def _check_for_hearbeat(self):
"""Preemptively raise GuestTimeout if heartbeat is old."""
try:
agent = agent_models.AgentHeartBeat.find_by(instance_id=self.id)
if agent_models.AgentHeartBeat.is_active(agent):
return True
except exception.ModelNotFoundError as mnfe:
LOG.warn(mnfe)
raise exception.GuestTimeout()
def _call(self, method_name, timeout_sec, **kwargs):
LOG.debug("Calling %s with timeout %s" % (method_name, timeout_sec))
try:
result = self.call(self.context,
self.make_msg(method_name, **kwargs),
timeout=timeout_sec)
LOG.debug("Result is %s" % result)
return result
except Exception as e:
LOG.error(e)
raise exception.GuestError(original_message=str(e))
except Timeout as t:
if t is not timeout:
raise
else:
raise exception.GuestTimeout()
def _call(self, method_name, timeout_sec, **kwargs):
LOG.debug("Calling %s" % method_name)
timeout = Timeout(timeout_sec)
try:
result = rpc.call(self.context, self._get_routing_key(), {
'method': method_name,
'args': kwargs
})
LOG.debug("Result is %s" % result)
return result
except Exception as e:
LOG.error(e)
raise exception.GuestError(original_message=str(e))
except Timeout as t:
if t is not timeout:
raise
else:
raise exception.GuestTimeout()
finally:
timeout.cancel()