 'ip' => ip, 'host' => host, 'status' => status, 'vmhost' => vmhost }
        STDOUT.flush
        id = queue.pop
      end 
    end
  end
  vmpool.map do |vm|
    queue << vm.id
  end
  n.times { queue << 0 } # send 0 to terminate threads 
  n.times { |i| threads[i].join } # wait until threads finished
  return vms
ensure
  n.times { |i| threads[i].terminate } 
end