def wait_for_server_channel_state(
self,
state: _ChannelzChannelState,
*,
timeout: Optional[_timedelta] = None,
rpc_deadline: Optional[_timedelta] = None) -> _ChannelzChannel:
# When polling for a state, prefer smaller wait times to avoid
# exhausting all allowed time on a single long RPC.
if rpc_deadline is None:
rpc_deadline = _timedelta(seconds=30)
# Fine-tuned to wait for the channel to the server.
retryer = retryers.exponential_retryer_with_timeout(
wait_min=_timedelta(seconds=10),
wait_max=_timedelta(seconds=25),
timeout=_timedelta(minutes=5) if timeout is None else timeout)
logger.info('Waiting for client %s to report a %s channel to %s',
self.ip, _ChannelzChannelState.Name(state),
self.server_target)
channel = retryer(self.find_server_channel_with_state,
state,
rpc_deadline=rpc_deadline)
logger.info('Client %s channel to %s transitioned to state %s:\n%s',
self.ip, self.server_target,
_ChannelzChannelState.Name(state), channel)
return channel
def wrap_retry_on_etag_conflict(*args, **kwargs):
retryer = retryers.exponential_retryer_with_timeout(
retry_on_exceptions=(EtagConflict, gcp.api.TransportError),
wait_min=_timedelta(seconds=1),
wait_max=_timedelta(seconds=10),
timeout=_timedelta(minutes=2))
return retryer(func, *args, **kwargs)
def wait_for_server_channel_state(
self,
state: _ChannelzChannelState,
*,
timeout: Optional[_timedelta] = None) -> _ChannelzChannel:
# Fine-tuned to wait for the channel to the server.
retryer = retryers.exponential_retryer_with_timeout(
wait_min=_timedelta(seconds=10),
wait_max=_timedelta(seconds=25),
timeout=_timedelta(minutes=3) if timeout is None else timeout)
logger.info('Waiting for client %s to report a %s channel to %s',
self.ip, _ChannelzChannelState.Name(state),
self.server_target)
channel = retryer(self.find_server_channel_with_state, state)
logger.info('Client %s channel to %s transitioned to state %s:\n%s',
self.ip, self.server_target,
_ChannelzChannelState.Name(state), channel)
return channel