migration_time.py

#!/usr/bin/python

import datetime
import logging
import requests

logging.basicConfig(level=logging.DEBUG)

LISK_HOST = 'testnet.lisk.io'
TARGET_HEIGHT = 5594490
SECONDS_IN_A_BLOCK = 10

def get_current_height():
   response = requests.get('https://{}/api/blocks/getHeight'.format(LISK_HOST))
   assert response.status_code == requests.codes.OK
   current_blockheight = response.json().get('height')
   logging.debug('Current height: %s', current_blockheight)
   return current_blockheight

def get_time_delta():
   seconds = (TARGET_HEIGHT - get_current_height()) * SECONDS_IN_A_BLOCK
   delta_seconds = datetime.timedelta(seconds=seconds)
   return delta_seconds

if __name__ == '__main__':
   NOW = datetime.datetime.now()
   CUTOFF_DATE = NOW + get_time_delta()
   print('Cutoff at {} +/- 10 seconds.'.format(CUTOFF_DATE))