def get_new_estimate(self):
"""Perform an update-cycle toward achieving time-synchronization.
Return:
Boolean true if valid timesync has been established.
"""
response = self._get_update()
rx_time = now_nsec()
# Record the timing information for this GRPC call to pass to the next update
round_trip = time_sync_pb2.TimeSyncRoundTrip()
# pylint: disable=no-member
round_trip.client_tx.CopyFrom(
response.header.request_header.request_timestamp)
round_trip.server_rx.CopyFrom(
response.header.request_received_timestamp)
round_trip.server_tx.CopyFrom(response.header.response_timestamp)
set_timestamp_from_nsec(round_trip.client_rx, rx_time)
with self._lock:
self._locked_previous_round_trip = round_trip
# Store the response to get clock-skew estimate, etc.
self._locked_previous_response = response
self._locked_clock_identifier = response.clock_identifier
return self.has_established_time_sync
def _create_header(self):
header = RequestHeader()
header.client_name = self.get_client_name()
set_timestamp_from_nsec(header.request_timestamp, now_nsec())
return header