text: #!/usr/bin/env python3
  
  #
  # Copyright (c) 2014-present, Facebook, Inc.
  #
  # This source code is licensed under the MIT license found in the
  # LICENSE file in the root directory of this source tree.
  #
  
  from __future__ import absolute_import, division, print_function, unicode_literals
  
  from builtins import object
  
  import tabulate
  from openr.clients import health_checker_client
  from openr.utils import ipnetwork
  
  
  class HealthCheckerCmd(object):
      def __init__(self, cli_opts):
          """ initialize the Health Checker client """
  
          self.client = health_checker_client.HealthCheckerClient(cli_opts)
  
  
  class PeekCmd(HealthCheckerCmd):
      def run(self):
          resp = self.client.peek()
          headers = [
              "Node",
              "IP Address",
              "Last Value Sent",
              "Last Ack From Node",
              "Last Ack To Node",
          ]
          rows = []
          for name, node in resp.nodeInfo.items():
              rows.append(
                  [
                      name,
                      ipnetwork.sprint_addr(node.ipAddress.addr),
                      node.lastValSent,
                      node.lastAckFromNode,
                      node.lastAckToNode,
                  ]
              )
  
          print()
          print(tabulate.tabulate(rows, headers=headers))
          print()
  