old_contents: #!/usr/bin/python
  import pymongo
  import bson
  import time
  import sys
  from mongo_connector import util
  
  mongo_url = 'mongodb://localhost:27017'
  if len(sys.argv) == 1:
  	print "First argument is mongodb connection string, i.e. localhost:27017. Assuming localhost:27017..."
  if len(sys.argv) >= 2:
  	mongo_url = sys.argv[1]	
  
  
  client = pymongo.MongoClient(mongo_url)
  rs_name = client.admin.command('ismaster')['setName']
  print 'Found Replica Set name: {}'.format(str(rs_name))
  
  print 'Now checking for the latest oplog entry...'
  oplog = client.local.oplog.rs
  last_oplog = oplog.find().sort('$natural', pymongo.DESCENDING).limit(-1).next()
  print 'Found the last oplog ts: {}'.format(str(last_oplog['ts']))
  last_ts = util.bson_ts_to_long(last_oplog['ts'])
  out_str='["{}", {}]'.format(str(rs_name), str(last_ts) ) 
  
  print 'Writing all to file oplog.timestamp.last in the format required for mongo-connector'
  f = open('./oplog.timestamp.last', 'w')
  f.write(out_str)
  f.close()
  print 'All done!'
  
new_contents: #!/usr/bin/python
  import pymongo
  import bson
  import time
  import sys
  from mongo_connector import util
  
  mongo_url = 'mongodb://localhost:27017'
  if len(sys.argv) == 1:
  	print "First argument is mongodb connection string, i.e. localhost:27017. Assuming localhost:27017..."
  if len(sys.argv) >= 2:
  	mongo_url = sys.argv[1]	
  
  
  client = pymongo.MongoClient(mongo_url)
  rs_name = client.admin.command('ismaster')['setName']
  print('Found Replica Set name: {}'.format(str(rs_name)))
  
  print('Now checking for the latest oplog entry...')
  oplog = client.local.oplog.rs
  last_oplog = oplog.find().sort('$natural', pymongo.DESCENDING).limit(-1).next()
  print('Found the last oplog ts: {}'.format(str(last_oplog['ts'])))
  last_ts = util.bson_ts_to_long(last_oplog['ts'])
  out_str='["{}", {}]'.format(str(rs_name), str(last_ts) ) 
  
  print('Writing all to file oplog.timestamp.last in the format required for mongo-connector')
  f = open('./oplog.timestamp.last', 'w')
  f.write(out_str)
  f.close()
  print('All done!')
  
subject: Update for compatibility with python 3