old_contents: 
  from oslo.config import cfg
  from voltclient.v1 import client
  
  from vmthunder.singleton import SingleTon
  
  master_opts = [
      cfg.StrOpt('master_ip',
                 default='10.107.14.170',
                 help='Master\'s ip to provide Voltclient service'),
      cfg.StrOpt('master_port',
                 default='7447',
                 help='Master\'s port to provide Voltclient service'),
  ]
  CONF = cfg.CONF
  CONF.register_opts(master_opts)
  
  @SingleTon
  class VoltClient(client.Client):
      def __init__(self):
          client.Clien.__init__(self, 'http://%s:%s' % (CONF.master_ip, CONF.master_ip))
  
  
  volt_client = VoltClient()
  
  
  def login(session_name, peer_id, host, port, iqn, lun):
      return volt_client.volumes.login(session_name, peer_id, host, port, iqn, lun)
  
  
  def get(session_name, host):
      return volt_client.volumes.get(session_name, host)
  
  
  def logout(session_name, peer_id):
      return volt_client.volumes.logout(session_name, peer_id)
new_contents: 
  from oslo.config import cfg
  from voltclient.v1 import client
  
  from vmthunder.singleton import SingleTon
  
  master_opts = [
      cfg.StrOpt('master_ip',
                 default='10.107.14.170',
                 help='Master\'s ip to provide Voltclient service'),
      cfg.StrOpt('master_port',
                 default='7447',
                 help='Master\'s port to provide Voltclient service'),
  ]
  CONF = cfg.CONF
  CONF.register_opts(master_opts)
  
  @SingleTon
  class VoltClient(client.Client):
      def __init__(self):
          client.Client.__init__(self, 'http://%s:%s' % (CONF.master_ip, CONF.master_ip))
  
  
  volt_client = VoltClient()
  
  
  def login(session_name, peer_id, host, port, iqn, lun):
      return volt_client.volumes.login(session_name, peer_id, host, port, iqn, lun)
  
  
  def get(session_name, host):
      return volt_client.volumes.get(session_name, host)
  
  
  def logout(session_name, peer_id):
      return volt_client.volumes.logout(session_name, peer_id)
subject: fix bug