#! /usr/bin/python
#
# Copyright (c) 2017-2018 - Adjacent Link LLC, Bridgewater, New Jersey
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#
# Redistribution and use in source and binary forms, with or without
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import argparse
import os
import sys

from etce.field import Field
from etce.clientbuilder import ClientBuilder


description = """
A utility for checking connectivity to the hosts
in the provided HOSTFILE. Queries all of the HOSTFILE
hosts for a short distro description.
"""

parser = argparse.ArgumentParser(description=description,
                                 prog='etce-hello')

parser.add_argument('--port',
                    action='store',
                    type=int,
                    default=None,
                    help='''Connect to hosts using the specified port number.
                    Default: 22''')
parser.add_argument('--user',
                    action='store',
                    default=None,
                    help='''Connect to hosts as the specified user.
                    Default it the current user.''')
parser.add_argument('hostfile',
                    metavar='HOSTFILE',
                    help='''The ETCE Hostfile containing the hosts
                    to connect to.''')

args = parser.parse_args()

if not os.path.exists(args.hostfile) or not os.path.isfile(args.hostfile):
   print >>sys.stderr, 'Cannot find fieldfile "%s". Quitting' % args.hostfile
   exit(1)
   
hosts = Field(args.hostfile).allnodes()

client = ClientBuilder().build(hosts,
                               user=args.user,
                               port=args.port)

try:
   ret = client.execute('hello hello', hosts)

   responses = []

   for k in ret:
      responses.append((k, ret[k].retval['result']))

   for k,retval in  sorted(responses):
      print '[%s] return: %s' % (k, retval)

finally:
   client.close()
