old_contents: """ Utility functions
  """
  import random
  import time
  from . import constants
  
  def _service_url_from_hostport(secure, host, port):
      """
      Create an appropriate service URL given the parameters.
  
      `secure` should be a bool.
      """
      if secure:
          protocol = 'https://'
      else:
          protocol = 'http://'
      return ''.join([protocol, host, ':', str(port), '/_rpc/v1/reports/binary'])
  
  def _generate_guid():
      """
      Construct a guid - random 64 bit integer converted to a string.
      """
      return str(random.getrandbits(64))
  
  def _now_micros():
      """
      Get the current time in microseconds since the epoch.
      """
      return _time_to_micros(time.time())
  
  def _time_to_micros(t):
      """
      Convert a time.time()-style timestamp to microseconds.
      """
      return long(round(t * constants.SECONDS_TO_MICRO))
  
  def _merge_dicts(*dict_args):
      """Destructively merges dictionaries, returns None instead of an empty dictionary.
  
      Elements of dict_args can be None.
      Keys in latter dicts override those in earlier ones.
      """
      result = {}
      for dictionary in dict_args:
          if dictionary:
              result.update(dictionary)
      return result if result else None
  
new_contents: """ Utility functions
  """
  import random
  import time
  from . import constants
  
  guid_rng = random.Random()   # Uses urandom seed
  
  def _service_url_from_hostport(secure, host, port):
      """
      Create an appropriate service URL given the parameters.
  
      `secure` should be a bool.
      """
      if secure:
          protocol = 'https://'
      else:
          protocol = 'http://'
      return ''.join([protocol, host, ':', str(port), '/_rpc/v1/reports/binary'])
  
  def _generate_guid():
      """
      Construct a guid - random 64 bit integer converted to a string.
      """
      return str(guid_rng.getrandbits(64))
  
  def _now_micros():
      """
      Get the current time in microseconds since the epoch.
      """
      return _time_to_micros(time.time())
  
  def _time_to_micros(t):
      """
      Convert a time.time()-style timestamp to microseconds.
      """
      return long(round(t * constants.SECONDS_TO_MICRO))
  
  def _merge_dicts(*dict_args):
      """Destructively merges dictionaries, returns None instead of an empty dictionary.
  
      Elements of dict_args can be None.
      Keys in latter dicts override those in earlier ones.
      """
      result = {}
      for dictionary in dict_args:
          if dictionary:
              result.update(dictionary)
      return result if result else None
  
subject: Use a private RNG for guids. Avoids potential for trouble w/ the global instance.